Impact of Organic Manures and Humic Acid on Nutrient Dynamics and Crop Performance in Pearl Millet–Chickpea Cropping System

A field experiment was conducted at Agronomy Instructional Farm, Department of Agronomy, C. P. College of Agriculture, SDAU, Sardarkrushinagar to study the effect of organics and humic acid on kharif pearlmillet and their residual effect on succeeding chickpea during kharif- 2022 to 2023 and rabi 2022-23 to 2023-24. The soil of the experimental plot was loamy sand in texture, alkaline in reaction, normal in salinity, low in organic carbon, available N, medium in available P2O5 and K2O and low DTPA- extractable Fe, Mn, Zn and Cu. The treatments were applied in kharif pearlmillet crop and their residual effect was studied in succeeding chickpea crop.

Residual effect of FYM @ 10 t ha-1 recorded significantly increased nutrients content viz., N (), P, K, Fe in seed and stover and nutrients uptake viz., N, P, K, Fe, Mn, Zn, Cu by seed and stover were significantly increased due to the residual effect of FYM @ 10 t ha-1. Pooled results also revealed that residual effect of soil application of humic acid @ 30 kg ha-1 significantly increased nutrient uptake viz., N, P, K, Fe, Mn, Zn and Cu by seed and stover.