Produtividade agroeconômica da mandioquinha-salsa cultivada solteira e consorciada com três cultivares de alface

Abstract

The experiment was conducted in the Garden of Medicinal Plants, Federal University of Grande Dourados - UFGD in Dourados in the period April to December 2012. The objective of this study was to evaluate the agricultural economic productivity of plants arracacha Yellow Carandaí of' single plants grown and intercropped with three lettuce cultivars. The treatments were: single cultivation of Peruvian carrot, lettuce 'American', lettuce' Luisa' and lettuce 'Red' and intercropping of Peruvian carrot + lettuce American, Peruvian carrot + lettuce 'Luisa' and arracacha + lettuce 'Red', arranged in a randomized block experimental design with five replications. The harvest of lettuce plants was performed at 84 days after sowing - DAS and the plants arracacha at 210 days after planting - DAP. Fresh weight and number of marketable heads were higher in lettuce plants 'American,' with increases of 8.23 t ha-1 and 24.640 heads ha-1, respectively, compared to plants of the cultivar 'Red', showed lower values. The greatest length of head noncommercial lettuce was obtained by the cultivar 'Red', an increase of 1.71 cm in relation to 'Luisa'. Plants arracacha grown intercropped with lettuce plants produced 12.49 t ha-1 fresh weight and 2.33 t ha-1 dry weight of marketable roots, which are greater in 7.97 t ha-1 and 1.45 t ha-1, respectively, the yields obtained with the monocrop. Comparing the sums of net income, it was observed that the cultivation of plants arracacha intercropped with lettuce 'American' was what led to the highest total net income, with increases of R$ 127.260,41 and R$ 102.662,27, in relation to the lowest and highest net incomes obtained from plants cultivated cassava mixed and single with American lettuce plants. In conditions that developed the experiment it was concluded that the producer arracacha can opt for the intercropping of plants arracacha with lettuce, especially the American cultivar, the producer can choose the single lettuce plant cultivation lettuce 'American' or Luisa. To achieve higher net income, producers of Peruvian carrot and lettuce can opt for, intercropping of plants of both species, especially plants arracacha with lettuce 'American'.