University of California

Almond growers reduce pesticide use in Merced County field trials


Lonnie C. Hendricks

Publication Information

Hilgardia 49(1):5-10. DOI:10.3733/ca.v049n01p5. January 1995.

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California almond growers commonly use organophosphate pesticides, which can be disruptive to biological control. Sprays during the spring and summer kill beneficial arthropods, including parasitic and predatory insects and spiders. In addition, pesticides have been detected by Cal EPA in winter fog and in runoff water flowing into the rivers of the San Joaquin Valley, which may lead to further restrictions in pesticide use. However, some almond growers are able to grow nuts with low insect damage without using toxic insecticide sprays. This article reports the results of a 6-year study, begun in 1988, of three almond orchards in Merced County to identify grower practices that permit reduced pesticide use.

Hendricks L. 1995. Almond growers reduce pesticide use in Merced County field trials. Hilgardia 49(1):5-10. DOI:10.3733/ca.v049n01p5
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