Flash flood or submergence is a common phenomenon in rice growing rainfed lowland areas that seriously affects crop establishment leading to severe yield losses. A few submergence-tolerant rice varieties have been developed by introgressing SUB1 gene into mega rice varieties of South Asia. Two of these, Swarna-Sub1 and Sambha Mahsuri-Sub1, are already released in India for the commercial cultivation. Performance of these varieties can be further enhanced through adoption of appropriate management practices both in nursery and in main field. Two on-station field experiments were conducted using Swarna-Sub1 during the wet season (kharif) of 2011 at Rice Research Station, Chinsurah, Hooghly, West Bengal (India). Results of these experiments revealed that the use of lower seeding density (25 g

Intercropping provides farmers profit-oriented and subsistenceoriented requirements from the same piece of land. The objective of a 2-yr experiment on intercropping rice (Oryza sativa L.) and legumes was to assess effect on yield in India. Rice was intercropped with mungbean (Vigna radiata L.), soybean [Glycine max (L.) Merr.), peanut (Arachis hypogaea L.), ricebean (Vigna umbellata L.) and blackgram [Vigna mungo (L.) Hepper.) on a well-drained sandy loam soil in the Gangetic Alluvial Plains (Fleuvudent). Rice/legume planting ratios (row basis) were 2:1, 4:1 simultaneously planted or legumes were planted (2:1 planting ratio) at 30 d after planting of rice (deferred planting). Control plots were monocrops of rice and legumes with each species fertilized according to soil test recommendations. Rice + mungbean, rice + soybean, rice + peanut and rice + blackgram intercroppings resulted in higher yields than that of rice + ricebean intercropping. Rice + ricebean and rice + blackyielded higher when deferred planting was practised. All intercropping treatments of rice + legumes save rice + ricebean

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An experiment with sixteen cropping systems (pure and intercroppings) was conducted during the kharif season of 1985 and 1986. The sixteen cropping systems were: sole rice, sole mungbean, sole soybean, sole peanut, sole blackgram, rice + mungbean (2:1), rice + mungbean (4:1), rice + mungbean deferred (2:1), rice + soybean (2:1), rice + soybean (4 : 1), rice + soybean deferred (2 : 1), rice + peanut (2:1), rice + peanut (4 : 1), rice + blackgram (2:1), rice + blackgram (4:1) and rice + blackgram deferred (2:1). Sole crop of rice always recorded higher number of effective tillers/m2, however, it was observed that legumes had an influence on the number of filled grains per panicle and thousand grain weight of rice in rice + legume combinations. Among legumes, pure crops of soybean and peanut always gave rise to increased number of yield components than the other crops grown in association with rice. In case of mungbean, number of pods per plant and thousand seed weight was higher in pure crops though number of seeds per pod was more with rice + mungbean combination. Deferred sown blackgram in association with rice yielded greater number of seeds per pod and thousand seed weight though sole crop of blackgram significantly produced higher number of pods per plant.