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J. S. Sandhu

Vice Chancellor, SKN Agriculture, University, Jobner, VC, NDUAT, Faizabad, Deputy Director General (Crop Science), Indian Council of Agricultural Research (ICAR), New Delhi

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EFFECT OF PHOSPHORUS SOURCES, SOLUBILIZERS AND BIOREGULATORS ON DRY MATTER, YIELD AND QUALITY OF PIGEONPEA [CAJANUS CAJAN (L.)]

B.S. Meena*, D.D. Sharma

Affiliations

¹Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur - 313 001, India

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Cite article:- Meena* B.S., Sharma D.D. (2025). EFFECT OF PHOSPHORUS SOURCES, SOLUBILIZERS AND BIOREGULATORS ON DRY MATTER, YIELD AND QUALITY OF PIGEONPEA [CAJANUS CAJAN (L.)]. Legume Research. 33(4): . doi: .

ABSTRACT

A field experiment was conducted during the rainy seasons of 2001 and 2002 on clay loam soil of Udaipur, to evaluate the effect of phosphorus sources, solubilizers and bioregulators on dry matter, yield, and quality of pigeonpea [Cajanus cajan(L.) Millsp]. Among phosphorus sources, application of rock phosphate 34% P2O5 / 74 microns ( RP 34 / 74) + farm yard manure ( FYM) in the ratio of 1:3 + elemental sulphur (ES) at 25 kg/ha composted for 30 days significantly increased total dry matter at harvest, seed yield, protein content, net returns and total uptake of N and P by pigeonpea over other treatments and was at par with diammonium phosphate (DAP) and RP (34/ 74) + FYM in the ratio of 1:3+ phosphate- solubilizing bacteria (PSB) at 2 kg / ha. The maximum build up of soil available N was estimated under application of rock phosphate 18% P2O5 / 150 microns (RP 18 / 150) +FYM (1:3) +ES (25 kg / ha) over initial status, while highest apparent gain in soil N was recorded with RP (34/ 74) + FYM (1: 3) + ES (25 kg / ha). Foliar application of thiourea 1,000 ppm at pre flowering and 20 days thereafter significantly increased dry matter, seed yield, water soluble carbohydrate, N and P uptake by crop and net return over water spray being at par with 2, 3, 5- tri- iodobenzoic acid (TIBA). Application of RP (34/ 74) + FYM (1: 3) + ES (25 kg / ha) along with thiourea @ 1,000 ppm had significant and positive effect on dry matter, seed yield and nutrient uptake of pigeonpea

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