Site specific nutrient management for crop yield maximization using two soil types of Bilaspur District of C.G. on grain and straw yield

Abstract

The field experiment was conducted A pot experiment was carried out at the Department of Soil Science and Agricultural Chemistry, BTC College of Agriculture and research Station, Bilaspur, during Kharif season 2015-16. On the basis of 1st season results farmer’s field demonstration was also carried out at field of farmer’s (from where bulk of soils were collected for pot experiment) during Rabi season 2015-16. The soils used for pot experiment were two type i. e. Inceptisol and Vertisol. Both the soils were collected from two different locations of Bilaspur district. Collected soils were air dried and filled in cemented pots. The treatments constituted with application of all nutrients applied at optimum level known as All (SSNM dose) while in others, one of the nutrient elements from all the nutrient treatments (All) was omitted. There were eleven treatments for each type of soil and three replications with completely randomized design. All treatments were common for both the soils except omission of Fe and Mn in case of Vertisol and omission of Ca and Mg in case of Inceptisol were kept keeping the concept of soil reaction. After addition of all treatments, rice (MTU-1010) was transplanted in three hills/pot with 2-3 seedlings in each hill. In eleven treatments. Grain and straw yields of rice in Vertisol were significantly reduced with the omission of N, P and S in comparison to the treatment T1 that received all the nutrients. The yield reductions were more pronounced with N and P omission pots (43.2 %, 41.7 % and.34.1 %, 31.8 % respectively). Reductions in grain and straw yields in S omitted pots were 11.3 % and 10.6 %, respectively. And Grain and straw yields of rice in Inceptisol were significantly reduced with the omission of N, P, and S in comparison to the treatment (T1) that received all the nutrients. The yield reductions were more pronounced with N and P omission (42.8 %, 38.9 % and.32.8 %, 31.5 % respectively). Reductions in grain and straw yields in S omitted pots were 13.9 % and 12.5 %, respectively.