Response of rice and common bean crops in succession to fertilization in "Cerrado" soil

Abstract

Low soil fertility of cerrado of Brazil is one of the most important yield limiting factors in crops production. A field study was carried out for three consecutive years to evaluate response of upland rice (Oryza sativa L.) and common bean (Phaseolus vulgaris L.) to fertilization in a Dark-Red Latosol in succession. The fertility levels were low, medium, high, and medium + green manure. Average dry matter, grain yield, accumulation of nutrients by rice and bean crops and yield components of rice were significantly increased with fertilization. Average maximum grain yield of rice was obtained with medium soil fertility + green manure treatment, whereas, common bean produced average maximum grain yield at high soil fertility level. Rice yield was decreased with continuous crop production in sequences at all fertility levels.