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The Effect of Different Spray Liquids on the Foliar Retention of Agricultural Sprays by Wheat Plants in a Canopy by M Clare Butler Ellis; Duncan A Webb; Nigel M Western is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract The aim of this work was to examine the effect of liquid properties on spray retention in a range of situations representative of practical pesticide application. Liquids with different physical properties were sprayed with conventional flat‐fan and air‐induction nozzles onto outdoor‐grown wheat plants (__Triticum aestivum__ L cv Axona) at growth stages between GS 22 and GS 35. Since total retention is affected by leaf surface as well as plant growth stage and canopy density, the experiments included spraying both single leaves and groups of plants with different canopy densities. Retention on whole plants was strongly influenced by plant growth and canopy properties. Individual leaf surfaces were not as water‐repellent as was found previously for younger indoor‐grown plants, reducing the effect of dynamic surface tension on retention. This, combined with the increased probability of droplets hitting foliage in a denser canopy, gave reduced differences in retention between liquids when compared with similar measurements made previously on younger plants. With a leaf area index greater than 7, retention on whole plants was almost independent of liquid. Air‐induction nozz

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Author

M Clare Butler Ellis; Duncan A Webb; Nigel M Western

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1526-498X)

Published

2004

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)