Effect of 25 years of continuous fertilizer use on response to applied nutrients and uptake of micronutrients by rice-wheat-cowpea system

Singh, Veer and Ram, Nand (2005) Effect of 25 years of continuous fertilizer use on response to applied nutrients and uptake of micronutrients by rice-wheat-cowpea system. Cereal Research Communications, 33 (2-3). pp. 589-594. ISSN 0133-3720

Text crc.33.2005.2-3.124.pdf Restricted to Repository staff only until 30 June 2025. Download (795kB)

Abstract

In a twenty five years old long-term fertilizer experiment with rice-wheat-cowpea system on a mollisol at Pantnagar; rice and wheat responded well to applied N, Zn and FYM over the years; whereas, responses to other applied nutrients are improving with the passage of time owing to decline in their availability in soil. Uptake of micronutrients by the entire cropping sequence of rice-wheat-cowpea varied from 143 to 597, 2274 to 6169, 384 to 1234 and 119 to 521 g ha ⁻¹ for Zn, Fe, Mn and Cu, respectively. The highest removal of Zn by crops was observed under 100%NPK+Zn, while that of Fe, Mn and Cu was under 100%NPK+FYM. Removal of micronutrients by the annual cropping cycle depleted the availability of Zn, Fe, Mn and Cu in soil in the range of 0.02–.0.37, 0.1–1.8, 0.1–1.6 and 0.1–0.2 mg kg ⁻¹ , respectively under different treatments.

Actions (login required)

Edit Item