Avaliação do desenvolvimento da cultura da alface sobre a aplicação de diferentes doses de esterco bovino

Abstract

Organic compounds are fertilizers produced from organic matter, therefore, in addition to providing nutrients for plants, they also improve the chemical, physical and biological conditions of the soil. In order to evaluate the production of lettuce (Lactuca sativa L.) under the influence of different doses of bovine manure (0, 5, 10, 15, 20 ton ha), an experiment was conducted at the Federal University of Pampa - Campus Itaqui , in an area of soil classified as Argilúvico Plintossolo of the institution itself. Sowing was carried out in 72-cell polystyrene trays with a volume of 50 cm³ so that two seeds per cell were allocated on August 24, 2019 and subsequently maintained a plant per cell, in which the isla mimosa and lettuce cultivar was used. commercial substrate (TECNOMAX®). The experimental design used in the field was a completely randomized type with 5 treatments and 4 replications for fertilization in a total area of 20 beds using 200 ton ha¹ of cattle manure. The irrigation was done daily in two shifts in a localized manner starting on the day of sowing until the moment when the plants reached the point of transplantation after 25 days and so on until the harvest. The evaluations of 5 plants per bed were made by determining the following characters: plant heigth (AP), plant diameter (DP), number of leaves (NC), green leaf mass (MVF), stem circumference, (CC) and root length (CR). Lettuce responded positively to organic fertilization, obtaining satisfactory results for all the variables analyzed and making it a good alternative for cultivation.