Avaliação de combinações de cultivares de coentro e rúcula em bicultivo consorciadas com cultivares de cenoura

Abstract

The intercropping system has constituted one of the main alternative techniques that contribute to improve the sustainability and crops yields, especially when it associates crops, that to use environmental resources, promotes greater ecological balance of the ecosystem. Therefore, the objective of this study was to evaluate combinations of coriander and salad rocket cultivars in bicropping intercropped with carrot cultivars in strips under the conditions of Mossoró- RN. The experiment was conducted at the Experimental Farm Rafael Fernandes, in the period from July to December 2014. The experimental design was a randomized complete block with four replications, and the treatments arranged in a 2x2x2 factorial. The treatments consisted of the combination of two coriander cultivars (Verdão and Português), two cultivars of rocket (Cultivada and FolhaLarga) and two carrot cultivars (Brasília and Esplanada). The characteristics evaluated in the coriander and rockets were: plant height, number of stems or leaves per plant, green mass yield and shoot dry mass. In the carrot was evaluated: plant height, number of stems per plant, shoot fresh and dry mass, root dry mass, commercial productivity of roots, total productivity of roots and classified productivity of roots. In the intercropping systems were evaluated: land equivalent ratio, productive efficiency index, score of the canonical variable, besides the indicators of economic efficiency: gross income, net income, rate of return, profit margin and modified monetary advantage. The best agroeconomic efficiency of the polyculture was achieved in the combination of the coriander cultivar 'Verdão', rocket cultivar 'FolhaLarga' and carrot cultivar 'Esplanada'. Regardless of the combinations tested cultivars, the production agrosystem of coriander and salad rocket in bicropping intercropped with carrot was the most efficient of fhatfrom the single crops of these vegetables