Buscar
Mostrando ítems 11-20 de 847
Influência dos volumes de pulverização, tipos de ponta e adjuvantes sobre o controle da phoma de café
(2017-01-01)
Pesticides are often applied under incorrect conditions such as inappropriate nozzles types and high spray volumes. Such errors result in spray drift and run off, causing inefficiency on the control of pests and diseases, ...
Optimization of spray deposition and Tetranychus urticae control with air assisted and electrostatic sprayer
(Univ Sao Paolo, 2017-01-01)
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. ...
Dispersion and evaporation of droplets amended with adjuvants on soybeans
(2013-02-01)
Quantification of the effects of adjuvants on droplet behaviour on plant surfaces is needed to improve pesticide spray application efficiency for soybeans. Dispersion and evaporation of single 300-μm diameter droplets ...
Dispersion and evaporation of droplets amended with adjuvants on soybeans
(2013-02-01)
Quantification of the effects of adjuvants on droplet behaviour on plant surfaces is needed to improve pesticide spray application efficiency for soybeans. Dispersion and evaporation of single 300-μm diameter droplets ...
Assessing the deposition and canopy penetration of nozzles with different spray qualities in an oat (Avena sativa L.) canopy
(Elsevier B.V., 2016-03-01)
Consistent spray coverage that is evenly distributed throughout the canopy is necessary to control pest populations that can negatively affect yield. As applicators are switching to Coarser spray quality nozzles to reduce ...
Fine-tuning of UAV control rules for spraying pesticides on crop fields
(Institute of Electrical and Electronics Engineers - IEEELimassol, 2014-11)
The use of pesticides in agriculture is essential to maintain the quality of large-scale production. The spraying of these products by using aircraft speeds up the process and prevents compacting of the soil. However, ...
SPECTRUM AND VELOCITY OF DROPLETS OF SPRAY NOZZLES WITH AND WITHOUT AIR INDUCTION
(Soc Brasil Engenharia Agricola, 2018-03-01)
The aim of this study was to evaluate the spectrum and the velocity of droplets produced by nozzles with and without air induction, under different pressures and flow rates. The experiment was conducted in a completely ...
Spray retention on coffee leaves associated with type and concentration of adjuvants
(2019-01-01)
Agricultural spray adjuvants (ASA) are widely used in pesticide applications to enhance the performance of pesticides. The aim of this research was to investigate the effects of ASA on static surface tension (SST) and ...
Modes of entry of petroleum distilled spray-oils into insects: a review
(Department of Agroenvironmental Sciences and Technologies, 2009-12)
Petroleum oils are some of the oldest and safest pesticides in use. In spite of the numerous improvements achieved in oil technology, the mode of entry and the insecticide action mechanism of these products have been the ...
Loss of effectiveness of protective clothing after its use in pesticide sprays and its multiple washes
(Taylor & Francis Inc, 2017-01-01)
Protective clothing is used as a barrier against pesticides when working with agricultural sprays. The aim of this study was to evaluate the pesticide penetration, retention, and repellence of the material and seams of a ...