نتایج جستجو برای: onion thrips
تعداد نتایج: 8262 فیلتر نتایج به سال:
To develop an insecticide resistance management program for onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), on onions (Allium spp.), we surveyed populations in commercial onion fields in New York and evaluated their susceptibility to the two most widely used classes of insecticides plus two new insecticides during 2003-2005. All insecticide evaluations were conducted using the T...
J. Econ. Entomol. 80(5): 1051-1056 (1987) ABSTRACT Data collected in 1983 from six commercial onion fields in upstate New York indicate that dispersion characteristics of onion thrips (OT), Thrips tabaci Lindeman, are precisely described by Taylor's power law (S2 = amb), with Ina = 0.517, SIn, = 0.059, b = 1.89, and Sb = 0.028 (n = 47; r2 = 0.99: P :$ 0.0001). Additionally, during the main peri...
During the past two decades, onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), has become a global pest of increasing concern in commercial onion (Allium cepa L.), because of its development of resistance to insecticides, ability to transmit plant pathogens, and frequency of producing more generations at high temperatures. T. tabaci feeds directly on leaves, causing blotches and p...
Onion thrips (Thrips tabaci (Lindeman) is the most serious insect pest causing damage to crop. This study aimed evaluate effects of some botanical oils including cotton, castor bean and bitter cucumber on infesting onion. Field experiments were conducted at Gezira state during two winter seasons (2015/16-2016/17). Two in first season (2015/16) experimental farm University Research Station Farm ...
The is an overview of our knowledge of thrips in Slovenia. It includes a check-list of species recorded, indicating the plants from which specimens have been taken and the collectors. Special attention is given to work on thrips during the last five years, focusing on some species of potential economical importance. but in the inner land single specimens can be found as early as March and as la...
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