PRODUCTION OF FERTILIZED LETTUCE WITH ROOSTERTREE IN DIFFERENT AMOUNTS AND INCORPORATION TIMES

Paulo. C. A. Linhares, Aridenia. P. Chaves, Francisco Bezerra Neto, Vericia F. S. Paula, Josimar. N. Silva, Ykesaky T. D. F. Fernandes, Jailma S. S. Lima

Abstract: The objective of this work was to evaluate the production of lettuce manured with roostertree (Calotropis procera) under different amounts and times of its incorporation to the soil. The experimental design was of randomized complete blocks with treatments arranged in a 4 x 4 factorial scheme, with four replications, where the fi rst factor was composed of four quantities of roostertree (5.4, 8.8, 12.2 and 15.6 t ha-1 on a dry basis), and the second factor by the incorporation times (0, 10, 20 and 30 days before lettuce transplanting – BLT). The lettuce cultivar planted was Tainá. The best productive performance of the lettuce was obtained in the amount of 15.6 t ha-1 of roostertree incorporated into the soil, in the time of 0 days before lettuce transplanting. The cultivation of the lettuce is agro-economically viable with the use of roostertree.

Keywords: agricultura orgânica; green manuring; Lactuca sativa; organic agriculture

Date published: 2017-10-18