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Varietal Differences in Susceptibility to Thrips Injury in Upland Cotton 1
Author(s) -
Ballard W. W.
Publication year - 1951
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1951.00021962004300010009x
Subject(s) - thrips , agriculture , citation , soil water , division (mathematics) , agronomy , agricultural science , horticulture , geography , agroforestry , mathematics , political science , environmental science , biology , archaeology , law , ecology , arithmetic
W. W. BALLARD INFESTATION by thrips frequently causes serious injury to young cotton plants. The injury results in reduced stands or in reduced yields due to stunting and delayed fruiting of the plants. Under moderate thrips infestation, damage is usually restricted to mutilation of leaves, which temporarily retards development of the plants without seriously impairing subsequent growth. In many cases injury and decreased vigor of cotton plants due to thrips may cause increased susceptibility to infection by seedling disease organisms. Terminal buds of plants are frequently destroyed by thrips, causing development of low, spreading vegetative branches which are often broken by passage of mechanized equipment or which may interfere with efficient operation of mechanical pickers. Numerous reports on thrips injury to cotton and