Green manuring with Calotropis procera for the production of coriander in two growing seasons

Abstract

The use of spontaneous species of the Caatinga biome can contribute significantly to the nutritional demand of vegetable crops, thereby providing an agroecological and sustainable form of production. The objective of this research was to determine the effects of different biomasses of Calotropis procera (rooster tree) and times of incorporation into the soil of green manure during two growing seasons on the agronomic performance of coriander cv. Verdão produced in Serra Talhada, a semi-arid region of Pernambuco, Brazil. The experimental design was randomized blocks with three replications. The treatments were arranged in a 4 x 4 factorial scheme, with the first factor consisting of biomass amounts of C. procera (5.4, 8.8, 12.2 and 15.6 t ha -1 on a dry basis) and the second by the incorporation times into the soil (0, 10, 20 and 30 days before coriander planting). The evaluated characteristics were plant height, number of stems per plant, yield of green mass and dry mass of shoot. The best productive performance of coriander was observed in amounts of 12.2 (spring) and 8.8 (autumn-winter) t ha -1 C. procera added to the soil, with an ideal incorporation time of 13 (spring) and 23 (autumn-winter) days before sowing of the crop and with larger accumulations of green and dry mass of the shoot being obtained in autumn-winter.Index terms: Coriandrum sativum L.; organic cultivation; rooster tree. RESUMOO uso de espécies espontâneas do bioma Caatinga pode contribuir de forma significativa no suprimento nutricional demandado pelas hortaliças, sendo uma forma agroecológica e sustentável de produção. O objetivo da pesquisa foi determinar os efeitos de quantidades de biomassa de Calotropis procera (flor-de-seda), de tempos de incorporação ao solo do adubo verde e de duas épocas de cultivo sobre o desempenho agronômico do coentro cv. Verdão produzido em Serra Talhada, semiárido de Pernambuco, Brasil. O delineamento experimental foi em blocos casualizados, com três repetições. Os tratamentos foram arranjados em esquema fatorial 4 x 4, com o primeiro fator constituído por quantidades de biomassa de C. procera (5,4; 8,8; 12,2 e 15,6 t ha -1 em base seca), e o segundo pelos tempos de incorporação ao solo (0, 10, 20 e 30 dias antes do plantio do coentro). As características avaliadas foram altura de plantas, número de hastes por planta, rendimento de massa verde e massa seca da parte aérea. O melhor desempenho produtivo do coentro foi observado nas quantidades 12,2 (primavera) e 8,8 (outono-inverno) t ha -1 de C. procera adicionada ao solo, com um tempo ideal de incorporação de 13 (primavera) e 23 (outono-inverno) dias antes da semeadura da cultura e com maiores acúmulos de massas verde e seca da parte aérea sendo obtidos no outono-inverno.Termos para indexação: Coriandrum sativum L.; cultivo orgânico; flor-de-seda.

"Agronomic and Ecosystem Services Potentialities of Green Manure Utilization"

“…Reducing-cost-technology (RCT) consisted of the soil nontillage and decreasing nitrogen over-fertilizing doses with green manures before crop patterns. Those plants have high potential for restoration of soil fertility and enhancement of terrestrial crop production [34] and provided best profits compared with the other plants (Whitmore A. P. et al, 2000) [35], also contributed significantly to the nutritional demand of green manure legumes, thereby providing an agro-ecological and sustainable production [36]. The grazing of green manure, especially oat (Avena sativa), pea/oat (A. Sativa/Pisum sativum) contributed to improving the available nitrogen production in integrated crop-livestock systems [37].…”

“…Pieters A, J., 1927). In the study conducted by Zandvakili showed that the roots had higher concentrations of nourishments than shoots [36,48]. found that the use of native species of the Caatinga Biome could affect the nutritional demand of the Market of Garden Crops significantly, thus providing a form of agro-ecological and sustainable production.…”