Interactions of agrochemicals applied to peanut; part 3: Effects on insecticides and prohexadione calcium

Chahal, G. S. and Jordan, D. L. and Brandenburg, R. L. and et al, . (2012) Interactions of agrochemicals applied to peanut; part 3: Effects on insecticides and prohexadione calcium. Crop Protection. 8 p..

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Abstract

A wide range of agrochemicals can be applied in a peanut production system to control various stresses and manage crop growth and development. Field and laboratory experiments were conducted in North Carolina to define biological and physicochemical interactions when insecticides (fenpropathrin and lambda-cyhalothrin) or plant growth regulator (prohexadione calcium) were applied in combination with other agrochemicals including fungicides, herbicides, and micronutrients. Fenpropathrin or lambda-cyhalothrin combinations did not injure peanut in 2008 and 2009. Two sprays of prohexadione calcium improved row visibility and reduced main stem height compared with one prohexadione calcium spray irrespective of agrochemical combinations. In many instances, applying prohexadione calcium with other agrochemicals resulted in lower main stem height compared to prohexadione calcium alone. In one of the experiments, prohexadione calcium with prothioconazole plus tebuconazole lowered fall army worm population compared with prohexadione calcium alone. Addition of boron, manganese, and 2,4-DB to fenpropathrin, lambda-cyhalothrin, and prohexadione calcium combinations changed solution pH dramatically. Prohexadione calcium had the least effect on pH of the carrier.

Item Type: Article
Additional Information: This research was supported financially by the North Carolina Peanut Growers Association and USAID Peanut CRSP (grant LAG-G- 00-96-0013-00).
Uncontrolled Keywords: Agrochemicals, Combinations, Precipitates, Solution pH.
Author Affiliation: Department of Crop Science, Box 7620, 100 Derieux Place, 4207 Williams Hall, North Carolina State University, Raleigh, NC 27695, United States
Subjects: Plant Protection
Divisions: Groundnut
Depositing User: Mr Siva Shankar
Date Deposited: 24 Aug 2012 06:09
Last Modified: 24 Aug 2012 06:09
Official URL: http://dx.doi.org/10.1016/j.cropro.2012.05.006
URI: http://eprints.icrisat.ac.in/id/eprint/7504

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