Effect of fertilizer N on nodulation, acetylene-reducing activity, and N uptake in pigeon pea (Cajanus cajan)

Authors

  • Umesh K. Kaushik Department of Microbiology, Haryana Agricultural University, Hisar -125 004, India
  • R.C. Dogra Department of Microbiology, Haryana Agricultural University, Hisar -125 004, India
  • S.S Dudeja Department of Microbiology, Haryana Agricultural University, Hisar -125 004, India

Keywords:

Nodulation, Acetylene-reducing activity, Pigeon pea, Fertilizer N, N2 fixation, Rhizobium

Abstract

The effect of fertilizer N as urea on the early growth of two pigeon pea [Cajanus cajan (L.) Millsp.) cultivars with Bradyrhizobium inoculation under pot culture conditions was investigated. Bradyrhizobium inoculation alone increased nodulation, acetylene-reducing activity (ARA), and root and shoot N. A considerable improvement in the root system of pigeon pea over control was observed at 20 kg N ha-1 while at 40 and 60 kg N ha-1 the root system was the poorly developed and, concomitantly, this affected other N2-fixing parameters viz. nodule number, nodule dry weight, ARA, shoot weight, and root and shoot N.

Downloads

Issue

Volume 72 Number 1

Section

Research Notes