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Journal of Biological Sciences

Year: 2001  |  Volume: 1  |  Issue: 10  |  Page No.: 912 - 914

Comparative Study of Nitrogen, Phosphorus and Potassium Fertilizers on Yield and Nutrient Uptake by Rice

M. Uddin, M. M. Rahman, M. A. Hoque and S. Begum


The field experiment was conducted in a silt loam soil to compare the effect of N, P and K fertilizers on the yield and nutrient uptake by rice and post-harvest soil properties. Seven treatments were T0 (control), T1 (Urea + Triple superphosphate + Muriate of potash), T2 (Urea + Diammonium phosphate + Muriate of potash), T3 (Urea + Triple superphosphate + Ash), T4 (Urea + Single superphosphate + Muriate of potash), T5 (Urea + Single superphosphate + Ash) and T6 (Urea + Diammonium phosphate + Ash). Application of fertilizers significantly increased the grain and straw yields of rice. Panicle length, effective tillers hill-1 and filled grains panicle-1 were also increased significantly due to application of fertilizers but the increase of 1000-grain weight was insignificant. Grain yield was highest with T3 (Urea + Triple superphosphate + Ash) treatment (5.46 t ha-1) which was followed by T1 (Urea + Triple superphosphate + Muriate of potash) treatment (5.30 t ha-1), while the lowest was in control. The grain yields were increased by 47.0 to 68.0% over control due to application of fertilizers. The results on straw yield reflected similar trend as in grain yield. Application of fertilizers caused a significant increase during NPKS uptake by rice. The application of fertilizers had a negligible influence on pH, CEC, organic matter, total N, available P, exchangeable K, and available S content of the post-harvest soils compared to their initial status.

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