Ecology, Environment and Conservation Paper

IMPACT OF TILLAGE AND NUTRIENT MANAGEMENT PRACTICE ON RICE CROP YIELD AND NUTRIENT UPTAKE IN CALCIORTHENTS OF BIHAR, INDIA

Pittala Manoj Kumar, Dhirendra Kumar Roy, Santosh Kumar Singh and Mritunjay Kumar

Abstract

The experiment entitled “Impact of different tillage and nutrient management strategies on productivity and profitability of direct seeded rice (Oryza sativa L.)” was conducted in an ongoing trial at the Agronomical Research Farm (plot no. 5) of Tirhut College of Agriculture, Dholi (RPCAU, Pusa) during Kharif 2019. The experiment was laid out in a ‘split-plot design’ with tillage practices under main plot treatments and nutrient management practices as subplot treatments. The results revealed that Zero tillage + Residue management and Zero tillage increased the grain and straw yield of direct seeded rice to the tune of 14.03 %; 9.27 % and 10.15 %; 6.1 % over Conventional tillage respectively. While SSNM based on Nutrient expert and 60 % RDN + GSGN + 100% PK of RDF increased grain and straw yield of direct seeded rice to the tune of 14.91 %; 7.73 %, and 12.07 %; 5.52 % over RDF, respectively. The significantly higher total NPK uptake by the crop was found in Zero tillage + Residue management among tillage practices and in SSNM based on Nutrient expert among nutrient management treatments however, both the tillage and nutrient management practices failed to have a significant influence on grain protein content whereas total crop micronutrient viz., Zn. Fe, Cu and Mn uptake was found maximum in Zero tillage + Residue management among tillage practices and were non-significant across nutrient management treatments.