Resina vegetal como estratégia de cultivo sob déficit hídrico

Abstract

In view of the need to improve the performance of crops in regions with water adversities, the paineira resin Ceiba speciosa appears as a water conditioner in the soil, acting as a water reserve for plants, making it available in times of water deficit, and improving their development and productivity. In this way, the efficiency of the use of resin in the retention and availability of water for the development of cultures when subjected to water deficit was evaluated with the study. Five different doses of paineira resin were evaluated (0; 0,67; 1,33; 2 and 2,67 g plant-1 ), allowing to analyze the efficiency of the product according to the water tension in the soil (15, 30, 45, 60, 75 kPa) for cotton plant and crop evapotranspiration (40, 60, 80, 100, 120%) for the radish in the greenhouse. Under the conditions evaluated, the vegetable resin provided greater height, diameter, number of leaves and water use efficiency (WUS), even in conditions of water deficit in cotton and radish crops.