Consulta: subjectFacets:"Application technology"
Registros recuperados: 53
Data/hora: 06/06/2024 01:03:45

BRILLIANT BLUE DYE REMOVAL IN FUNGICIDE SPRAYING
Provedor de dados: 70
Autores: Oliveira,Rone B.; Marubayashi,Rodrigo Y. P.; Gandolfo,Marco A.; Alves,Karina A.
ABSTRACT The method used for removal of brilliant blue dye may have an influence in interpreting the results of spraying deposition studies. The aim of this study was to assess the number of washings and water volumes for brilliant blue dye removal from soybean leaflets and glass slides in fungicide sprayings with and without adjuvants. A completely randomized experimental design was used in a 3 × 3 × 2 × 4 factorial scheme. The factors consisted of number of washings (1st, 2nd, and 3rd), water volume (15, 20, and 30 mL), target type (soybean leaflets and glass slides), and spray solutions (fungicide ProdutorBR® 0.5 L ha−1 without and with the adjuvants vegetable oil Agr’óleo® 0.5% v v−1, mineral oil Nimbus® 0.5% v v−1, and surfactant Silwet® 0.04% v v−1)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Adjuvants; Experimental methods.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300611

Spray deposition and chemical control of the coffee leaf-miner with different spray nozzles and auxiliary boom
Provedor de dados: 70
Autores: GITIRANA NETO,JEFFERSON; CUNHA,JOÃO P. A. R. DA.
ABSTRACT The coffee crop requires great spray ability to penetrate into the plant canopy during the application of pesticides. The aim of this study was to evaluate the spray deposition on leaves of coffee plants and the chemical control of the leaf miner provided by the application of different spray nozzles, with and without the use of an auxiliary boom. The deposition on the upper, middle and lower parts of the plants and the losses to the soil were evaluated using a tracer quantified by spectrophotometer. We also evaluated the chemical control of the leaf miner, counting the larvae, after the application of the insecticides cartap and fenpropathrin. The trial was carried out in a randomized block design, with four replications, in a factorial model...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea arabica L; Leucoptera coffeella; Spray; Application technology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000400656

PESTICIDES DEPOSITION IN VINEYARDS ON DIFFERENT CONDITIONS OF LEAF WETNESS
Provedor de dados: 70
Autores: Saab,Otavio J. G. Abi; Griesang,Fabiano; Alves,Karina A.; Higashibara,Leandro R.; Genta,Werner.
ABSTRACT The high susceptibility to diseases of fine table grapes cultivars demand intensive use of pesticides, and the presence of water on the leaf surface can worsen the deposition of these products. The objective of this study was to evaluate the spray deposition in vine leaves in different conditions of leaf wetness, and test the effectiveness of an artificial ventilation method to remove water on the leaf surface. We evaluated the spray deposition in vine applied over: wet canopy (presence of high leaf wetness); canopy dried artificially (dried with air jet from air-assisted sprayer, wind speed of 25 km h−1) and canopy dried naturally (naturally dried leaves and free of water on its surface). Saline marker was used in the spray and the deposition on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air assistance; Air-assisted sprayer; Application technology; Dew; Electrical conductivity; Vitis vinifera.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200286

EVALUATION OF DROPLET SPECTRA OF THE SPRAY TIP AD 11002 USING DIFFERENT TECHNIQUES
Provedor de dados: 70
Autores: Cunha,João P. A. R. da; Reis,Elton F. dos; Assunção,Heli H. T. de; Landim,Thiago N.
ABSTRACT Knowledge of droplet spectra generated by spray nozzle tips is important to ensure the quality of applications of plant protection products. However, there are different methods for this evaluation, which can cause difficulty in interpreting the results. This study aimed to evaluate the droplet spectra produced by the flat fan spray tip AD 11002 operated under different pressures and using different techniques and equipment. The volume median diameter (VMD), percentage of spray volume in droplets smaller than 100 µm diameter and relative spam (RS), considering pressures of 200, 300, and 400 kPa were determined using two direct measurement equipment (Spraytec and Shadow Sizer), based on laser diffraction and image analysis, respectively, and a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Droplet size; Water-sensitive paper; Laser diffraction.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400476

CONSTRUCTION AND PRACTICAL APPLICATION OF A CANOPY OPENER DEVICE
Provedor de dados: 70
Autores: PRADO,EVANDRO P.; Pogetto,MÁRio H. F. Do A. Dal; Cerqueira,Denise T.R. De; Raetano,Carlos G.; Costa,Saulo Í. De A.
ABSTRACT: Accurate application of pesticides is difficult for crops with dense leaves, such as soybean crops. To improve spray deposits on the lower leaves of soybean plants, the aim of this study is to build a canopy opener (CO) from a previously developed prototype and to assess its practical application and efficiency on soybean crops. Laboratory experiments were conducted to determine the amount of spray deposits on the top and the lower leaves using a Brilliant Blue dye. The influence of the CO device on the number of flowers knocked down during spraying was also investigated. The data showed that the use of the CO attached to the spray boom enabled more spray deposit on the lower leaves and less spray depositson the upper leaves compared with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Soybean; Spray deposit.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601126

USE OF REMOTELY PILOTED AIRCRAFTS FOR THE APPLICATION OF PLANT PROTECTION PRODUCTS
Provedor de dados: 70
Autores: Cunha,João P. A. R. da; Alvarenga,Cleyton B. de; Rinaldi,Paula C. N.; Marques,Matheus G.; Zampiroli,Renan.
ABSTRACT The use of remotely piloted aircrafts (RPAs) to apply plant protection products has grown a lot in agriculture worldwide. However, little research data are available regarding the efficiency and safety of this method, especially in Brazil. Thus, this review aimed to present the current scenario of scientific research involving RPAs in the application of pesticides. Several factors interfere with the quality of this type of application. Among them are height and flight speed, droplet generator elements, application rate, and spray solution properties. In general, applications have been performed between 1.0 m and 3.0 m of height and 1.0 m s-1 and 7.0 m s-1 of speed. As for the droplet generator element, there is still no clarity as to the ideal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Drones; Pesticides; Spraying.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162021000200245

DROPLET DISTRIBUTION AS A FUNCTION OF COTTON INTERROW SPACING AND ANGLES OF SPRAYER DISPLACEMENT
Provedor de dados: 70
Autores: de Lima Junior,Izidro dos S.; Degrande,Paulo E.; de Souza,Cristiano M. A.; Viegas Neto,Antonio L.
ABSTRACT Application technology factors may be influenced by changes in plant architecture, such as height and leaf area. This study aimed to evaluate which angle of sprayer displacement in the application of pesticides in relation to the direction of cotton sowing, cultivated in the ultra-narrow row, narrow row, and conventional systems, provides the best application quality characteristics in the different thirds of plants. The experiment was installed in a split-plot design with four replications in the 3 × 4 factorial scheme, composed of three cotton cultivation systems and four angles of sprayer displacement in relation to the direction of the sowing rows. The evaluated characteristics were mean volumetric diameter, density and coverage of droplets,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Droplet deposition; Third of plants.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000600927

