Rationalising fertilizer rates for sorghum. II. Optimising the dose with relevance to the soil test values

Balasundaram, C.S. and Ramulu, U.S. (1980) Rationalising fertilizer rates for sorghum. II. Optimising the dose with relevance to the soil test values. Turrialba, 30 (4). pp. 385-389.

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Abstract

In field trials on a shallow red soil of Bhavanisagar, sorghum cv. CSH5 given combinations of 0-200 kg N + 0-39 kg P + 0-48 kg K; 50% N + 100% P and K were applied at sowing and the remaining N 30 days later. K had no significant effect on grain yields. Grain yields increased significantly with increase in N rate (max. yields were obtained with 176-185 kg N/ha and opt. yields with 163-171 kg N and with increase in P rate (max. yields were obtained with 22.9-24.0 kg P/ha and opt. yields with 19.0-19.6 kg P). Economic rates of fertilizer application were also calculated

Item Type: Article
Author Affiliation: Department of Soil Science and Agricultural Chemistry, Agricultural College and Research Institute, Coimbatore 641 003, Tamil Nadu, India
Subjects: Plant Production
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 13 Dec 2012 04:01
Last Modified: 13 Dec 2012 04:01
URI: http://eprints.icrisat.ac.in/id/eprint/9069

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