Yield of bunching onion in mono-cropping system and intercropped with roquette with and without soil covering with chicken manure

Abstract

The objectives of this work were to evaluate yield and gross income of ‘Todo Ano’ bunching onion and ‘Cultivada’ roquette under mono-cropping and intercropping system, with (C) and without (S) soil covering with chicken manure (CF). Harvest of roquette was on 81 days after sowing and of bunching onion on 81, 139 and 174 days after planting. Height of bunching onion was influenced by type of cropping in the first harvest and by soil covering in both three harvests. The greatest and the smallest average fresh masses of bunching onion which were obtained in the first (1.55 and 3.58 t ha-1) and in the second (1.31 and 3.07 t ha-1) re-sprouting were superior in 355.88% and 285.29% and in 203.39% and 160.17%, respectively, than the smallest (0.34 t ha-1) and the greatest yield (1.18 t ha-1) of the first harvest. The highest height (24.59 cm) and the greatest fresh mass (11.40 t ha-1) of roquette plants were from mono-cropping system with CF soil covering. Relating Land Equivalent Ratios-LER (1.29 and 1.71) with gross income (R$ 34,695.95 and 16,251.10) which were obtained from soils CCF and SCF, respectively, it was observed that the smaller LER induced the best gross income. For bunching onion, the highest yield and gross income were obtained with mono-cropping system in soil CCF and, for Dourados market, the resprouting of plants can be used. For roquette, intercrop system with bunching onion in soil CCF was the best.