Aduba？？o do piment？o em solo organico álico do Vale do Ribeira (SP)

a trial was carried out at the experimental station of pariquera-a？u, state of s？o paulo, brazil, on an organic soil previously limed, to determine the influence of chemical fertilizers in addition to compost on the yield of pepper cv. agron？mico 10-g. chemical fertilization consisted of 0-0-0, 180-320-240, 360-640-480 and 540-960-720kg/ha of n, p2o5 and k2o. organic fertilization consisted of 20t/ha of compost (basically 90% straw). there was no advantage on the use of organic fertilization alone. chemical fertilization increased yield, number and average weight of fruits. the highest yield of marketable pepper fruits (33.2t/ha) and the best economic returns were obtained at rates of 360-640-480kg/ha of n, p2o5 and k2o.