Agro-economic viability from two croppings of broadleaf vegetables intercropped with beet fertilized with roostertree in different population densities

Abstract

The objective of this study was to evaluate the sustainability and agro-economic viability from two croppings of coriander (C) and two of arugula (A) intercropped with beet (B) as a function of roostertree additions to the soil in different population densities. The experimental design was a randomized complete block, with treatments arranged in a 4 x 4 factorial scheme with four replications. The treatments resulted from the combination of four amounts of roostertree biomass (6, 19, 32 and 45 t ha(-1) on dry basis) with four population densities of coriander, beet and arugula (20(C)-50(B)-20(A)%, 30(C)-50(B)-30(A)%, 40(C)-50(B)-40(A)% and 50(C)-50(B)-50(A)% of the recommended densities in their single crops). The maximum agronomic efficiency of the polyculture of coriander, beet and arugula was obtained with the density of 40(C)-50(B)-40(A) and the amount of 19 t ha(-1) roostertree biomass incorporated into the soil. The highest profitability of the polyculture was obtained with the density of 20(C)-50(B)-20(A) (%) and the amount of 45 t ha(-1) of this green manure. High agro-economic efficiency can be obtained by cultivating the polyculture of coriander, beet and arugula when well-manageding the factors of production, fertilization with roostertree and population densities.