ADJUVANTS IN FUNGICIDE SPRAYING IN WHEAT AND SOYBEAN CROPS
Provedor de dados: 70
Autores: Garcia,Luiz C.; Machado Júnior,Carlos R.; Bochnia,Giovana P.; Weirich Neto,Pedro H.; Raetano,Carlos G.
ABSTRACT The objective of this study was to determine whether the combination of adjuvants to fungicides significantly alters the spray physicochemical characteristics, and potentiates the chemical control of foliar diseases, in that it may affect yield components in wheat (Triticum aestivum) and soybean (Glycine max). The experimental design was completely randomized for the spray physicochemical characteristics, and randomized blocks for the culture variables analyzed, with four treatments and five replications. Treatments consisted of control (no fungicide spraying in the shoot), with fungicides only in plant shoots, fungicides + 0.25% of the spray with adjuvant of methyl ester base of soybean oil, and fungicides + 0.05% of the spray with adjuvant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disease; Glycine max; Application technology; Triticum aestivum.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601110

SPRAYING QUALITY OF CROP PROTECTION PRODUCTS USING TWO DROPLET SPECTRA IN THREE PERIODS OF THE DAY
Provedor de dados: 70
Autores: Graziano,Carlos E. P. L.; Alves,Karina A.; Gandolfo,Marco A.; Dario,Gustavo; Oliveira,Rone B.
ABSTRACT: Spraying of crop protection products can be affected by weather conditions and spray nozzles, altering deposition patterns and coverage of the target surface. The objective of this research was to analyze the quality of sprayings performed in three periods of the day (9:00 am, 2:00 pm, and 6:00 pm), using two different droplet sizes (fine and coarse) in soybeans. Coverage and deposition were evaluated in the upper, middle, and lower portion of soybean canopy. Spraying the products at 2:00 pm increased leaf coverage in the medium portion but also increased losses to the soil. Spray nozzles with fine droplet sizes provided greater coverage and deposition in the medium and upper portion of the crop for the sprayings performed in the morning. If...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coverage; Deposition; Endo-drift; Spraying time; Application technology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000601183

SPECTRUM, VELOCITY AND DRIFT OF DROPLETS SPRAYED BY NOZZLES WITH AND WITHOUT AIR INDUCTION AND MINERAL OIL
Provedor de dados: 70
Autores: França,Jorge A. L.; Cunha,João P. A. R. da; Antuniassi,Ulisses R.
ABSTRACT The aim of this study was to evaluate the spectrum, the velocity and the potential drift risk of droplets sprayed by nozzles with and without air induction, with the addition of mineral oil to the spray solution. The experiment was conducted in a completely randomized design with five replications; in a factorial model 2 × 2 (two spray nozzles and spray solution with and without mineral oil Assist®). Spray nozzles with and without air induction were evaluated, with nominal flow rate of 1.14 L min−1 and pressure of 300 kPa. The spectrum and the velocity of droplets were evaluated directly, using a droplet analyzer (VisiSize D30) in real time based on the analysis of high-resolution images. The drift potential was evaluated in an open circuit wind...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adjuvants; Droplet size; Application technology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300502

EFFECT OF NOZZLES, APPLICATION RATES, AND ADJUVANTS ON SPRAY DEPOSITION IN WHEAT CROPS
Provedor de dados: 70
Autores: Machado,Willian A.; Silva,Sérgio M.; Carvalho,Stephan M.; Cunha,João P. A. R. da.
ABSTRACT The use of insecticides is common in pest management in wheat crops but may lead to higher production costs and environmental contamination. Therefore, a more comprehensive and uniform distribution of plant protection products in the desired target is recommended. The objective of this study is to evaluate the effect of different spray nozzles, application rates, and adjuvants on droplet spectrum and spray deposition in wheat crops. The physicochemical characteristics of the spray mixture, droplet spectrum, and spray deposition in wheat plants were evaluated. The lower application rate (75 L ha−1) combined with the use of the twin flat fan tip AS7030 and the adjuvant sodium lauryl ether sulfate (SLES) yielded droplets with a larger diameter....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Application technology; Spray mixture volume; Droplet spectrum; Insecticide drift.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000100083

KNOWLEDGE ON ADJUVANT PROPERTIES, DISPOSAL OF PESTICIDERESIDUES AND SPRAY DRIFT OCCURRENCE IN THE STATE OF MATO GROSSO
Provedor de dados: 70
Autores: CARVALHO,FERNANDO K.; ANTUNIASSI,ULISSES R.; MOTA,ALISSON A. B.; CHECHETTO,RODOLFO G.; CARVALHO,LÍDIA R. DE.
ABSTRACT This paper aimed at investigating the knowledge level of people working on pesticide spraying activities concerning spray adjuvant properties, as well as collecting information on disposal locations for residues from internal spray tank cleaning, and finally the understanding of pesticide spray drift occurrence in the state of Mato Grosso, Brazil. The information was gathered through a questionnaire answered by participants of a rural extension program in application technology located in nineteen grain and fiber producing regions of Mato Grosso state. Among the mentioned adjuvants, 49.0% belonged to the mineral oil class and 17.9% of participants did not know the functions performed by such products. In addition, 58.5% of the participants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticides; Spraying; Environmental safety; Application technology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000200352

Effect of adjuvants on the amount of air included in droplets generated by spray nozzles
Provedor de dados: 70
Autores: Mota,Alisson A. B.; Antuniassi,Ulisses R.; Chechetto,Rodolfo G.; Oliveira,Rone B. de; Silva,Anne C. A. e.
The air included in droplets generated by spray nozzles directly int0erferes in transport, deposition and retention of the droplets after its impact on the target. The objective of this study was to analyze the interference of adjuvants in the amount of air included in droplets generated by spray nozzles. The treatments were composed by four spray solutions containing mineral oil, vegetable oil, surfactant and water, and three spray nozzles, two air induction type and one pre-orifice. The air included was calculated by the difference between the volume of spray mix (air plus liquid) and only the liquid, which was made by means of sprayed samples captured in a funnel and collected in a graduated cylinder. The surface tension was estimated by the gravimetric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Air induction; Pre-orifice; Surface tension.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600020

