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| Registros recuperados: 15 | |
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| Menechini,Wagner; Maggi,Marcio F.; Jadoski,Sidnei O.; Leite,Carla D.; Camicia,Ricardo da M.. |
| ABSTRACT The aim was to evaluate the diseases severity on corn second crop. The research was conducted on the agricultural year of 2013 and 2014, evaluating the application quality over the fungicide spraying. The hybrid used was PIONEER 30k75 BT HERCULEX, evaluating the diseases severity previously and after the fungicide spraying, spray deposition on the culture and productivity. The aerial application was carried out with solution volume of 7.5, 13.5, 20 and 30.3 L ha-1, using automatic rotating nozzles, and the ground application with 90, 110, 130 and 150 L ha-1, uniform flat spray tips. As control a non-fungicide treatment was used. The aerial and soil treatment showed diseases control from the corn crop, being the biggest cover of drops acquired at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Farming plane; Corn productivity; Spraying. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000100116 |
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| Raetano,Carlos Gilberto; Kobayashi,Marco Roberto; Kuwahara,Wagner Roberto; Vinchi,Rodrigo R.. |
| Thrips is one of the most important vector species of the tomato spotted wilt tospovirus (TSWV) in Brazil. Two different pesticide application methods, drench x spray, using thiamethoxam were compared with commonly used insecticides for thrips control in tomato plants, Debora Plus. The experimental design consisted of a complete randomized block design with seven treatments and four replicates. Dosages of 150 and 200 g of a.i. per ha were used in just one drench application and 50 g of a.i. ha-1 sprayed, at weekly intervals, 48 days after sowing. The control efficacy of thiamethoxam was compared to diafenthiuron (400 g of a.i. ha-1), profenofos + cypermethrin (320+32 g of a.i. ha-1, respectively) and methamidophos (60 g of a.i. per hectolitre of water) in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Frankliniella schultzei; Drench application; Spraying; Chemical control. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362003000300002 |
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| CHAIM, A.; VALARINI, P. J.; OLIVEIRA, D. de A.; MORSOLETO, R. V.; PIO, L. C.. |
| O objetivo deste trabalho foi avaliar a quantidade de agrotóxico perdida durante a pulverização da cultura de feijão e de tomate. Na de feijão, os testes foram realizados quando as plantas se apresentavam com 15, 35 e 60 cm de altura, enquanto, para o tomate, com 40 e 70 cm de altura. Em todos os testes, a deposição no topo das plantas foi maior do que a da região mediana e basal. As perdas para a cultura do feijão ficaram entre 49 e 88% do total do traçador aplicado e, as do tomate, entre 44 e 70%. |
| Tipo: Folhetos |
Palavras-chave: Perdas; Deposição; Pulverização; Agrotóxico; Feijão; Tomate; Método de Aplicação; Spraying; Pesticides. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/13120 |
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| Maia,Bruno; Cunha,Joao P.A.R.. |
| Distance learning presents great potential for mitigating field problems on pesticide application technology. Thus, due to the lack of teaching material about pesticide spraying technology in the Portuguese language and the increasing availability of distance learning, this study developed and evaluated a computer program for distance learning about the theory of pesticide spraying technology using the tools of information technology. The modules comprising the course, named Pulverizar, were: (1) Basic concepts, (2) Factors that affect application, (3) Equipments, (4) Spraying nozzles, (5) Sprayer calibration, (6) Aerial application, (7) Chemigation, (8) Physical-chemical properties, (9) Formulations, (10) Adjuvants, (11) Water quality, and (12) Adequate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: E-learning; Pesticide application; Spraying; Teaching/learning strategies. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000400028 |
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| Sasaki,Robson S.; Teixeira,Mauri M.; Fernandes,Haroldo C.; Zolnier,Sérgio; Maciel,Christiam F. S.; Alvarenga,Cleyton B. de. |
| ABSTRACT During pesticide spraying, the psychrometric conditions of the air may cause evaporation of the droplets along their trajectory from the nozzle to the target. Thus, this study aimed to evaluate the effect of air psychrometric conditions and operating pressure on the droplet spectrum of air-assisted boom sprayers. The test was performed using a prototype equipped with an axial fan, a flow homogenizer, temperature and relative air humidity sensors, a spray nozzle and a gas-heating system to warm up the airflow. With the assembled system and the aid of a particle analyser, the JSF 11002 spray nozzle was evaluated with respect to droplet spectrum in four air psychrometric conditions (7, 14, 21 and 28 hPa) and at four operating pressures (200, 300, 400... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evaporation; Spraying; Pesticides. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100092 |
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| 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 |
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| 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 < 30°C, relative air humidity > 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: 5.01.02.05-2 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 |
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| 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 < 30°C, relative air humidity > 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 |
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| MORAES,H.M.F.; COSTA,J.O.; PEREIRA,G.A.M.; SOUZA,W.M.; SILVA,A.A.; PAIXÃO,G.P.. |
| ABSTRACT: Available information on physical compatibility and stability of pesticide mixtures is scarce and often divergent. This knowledge is of fundamental importance in the success of pest, disease, and weed control programs. Compatibility and stability of two glyphosate formulations (WG and SL) in a mixture with fluazinam + deltamethrin + trifloxystrobin/cyproconazole at four diluted water concentrations and different times were evaluated under laboratory conditions. The evaluations were performed at the following time intervals: immediately after mixing and 1, 5, 10, 30, 120, 900, and 1,440 minutes after the mixing of pesticides. Scores were assigned on a scale ranging from 1 to 5, where 1 meant immediate separation of compounds and 5 the perfect... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pesticides; Formulation; Spraying. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100179 |
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| 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 |
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| Hetz,Edmundo; Saavedra,Mauricio; Venegas,Alejandro; López,Marco. |
| The objectives of this work were to establish non-polluting pesticide application windows (VAP), that is the existence and size of appropriate daily periods to apply pesticides, for blueberry (Vaccinium sp.) orchards located in the Los Angeles area (37º28 S. lat., 72º23 W long.), Bio-Bio province, Chile; to compare them with the time demands of the annual spraying schedule, the effective work capacity (CET) of the air blast sprayers available in the market, and the area of the orchards. To achieve these objectives a 21-year daily meteorological database that included daily rainfall, wind speed, temperature and relative humidity was probabilistically processed. The results showed that there are enough appropriate days to carry out these applications, even... |
| Tipo: Journal article |
Palavras-chave: Spraying; Appropriate days; Pollution; Probabilities; Pulverización; Días apropiados; Contaminación; Probabilidades. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072004000400006 |
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| 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 |
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| Registros recuperados: 15 | |
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