Tensão crítica de água no solo no desenvolvimento vegetativo da cultura de berinjela (Solanum melongena L.)

Abstract

Eggplant, as well as tomatoes, peppers and a potato belonging to the Solanaceae family. A fruit vegetable that has been reaching space at the consumer's table, for presenting nutraceutical properties, high levels of mineral salts, vitamins and fibers. With this, the objective of this work was to determine the critical tension of water in the soil that most results in a better vegetative development in the culture, because the adequate management of irrigation, which involves the decision of when and how much to irrigate, aims to maximize the efficiency water use, minimizing energy consumption and maintaining favorable conditions such as soil moisture and plant health. The experiment was carried out in a greenhouse and was located at Farm School of Igarapé-Açu - FEIGA. The climate of the municipality of Igarapé-açu fits is not the Ami type of the Köppen classification. The experimental design was carried out in randomized blocks, where the treatments consisted of 5 levels of critical water tensions in the soil (20, 30, 40, 50 and 60 kPa) with 3 repetitions. Critical water stresses are not applied to advanced eggplant culture in the morphological analysis of variables such as plant height (ALT), stem diameter (DC), leaf area (AF), number of leaves (NFO), mass shoot weight (MFPA), shoot weight (MSPA) and leaf area index (IAF) at 75 days after transplanting (DAT) in eggplant plants. The critical tension of 20 kPa showed the best results for the vegetative development for such a culture.