EFFICIENCY OF SOURCES OF PHOSPHORUS AND BIOREGULATORS ON PIGEONPEA (CAJANUS CAJAN)

Chief EditorJ. S. Sandhu
Print ISSN 0250-5371
Online ISSN 0976-0571
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ABSTRACT

A field experiment was carried out during the rainy season of 2001 and 2002 on clay loam soil of Udaipur to study relative efficiency of sources of P, phosphorus solubilizers and bioregulators on productivity and profitability of pigeonpea (Cajanus cajan (L.) Millsp ). Among P sources, application of high grade rock phosphate (HGRP) + farm yard manure (FYM) in the ratio of 1:3+ elemental sulphur (ES) @ 25 kg/ha composted for 30 days increased seed yield by 56.6 % over control and was at par with DAP. It also improved stover and protein yield, N and P uptake and available soil P at harvest of crop. The efficiency parameters viz. relative yield, agronomic efficiency, relative economics and apparent phosphorus recovery of the above sources were also comparable to DAP. Foliar application of thiourea @ 1000 ppm and 2, 3, 5-tri-iodobenzoic acid (TIBA) @ 50 ppm at pre flowering and pod formation increased the yield of pigeonpea significantly over water spray. Application of HGRP+ FYM (1:3) + ES (25 kg / ha) also had a significant positive impact on these aspects of pigeonpea.

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REFERENCES

Avnish Kumar and Kushwaha, H.S. (2006) Response of pigeonpea (Cajanus cajan) to sources and levels of phosphorus under rainfed condition. Indian J. Agron. 51(1):60-62.
Mahala, H.L., Shaktawat, M.S. and Shivran, R.K. (2006) Direct and residual effects of sources and levels of phosphorus and farmyard manure in maize ( Zea mays) - mustard (Brassica juncea) cropping sequence. Indian J. Agron. 51(1):10-13.
Mehta, Y.K. and Sharma, D.D. (2002) Effect of bioregulators on growth and yield of pea cultivars. (In) Plant Physiology for Sustainable Forestry, Agri-Horticulture and Industry, Pointer Publisher, Jaipur pp. 23-28.
Ramamoorthy, K., Balasubramanian, A. and Arokiaraj, A. (1997) Studies on substitution of single super phosphate by Mussoorie rock phosphate and biofertilizers as a source of phosphate in rainfed pigeonpea. Mysore J. Agri. Sci. 31:133-136.
Shankarlingappa, B.C., Brahmaprakash, G.P. and Krishnegowda, K.T. (2002) Integrated phosphorus management in pigeonpea (Cajanus cajan). (In) Proceedings of Second Agronomy Congress on Balancing Food and Environmental Security : a Continuing Challenge, (Singh, Panjab, Ahlawat, I.P.S. and Gautam, R.C. eds.). Indian Society of Agronomy, Indian Agricultural Research Institute, New Delhi. pp. 251-252.

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Legume Research

EFFICIENCY OF SOURCES OF PHOSPHORUS AND BIOREGULATORS ON PIGEONPEA (CAJANUS CAJAN)

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