Abstract
In a greenhouse pot experiment, eight wheat cultivars were evaluated for growth and phosphorus utilization efficiency (PUtE) at low (NaHCO3-P, 6.5 mg kg') and adequate (75 mg kg' applied) P !eve& The plant growth at vegetative stage and PUtE among cultivars was not found to be significantly different at low soil P level At adequate p level, however, cultivars showed significant differences in cloy matter production (1.68 g to 2.83 g per pot in Pasban-90 and Bakhtawar-92, respectively) and iu PUtE that ranged from 0.45 (Pasban-90) to 0.88 (Sarsabz). At 'maturity, applied P increased grain and strizw yields of all cultivars over the law P rate; MH-97 showed maximum increase (173%) while Pasban-90 produced minimum increase (98%) in grain yield. The cultivars exhibited substantial and significantdifferences in phosphorus physiological efficiency index (PPEI) at both P levels. The magnitude of difference among cultivars was greater (0.33 to 0.45) at low as compared to adequate P (0.24 to 0.29). Variability among cultivars for PPEI at both P levels indicated differential efficiency of these cultivars to utilize absorbed P.
S.M.Alant, S.A.Shah, Sikandar Ali . (2004) DIFFERENTIAL RESPONSE OF WHEAT CULTWARS TO PHOSPHORUS APPLICATION, The Journal Soil & Environment , Volume 23, Isuue (1.2).
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