Abstract

OLIVEIRA, Kássya J. B. de et al. Nutritional and microbiological soil properties influenced by the green manure. Rev. de Ciências Agrárias [online]. 2017, vol.40, n.1, pp.23-33. ISSN 0871-018X.  https://doi.org/10.19084/RCA16010.

The objective of this study was to evaluate the microbiological and chemical soil properties, in intercropping of beet and arugula, in function of the four quantities of roostertree (Calotropis procera) incorporated into the soil and of spatial arrangements. The experimental design was in randomized complete blocks with five replications, with the treatments arranged in a 4x3 factorial scheme. The treatments consisted in combinations of four amounts of roostertree incorporated into the soil (10, 25, 40 and 55 t ha-¹ of dry matter) and three spatial arrangements (2:2, 3:3 and 4:4). The planted cultivars were of beet ‘Early Wonder’ and of rocket were ‘Cultivada’. The characteristics evaluated in the soil were the contents of N, P, K, pH, CEC, organic matter (O.M.), bacteria and fungi present in soil before sowing and after the crop harvest. The best microbiological and nutritional performance of the soil was registered in the second times and in the amount of 55 t ha^-¹. The spatial arrangements do not influence the nutritional and microbiological characteristics of the soil. The total number of fungi and bacteria in the soil increased with increasing amounts of the roostertree incorporated into the soil.

Keywords : Beta vulgaris; Calotropis procera; Eruca sativa; Intercropping system; organic fertilization.

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