Cultivo do tomateiro tipo cereja sob adubação orgânica e mineral irrigado com diferentes volumes de água.

Abstract

Currently, one of the most discussed world problems is the shortage of water that affects various parts of the globe, making it necessary for the rational use of water resources, limiting factor in agricultural production. However, in northeastern Brazil, the water deficit is one of the most important factors affecting the growth and satisfactory crop production. Lately, to mitigate the effects of drought stress, has emphasized, the use of organic inputs in combination with mineral fertilizer. However, studies on these factors, with respect to tomato cherry type are still limited. Therefore, we developed a survey to evaluate morphology and production of cherry tomato under organic and mineral irrigated with different water fertilization. The experiment was conducted in a greenhouse in pots of 20 L, the Federal University of Campina Grande, Campina Grande / PB. The treatments consisted of five levels of replacement irrigation water (70, 85, 100, 115 and 130% of ETo) and three forms of fertilizer (fertilizer with earthworm castings, chemical fertilizer and control without fertilization), factorially combined in a 5 x 5 and arranged in a randomized complete block (5 blocks). Related to growth and fruit production, where data collected were subjected to analysis of variance and the F test for the significant variables, regression analyzes and tests for comparison of means, Tukey's test were conducted variables were evaluated. It was found that increasing the irrigation rate did not affect the height of the tomato plant, however, the fertilization with mineral humus was superior in almost every cycle. The stem diameter suffered increasing linear changes in three different evaluation periods with increased blade, however the organic and mineral fertilization did not differ among themselves. The number of leaves was affected only 36 days after transplanting DAT by increasing the blade, turn the mineral fertilization was higher in the last two periods of evaluation with respect to the number of leaves. Leaf area was reduced with increased blade at 18 DAT when subjected to fertilization with humus, however at 92 DAT additions occurred when chemically fertilized. The biomass plant has benefited from the mineral fertilizer, with the increase of the blades. The control plants had the lowest values in the variables of growth, higher rate of abortion of flowers and produce less fruit. The highest fruit yield was obtained with the higher irrigation rate and when the plants were exposed to mineral fertilization, organic fertilization even having fostered greater vegetative growth up to 60 DAT.