Distribution pattern, surface tension and contact angle of herbicides associated to adjuvants on spraying and control of Ipomoea hederifolia under rainfall incidence
Provedor de dados: 70
Autores: Calore,Ricardo A.; Ferreira,Marcelo da C.; Rodrigues,Nara E. L.; Otuka,Alessandra K.
ABSTRACT Scarlet Morning Glory is considered to be an infesting weed that affects several crops and causes serious damage. The application of chemical herbicides, which is the primary control method, requires a broad knowledge of the various characteristics of the solution and application technology for a more efficient phytosanitary treatment. Therefore this study aimed to characterize the effect of rainfall incidence on the control of Ipomoea hederifolia, considering droplet size, surface tension, contact angle of droplets formed by herbicides liquid on vegetal and artificial surfaces, associated to adjuvants and the volumetric distribution profile of the spray jet. The addition of the adjuvants to the herbicide spraying liquid improved the application...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Scarlet morning glory; Glyphosate; Paraquat.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000400756

DEPOSITION AND COVERAGE OF SOYBEAN LEAF SURFACES BY SPRAYS APPLIED USING DIFFERENT ASSISTED BOOM SPRAYER SYSTEMS
Provedor de dados: 70
Autores: Hoffmann,Laercio L.; Roehrig,Rafael; Boller,Walter; Forcelini,Carlos A.
ABSTRACT Maintaining homogeneity in the distribution of fungicidal sprays applied throughout the plant, minimizing the variation between the upper and lower third of the plant, is one of the main challenges for application technologies with regard to soybean crops. To increase the deposition and leaf coverage of sprayed compounds, especially in the middle and lower thirds of the plant, we developed and tested alternative assisted boom sprayer systems. In this study, three assisted boom sprayer systems (Vortex®, Dropleg®, and chain curtain) were evaluated, in addition to the conventional system, in terms of the deposition and coverage of the leaf surface they achieved in the upper, middle, and lower thirds of plants using the fluorescent tracer Helios SC...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Dropleg®; Vortex®.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000200198

INSECTICIDE SPRAYING IN SOYBEAN PLANTS: DIFFERENT NOZZLES MODELS AND AGROMETEOROLOGICAL CONDITIONS
Provedor de dados: 70
Autores: Costa,Lilian L.; Aquino,Nathan C. R. De Moura; Carneiro,Ângela L. C. G.; Almeida,Dieimisson P.; Ferreira,Marcelo Da C.
ABSTRACT The aim of the experiment was to evaluate the quality of the spraying by the spray volume deposit provided by different nozzles models in two agrometeorological conditions of application. Four parameters related to spray quality were evaluated: spray volume deposit, droplet size, surface tension and contact angle. The treatments consisted of three nozzle models (AXI Twin 12002, TTJ 110015 and JAI 120015) and two application times (between 02:00 p.m. and 04:00 p.m. and between 08:00 a.m. and 09:30 a.m.). The spray volume deposit in the upper portion of the soybean plants was similar, but the JAI 120015 nozzle model produces more uniform droplet spectra and is safer than the AXI Twin 12002 and TTJ 110015 due to the highest drift risk. It is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spray volume deposit; Application time; Phytosanitary product; Application technology.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000500673

BLADE ANGLE EFFECT ON DROPLET SIZE SPECTRUM OF ROTARY ATOMIZERS USED IN BRAZIL
Provedor de dados: 70
Autores: Carvalho,Fernando K.; Antuniassi,Ulisses R.; Chechetto,Rodolfo G.; Mota,Alisson A. B.; Kruger,Greg R.
ABSTRACT The effect of blade angle on droplet size spectrum of five rotary cage atomizers and one rotary disc atomizer used in Brazil was evaluated in a high speed wind tunnel, with an air speed of 180 km h−1. This study included the characterization of the droplet size spectrum, via laser diffraction instrument, generated by three blades angles, of 45, 60 and 75 degrees. The spray solution was composed of Picoxystrobin+ Cyproconazole fungicide (SC), at 20 mL c.p. L−1, and at a flow rate of 6 L min−1. As the angle decreased from 75 to 45 degrees, the rotational speed of the atomizers increased and the volume median diameter (VMD) decreased. However, increasing the rotational speed also increased the percentage of droplets smaller than 100 µm (% &lt; 100...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Atomization; Spray drift; Pesticides.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601118

WATER HARDNESS AND pH IN THE EFFECTIVENESS OF GLYPHOSATE FORMULATIONS
Provedor de dados: 70
Autores: Cunha,João P. A. R. da; Palma,Roxanna P.; Oliveira,Arthur C. de; Marques,Matheus G.; Alvarenga,Cleyton B. de.
ABSTRACT The hardness and pH of the spray water can interfere with the weed control effectiveness with herbicides, but it is not clear the magnitude of this interference, mainly associating different levels of pH and hardness to different glyphosate formulations. This study aimed to evaluate the influence of hardness and pH, in association, of the water used in the application of two glyphosate formulations on the weed control effectiveness. The experiment was conducted in duplicate, in areas with a predominance of Digitaria horizontalis, under a randomized block design with a 4×4×2+1 factorial scheme, composed of four water hardness levels (70, 110, 230, and 430 ppm CaCO3), four pH levels (3.5, 4.5, 5.5, and 6.5), two glyphosate formulations (ammonium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicide; Water quality; Spraying; Application technology.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000400555

Effect of working pressure at different spray nozzles on drift quantification in wind tunnel
Provedor de dados: 70
Autores: Gandolfo,Marco A.; Carvalho,Fernando K.; Chechetto,Rodolfo G.; Gandolfo,Ulisses D.; Moraes,Eder D. de.
Each year, there is an increase in pesticide consumption and in its importance of use in the large-scale agricultural production, being fundamental the knowledge of application technology to the activity success. The objective of the present study was to evaluate the influence of working pressure on the drift generated by different spray nozzles, assessed in wind tunnel. The treatments were composed of two spray nozzles AXI 110015 and AXI 11002 with pressure levels of 276 and 414 kPa. The spray solution was composed by water and NaCl at 10%. The applications were conducted at wind speed of 2.0 m s-1, being the drift collected at 5.0; 10.0 and 15.0 m away from the spray boom and at heights of 0.2; 0.4; 0.6; 0.8 e 1.0 m from the tunnel floor. To both spray...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Pesticides; Environmental contamination.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100008

PERFORMANCE OF AIR INDUCTION SPRAY NOZZLE MODELS UNDER DIFFERENT OPERATING CONDITIONS
Provedor de dados: 70
Autores: Cunha,João P. A. R. da; França,Jorge A. L.; Alvarenga,Cleyton B. de; Alves,Guilherme S.; Antuniassi,Ulisses R.
ABSTRACT For the successful application of phytosanitary products, it is essential to understand the spraying process well. The present work aims to evaluate the spectrum and speed of the droplets produced by different spray nozzle models with air induction, working under different operating conditions. The experiment was conducted using an entirely randomized design with five repetitions in a 3 × 3 × 3 factor scheme that incorporates three nozzle models (ADIA, AIXR, and GA), three nominal flows (0.76, 1.14, and 1.51 L min−1), and three operating pressures (200, 300, and 400 kPa). The spectrum and speed of the droplets were determined directly using a real-time droplet analyzer based on high-resolution image analysis. The spray nozzle model interfered with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spray tip; Droplet spectrum; Sprayer; Application technology.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000600711

