Efeito da aplicação em cobertura da jitirana misturada à flor-de-seda sobre as características agronômicas de cultivares e coentro.

Abstract

Coriander is a horticultural crops species consumed in all regions of Brazil, especially in the Northeast region, where, generally, is produced by family farmers. The use of chemical inputs in the production of vegetables is a practice costly hardwoods, it has abandoned the activity for family farmers, the green manure has presented itself as a strategy for this issue, however, the effectiveness of this practice is subject to the proper choice of the fertilizer, as well as the determination of sufficient quantities to nutrition of culture. In this context, the research aimed to evaluate the use of jitirana and silk flower on agronomic characteristics of cultivars of coriander. The experiment was conducted at the Experimental Farm Rafael Fernandes, located in the District of Alagoinha, a rural area of Mossoró-RN in the Federal University of Rural from Semi-Arid - Mossoró-RN. The delineation used was entirely randomized blocks, with treatments arranged in factorial scheme 4 x 3 + 3 with 3 replications. The treatments consisted of four doses of the chaff of jitirana mixed with silk flower, applied in coverage (6.0 12.0 and 24.0 18.0; t ha-1 on dry basis) and three cultivars of coriander (Verdão, Super verdão and Tabocas) plus three additional treatments (absence of fertilization in cultivars of coriander). It was assessed: plant height (cm plant-1), number of stems per plant, productivity and coriander dry mass (kg ha-1 and m-2 of construction site). Interaction was observed between the studied factors for productivity and dry mass of coriander. The chaff of jitirana with silk flower in coverage in the amount of 24.0 t ha-1, has given 3341 income; 3283 and 2880 kg ha-1, for the Verdão cultivars; Super Verdão and Tabocas, respectively. The spontaneous species (jitirana with silk flower) are promising for use as green manure.