Nitrogen fertilization associated with the hydroretting gel in the production and growth of the table tomato

Abstract

The tomato (Solanum lycopersicum L.) is the main olive cultivated in Brazil; And the second most important on the world stage. The management of the crop is important for the productivity of the tomato, for this a balanced fertilization and the use of new technologies, such as the use of the hydrogel, a water retention polymer, can propitiate this gain of production. The objective of this work was the study of the association of hydrogel use and the use of nitrogen fertilization in the Santy hybrid table tomato crop. An experiment was conducted at the Goiano Federal Institute - Campus Morrinhos. The plants were conducted vertically using braids as support and maintaining eight bunches per plant. The experimental design was a randomized block design, with four replications. The treatments were divided into two sub-divided plots (with and without hydroretting gel) and four nitrogen fertilizations (0, 180, 360 and 540 kg ha^-1), ten plants per plot with 1.2 meter spacing between rows. Coverage fertilizations were performed at 25; 40; 55; 70; 85; 100 and 115 days after transplanting the seedlings. It was verified that the hydrogel source of variation had significant effect on the diameter of the final stem, green matter and fruit texture. For the nitrogen dose factor, we had results that indicate increases in the following variables: chlorophyll in the basal area, mean and apical of the plant, diameter of the final stem, dry and green matter, number of average fruits, weight per kilogram of average fruits in the area Useful, absolute growth rate for plant height and productivity per hectare.