Productivity and economics of rice (Oryza sativa) through phosphorus management in North-East India

SASMITA TRIPATHY; S L MEENA; SUBHASH BABU; T K DAS; SHIVA DHAR

doi:10.56093/ijas.v91i5.113109

Authors

SASMITA TRIPATHY ICAR-Research Centre for North-Eastern Hill region, Umiam, Meghalaya 793 103, India
S L MEENA ICAR-Research Centre for North-Eastern Hill region, Umiam, Meghalaya 793 103, India
SUBHASH BABU ICAR-Research Centre for North-Eastern Hill region, Umiam, Meghalaya 793 103, India
T K DAS ICAR-Research Centre for North-Eastern Hill region, Umiam, Meghalaya 793 103, India
SHIVA DHAR ICAR-Research Centre for North-Eastern Hill region, Umiam, Meghalaya 793 103, India

https://doi.org/10.56093/ijas.v91i5.113109

Keywords:

Direct-seeded rice, Economics, Phosphorus solubilizing bacteria, Yield

Abstract

A field experiment was planned and executed in randomized block design at Umiam during kharif 2019 to determine the grain yield and economics of upland directseeded rice (Oryza sativa L.) in North-Eastern Hill region under varying phosphorus management practices. The soil of the experimental plot was sandy-clay loam in texture with pH 4.2, high in organic carbon (1.62%) and available K (354 kg/ha), medium in available N (256 kg/ha) and low in available P (6.3 kg/ha). The plot managed with organic nutrient sources i.e. 25% FYM + 25% vermicompost + 25% poultry manure + PSB produced significantly higher number of yield attributes subsequently resulting in higher grain yields. This was followed by 100% RDP fertilized plot and 75% RDP+ PSB + AMF. In terms of economics, 100% RDP plot proved to be the most cost-effective owing to the less cost of fertilizers as compared to organic nutrient sources.

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