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Air-assisted velocity profiles and perceptive canopy interactions of commercial airblast sprayers used in Pacific Northwest perennial specialty crop production 111
Khot, Lav R.
This study aimed at providing a data-driven understanding of air velocity profiles for four commercial airblast sprayers widely used in the Pacific Northwest (PNW) region of the United States. The Rear’s Powerblast (S1) and Pakblast (S2), Turbomist 30P (S3), and Columbia Accutec (S4) were evaluated using the Smart Spray Analytical System (Bahlol et al., 2020). Air velocity contour profiles and geometrical attributes (symmetry and uniformity) were characterized on two sides as well as at three horizontal distances from the outlet (0.6, 1.5, and 2.1 m) of each sprayer. The air velocity profiles were matched to vertical canopy zones of three typical perennial specialty crops (cherry, apple, and grapevine) to identify their suitability. Air velocity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Perennial specialty crops; Airblast sprayers; Smart spray analytical system; Air velocity patterns; Symmetry; Uniformity; Sprayer adjustments..
Ano: 2022 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7039
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Analysis of nozzle spray distribution for different nozzle height and pressure 111
Khoshnam, Farhad.
A patternator was designed and constructed with the aim of field sprayers pattern testing and consequently application of more accurate weed control, reduce environmental and economic costs associated with weed control. The patternator was tested at six spray height (50, 60, 70, 80, 90 and 100 cm) for each of the three levels of system pressure (1.0, 2.0 and 3.0 bar). All measurements were performed spraying water with a temperature of 20 oC in the laboratory. Environmental conditions are kept constant at a temperature of 48 oC, relative humidity of 51% and wind speed 3 m/s. The Spray Width (cm), Standard Deviation and Coefficient of Variation (CV) of spray distribution patterns obtained from Patternator experiments at various nozzle heights and pressures....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sprayer; Pattern; Horizontal Patternator; Weed Control; Uniformity; Costs.
Ano: 2022 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6345
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Avaliação das características tecnológicas da fibra do algodão produzido na região Nordeste. 14
GOMES, I. F.; BELTRAO, N. E. de M.; CRISOSTOMO. J. R.; CAVALCANTI, F. B.; SILVA, F. de A.; SOUZA, R. P. de.
bitstream/item/33278/1/AVALIACAO-DAS-CARACTERISTICAS.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Uniformidade; Finura; Percentagem; Brasil; Nordeste; Paraiba; Rio Grande do Norte; Ceara; Piaui; Pernambuco; Fiber; Lengt; Uniformity; Resistance; Tiness; Percent.; Algodão; Comprimento; Fibra; Gossypium Hirsutum; Qualidade; Resistência; Tecnologia.; Cotton; Technology..
Ano: 1986 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262736
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Effects of Dietary L-Glutamine or L-Glutamine Plus L-Glutamic Acid Supplementation Programs on the Performance and Breast Meat Yield Uniformity of 42-d-Old Broilers 89
Ribeiro Jr,V; Albino,LFT; Rostagno,HS; Hannas,MI; Ribeiro,CLN; Vieira,RA; Araújo,WAG de; Pessoa,GBS; Messias,RKG; Silva,DL da.
ABSTRACT This study aimed at evaluating four dietary L-Glutamine (L-Gln) or L-Gln plus L-Glutamate (L-Glu) supplementation programs on the performance, breast yield, and uniformity of broilers. A total of 2,112 one-d-old male Cobb 500(r) broilers were distributed according to a randomized block design in a 2 × 4 factorial arrangement (L-Gln or L-Gln plus L-Glu × 4 supplementation programs), totaling eight treatments with 12 replicates of 22 broilers each. The supplementation programs consisted of the dietary inclusion or not of 0.4% of L-Gln or L-Gln plus L-Glu for four different periods: 0 days (negative control), 9d, 21d, and 42d. Feed intake (FI, g), body weight gain (BWG, g), feed conversion ratio (FCR, kg/kg), coefficient of variation of body weight...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breast; Growth; Non-essential amino acids; Uniformity.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000093
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GENETIC INFORMATION IN AGRICULTURAL PRODUCTIVITY AND PRODUCT DEVELOPMENT 31
Hennessy, David A.; Miranowski, John A.; Babcock, Bruce A..
A prominent facet of recent changes in agriculture has been the advent of precision breeding techniques. Another has been an increase in the level of information inputs and outputs associated with agricultural production. This paper identifies ways in which these features may complement in expanding the variety of processed products, the level of productivity, and the rate of change in productivity. Using a martingale concept of "more information," we identify conditions under which more information increases the incentives to invest and engage in product differentiation. A theory on how genetic uniformity can enhance the rate of learning through process experimentation, and so the rate of technical change, is also developed.
Tipo: Working or Discussion Paper Palavras-chave: Experimentation; Genetics; Information; Martingale; Sorting; Uniformity; Value added; Productivity Analysis.
Ano: 2003 URL: http://purl.umn.edu/18598
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Optimal experimental plot size for papaya cultivation 86
Silva,Mauricio dos Santos da; Silva,Sebastião de Oliveira e; Donato,Sérgio Luiz Rodrigues; Ledo,Carlos Alberto da Silva; Sampaio Filho,Orlando Melo; Silva,Gilmara de Melo Araújo; Conceição,Antônio Leandro da Silva.
