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Asian Journal of Plant Sciences
Year: 2002  |  Volume: 1  |  Issue: 4  |  Page No.: 470 - 471

Response of Wheat to Applied Soil Potassium

M. Tariq and M. Shah    

Abstract: Response of wheat to applied potassium was studied on Peshawar valley soil. Different levels of potassium @ 0, 30, 60, 90, 120 and 150 kg K2O ha-1 along with a basal dose of nitrogen and phosphorus @ 150 kg N and 100 kg P2O5, respectively were applied to wheat. Results showed that yield and yield components of wheat were not significantly affected with potassium fertilization, because the test soil had already sufficient potassium for plant growth and might be some of K+ released from non-exchangeable sources. However, 60 kg K2O ha-1 gave maximum fresh, dry, straw and grain yields and indicated initial level of K2O supplemented with 60 kg K2O ha-1 was sufficient for maximum yields of wheat for the test soil. Potassium uptake by leaves and potassium content of soils at pre heading and post harvesting stages was significantly increased in a linear fashion with increasing applied potassium levels in soil.

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