Viabilidade agroeconômica da hortelã (Mentha piperita L.) em dois cultivos sob doses de jitirana e épocas de colheita.

Abstract

The plant consortium presents itself as one of the most appropriate methods to the practice of horticulture, in agroecological molds with numerous advantages in the environmental aspect, productive and economical. Two experiments were conducted at the Experimental Farm Rafael Fernandes in Alagoinha district, a rural area of Mossoró- RN, in order to assess the agricultural economic viability of mint consortium with coriander fertilized with manure jitirana more beef. The first experiment was conducted in the period from 08.11.2015 to 11.05.2015 and the second experiment in the period from 11.27.2015 to 22.03.2016, in a randomized complete block with treatments arranged in a 2x4 factorial design with three replications. The first factor consisted of monocropping and intercropping mint and coriander, and the second factor was the different doses of jitirana mixed with manure (0.0, 1.0, 2.0 and 3.0 kg m- 2 site). For mint culture was used to cultivate "Mentha piperita". For the coriander was used to cultivate "Verdão". The characteristics evaluated for the Mint culture were as follows: height of biomass, fresh weight, number of sauces, dry mass, oil content and yield. For the coriander crop the following characteristics were evaluated: plant height, number of stems plant-1, productivity, number of sauces and dry mass. Also economic indicators were used, such as land equivalent ratio (LER), cost of production, gross income, net income, rate of return and profitability index. The use of more manure jitirana cattle contributed to the increase of the productive characteristics of the consortium in the two growing seasons, with number of mint sauces 17.6 and 5.8 in 3.0 doses and 2.2 kg m-2 respectively. For coriander crop, the values were 16.5 and 15.3 m2 sauces in 3.0 kg dose m-2, respectively. The equivalent area obtained in the two experiments were 1.72 and 1.78, respectively. The greater economic efficiency of the consortium was observed in the first growing season with the application of 3.0 kg m-2 of more manure jitirana cattle in an area of 100 m2, with gross income of R $ 3,761.00; net income of R $ 2,727.50; return rate of R $ 3.64 and 72.52% profitability index.