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How to scout for colaspis in rice - video

Description:
For several years Arkansas rice farmers have had to deal with grape colaspis, a small beetle, whose larvae feed on the roots of rice. Rice drilled into soybean stubble is particularly susceptible to damage from this insect. Larval feeding can cause more than 50 percent reduction in stand. This season colaspis has caused stand reductions in a few rice fields in Acadia, Evangeline and St. Landry parishes. This short video will train you to scout for colaspis in rice. (Runtime: 3:58)

Primary Audience:
General
Rural

Resource Updated:
2/24/2012 2:22:02 PM

colaspis larva
Colaspis larva. Larvae overwinter in the soil after hatching from eggs laid on the previous year’s crop. When the rice begins to grow, the larvae move up in the soil and begin feeding on the fine root hairs. Root pruning results in stunting of plants, nutritional deficiencies and in some cases, plant death. The larva will develop into the pupal stage.
stand reduction
Symptoms of colaspis damage in a rice field – missing plants in rows. Look for plants that are dead and dying near healthy plants that are beginning to decline. Damage is typically clumped in distribution and may be concentrated in high spots in the field.
FileType
Colapsis BroadbandWMV
Colapsis Dial-upWMV

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Last Updated: 2/24/2012 2:22:02 PM

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