Equipment for crop protection. Methods for the laboratory measurement of spray drift. Wind tunnels

2015 ◽  
Keyword(s):  
Crop Protection ◽  
Laboratory Measurement ◽  
Wind Tunnels ◽  
Spray Drift

scholarly journals Effect of insecticide formulation and adjuvant combination on agricultural spray drift

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7136 ◽  
Author(s):  
Collin J. Preftakes ◽  
Jerome J. Schleier ◽  
Greg R. Kruger ◽  
David K. Weaver ◽  
Robert K.D. Peterson
Keyword(s):  
Wind Tunnel ◽  
Crop Protection ◽  
Spray Drift ◽  
Indirect Methods ◽  
Product Formulation ◽  
Spray Solution ◽  
Droplet Sizes ◽  
Wind Tunnel Data ◽  
Field Experimentation ◽  
Strong Agreement

Loss of crop protection products when agricultural spray applications drift has economic and ecological consequences. Modification of the spray solution through tank additives and product formulation is an important drift reduction strategy that could mitigate these effects, but has been studied less than most other strategies. Therefore, an experimental field study was conducted to evaluate spray drift resulting from agricultural ground applications of an insecticide formulated as a suspension concentrate (SC) and as a wettable powder (WP), with and without two adjuvants. Droplet sizes were also measured in a wind tunnel to determine if indirect methods could be substituted for field experimentation to quantify spray drift from these technologies. Results suggest that spray drift was reduced by 37% when comparing the SC to the WP formulation. As much as 63% drift reduction was achieved by incorporating certain spray adjuvants, but this depended on the formulation/adjuvant combination. The wind tunnel data for droplet spectra showed strong agreement with field deposition trends, suggesting that droplet statistics could be used to estimate drift reduction of spray solutions. These findings can be used to develop a classification scheme for formulated products and tank additives based on their potential for reducing spray drift.

scholarly journals Ecological impact in ditch mesocosms of simulated spray drift from a crop protection program for potatoes

2006 ◽  
Vol 2 (2) ◽  
pp. 105-125 ◽  
Author(s):  
Gertie HP Arts ◽  
Laura L Buijse-Bogdan ◽  
J Dick M Belgers ◽  
Caroline H van Rhenen-Kersten ◽  
Rene PA van Wijngaarden ◽  
...  
Keyword(s):  
Ecological Impact ◽  
Crop Protection ◽  
Spray Drift

Speed control of large wind tunnels

1958 ◽  
Vol 4 (39) ◽  
pp. 146-147
Author(s):  
L.S. Drake ◽  
J.A. Fox ◽  
G.H.A. Gunnell
Keyword(s):  
Speed Control ◽  
Wind Tunnels ◽  
Large Wind
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