Utilização de água residuária na irrigação da aveia preta

Abstract

Oats have been gaining space as a winter forage, it is also used as a green manure, helping to protect the soil, in addition to being an important alternative in crop rotation. It has satisfactory resistance to water deficit, responds favorably to liming and soil fertilization, providing greater mass yield. The use of wastewater is a great solution to the environmental issue, it helps to reduce the use of drinking water and chemical fertilizers, since many of these waters contain a greater amount of macro and micronutrients. Fertirrigation with swine wastewater increases agricultural productivity and also reduces fertilizer costs. This study aimed to evaluate the viability of using swine wastewater in the production of black oat dry matter, grown in a greenhouse, under different irrigation shifts. The experiment was implemented in the greenhouse of the experimental area of the Agricultural Engineering course at the Federal University of Pampa – Campus Alegrete/RS. The experimental design was completely randomized, bifactorial, 4 irrigation depths X 3 irrigation shifts, with 4 replications, totaling 48 experimental units. For the treatments (irrigation blades): T1 – Water, 100%; T2- Pig farming effluent, 50%; T3- Effluent from swine farming, 100% and T4- Effluent from swine farming, 200% and 3 irrigation shifts (2, 4 and 7 days). Through the results it was observed that the irrigation blades with 100 and 200% of effluent concentration, provided good yields to the plant. The Etc throughout the crop cycle was 283.18 mm. The best watering shift found was 2 days. Therefore, the use of swine effluent in black oat irrigation supplies the nutritional needs of the plant.