Long term effect of continuous fertilization by organic and inorganic sources on rice productivity
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Date
1993
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Kerala Agricultural University
Abstract
Pooled analysis of grain yield data for25 years (1961 to 1985) generated from a permanent
manurial experiment with tall indica rice varieties revealed that during the first crop season
(kharif), the treatment receiving combined application of cattle manure and NPK was significantly
superior to others. The above treatment was on par with combined application of cattle manure,
green leaves and NPK during the second crop season (rabi). The increases in yield by the former
treatment over NPK alone were 7.6 and 5.6 per cent respectively during kharif and rabi seasons.
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Citation
Journal of Tropical Agriculture, 31(2), 204-209.