Author(s): A. B. MANDAL, H. M. THAPA, D. PAL AND A. MANNA

Abstract: In West Bengal wheat growing climate is widely different than other states where the duration is about 140 – 150 days. In West Bengal winter persist not more than 100 – 110 days generally. Thus, an ideal climate required for optimum wheat crop is meager in the state. More over wheat is grown generally after the harvest of aman rice resulting delay in sowing (late sown condition). Besides wheat crop is affected to sudden rise in temperature resulting initiation of reproductive phase. During grain developmental phase the temperature exceeds 35ºC. this reduces grain size and grain filling which ultimately results substantial loss in wheat yield. No studies have been made on incomplete grain filling (sterility) as well as effect of boron application on grain filling under new alluvial soil zone. Therefore, the present studies have been made on the above object in addition to nitrogen concentration of whole plant....

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