A Comparative Study of Leaf Color Chart Based and Farmers Practice of Nitrogen Fertilizer Application on Rice under On-farm Conditions of Bangladesh
A.S.M. Iqbal Hussain
An on-farm experiment was conducted to know the performance of Leaf Color Chart (LCC) based N application in rice compared with conventional farmers practice during aman season 2002 in nine farmer s field at Gazipur districts of Bangladesh. Nine rice genotypes were included in the experiment and each genotype was cultivated in each farmers plot. Basal application of fertilizer was made with P, K, S and Zn. Top dress of N was made according to the treatments. LCC based N application produced slightly higher but insignificant grain yield than conventional farmers N application practice. N use efficiency was much higher in LCC based N application. 19-37 kg Nha -1 was saved in LCC and it reduces disease and insect infestation in rice. It plays a positive role on environment by reducing the use of agrochemicals.
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