Abstract: The objective of this work was to determine the optimal size of experimental plots for the evaluation of agronomic characteristics and fruit quality of papaya, by the linear model of plateau response, under soil and climatic conditions of the Recôncavo Baiano region, in the state of Bahia, Brazil. The experiment consisted of a uniformity test, with the papaya lineage L78, at 3×2 m spacing, in 16 rows with 22 plants, totaling 352 plants and 2,112 m2 useful area. Each plant was considered as a basic unit, and 11 forms of pre-established plots, with rectangular and row formats, were obtained. The agronomic characteristics and fruit quality were evaluated in the plots. Optimal plot size varied greatly among the variables related to agronomic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carica papaya; Experimental accuracy; Uniformity.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102001
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Optimum experimental plot size in the castor bean 124
Sampaio Filho,Orlando Melo; Silva,Sebastião de Oliveira e; Donato,Sérgio Luiz Rodrigues; Silva,Simone Alves; Silva,Mauricio dos Santos da.
ABSTRACT Optimum plot size is of fundamental importance for the results, precision and cost-effectiveness of experiments. The aim of this study therefore, was to estimate optimum plot size in a strain of the castor bean by means of the Linear Response Plateau Model (LRPM). The experiment consisted of a test for uniformity, carried out in Cruz das Almas, in the State of Bahia, Brazil. The UFRB-222 strain was used, which was planted at a spacing of 3 m x 1 m, in 10 rows of 37 plants each. The eight central rows were considered, each with 35 plants per row giving a total of 280 plants and a working area of 840 m2. For the evaluations, each plant was taken as one basic unit (bu) with an area of 3 m2, resulting in 280 bu. The characteristics under evaluation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ricinus communis L.; Plateau model; Experimental accuracy; Uniformity.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902019000200276
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Performance analysis of a trickle irrigation subunit installed in an apple orchard 52
Soccol,Olívio José; Ullmann,Mario Nestor; Frizzone,José Antônio.
Studies were carried out to evaluate the "xique-xique" irrigation system of a trickle irrigated subunit. Initial results showed that the system's performance was average, any Emission Uniformity, Statistical Uniformity and Coefficient of Global Variation were 74.51, 77.69, and 22.31%, respectively. The efficiency parameters were below expectations, and values of Application Efficiency (Ae), Storage Efficiency (Se), Deep Percolation (Dp), Deficit Degree (DD) and Adequacy Degree (a) were 100, 47.83, 0, 52.17 and 0% respectively. By adopting new management procedures, it was possible to improve the system's efficiency, reaching values of 90.20, 91.68, 9.80, 8.32 and 52.87% for Ae, Se, Dp, DD and "a", respectively.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Irrigation; Efficiency; Uniformity.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600017
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Performance of jundiá larvae, Rhamdia quelen, fed on probiotic supplemented diets 2
Pinto, Vilson Borba; Costenaro-Ferreira, Cristiano; Oliveira, Paulo Leonardo Silva; Oliveira, Rodrigo Ribeiro Bezerra de; Piedras, Sérgio Renato Noguez; Pouey, Juvêncio Luis Osório Fernandes.
Since probiotics have proved to be a viable alternative to antibiotics as enhancers of animal growth, the performance, uniformity and mortality rates of the jundiá (Rhamdia quelen) larvae fed on diets with different probiotics were evaluated. Jundiá larvae, aged four days post hatching, were fed during 21 days with the following diets, in four replicates, namely, CO: control feed, without probiotics; PP: feed with Pichia pastoris; SB: feed with Saccharomyces boulardii; BT: feed with Bacillus cereus var. toyoi. Among the tested probiotic, Bacillus cereus var. toyoi had the best results due to the fact that the larvae were 25% heavier than CO at the end of the first week; the difference increased to 28% by the end of the trial. Further, BT also improved...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.06.03.04-3 fish; Uniformity; Bacillus cereus var. toyoi; Saccharomyces boulardii; Pichia pastoris.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/27106
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Potassium distribution in drip irrigation with fertigation for different injection distances in the main line 70
Bomfim,Guilherme V. do; Manzano,Juan; Azevedo,Benito M. de; Vasconcelos,Denise V.; Viana,Thales V. de A..
The purpose of this research was to evaluate the K2O distribution uniformity by surface drip irrigation at Universitat Politecnica de Valencia, Valencia, Spain (39º 29′ N, 0º 23′ W, 20 m). The irrigation was performed by drip lines with not-compensated emitters, spaced 0.3 m. The fertigation was realized using a fertilizer injector pump of electric action with injection of 0.25 h. The experimental design used completely randomized blocks with five treatments and four replications. The treatments consisted of injection in five distances, located at 10; 20; 30; 40; 50 m of the first drip line. Samples were collected in emitters located at the start, at 1/3, at 2/3 and at the end of the drip lines. The nutrient concentration was determined by flame...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Uniformity; Chemigation; K2O.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600011
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Size of plots for experiments with cactus pear cv. Gigante 91
Guimarães,Bruno V. C.; Donato,Sérgio L. R.; Aspiazú,Ignacio; Azevedo,Alcinei M.; Carvalho,Abner J. de.
ABSTRACT The definition of experimental plot size is an essential tool to ensure precision in statistical analysis in experiments. The objective of this study was to estimate the plot size for the cactus pear cv. Gigante using the Modified Maximum Curvature Method, under the semi-arid conditions of Northeastern Brazil. The uniformity test was conducted at the Federal Institute of Bahia, Guanambi Campus, Bahia state, Brazil, during the agricultural period from 2009 to 2011. The spatial arrangement was composed of ten rows with 50 plants each, whose evaluated area was formed by the eight central rows with 48 plants per row, making 384 plants and area of ​​153.60 m2. The following variables were evaluated: plant height; length, width and thickness of cladode;...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Uniformity; Descriptors; Opuntia ficus-indica.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000500347
Registros recuperados: 11
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