RESPONSE OF VEGETABLE COWPEA TO PHOSPHORUS AND BIOFERTLUZERS IN OLD ALLUVIAL ZONE OF WEST BENGAL

Article Id: ARCC3861
Citation :- RESPONSE OF VEGETABLE COWPEA TO PHOSPHORUS AND BIOFERTLUZERS IN OLD ALLUVIAL ZONE OF WEST BENGAL.Legume Research-An International Journal.2003.(26)
Chattopadhyay Arup*, Dutta Dhananjoy
Address : Regional Research Station, BCKV, Majhian (W.B.), India

Abstract

A field study on vegetable cowpea (ev. Bidhan Barbati-1l was conducted during pre-kharifseason of 1999 and 2000 to study the effect of phosphorus and biofertilizers (Rhizobium and phosphatesulubilizing bacteria) on nodulation and yield in a sandy-loam soil of Old Alluvial Zone, West Bengal, Four levels of phosphorus (0, 40, 60, 80 kg/ha) as main-plot treatments and four sub-plot treatments comprising no inoculation, single inoculation with Rhizobium and Phosphate-solubilizing bacteria, dual inoculation with both of them were arranged in split-plot design with three replications. Phosphorus fertilization increased the pod yield and nodulation significantly up to 80 kg/ha. Single or dual inoculation with biofertilizers resulted in conspicuous increase in nodule number and weight, leg-haemoglobin content and Nitrogenase activity of nodules and pod yield over no inoculation. However, dual inoculation with Rhizobium and Phosphate-solubilizing bacteria resulted better response than their individual inoculations. Economic evaluation revea1ed that dual inoculation with biofertilizers gave maximum net return and B/C ratio.

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