SPRAY DRIFT AND CATERPILLAR AND STINK BUG CONTROL FROM AERIAL APPLICATIONS WITH ELECTROSTATIC CHARGE AND ATOMIZER ON SOYBEAN CROP
Provedor de dados: 70
Autores: Cunha,João P. A. R. Da; Barizon,Robson R. M.; Ferracini,Vera L.; Assalin,Marcia R.
ABSTRACT: The use of aerial application with electrostatic charge is an alternative to improve the quality of insecticide applications in soybean crop. The objective of this study was to evaluate the drift and chemical control of the caterpillar and stink bug complex promoted by aerial applications of insecticide in the soybean crop, using electrostatic spray system and rotary atomizers. The insecticide Thiamethoxam + Lambda cyhalothrin was applied with a Cessna 188 Ag Truck agricultural aircraft in two treatments: SPE® electrostatic system, with 54 SPE-5 nozzles and 10 L ha-1 application rate, and Travicar model® 05165 rotary atomizer, with 55° angle blades and application rate of 20 L ha-1. Drift was evaluated through quantification of active ingredient,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural aviation; Application technology; Exodrift; Glycine max.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000601163

ELECTROSTATIC SPRAYING EFFECT ON SPRAY DEPOSITION AND POWDERY MILDEW CONTROL IN SOYBEAN
Provedor de dados: 70
Autores: Assunção,Heli H. T. de; Silva,Sérgio M.; Alves,Guilherme S.; Zandonadi,Cesar H. S.; Cunha,João P. A. R. da.
ABSTRACT Electrostatic spray can bring benefits to the pesticide application such as the reduction of application rate and the increase of deposits on targets. Therefore, this study aimed to evaluate the effect of electrostatic spraying using lower application rates and different adjuvants on soybean spray deposition and chemical control of powdery mildew (Microsphaera diffusa Cooke &amp; Peck). The field experiment was conducted in duplicate. A randomized complete block design with four replications in a 2 × 2 × 2 + 1 factorial scheme was used. The factors were two application rates, with and without droplet electrification, two spray solution compositions, and one additional treatment. Deposition on upper and lower leaves, spray loss to the soil, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application rate; Droplet electrification; Application technology; Microsphaera diffusa.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000600721

INTERACTIONS BETWEEN ADJUVANTS AND THE FUNGICIDE AZOXYSTROBIN+BENZOVINDIFLUPYR IN HYDRAULIC SPRAYING
Provedor de dados: 70
Autores: Landim,Thiago N.; Cunha,João P. A. R. da; Alves,Guilherme S.; Marques,Matheus G.; Silva,Sérgio M.
ABSTRACT Adjuvants are tools to maximize pesticide spray quality. This study aimed to evaluate the interaction effects between adjuvants and the fungicide azoxystrobin + benzovindiflupyr on the physicochemical characteristics, droplet evaporation time, and spray droplet size. The experiment was carried out using a 2×6 factorial scheme, in which the first factor was the absence or presence of the fungicide mixture (water or water + fungicide) and the second factor was the presence of different adjuvants (water and five adjuvants). The parameters evaluated were surface tension, pH, viscosity, electrical conductivity, droplet evaporation time, volume median diameter, percentage of droplets smaller than 100 μm, and relative amplitude of the droplet spectrum....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spray solution additives; Droplet spectrum; Surfactants; Application technology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000500600

SPRAY DEPOSITION ON SOYBEAN CROP USING DIFFERENT TRAVEL SPEEDS AND APPLICATION RATES
Provedor de dados: 70
Autores: Cunha,João P. A. R. da; Victor,Arthur P.; Sales,Caroline G. R.
ABSTRACT Farmers are seeking pesticide treatments with lower application rates and higher travel speeds. However, this can lead to a poor quality of the application. The aim of this study was to evaluate the spray deposition on soybean crop and the droplet spectra using different application rates and speeds. The experiment was conducted in soybean (R5 stage), M 6410 IPRO variety. Six treatments involving two application rates (80 and 150 L ha-1) and three speeds (10, 15 and 20 km h-1) were evaluated through a self-propelled sprayer. A characterization study of the spray droplets was conducted through the evaluation of water sensitive papers. The spray deposition study was carried out. For this, a marker was added to the application to be detected by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Glycine max; Sprayer.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000100082

DROPLET SPECTRA AND SURFACE TENSION OF SPRAY SOLUTIONS BY BIOLOGICAL INSECTICIDE AND ADJUVANTS
Provedor de dados: 70
Autores: Costa,Lilian L.; Silva,Henrique J. P. Soares da; Almeida,Dieimisson P.; Ferreira,Marcelo da C.; Pontes,Nadson de C.
ABSTRACT Biological insecticides can be another pest control method used in integrated pest management; hence there is a demand for scientific information about these products to understand the appropriate application technique. The aim of this study was to evaluate the spray spectra data by different nozzle types using biological insecticide isolated and with adjuvants, as well the surface tension of these spray solutions. For droplet spectra data, a particle size analyzer was used and for surface tension of the spray solution, the method of pendant drop was used. Among the nozzles tested, ADI 11002 provided greater droplets median diameter volume, a lower percentage of droplets with diameters less than 100 μm and also the highest coefficient of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coefficient of uniformity; Volumetric median diameter; Application technology; Tensiometer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200292

SPRAY NOZZLES PERFORMANCE IN FUNGICIDES APPLICATIONS FOR ASIAN SOYBEAN RUST CONTROL
Provedor de dados: 70
Autores: Durão,Cléber França; Boller,Walter.
ABSTRACT: The performance of fungicides in controlling Asian soybean rust depends, in part, the spray quality of these products. The market of components to spray offers new types of nozzles which generate droplets with different characteristics. This study aimed to verify whether applications of fungicides with different spray nozzles interfere in soybean rust control. The experiment was conducted in the 2013/2014 harvest. The experimental design was a randomized block with three replications, and compared ten spray nozzles and a control without fungicide application. The applications were made with a backpack sprayer pressurized with CO2, set to apply a spray volume of 150 L ha-1. For the determination of severity four plants per plot were sampled,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Phakopsora pachyrhizi; Chemical control; Application technology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400709

