Drift from Field Crop Sprayers Using an Integrated Approach: Results of a Five-Year Study

Nuyttens, David; Schampheleire, Mieke De; Baetens, Katrijn; Brusselman, Eva; Dekeyser, Donald; Verboven, Pieter

doi:10.13031/2013.36442

Cited by 60 publications

(38 citation statements)

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“…This is considered one of the greatest problems of modern agriculture. Fine droplets are more highly recommended when it comes to depositing the product on the target, providing better control results, however, this can bring about loss by evaporation and drift (NUYTTENS et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Pesticide application windows in the region of Uberlândia-MG, Brazil

Cunha¹,

Pereira²,

Barbosa³

et al. 2016

Biosci. J.

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ABSTRACT:The success of the pesticide application is subject to meteorological conditions. The objective of this work was to determine the application windows suitable for carrying out the application of pesticides, using as parameters the analysis of historical data (2009)(2010)(2011)(2012)(2013)(2014) of air temperature, relative air humidity, wind speed, and rainfall of Uberlândia-MG. With an electronic spreadsheet, and using the ideal meteorological conditions for applying pesticides (an air temperature above 30°C, relative air humidity above 55%, wind speed between 3 and 12 km h -1 , and rainfall data lower than 0.2 mm h -1 ) as a parameter, the data were crossed with the aim to determine the times of day that weather conditions were ideal to obtain better efficiency in the application. According to the results, the relative air humidity was the main restricting criterion for the application windows, which are concentrated, on average, between 18:00 and 12:00 in the summer, and between 24:00 and 9:00 in the winter. The number of viable hours for a good application varied from 35 in the first fortnight of September to 198 in the second fortnight of March, demonstrating the great variability among the application windows throughout the year, which makes the generic recommendations of spraying time inadequate if the month of the year is not taken into consideration.

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Section: Introductionmentioning

confidence: 99%

Pesticide application windows in the region of Uberlândia-MG, Brazil

Cunha¹,

Pereira²,

Barbosa³

et al. 2016

Biosci. J.

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“…Spray drift is defined as the quantity of plant protection product carried out of the sprayed (treated) area by air currents during application. It persists as one of the major problems in modern agriculture (Tsai et al, 2005;Nuyttens et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Field data and prediction models of pesticide spray drift on coffee crop

Alves

Cunha

2014

Pesq. agropec. bras.

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-The objective of this work was to generate drift curves from pesticide applications on coffee plants and to compare them with two European drift-prediction models. The used methodology is based on the ISO 22866 standard. The experimental design was a randomized complete block with ten replicates in a 2x20 split-plot arrangement. The evaluated factors were: two types of nozzles (hollow cone with and without air induction) and 20 parallel distances to the crop line outside of the target area, spaced at 2.5 m. Blotting papers were used as a target and placed in each of the evaluated distances. The spray solution was composed of water+rhodamine B fluorescent tracer at a concentration of 100 mg L -1 , for detection by fluorimetry. A spray volume of 400 L ha -1 was applied using a hydropneumatic sprayer. The air-induction nozzle reduces the drift up to 20 m from the treated area. The application with the hollow cone nozzle results in 6.68% maximum drift in the nearest collector of the treated area. The German and Dutch models overestimate the drift at distances closest to the crop, although the Dutch model more closely approximates the drift curves generated by both spray nozzles.Index terms: Coffea arabica, drift curves, environmental contamination, hydropneumatic sprayer, nozzles. Dados de campo e modelos de estimação de deriva nas aplicações de agrotóxicos na cultura do caféResumo -O objetivo deste trabalho foi gerar curvas de deriva a partir de aplicações de agrotóxicos em cafeeiro e compará-las a dois modelos europeus de simulação de deriva. A metodologia utilizada baseia-se na norma ISO 22866. Utilizou-se o delineamento experimental de blocos ao acaso, com dez repetições, em arranjo fatorial 2x20 com parcelas subdivididas. Os fatores avaliados foram: dois tipos de pontas de pulverização (cone vazio com e sem indução de ar) e 20 distâncias paralelas à linha de cultivo fora da área-alvo, espaçadas em 2,5 m. Foram colocados papéis filtrantes como alvo, em cada uma das distância avaliadas. A calda foi composta por água+corante fluorescente rodamina B na concentração de 100 mg L -1 , para detecção por fluorimetria. Aplicou-se volume de calda de 400 L ha -1 , por pulverizador hidropneumático. A ponta com indução de ar reduz a deriva até 20 m de distância da área tratada. A aplicação com ponta de jato cônico resulta em deriva máxima de 6,68% no ponto de coleta mais próximo da área tratada. Os modelos Alemão e Holandês superestimam a deriva nas distâncias mais próximas à cultura, embora o modelo Holandês se aproxime mais das curvas de deriva geradas por ambas as pontas de pulverização.Termos para indexação: Coffea arabica, curvas de deriva, contaminação ambiental, pulverizador hidropneumático, pontas de pulverização.

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“…Spray drift from herbicide can cause crop protection chemicals to be deposited in undesirable areas [5]. It has serious consequences such as damage to sensitive adjoining crops, damage to susceptible off-target areas, environmental contamination, illegal herbicide residues, lower yield results, and health risks to animals and people [6]- [10].…”

Section: Introductionmentioning

confidence: 99%