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

Research Notes
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
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Keywords

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

How to Cite

Effect of fertilizer N on nodulation, acetylene-reducing activity, and N uptake in pigeon pea (Cajanus cajan). (1995). Tropical Agriculture, 72(1). https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/2615
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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.
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