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FMC SOLUTIONS

Rice Bug

Rice_Palay_Rice bug_Talstar 8SC_Marshal 200SC_Insecticide

Leptocorisa oratorius F. and Leptocorisa acuta Thunberg. are the common species of rice bug. It sucks the contents of rice grains from pre-flowering spikelets to soft dough stage that causes empty or unfilled grains and discoloration. 

What are the symptoms?

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Check for the presence of insect:

 √  Eggs - oval, shiny, and reddish brown eggs along the midrib of leaf

 √  Nymphs - slender and brown-green nymphs and adults feeding on endosperm of rice grains

 √  offensive smell

Check for damage:

 √   small or shriveled grains,

 √  deformed or spotty grains,

 √  empty grains, and

 √  erect panicles.

Impact to the crop

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Both adults and nymphs feed on grains at milking stage. They can be serious pests of rice and sometimes reduce yield by as much as 30%.

How to control?

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√ Removal of weeds from fields and surrounding areas

√ Level fields with even applications of fertilizer and water

√ Synchronized crop planting.

√ Use of biological control agents like  wasps, grasshoppers and spiders attack rice bugs or its eggs.

√ Chemical Control - use of insecticide registered for control of rice bugs

Source: http://www.knowledgebank.irri.org

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