Author : S.C.Gupta.

Address : (All India Coordinated Research Project on Chickpea, RAK College of Agriculture, Sehore – 466 001 (India).

Abstract : Response of pigeonpea to potassium and biofertilizers inoculation.

Journal : Indian J. Applied & Pure Bio.

Volume No. : 20(1)

Publish Year : 2005

Page No. : 87-90.

Main Data : Field experiment conduted ont eh response of pigeonpea to potassium and biofertilizers application indicates significant increase in the nodule number and nodule dry weight to the tune of 2.5 to 4.0 folds and 2.0 to 3.6 folds respectively in the treatments receiving Rhizobium inoculation as against control i.e. 20 kg N +50 kg P2O5/ha (6 nodules/plant and 14 mg nodule dry weifht /plant) with maximum increase in 20 kg N + 50 mg P2O5 + 20 kg K2O/ha + Rhizobium + PSB inoculation (24 nodules/plant and 51 mg nodule dry weight/plant). Further Rhizobium and PSB alone and dual inoculation with Rhizobium +PSB at 20 kg N + 50 mg P2O5/ha nutrient level could increase the grain yield of pigeonpea by 16.8, 11.1 and 25.3% respectively over control i.e. 20 kg N + 50 kg P2O5/ha alone (14.10 q/ha). Highest yield increase of 36% and net profit of Rs. 6011/ha over control was recorded under the treatment 20 kg N + 50 kg P2O5 + 20 kg K2O/ha +Rhizobium + PSB inoculation which indicates the necessity of use of potassium and dual inoculation of Rhizobium + PSB in pigeonpea cultivation in Madhya Pradesh.