weedy rice-an emerging threat to paddy production

Publication Date : 16/07/2015

Author(s) :

ARYA S R , Dr. Ameena, M.

Volume/Issue :
Volume 1
Issue 7
(07 - 2015)

Abstract :

Weedy rice are complex of Oryza morphotypes widely distributed in the commercial rice fields in more than 50 countries of Asia, Africa and America where farmers have switched to direct seeding due to labour shortage and high cost. Heavy infestation of weedy rice in rice fields during recent years had forced the farmers to abandon the crop due to huge reduction in crop yield. Hence weedy rice infestation in the farmer’s field required immediate attention and a management programme aimed at local eradication at the field level followed by integrated management strategies. Integrated management strategies like use of clean seeds, stale seed bed, pre plant application of herbicides to prevent the early emergence and use of wiper device to selectively dry the panicles of weedy rice in standing crop to prevent the build-up of soil seed bank are viable technologies for managing the difficult to control weed in rice.

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