Spraying systems and traveling speed in the deposit and spectrum of droplets in cotton plant
Provedor de dados: 70
Autores: Cavalieri,Jhonatan D.; Raetano,Carlos G.; Madureira,Ronaldo P.; Moreira,Lais L. Q.
ABSTRACT Tractor traveling speed can influence the quality of spraying depending on the application technology used. This study aimed to evaluate the droplet spectrum, the deposition and uniformity of spray distribution with different spraying systems and traveling speeds of a self-propelled sprayer in two phenological stages of the cotton plant (B9 and F13). The experimental design was randomized blocks and treatments were three spraying techniques: common flat spray tips; tilted flat jet with air induction, at 120 L ha-1; and rotary atomizer disk, 20 L ha-1, combined with four traveling speeds: 12, 15, 18 and 25 km h-1, with four replications. Spraying deposition was evaluated for both leaf surfaces from the cotton plant apex and base (stage B9) and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Rotary atomizer disk; Rotating nozzle; Gossypium hirsutum L.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000601042

Evaporation and wettability of fungicide spray, with or without adjuvant, on leaves of vegetables
Provedor de dados: 75
Autores: Precipito,Laís MB; Dario,Gustavo; Oliveira,João V; Oliveira,Rone B.
ABSTRACT On tomato, cucumber and bell pepper cultivation, commonly large quantities of plant-protection products are applied, to control pests and diseases, as a way to guarantee better productivity and final product quality. The knowledge of spreading and evaporation time of spray droplets is fundamental to understand the interaction between fungicides and target surface for proper distribution of this fungicide. This study was installed to determine the wetting area and droplet evaporation of sprays containing the fungicide Cabrio Top, with or without adjuvant Nimbus®, deposited on leaves and artificial surfaces (glass slide). A system was used which analyzes images composed of a droplet generator, a stereoscope camera for capturing images and a climatic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vegetables; Application technology; Greenhouse; Image analysis; Spray droplets.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300320

Uso de condicionadores para redução das perdas de nitrogênio durante compostagem de dejetos de suínos.
Provedor de dados: 14
Autores: CORREA, J. C.; GROHSKOPF, M. A.; NICOLOSO, R. da S.; HIGARASHI, M. M.; OLIVEIRA, P. A. V. de.
Na criação tecnificada de suínos, muita preocupação tem sido atribuída ao destino final dos resíduos gerados por este sistema, principalmente na geração de fertilizantes orgânicos e sua aplicação no ambiente. No ano de 2010, foram abatidos, aproximadamente, 36,8 milhões de cabeças e espera-se que até o ano de 2020 este número aumente, com incremento na produção de 24% (MAPA, 2010). Assim, a demanda para o aproveitamento dos resíduos gerados na criação de suínos será cada vez maior, fazendo com que a pesquisa necessite desenvolver recursos tecnológicos que equalizem a relação produção/qualidade ambiental.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Manejo de dejetos.; Manejo do solo; Fertilizante; Adubo; Tecnologia agrícola; Meio ambiente; Compostagem; Suinocultura.; Soil management; Fertilizer application; Application technology; Fertilizers; Environment; Waste treatment; Animal wastes; Swine; Composting.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1031918

Resumos...
Provedor de dados: 14
Autores: ENCONTRO DE PRODUÇÃO CIENTÍFICA DA EMBRAPA ALGODÃO, 17., 2022, Campina Grande, PB.
Formar pessoas capazes de buscar conhecimentos por meio da pesquisa e saber utilizá-los em benefício da sociedade é um dos grandes desafios que resume a importância do Programa Institucional de Bolsas de Iniciação Científica do Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq/Pibic) para estudantes de graduação nas universidades, em parceria com institutos de pesquisa. É dentro desta perspectiva que o Encontro de Produção Científica (EPC) se insere como uma etapa obrigatória do processo formal de avaliação dos bolsistas do Programa, enquanto orientandos dos pesquisadores da Embrapa Algodão. Anualmente, o EPC proporciona a estudantes iniciantes na pesquisa a participação em um evento de natureza científica, em que são apresentados...
Tipo: Folhetos
Palavras-chave: Produção científica; Iniciação Científica; Metodologia Científica; Matologia; Fitossanidade; Pesquisa Agrícola; Agricultura; Tecnologia; Química; Controle Químico; Agricultural research; Application technology; Agriculture.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1150302

Amazônia como polo mundial de produção agrícola sustentável.
Provedor de dados: 14
Autores: HOMMA, A. K. O.; MARCOLAN, A. L.; VALENTIM, J. F.
Com ciência e tecnologia, a Amazônia Legal vem se transformando, nos últimos anos, em um grande polo de produção mundial. Na região da Amazônia Legal, o avanço de cultivos de grãos como soja, arroz, algodão e milho, além de espécies como dendezeiros, cacaueiros, cafeeiros, cupuaçuzeiros, açaizeiros, castanheiras, laranjeiras, coqueiros, jambus e urucuzeiros e até reflorestamento têm ocorrido pela mudança de perfil da "pecuarização" para a "agriculturização". Tudo com o emprego de ciência e tecnologia, além de respeito ao meio ambiente.
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Agricultura sustentable; Tecnología de aplicación.; Agricultura Sustentável; Tecnologia Agrícola.; Sustainable agriculture; Application technology.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132210

Life on land: contributions of Embrapa.
Provedor de dados: 14
Autores: VILELA, G. F.; BENTES, M. P. de M.; OLIVEIRA, Y. M. M. de; MARQUES, D. K. S.; SILVA, J. C. B.
This publication presents contributions from the Brazilian Agricultural Research Corporation (Embrapa) to the Sustainable Development Goal (SDG) 15, whose theme is Life on Land: Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Desenvolvimento Sustentável; Ecossistema; Tecnologia Agrícola; Biossegurança; Controle Biológico; Sustainable development; United Nations; Ecosystems; Application technology; Biological control.
Ano: 2019
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1114549

INFLUENCE OF THE GLYPHOSATE FORMULATIONS ON WETTABILITY AND EVAPORATION TIME OF DROPLETS ON DIFFERENT TARGETS
Provedor de dados: 87
Autores: OLIVEIRA,R. B.; DARIO,G.; ALVES,K. A.; GANDOLFO,M. A.
ABSTRACTEfficiency of weed control can be increased if the herbicide formulation provides higher target coverage and evaporation time that enable an adequate distribution of herbicide on the target plant, allowing the absorption to continue even after the droplets evaporation. The aim of this research was to assess the influence of glyphosate formulations on the wetted area and evaporation time of droplets on different targets. Tests were conducted with droplets sizing from 500 μm containing three formulations of glyphosate (isopropylamine salt, ammonium salt and potassium salt) deposited on three surfaces, two leaves (Bidens pilosa and Cenchrus echinatus) and glass slides. Sequential images analyses were used to quantify the evaporation time and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Evaporation time; Wetted area; Herbicide; Application technology.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000300599

