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Studies were conducted on screening and management of paddy, maize
and sorghum genotypes against Rhyzopertha dominica and the results
showed that there is gradual increase in per cent weight loss with
increase in storage period which ranged from 0.83 to 24.67 in
paddy, 1.08 to 16.22 in maize and 0.67 to 20.05 in sorghum. After
180 days of storage, the minimum per cent seed damage was found in
the paddy cv. Sumati, maize hybrid Massile and in sorghum cv. M
35-1. In paddy RNR 2465, Samba Mahsuri, in maize DHM 111, DHM 117,
GK 3076 and in sorghum SPV 462, CSV 15 and M 35-1 have maintained
the minimum germination standards for a period of 60, 30 and 60
days respectively. In paddy, maximum population build up of R.
dominica was found in Improved Samba Mahsuri and minimum in RNR
2645, in maize minimum population build up was noticed inDHM 117
and maximum in cv. GK 3076, in sorghum minimum population build up
was recorded in CSH 16 while maximum in cv SPV 462 after 180 days
of storage respectively. The mortality of R. dominica with various
grain protectants has shown that in paddy the mortality of R.
dominica is low compared to maize and sorghum.
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R398
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