engleski

Efficacy of bright blue sticky trap against Thrips tabaci in onion in two meteorologically different growing seasons

In 2001-2002 efficiency of bright blue sticky trap for mass trapping of onion thrips (Thrips tabaci) in onion crops was investigated. The aim was to reduce the damage caused by thrips on the onion leaves. The lowest percentage of a damaged leaf surface was determined on plants which were treated twice with deltamethrin. The sticky traps did not prove to be efficient for thrips control. In the drier year 2001, the mean yield of onion was not statistically significantly different between four treatments (insecticide, 1 sticky trap per plot, 2 sticky traps per plot and control). 2002 was more convenient for onion growing and the highest mean yield was in plants, treated with the insecticide.

sticky traps of bright blue colour ; onion thrips ; Thrips tabaci ; onion ; efficiency

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