Brassica is an oil seed crop of Pakistan which mostly suffers from low Phosphorus (P) availability in calcareous
soils A sand culture experiment was conducted to study growth response and phosphorus utilization efficiency of
ten Brassica cultivars in a green house. Plants were grown for 30 days using half strength modified Johnsons
nutrient solution containing two levels of P (20 IJM P and 200 IJM Pl. The biomass production of all cultivar varied
significantly (p<0.05) both at adequate and stress P levels. The dry matter yield correlated significantly (p<005)
with the P uptake (r=091) and P utilization efficiency (r=080) The Brassica cultivar B.SA proved to be the most
efficient P user and therefore seems to have the highest potential for growth on soils with poor P availability
Keywords: Brassica, phosphorus, uptake, utilization, cultivars.
