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Title: SILVERLEAF WHITEFLY POPULATIONS AND TRICHOME DENSITIES ON UPLAND COTTONS

Author
item CHU, CHANG CHI
item NATWICK, ERIC - UOFCA COOP EXT HOLTVILLE
item HENNEBERRY, THOMAS
item NELSON, DENNIS
item BUCKNER, JAMES - NDSU, FARGO, ND
item FREEMAN, THOMAS - NDSU, FARGO, ND

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: 7/1/2001
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: We studied relationships between leaf trichome and silverleaf whitefly (SLW), Bemisia argentifolii Bellows and Perring, densities on abaxial leaf surface of nine upland cotton, Gossypium hirsutum L., cultivars. The hairy leaf cultivar Stoneville 474 had the highest and the smooth leaf cultivar El028 had the lowest numbers of SLW eggs, nymphs and adults. Among the eight smooth leaf cultivars, the four okra leaf cultivars as a group had fewer SLW eggs, nymphs and adults compared with the four normal leaf cultivars. The top young leaves on main stem terminals had fewer numbers of SLW eggs, nymphs and adults, but had higher numbers of trichomes compared with older leaves.