Abstract
ABSTRACT Intercropping is a production system that can reduce the production cost and increase the profitability of vegetable producers, since it permits more efficient land and agricultural inputs use. In order to evaluate the effect of lettuce plant density on the economic feasibility of lettuce-rocket intercropping system over two growing seasons (winter and summer), two experiments were conducted in the field at São Paulo State University “Júlio de Mesquita Filho” (UNESP), Jaboticabal, São Paulo, Brazil. The treatments consisted of five lettuce-rocket intercrops with spacing between lettuce rows of: 0.20; 0.25; 0.30; 0.35 and 0.40 m, five sole crop of lettuce in the same spacing between rows adopted in the intercropping system, and a sole cropping of rocket with spacing between rows of 0.20 m. The statistical design adopted was the complete randomized block with four replicates. During winter, higher profitability was achieved with the highest population density. Highest profitability of the crops in both seasons was obtained in summer.
Highlights
The high demand and requirements of national and international markets for high quality products grown in a sustainable way, has made the vegetable growers seek the adoption of new production technologies without losing sight of the economic feasibility (ZANG et al, 2015)
For proper analysis of the efficiency of this system, evaluation of the economic feasibility of intercropping in relation to sole cropping is necessary, besides the quantitative evaluation, considering the quality of the vegetables produced and the variations in the production costs and in the sale price which vary according to the production seasonality (REZENDE et al, 2009; CECÍLIO FILHO et al, 2015)
The profitability obtained in the intercropping system will not always validate the yield advantage observed in the intercropping in relation to the sole cropping system (REZENDE et al, 2009)
Summary
The high demand and requirements of national and international markets for high quality products grown in a sustainable way, has made the vegetable growers seek the adoption of new production technologies without losing sight of the economic feasibility (ZANG et al, 2015). Fertilization was the same in the intercropping calculated as follows: and sole cropping of lettuce and rocket, according to a) Cost of labor the soil analysis and recommendation of Trani, The monthly salary of the common laborer
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