Impact of SSNM and STCR-based nutrient management on yield and nitrogen, phosphorus and potassium uptake of maize

Abstract

The field experiment was conducted during kharif 2024 at Post Graduate Research Farm, Agronomy Section, College of Agriculture, Dhule to study yield and nutrient uptake of maize (Zea mays L.).” on variety Phule Champion as influenced by nutrient management through SSNM and STCR fertilization approaches. The experiment was laid out in randomized block design with three replications. The treatments comprised of eight nutrient management viz., T1-Absolute control, T2-GRDF (120: 60: 40 N: P2O5: K2O kg ha-1 + FYM 10 t ha-1), T3-SSNM Yield target 8 t ha-1, T4-SSNM Yield target 10 t ha-1, T5-SSNM Yield target 12 t ha-1, T6-STCR Yield target 8 t ha-1, T7-STCR Yield target 10 t ha-1 and T8-STCR Yield target 12 t ha-1. Among the treatments, SSNM through fertilizers for targeted yield of 12 t ha-1 (T5) recorded higher grain yield, stover yield, biological yield and harvesting index. Among different yield target based fertilizer application treatments, the maximum nutrient content in grain, stover and uptake of nutrients in the grains was recorded with the application of fertilizer for SSNM Yield target 12 t ha-1 (T5), but it was found to be statistically at par with application of STCR Yield target 12 t (T8), SSNM Yield target 10 t ha-1 (T4) and STCR Yield target 10 t ha-1 (T7) for nitrogen uptake by grains. Treatment SSNM Yield target 12 t ha-1 (T5) was found to be statistically at par with application of STCR Yield target 12 t (T8) and SSNM Yield target 10 t ha-1 (T4) for phosphorus and potassium uptake by grains. Similarly, the maximum uptake of nutrients in the stover was recorded with the application of fertilizer for SSNM Yield target 12 t ha-1 (T5), which was highly superior over the rest of the treatments. The application of Absolute control (T1) recorded the lowest nutrient content in grain, stover and uptake of nutrients in grains and stover.