Floating Macrophyte Control with Glyphosate According to Adjuvants and Spray Nozzles
Provedor de dados: 87
Autores: SILVA,A.F.; CERVEIRA JR,W.R.; FERREIRA,M.C.; CRUZ,C.
ABSTRACT: The goals of this study were to evaluate the application of glyphosate plus three adjuvants and three spray nozzles in controlling the macrophyte Pistia stratiotes. For this purpose, after an 80 to 90% colonization, the application of 1.5, 3.5 and 7.0 L h-1 of isolated glyphosate and with the adjuvants Aterbane® BR, Veget’oil® and Dash® HC (0.5% vv-1) and the spray nozzles (AI 110.02, TTI 110.015 and TT 110.015) was performed, plus a control sample (water). Applications were performed with a pressurized backpack precision sprayer, at the constant pressure of 50 p.s.i. and with mixture consumption of 200 L ha-1. At the dose of 1.5 L ha-1, there was 100% control for the combination glyphosate + Veget’oil + tip AI 110.02 (Gly+V.oil+AI,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pistia stratiotes; Application technology; Effectiveness; Surface tension; Contact angle.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100227

Efficacy of Imazamox with Centrifugal Energy Spray Nozzle on Eichhornia crassipes and Economic Analysis of Control Viability
Provedor de dados: 87
Autores: GARLICH,N.; GUARNIERI,C.C.O.; FREITAS,R.L.G.; CERVONI,J.H.C.; CRUZ,C.; FERREIRA,M.C.
ABSTRACT: The efficacy of imazamox to control Eichhornia crassipes with a centrifugal energy spray nozzle at doses and volumes of spray solution and the costs of mechanical and chemical control of aquatic plants were evaluated in this study. Imazamox doses consisted of 200, 400, and 600 g a.i. ha-1, and spray solution volumes consisted of 25, 50, and 100 L ha-1, with a control (without herbicide application) and ten replications. Applications were performed with a centrifugal energy spray nozzle. The evaluations were carried out considering the percentage of control at 7, 15, 21, and 30 days after application (DAA), and plant dry matter was measured at 30 DAA, as well as leaf retention of spray solutions. An efficacy from 96 to 100% and plant dry matter...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Eichhornia crassipes; Common water hyacinth; Management.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100300

News Techniques for the Application of Herbicides on Soybean Crops
Provedor de dados: 87
Autores: PEREIRA,C.S.; LIMA,C.; MEDEIROS,A.L.; ARANTES,S.A.C.M.; ASSIS,R.P.; FIORINI,I.V.A.; CARVALHO,G.
ABSTRACT: There is a need for an increase nin efficiency and a reduction in the risk of environmental contamination in controlling weeds; this can be obtained with the development of the new techniques for the application of herbicides. The objective was to verify the efficiency of different herbicide application techniques on soybean crops (Glycine max (L.) Merrill). The experiment was conducted in a commercial area in the municipality of Sinop, Mato Grosso state. The design was a randomized block, with four replications and six treatments, namely: herbicide application with a manual backpack sprayer; application with an acrylic wool roll with 9 mm long hairs; sheep’s wool roller with 9 mm long hairs; high density polyester foam roller; weeding with a hoe...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spray; Rollers; Application technology.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100294

Protective Effect on Eucalyptus Plants and Signal Grass Control with a Tank Mixture of Glyphosate and Liquid fertilizer
Provedor de dados: 87
Autores: MACHADO,M.S.; FERREIRA,L.R.; PEREIRA,G.A.M.; GONÇALVES,V.A.; PAIXÃO,G.P.
ABSTRACT: What is expected from an effective antidote, applied with an herbicide, is that it protects crops from damages by the herbicide without reducing its action on weeds. In this context, the goal of this study was to evaluate the effect of liquid fertilizer as a protector of eucalyptus plants and to control signal grass (Urochloa brizantha) submitted the application of glyphosate when applied in tank mixture. Plants were submitted to doses of liquid fertilizer and glyphosate; the application was performed so that the syrup would reach all aerial parts of the plants. The intoxication percentage of eucalyptus plants was evaluated on day 14, 35 and 49 after application (DAA). On day 49 DAA, the morphologic parameters of eucalyptus plants and the dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Antidotes; Eucalyptus urophylla; Urochloa brizantha; Weed.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100273

APPLICATION HEIGHT IN HERBICIDES EFFICIENCY IN BEAN CROPS
Provedor de dados: 87
Autores: PEREIRA,G. A. M.; BARCELLOS JR,L. H.; SILVA,D. V.; BRAGA,R. R.; TEIXEIRA,M. M.; SILVA,A. A.; RIBEIRO JR,J.I.
ABSTRACTInadequate herbicide application can result in failures in weed control and/or poisoning of the crops, resulting in yield losses. In this research were assessed the effects of the sprayer nozzle boom height in the distribution of the spray solution for weed control, influencing intoxication of beans and crop yield. Experiments were conducted in laboratory and field conditions. In laboratory, the performance of flat spray tip TT 11002 was assessed at heights 0.20, 0.30, 0.40 and 0.50 meters with respect to the target surface. In the field the same heights were assessed in applications of herbicides fomesafen, fluazifop-P-butyl and fomesafen + fluazifop-P-butyl. There was an inverse relationship between the height of the spray boom and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Application technology; Mixture of herbicides.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000300607

Spray nozzles, working pressures and use of adjuvant in reduction of 2,4-D herbicide spray drift
Provedor de dados: 87
Autores: Godinho Jr.,João D.; C. Vieira,Lucas; A.A. Ruas,Renato; Carvalho Filho,Alberto; R. Faria,Vinícius; I.V.G. God,Pedro.
Abstract  Background:  The study of the interactions between equipment, application methods, and spray mixtures is fundamental to optimize the application of pesticides. The determination of the best combination of these factors can reduce the drift during the application of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D).  Objective:  The objective this paper is to study the influence of nozzle models, working pressures, and surfactant adjuvant in reducing the drift of 2,4-D.  Methods:  The spectrum of nozzle drops was determined for a conventional flat jet; flat jet with air induction; double plane jet with air induction; deflector flat jet with air induction; and an empty cone with air induction at pressures of 200, 300, 400, and 500 kPa. This was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agricultural mechanization; Application technology; Quality control; Air induction; Droplet size; Wind tunnel.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100320

Computer programs for analysis of droplets sprayed on water sensitive papers
Provedor de dados: 87
Autores: Cunha,J.P.A.R.; Farnese,A.C.; Olivet,J.J.
The use of water-sensitive papers is an important tool for assessing the quality of pesticide application on crops, but manual analysis is laborious and time-consuming. Thus, this study aimed to evaluate and compare the results obtained from four software programs for spray droplet analysis in different scanned images of water-sensitive papers. After spraying, papers with four droplet deposition patterns (varying droplet spectra and densities) were analyzed manually and by means of the following computer programs: CIR, e-Sprinkle, DepositScan and Conta-Gotas. The diameter of the volume and number medians and the number of droplets per target area were studied. There is a strong correlation between the values measured using the different programs and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spray quality; Pesticides; Sprayer; Droplet size; Application technology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300023

