Effect of the volume rate of application on the glasshouse performance of crop protection agent/adjuvant combinations

The effects of volume rate of application on the glasshouse performance of three recently developed crop protection agent/adjuvant combinations are discussed. High volume rates of application on easy-to-wet foliage, such as potato (Solanum tuberosum, L.) caused reduction of the adjuvant-enhanced per...

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Veröffentlicht in:Pesticide Science 1996-11, Vol.48 (3), p.205-217
Hauptverfasser: Grayson, B.T, Price, P.J, Walter, D
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Walter, D
description The effects of volume rate of application on the glasshouse performance of three recently developed crop protection agent/adjuvant combinations are discussed. High volume rates of application on easy-to-wet foliage, such as potato (Solanum tuberosum, L.) caused reduction of the adjuvant-enhanced performance of dimethomorph seen at low volume rates. These reductions were largely attributable to relatively lower spray retention with spray drop coalescence and run-off being observed, particularly at the higher adjuvant rates. On difficult-to-wet foliage (wheat, Triticum aestivum, L.; oat, Avena sativa, L.) two different effects were seen. With a metconazole formulation/'Dobanol' 91-6 combination on wheat, no systematic changes in performance were observed with change in volume rate. With a flamprop-M-isopropyl formulation/'Dobanol' 25-7 combination, statistically significant increases in performance were seen with increasing volume rate. In both cases the observations can be explained as the result of a combination of interacting factors involving spray pattern, spray deposition and, by inference, foliar uptake of the crop protection agent, the proportions of which differed between the two cases. It is suggested that the effect of volume rate of application on performance of adjuvant-containing formulations is investigated on easy-to-wet foliage to determine the upper limits and on difficult-to-wet foliage to determine any variation in performance that may occur. Such information will guide the design of field trials and may aid interpretation of field results.
doi_str_mv 10.1002/(SICI)1096-9063(199611)48:3<205::AID-PS459>3.0.CO;2-#
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Sci</addtitle><date>1996-11</date><risdate>1996</risdate><volume>48</volume><issue>3</issue><spage>205</spage><epage>217</epage><pages>205-217</pages><issn>0031-613X</issn><issn>1526-498X</issn><eissn>1096-9063</eissn><coden>PSSCBG</coden><abstract>The effects of volume rate of application on the glasshouse performance of three recently developed crop protection agent/adjuvant combinations are discussed. High volume rates of application on easy-to-wet foliage, such as potato (Solanum tuberosum, L.) caused reduction of the adjuvant-enhanced performance of dimethomorph seen at low volume rates. These reductions were largely attributable to relatively lower spray retention with spray drop coalescence and run-off being observed, particularly at the higher adjuvant rates. On difficult-to-wet foliage (wheat, Triticum aestivum, L.; oat, Avena sativa, L.) two different effects were seen. With a metconazole formulation/'Dobanol' 91-6 combination on wheat, no systematic changes in performance were observed with change in volume rate. With a flamprop-M-isopropyl formulation/'Dobanol' 25-7 combination, statistically significant increases in performance were seen with increasing volume rate. In both cases the observations can be explained as the result of a combination of interacting factors involving spray pattern, spray deposition and, by inference, foliar uptake of the crop protection agent, the proportions of which differed between the two cases. It is suggested that the effect of volume rate of application on performance of adjuvant-containing formulations is investigated on easy-to-wet foliage to determine the upper limits and on difficult-to-wet foliage to determine any variation in performance that may occur. Such information will guide the design of field trials and may aid interpretation of field results.</abstract><cop>London</cop><pub>John Wiley &amp; Sons, Ltd</pub><doi>10.1002/(SICI)1096-9063(199611)48:3&lt;205::AID-PS459&gt;3.0.CO;2-#</doi><tpages>13</tpages></addata></record>
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identifier ISSN: 0031-613X
ispartof Pesticide Science, 1996-11, Vol.48 (3), p.205-217
issn 0031-613X
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1096-9063
language eng
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source Wiley Online Library - AutoHoldings Journals; Periodicals Index Online
subjects adjuvants
alcohol ethoxylates
application
application rate
Avena sativa
Biological and medical sciences
dimethomorph
efficacy
flamprop
flamprop-M-isopropyl
formulation
Fundamental and applied biological sciences. Psychology
fungicide
fungicides
herbicide
late blight
metconazole
Methods and techniques. Experimental designs. Plant protection equipments
oat
pesticide mixtures
Phytopathology. Animal pests. Plant and forest protection
plant protection
potato
powdery mildew
Solanum tuberosum
Triticum aestivum
wetters
wheat
title Effect of the volume rate of application on the glasshouse performance of crop protection agent/adjuvant combinations
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