2025, Vol. 8, Special Issue 3

author(s)
YV Singh, SK Singh, S Srivastava, SB Kumar and PK Bharteey

abstract
A fertility field experiment was conducted in Persiya village, Chandauli district, to study the correlation between soil test values and fertilizer doses of nitrogen, phosphorus, and potassium on rice yield in Inceptisol soil. Fertilizer adjustment equations were developed by the All India Coordinated Research Project, Institute of Agricultural Science, Banaras Hindu University, Varanasi. The results showed that targeted rice yields of 38 q ha⁻¹ and 43 q ha⁻¹ were achieved using plant nutrients based on the targeted yield concept, known as soil test crop response (STCR) technology. This approach increased yields by 12.75% and 27.77% compared to general fertilizer recommendations. The highest net returns (Rs. 34,695 and Rs. 43,360) were recorded in treatments where fertilizers were applied according to soil test values (STCR treatment). This method also preserved the availability of soil nutrients. Therefore, applying plant nutrients based on soil test values (STCR technology) is crucial for maximizing returns and maintaining soil fertility. Fertilizer doses were validated for achieving the target yields of 38 and 43 q ha⁻¹ in farmers' fields, with yields falling within a 10% deviation, confirming the superiority of soil test-based fertilizer recommendations. This approach can be adopted in regions with similar soils and agro-climatic conditions worldwide to enhance rice production.