Effect of phosphorus and bioinoculants on yield, nutrient uptake and economics of long duration pigeonpea (Cajanus cajan)

Singh, A.K. and Singh, R.S. (2012) Effect of phosphorus and bioinoculants on yield, nutrient uptake and economics of long duration pigeonpea (Cajanus cajan). Indian Journal of Agronomy, 57 (3). pp. 265-269.

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Abstract

A field experiment was conducted during kharif season of 2008–09 and 2009–10 to study the response of phosphorus (0, 25, 50 and 75 kg P2O5/ha) and bioinoculants (control, PSB, PGPR and PSB + PGPR) on yield and yield attributes, nutrient uptake and economics of pigeonpea (Cajanus cajan L.). Application of 75 kg P2O5/ha recorded the highest grain yield (2.19 t/ha) and yield attributes, nutrient uptake, gross returns (1,19,858/ha), net returns ( 90,500/ha) and B:C ratio (3.09), which was significantly superior over 25 kg P2O5/ha. Agronomic (AEp), recovery (REp) and physiological (PEp) efficiency was the highest with 25 kg P2O5/ha, followed by 50 and 75 kg P2O5/ha. REp was the highest with 50 kg P2O5/ha. Dual seed inoculation with PSB + PGPR produced the highest yield (2.24 t/ha) and yield attributes, nutrient uptake, gross returns (1,22,377/ha), net return (93,498/ha) and B: C ratio (3.23), being significantly superior over PGPR, PSB and control. AEp and REp was the highest with PSB followed by PSB + PGPR and PGPR, while PEp was the maximum with PGPR. The available phosphorus in soil after harvest of the crop was the highest (22.2 kg/ha) with application of 75 kg P2O5/ha.

Item Type: Article
Uncontrolled Keywords: Agronomic efficiency, Bioinoculents, P balance, Physiological efficiency, Pigeonpea, Phosphorus, Recovery efficiency
Author Affiliation: Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh-221 005
Subjects: Plant Protection
Social Sciences > Agricultural Economics
Divisions: Pigeonpea
Depositing User: Mr B Krishnamurthy
Date Deposited: 17 May 2013 07:57
Last Modified: 17 May 2013 07:57
Official URL: http://www.indianjournals.com/ijor.aspx?target=ijo...
URI: http://eprints.icrisat.ac.in/id/eprint/10551

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