Author(s):

Debasis Mahata and Ashim Chandra Sinha

Abstract: A field experiment was conducted during the pre kharif season 2012 and 2013 at instructional farm of Uttarbanga Krishi Viswavidyalaya, Pundibari, West Bengal, to Evaluation of organic sources for nitrogen management in grain amaranth (Amaranthus hypochondriacus) in integrated nutrient management with 14 treatments. The field experiment was laid out in Randomized Block design with three replications. The treatment receiving organic sources of nitrogen significantly influenced the height of plant, leaf area index, dry matter accumulation, crop growth rate, T₁₄ was found to be superior to other treatments and the yield components of grain amaranth were significantly differs with the combine sources organics than the sole application of organics over control treatment. The highest pooled seed yield of 16.9 q.ha^-1 was recorded under T₁₄ treatment followed by 14.6 q.ha^-1 at T₁₂ and T₈ respectively. The maximum higher net return accrued to T₈ and followed by accrued to T₁₀ during both the year respectively. The higher benefit cost ratio at T₂, T₁₀ and T₈ showed a high paying potential of Grain amaranth. So, we conclude that farmers of North Bengal can adopt grain amaranth in high or medium high land situation with the application of poultry manure instead of chemical fertilizer.

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