Influence of spray mixture volume and flight height on herbicide deposition in aerial applications on pastures
Provedor de dados: 87
Autores: Oliveira,M.A.P.; Antuniassi,U.R.; Velini,E.D.; Oliveira,R.B.; Salvador,J.F.; Silva,A.C.A.; Mota,A.A.B.; Figueiredo,Z.N.; Boiani,R.S.
The objective of the present study was to analyze the influence of spray mixture volume and flight height on herbicide deposition in aerial applications on pastures. The experimental plots were arranged in a pasture area in the district of Porto Esperidião (Mato Grosso, Brazil). In all of the treatments, the applications contained the herbicides aminopyralid and fluroxypyr (Dominum) at the dose of 2.5 L c.p. ha-1, including the adjuvant mineral oil (Joint Oil) at the dose of 1.0 L and a tracer to determine the deposition by high-performance liquid chromatography (HPLC) (rhodamine at a concentration of 0.6%). The experiment consisted of nine treatments that comprised the combinations of three spray volumes (20, 30 and 50 L ha-1) and three flight heights...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Agricultural aviation; Pulverization.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000100025

Vertical and horizontal oscillation of three models of self-propelled boom sprayers
Provedor de dados: 91
Autores: Reynaldo,Étore F.; Machado,Thiago M.; Taubinger,Leandro; Quadros,Dionathan de.
ABSTRACT The spray boom is one of the sprayer components that most affect the application quality and may cause phytotoxicity and overlay application problems. Therefore, this study aimed to evaluate the displacement in the vertical and horizontal movements of the spray booms in three models of self-propelled boom sprayers. The vibrations of the spray boom in the vertical direction was measured using three receivers (GNSS) with RTK differential correction. The vibration measurements in the horizontal direction were determined using a high resolution camera. At the end, the processed data were entered into a spreadsheet for the descriptive statistics. The smallest spray boom movement in the horizontal direction was obtained by the specimen 2. No statistical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sprayer; Application technology; Vibration.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001000941

Spray deposition and losses in potato as a function of air-assistance and sprayer boom angle
Provedor de dados: 63
Autores: Scudeler,Fábio; Raetano,Carlos Gilberto.
Within the Brazilian agricultural scene, the potato crop plays a significant economic role. Modern equipment and the development of improved chemical product application techniques contribute toward the constant search for improved revenue from the potato as a crop. Field experiments were carried out in a random block design of a potato crop of the "Ágata" variety. The aim was to evaluate the effect of air assistance combined to different angles of spray application on the chemical deposition on the potato plant, as well as to assess spray losses to the soil. For this a sprayer with and without boom air assistance was used in the experiments. Boom angles of 0º, +30º and -30º were directed to a vertical position as well as forward and backward movements....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Application technology; Sleeve boom sprayer; Spray.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000600001

Optimization of spray deposition and Tetranychus urticae control with air assisted and electrostatic sprayer
Provedor de dados: 63
Autores: Cerqueira,Denise Tourino Rezende de; Raetano,Carlos Gilberto; Pogetto,Mario Henrique Ferreira do Amaral Dal; Carvalho,Marina Mouzinho; Prado,Evandro Pereira; Costa,Saulo Ítalo de Almeida; Moreira,Caio Alexandre Ferreira.
ABSTRACT: Improved spray deposition can be attained by electrostatically charging spray droplets, which increases the attraction of droplets to plants and decreases operator exposure to pesticide and losses to the environment. However, this technique alone is not sufficient to achieve desirable penetration of the spray solution into the crop canopy; thus, air assistance can be added to the electrostatic spraying to further improve spray deposition. This study was conducted to compare different spraying technologies on spray deposition and two-spotted spider mite control in cut chrysanthemum. Treatments included in the study were: conventional TJ 8003 double flat fan nozzles, conventional TXVK-3 hollow cone nozzles, semi-stationary motorized jet launched...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Electrostatic spraying; Air assisted spraying; Flower sector; Two-spotted spider mite.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000100032

A system to evaluate the performance of hydraulic nozzles used in stored grain preotection trials
Provedor de dados: 63
Autores: Vásquez-Castro,Javier A.; Baptista,Gilberto C. de; Gadanha Jr.,Casimiro D.; Trevizan,Luiz R.P.
We developed a system to evaluate the performance of hydraulic nozzles used in stored corn and wheat grain protection experiments. An insecticidal mix was used as test fluid to determine the transversal volumetric distribution and droplets spectrum of a model TJ-60 8002EVS hydraulic nozzle. A mobile application system was built to apply a rate equivalent to 5 L t-1 and obtain theoretical concentrations of 10 and 0.5 mg kg-1 of fenitrothion and esfenvalerate, respectively. The corn and wheat grains were spread out as a fine layer. Three glass slides (0.1 × 0.05 m) were placed on the top surface of the grains to ensure that the intended application rate was achieved. After treatment, the deposits on both matrices were analyzed by gas chromatography. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Gas chromatography; Insecticide deposits; Corn; Wheat.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600001

Effect of mini-sprinkler irrigation system on Heterorhabditis baujardi LPP7 (Nematoda: Heterorhabditidae) infective juvenile
Provedor de dados: 63
Autores: Lara,Juan Carlos; Dolinski,Cláudia; Sousa,Elias Fernandes de; Daher,Rogério Figueiredo.
Entomopathogenic nematodes (EPNs) are currently being used as successful biological control agents of soil-dwelling insect pests. Previous field and greenhouse studies demonstrated that application techniques and non-biotic factors (temperature and pressure) have a significant effect on EPNs efficacy. The objective of this study was to evaluate the influence of an irrigation spray application system on the viability, infectivity and host search capability of Heterorhabditis baujardi LPP7 (Nematoda: Heterorhabditidae) infective juveniles (IJ). Two assays were proposed. Their viability was evaluated under the microscope after the IJ passed through the irrigation system. Infectivity on Galleria mellonella larvae, and host search capability, as evidenced by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biological pest control; Application technology; Viability; Infectivity; Search capability.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000400017

