PRODUÇÃO DE ALFACE LISA EM RESPOSTA A APLICAÇÃO DE COMPOSTO MINERAL SILICATADO

Abstract

The objective of this study was to evaluate the effect of the compound silicate Microton® proportions in the lettuce production, Babá Verão cultivar. The experiment was conducted under field conditions at the Instituto Federal de Educação Ciência e Tecnologia Goiano (IF Goiano), Campus Morrinhos – GO, from September to November 2011. The design was a randomized block design, with four replications and 18 plants per plot, arranged in three rows of six plants each, where the 4 centers were considered useful and the other boundary. Treatments (T) consisted of five proportions: T1 - 0.00, T2 - 87.50; T3 - 175.00; T4 - 262.50; T5 - 350.00 kg ha-1

, of silicate mineral compound, corporate manually along the ground with the fertilizer planting at a depth of 15 cm. At 42 days after transplantation were evaluated: total fresh mass (MFT) g plant-1 ,

commercial fresh mass (MFC) g plant-1

, number of leaves damaged (NFE); head diameter (DC); number of commercial leaves (NFC); dry matter total mass of the part air (MSTO). The compost silicate application to the soil in growing lettuce not provided better agronomic performance nutrition in culture. The silicate compound caused beneficial actions, such as reducing damaged leaves, increased fresh weight and consequently higher crop yields.