Effect of fertilizer and pre-monsoon crops on productivity of rice (Oryza sativa)-cropping based systems

Abstract

A field experiment involving wheat (Triticum aestivum L. emend. Fiori & Paol.)-mungbean (Phaseolus radiatus L.) and maize (Zea mays L.)-rice (Oryza sativa L.) sequences (with varying mungbean residue management and fertilizer doses as treatments) was conducted under irrigated conditions at Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, during 1996-99. Seed yield of mungbean was very low (0.25-0.61 tonne/ha) due to heavy pre-monosoon rainfall at maturity but considerable amount of green biomass (2.57-9.08 tonnes/ ha) was obtained. Maize yield of 1.93-3.25 tonnes/ha was also affected by rainfall. Rice yield was 3.83-4.62 tonnes/ha, whereas wheat yield of 1.98-4.08 tonnes/ha in..