Droplet spectrum and fungicide efficiency in the control of Asian soybean rust (Phakopsora pachyrhizi Syd. &amp;amp; P. Syd.)
Provedor de dados: 109
Autores: Garcés-Fiallos,Felipe Rafael; Durante Danelli,Anderson Luiz; Baldiga Tonin,Rosane; Boller,Walter.
Abstract The aim of this study was to evaluate the chemical control of Asian soybean rust (Phakopsora pachyrhizi Syd. &amp; P. Syd.) using different tips and spray nozzles under controlled conditions. Rooted trifolia placed inside an acrylic box containing macronutrients, micronutrients and vitamins were treated with epoxiconazol + pyraclostrobin, ciproconazol + azoxystrobin and tebuconazol fungicides. These fungicides were sprayed at a height of 0.5 m with two knapsack sprayers pressurized with CO2 gas (drop generator in four spray tips spaced by 0.5 m from each other) and another rotating nozzle (drop generator through a rotating nozzle). Untreated trifolia were controls. Water sensitive paper was placed next to each acrylic box to obtain median volume...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Chemical control; Controlled conditions; Inoculation; Phakopsora pachyrhizi; Glycine max.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000200362

Mapping of the time available for application of pesticides in the state of Paraná, Brazil
Provedor de dados: 1
Autores: Silva, Alessandra Fagioli da; Oliveira, Rone Batista de; Gandolfo, Marco Antonio.
Spraying practices are highly sensitive to variations in climatic conditions, so it the spatial variability of the number of monthly hours available for the application of pesticides in the state of Paraná, Brazil, was determined and analyzed. An hourly time series of the climatic data obtained from 54 meteorological stations from the Paraná, for the years 2004-2014 was analyzed. To determine the number of monthly hours available to perform the applications, the following conditions were established: temperature &amp;lt; 30°C, relative air humidity &amp;gt; 55%, wind speed between 3 and 12 km h-1, and rainfall less than 0.2 mm h-1. After being cross-referenced, these data were analyzed using descriptive statistics and geostatistics. A high variability of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Spraying; Climatic conditions; Geostatistics.; Tecnologia de aplicação; Condições climáticas.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39421

Effect of spray volume on the moisture of stored corn and wheat grains
Provedor de dados: 52
Autores: Vásquez-Castro,Javier Alberto; Baptista,Gilberto Casadei de; Gadanha Junior,Casimiro Dias; Trevizan,Luiz Roberto Pimentel.
The goal of this work was to evaluate the effect of spray volume on the moisture of the stored grains of the corn and wheat. Two kg of each type of the grain were placed into the plastic bags and sprayed with the theoretical doses of 0, 1, 3, 5, 8, and 10 liters of water / ton of the grain. The grain moisture content was evaluated 24 h after the spray operation by the oven method. The increase in the grain moisture was quadratic and showed the same trend in both the corn and wheat. The grain moisture after spraying 10 L.t-1 showed little increase (0.8 %) as compared to the initial moisture content. Thus, the application of any spray volume as used in this study made no difference for a possible better uniformity in the distribution of insecticide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stored products; Chemical control; Application technology; Desorption; Hygroscopic equilibrium.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300003

Spray deposition on weeds of common bean crops
Provedor de dados: 118
Autores: Rodrigues-Costa,Andreia C. P; Martins,Dagoberto; Costa,Neumárcio V; Pereira,Maria R. R.
Weed control failure in common bean (Phaseolus vulgaris L.) production may be related to inappropriate herbicide application techniques. The purpose of this study, therefore, was to evaluate the amount of spray solution deposition that occurred on the weeds, Bidens pilosa L. and Brachiaria plantaginea (Link) Hitch., both within and between rows of common beans. The research was arranged in a randomized block design with four replications. The following 6 spray nozzles were used: flat fan nozzles XR 110015 VS (150 L ha-1) and XR 11002 VS (200 L ha-1); cone nozzles TX VK 6 (150 L ha-1) and TX VK 8 (200 L ha-1); and twin flat fan nozzles TJ60 11002 VS (150 L ha-1) and TJ60 11002 VS (200 L ha-1). The results showed that the loss of the spray solution on the...
Tipo: Journal article
Palavras-chave: Application technology; Bidens pilosa; Brachiaria plantaginea; Nozzle; Phaseolus vulgaris.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000300005

Deposit of pesticides without and with adjuvants on citrus seedlings following different intervals of artificial rain
Provedor de dados: 65
Autores: Decaro,Ricardo Augusto; Decaro Junior,Sergio Tadeu; Ferreira,Marcelo da Costa.
ABSTRACT: For a crop protection product to achieve its goal, the product must be applied and remain on the leaves until it is absorbed. This situation may be compromised due to rainfall after spraying, thus necessitating reapplication which increase the overall cost. Application technology research has focused on alternatives and solutions to mitigate this effect through the use of adjuvants. The objective of this research was to evaluate the deposit of spraying liquid on citrus seedlings using the products spirodiclofen, propargite, imidacloprid, lambda cyhalothrin, copper oxychloride, and copper hydroxide with water mixed with the adjuvants polydimethylsiloxane and phosphatidylcholine. Seedlings were subjected to simulated rains of 10mm at intervals of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fungicides; Insecticides; Miticides; Pulverization; Application technology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100013

Pesticide drift from aircraft applications with conical nozzles and electrostatic system
Provedor de dados: 65
Autores: Martini,Alfran Tellechea; Avila,Luis Antonio de; Camargo,Edinalvo Rabaioli; Helgueira,Diogo Balbé; Bastiani,Marlon Ouriques; Loeck,Alci Enimar.
ABSTRACT: Despite all advances obtained with the pesticide use worldwide and in Brazilian agriculture, there is still a lack of technologies for agricultural aircrafts. The objective of this study was to evaluate the drift produced by the use of conical nozzles and electrostatic system in aircraft application. The experimental design was completely randomized with a factorial arrangement and four replications. Treatments included two spraying equipment: electrostatic system with 5L ha-1 of spray volume and conical nozzle with 15 and 20L ha-1. In all treatments, azoxystrobin fungicide was used at a dose of 100g a.i. ha-1 and paraffinic mineral oil at a dose of 0.5% v.v. Volume median diameter (VMD) and droplet density were estimated using water sensitive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Agricultural aircraft; Electrostatic spraying; Droplet spectrum; Collectors.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901678

Drift curves from spray applications on commom bean crop
Provedor de dados: 64
Autores: Bueno,Mariana Rodrigues; Cunha,João Paulo Arantes Rodrigues da; Santana,Denise Garcia de.
ABSTRACT In order to avoid the occurrence of drift in pesticide applications, it is fundamental to know the behavior of sprayed droplets. This study aimed to determine drift curves in pesticide applications on common bean crop under brazilian weather conditions, using different nozzle types and compared them with the "German" and "Dutch" drift prediction models. The experiment was conducted in Uberlândia, Minas Gerais/Brazil, in completely randomized design with ten replications and 4 x 20 split-plot arrangement in space. Drift deposited on collectors located over ground level was resulted by 150 L ha-1 carrier volume applications through four nozzle types (XR 11002 (fine droplets); AIXR 11002 (coarse droplets); TT 11002 (medium droplets); TTI 11002...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Droplet size; Spray nozzle; Exponential regression; Application technology.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000600621