تلخیص
A field experiment was conducted to evaluate how much P should be applied to the rice and wheat crops under rice-wheat cropping system. Phosphorus doses were set in such a way that each crop in the rice-wheat rotation received 0- 100 kg P205 ha-7 i.e., 0-0, 100-0, 75-25, 50-50, 25-75, and 0-100 kg P205 ha-1 , respectively. Nitrogen and potassium were applied uniformly to all the plots @120 and 60 kg ha-1, respectively. A total of six treatments were repeated four limes in randomized complete block design. Plant height and number of tillers planfl, paddylwheat grain and straw yields were influenced significantly by the application of P. On the basis of overall results, 50-50 kg P2O5 ha-z gave results statistically close to 100 kg P205 ha-'.These results suggest that it is appropriate to apply half of recommended P to rice and other half to wheat instead of applying all P either to rice or wheat. Therefore, keeping in view, the economics and objectives of the experiment, application of 50-50 kg P2O5 ha4 may be recommended for rice and wheat in rice-wheat cropping system.
Alamgir Ahis, Muhammad Yaseen, Jared Khalids, Abdul Ghafoort, M. Asif All. (2004) DETERMINATION OF OPTIMUM PHOSPHORUS RATE IN RICE-WHEAT CROPPING SYSTEM: GROWTH AND YIELD PARAMETERS, The Journal Soil & Environment , Volume 23, Isuue (1.2).
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