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Title: EFFECTS OF ALDICARB ON COTTON INSECTS AND PLANT GROWTH AND YIELD

Author
item CHU, CHANG CHI
item NATWICK, ERIC - COOP RES, HOLTVILLE, CA
item HENNEBERRY, THOMAS

Submitted to: Sweetpotato Whitefly Progress Review Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 6/1/1999
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Soil application of aldicarb reduced numbers of sweetpotato whitefly, Bemisia tabaci Gennadius, in studies conducted in 1983 and 1984, but not silverleaf whitefly, B. argentifolii Bellows and Perring, in studies conducted from 1988 and 1990, on upland cotton, Gossypium hirsutum L. Aldicarb-treated plants also had significantly fewer thrips, Frankliniella spp., leafhoppers, Empoasca spp., and damsel bugs, Nabis spp. early in the season, than untreated plants. Aldicarb-treated plants exhibited more vigorous plant growth than untreated plants. In mid- to late season from 21 June to 26 July in 1993 when the silverleaf whitefly population density was low (8.0 nymphs/cm2 leaf disk for untreated plants) fewer silverleaf whitefly occurred on aldicarb-treated plants (4.4 nymphs/cm2 leaf disk). Lint yield increase was 42% as compared to untreated plants. In 1994, when silverleaf whitefly population density was high (18.9 nymphs/cm2 leaf disk for untreated plants) during mid- to late season (from 15 June to 27 July) aldicarb was not effective.