Abstract:
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.
M. Uddin , M. M. Rahman , M. A. Hoque and S. Begum , 2001. Comparative Study of Nitrogen, Phosphorus and Potassium Fertilizers on Yield and Nutrient Uptake by Rice. Journal of Biological Sciences, 1: 912-914.
Subscribe Today 
