Uso de baixo volume oleoso e assistência de ar no controle de plantas daninhas

Teixeira, Emerson da Silva; Osipe, Jethro Barros; Gandolfo, Ulisses Delvaz; Oliveira, José Francirlei de; Gandolfo, Marco Antonio; Osipe, Robinson

doi:10.5433/1679-0359.2010v31n4sup1p1229

Cited by 4 publications

(3 citation statements)

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“…Large-scale agriculture is supported by the application of phytosanitary products, that require the use of safe and efficient products, as well as application techniques that allow such needs to be met (Simões et al, 2009), without disregarding the concern about enhancing the production process to reduce environmental impacts (Teixeira et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Potential risk of drift from inclined fan nozzles

Moraes

Saab

Gandolfo

et al. 2019

Rev. bras. eng. agríc. ambient.

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Pest, disease and weed control in large-scale crops depend on the application of agrochemicals. These applications are subject to several factors that can lead to drift. The objective of this study was to evaluate the effect of spray nozzles with inclined flat jet, on the drift. The drift was collected in a 10 m wind tunnel, with a spray system inside. The samples were collected in 5 horizontal points, from 2.0 to 6.0 m away from the spray nozzle and 5 points in the vertical, from 0.1 to 0.5 m away from the lower base of the wind tunnel, totaling 25 sample points. The mixture applied was glyphosate (isopropylamine salt, 1080 g a.e. ha-1) with 2,4-D (dimethylamine salt, 1.005 g a.e. ha-1). The nozzles J3D 100 025, JGC 120 02, JAP 110 015 and ADI 110 015 (control), inclined by 37.5º, 20º, 15º and 0º, respectively, were used in two directions of spray: upwind and downwind of the air flow direction. The nozzles J3D, JGC and JAP, when inclined downwind reduced the drift by 16.1, 2.6 and 39.0%, respectively, relative to the control, and when inclined upwind, reduced drift by 53.4, 3.9 and 18.6%, respectively, relative to the control. Spray nozzles with second-generation air-induction inclined flat jet (JAP) and standard inclined flat jet (J3D) reduce the collected drift compared to the nozzle without inclination, regardless of wind flow direction.

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Section: Introductionmentioning

confidence: 99%

Potential risk of drift from inclined fan nozzles

Moraes

Saab

Gandolfo

et al. 2019

Rev. bras. eng. agríc. ambient.

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“…Atualmente, a redução dos volumes de calda utilizados na agricultura também é necessária, visando à maior competitividade agrícola e sustentabilidade ambiental (TEIXEIRA et al, 2010). O volume de calda influencia diretamente na eficiência operacional da aplicação, pois o tempo gasto nas atividades de reabastecimento altera significativamente o ritmo operacional dos pulverizadores (ANTUNIASSI & BOLLER, 2011).…”

Section: Introductionunclassified

Caracterização da pulverização de fungicida na cultura do trigo com pontas hidráulicas e atomizadores rotativos de discos

et al. 2014

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RESUMO:O objetivo deste trabalho foi avaliar as características de pulverização de pontas hidráulicas e atomizadores rotativos de discos, utilizando diferentes volumes de calda, na cultura do trigo, bem como seus rendimentos operacionais. Foram CHARACTERIZATION OF FUNGICIDE APPLICATION ON WHEAT CROPS WITH HYDRAULIC NOZZLES AND ROTARY-DISK ATOMIZERS ABSTRACT:The study aimed to evaluate the pulverization characteristics of the hydraulic nozzles and rotary-disk atomizer with different spraying rates on wheat crops, and their operational capacity. For this reason were installed two experiments, on the harvest years of 2009 and 2010. In first year was used the cultivar Fundacep 30, and in the second year the cultivars Pampeano and Nova Era. The experiments evaluating the pulverization with flat nozzles and hollow cone spray nozzle, both with the pulverization rate of 120 L ha -1 , and rotary-disk atomizer with 24 and 34 L ha -1 in low volume in oil. The evaluated parameters were the droplet density and the medium volumetric diameter on the upper, mid and lower third throughout the analysis of water sensible cards. Also, was calculated the operational capacity of the traits. The results showed that the rotarydisk atomizer with 24L ha -¹ showed a higher droplet density on the upper third, however, there was no difference among the mid and lower thirds treatments. The rotary-disk atomizer presented droplets of smaller medium volumetric diameter compared to the hydraulic nozzles that presented high droplet heterogeneity. The higher operational capacity was achieved with the atomizers, due the lower spray volume used by this equipment.

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“…A utilização de baixos volumes de aplicação possibilita maior efi ciência operacional (ANTUNIASSI & BOLLER, 2011) e permite uma maior competitividade agrícola e sustentabilidade ambiental (TEIXEIRA et al, 2010).…”

Section: Introductionunclassified

Controle de doenças foliares em trigo com equipamentos de pulverização de baixo volume de aplicação

et al. 2014

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RESUMO A utilização de equipamentos de pulverização com menor volume de aplicação no controle de doenças é uma tendência na agricultura. Portanto, este trabalho tem por objetivo determinar a efi ciência de equipamentos com baixo volume de INTRODUÇÃOO trigo é um dos cereais mais cultivados no mundo. No Brasil, o cereal é cultivado principalmente na região Sul. Porém, esta região caracteriza-se por apresentar um clima úmido e chuvoso, com temperaturas amenas, o que acarreta em alta incidência de doenças foliares. Entre as doenças incidentes na cultura, destacam-se as manchas foliares, causadas por Drechslera tritici-repentis, Bipolaris sorokiniana e Stagonospora nodorum; e a ferrugem da folha, causada por Puccinia triticina. As doenças causam diminuição no potencial produtivo da cultura,

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Uso de baixo volume oleoso e assistência de ar no controle de plantas daninhas

Cited by 4 publications

References 0 publications

Potential risk of drift from inclined fan nozzles

Potential risk of drift from inclined fan nozzles

Caracterização da pulverização de fungicida na cultura do trigo com pontas hidráulicas e atomizadores rotativos de discos

Controle de doenças foliares em trigo com equipamentos de pulverização de baixo volume de aplicação

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