A pot experiment was conducted in 2015 at S.K.N. College of Agriculture, Jobner during kharif season using
cowpea as a test crop to investigate the effect of phosphorus management in cowpea (Vigna unguiculata L.) grown on
saline soils. Three levels each of saline soils (EC 1, 4.0 and 6.0 dS/m), phosphorus sources (SSP, DAP and PROM), and
biofertilizers (control, PSB and PSB + VAM), were tested in completely randomized design with three replications. The
results indicated that application of soil salinity having EC 1dS/m recorded the maximum yield, phosphorus and
potassium content and uptake and nitrogen uptake of cowpea over rest of the treatments. But in case of nitrogen content
lowest at EC 1dS/m. Result further indicate that application of phosphorus source PROM recorded the maximum and
significantly higher yield, nitrogen, phosphorus and potassium content and uptake of cowpea over rest of the treatments.
However dual inoculation with PSB + VAM recorded the maximum and significantly higher significantly higher yield,
nitrogen, phosphorus and potassium content and uptake of cowpea over rest of the treatments. Between treatments the
application of EC 1dS/m + PROM + Biofertilizer (PSB+VAM) proved superior in all these parameters over other
treatments.

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