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Pedosphere
Year: 2009  |  Volume: 19  |  Issue: 3  |  Page No.: 398 - 402

Growth Responses of Wheat Cultivars to Rock Phosphate in Hydroponics

M. ASHRAF, RAHMATULLAH, M.A. MAQSOOD, S. KANWAL, M.A. TAHIR and L. ALI    

Abstract: Screening cultivars to grow under conditions of low phosphorus (P) availability and utilize P efficiently from compounds of low solubility in soils may be beneficial to overcome poor plant growth in P-deficient soils. The growth behavior and P utilization efficiency of seven wheat cultivars grown in hydroponics were studied, using rock phosphate as P source. The wheat cultivars grown for 30 days were significantly different in biomass accumulation, P uptake and P utilization efficiency. The dry matter production of all the cultivars was significantly correlated with P uptake, which in turn correlated to the drop in the root medium pH. The ranking of wheat cultivars on the basis of dry matter yield, P uptake and P utilization efficiency was Zamindar 80 > Yecora > C 271 > WL 711 > Barani 83 > PARI 73 > Rohtas. The cultivar Zamindar 80 appeared to possess the best growth potential in P-deficient soils.

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