Produção de alface em duas épocas de cultivo adubada com esterco ovino em diferentes espaçamentos.

Abstract

This study aimed to evaluate the development of lettuce in relation to different planting dates, row spacing and dlfferent application rates of manure application in sheep . The experiments were conducted in the experimental área of the Ciências e Tecnologia Agroalimentar, Universidade Federal de Campina Grande, Campus Pombal, PB. Lettuce seeds of 'Verá' were used. the seedlings were transplanted when they had 2-3 true leaves . The treatments were: two cropping seasons , three spacings (0.20 x 0.20 , 0.20 x 0.25 , 0.25 x 0.25 m ) and four sheep manure rates ( 0, 20, 40 and 60 t ha - 1 ) resulting in a factorial 2 x 3 x 4 . The experimental design was adopted in randomized block design with four replications. The área was prepared mechanically plowing and removal of the beds, the clearings were made manually, irrigation was performed by micro sprinkler, the phytosanitary treatments were performed according to need, the crop was harvested each season at 30 days after transplanting. Shoot height, head diameter, number of leaves , short fresh weight , root fresh weight, total fresh weight, dry weight of short , root dry mass, total dry matter and soir analysis: We analyzed. The second time, the spacing of 0.25 x 0.25 m. and the dose of 60 t ha' l showed higher development and production of lettuce Verá.