Cultivo do quiabeiro sob manejo orgânico no período de outono-inverno, nas condições edafoclimáticas da baixada fluminense

Abstract

This work aimed to study an organic production system of okra, grown during autumn-winter period, at the conditions of Fluminense Lowland. It was evaluated the effect of leaf spraying with liquid biofertilizer, obtained by fermented compost extract, and of dressing organic fertilization, in order to increase income for farmers of the region. The treatment were: okra (cv. Santa Cruz 47) sprayed or not with liquid biofertilizer, subjected to two doses of organic fertilization with castor cake (equivalent to 100 and 200 Kg of N-total ha-l), which were applied monthly or bimonthly, and started at 30 days after sowing. Okra was sown at double rows, with a spacing of 0.80 m inside the double row and 1.60 m between the double rows. Fruits were harvested with the size of 10 to 14 cm, according to the preference of national market. There were evaluated weight and number of produced fruits, as well as the yield estimated by the results of dry weight of fruits. Cv. Santa Cruz 47 is adapted to organic management, with mean yield of 16 Mg.ha-1. There were not detected significant differences among the evaluated treatments. This result indicates that the utilization of biofertilizer and the dressing fertilization applied monthly, in relation to bimonthly application, did not promote benefits to okra, according to the evaluated parameters. Considering edaphoclimatic conditions, the organic cultivation of okra in the autumn-winter period is viable, showing possibility to increase the income for farmers of the region.