Uso do produto Humix® na formação de mudas de Alface (Lactuca sativa)

Abstract

Lettuce is the most consumed leafy vegetable in Brazil, it is a very demanding plant. One of the challenges for growers is to offer a quality product where lettuce needs to be nutritious and free of toxins or agrochemical residues. The predominant factor in this type of production is the increase in fertilization efficiency and the associations between mineral sources of nutrients with one or more sources of organic matter, the so-called organomineral fertilizers. Humic substances directly and indirectly influence plant development. This study aimed to evaluate the concentrations of Humix® (Biostimulant) in the growth and development of lettuce seedlings. The work was carried out in a greenhouse at the Federal University of Tocantins (UFT), Gurupi-TO, using a completely randomized experimental design, in a 1x5 factorial scheme. obtaining twenty installments. The proportion of concentrations between treatments was zero (water), one (2%), two (4%), three (6%) and four (8%) Humix® organic product. For seedling production, a 200-cell polyethylene tray was used. Leaf area index (IAF), shoot length (CPA), root length (CR), neck diameter (DC), shoot dry mass (MSPA), root dry mass (MSR) were evaluated. and quality development index (IQD). The Humix® compound presented a good alternative for lettuce seedling (Lactuca sativa) formation. The best dose of Humix® compound was 4%, which was superior in maintaining the growth and development of the seedlings. There was significant development in all evaluation parameters.