Efeito residual da jitirana, flor-de-seda e mata-pasto no cultivo da rúcula em sucessão a beterraba Residual effect of scarlet starglory, roostertree and Senna obtusifolia in the cultivation of rocket in succession sugar beet

The residual effect of previous fertilization in subsequent crops is extremely important, since soil fertilization in such an intense activity, such as horticulture, increase the cost of production when it was implemented a new culture. This work was conducted at the Fazenda Experimental Rafael Fernandes, located in Alagoinha district, rural Mossoro-RN, in the period from november to december 2011. The objective was to evaluate the Residual effect of scarlet starglory, roostertree and Senna obtusifolia in the cultivation of rocket in succession sugar beet.The sugar beet was planted in 1.2 x 1.2 plots fertilized with me wild species, quantities: 0.6; 1.2; 1.8; 2.4 and 3.0 kg m -2 site. After the withdrawal of beetroot, seeded rocket seeds in installments related to the above mentioned treatments. The experimental design was a randomized block with three replications, in a factorial 5 x 3, five quantities and three types of green manure (scarlet starglory; roostertree and Senna obtusifolia). The cultivar planted rocket was the cultivated. The characteristics evaluated were height and number of leaves per plant, fresh, arugula sauce number and dry matter. There was interaction of the factors studied for fresh pasta and arugula number of sauces. The residual effect on the amount of 3.0 kg m-2 site contributed to the fresh weight of the order arugula 762; 684 and 713 g m-2 site, equivalent to 6.0; 5.0 and 5.0 arugula dressings scarlet starglory, roostertree and Senna obtusifolia, respectively. Scarlet starglory, roostertree and Senna obtusifolia are promising species to be used as green manure in vegetable production.