ALTERAÇÃO NO PH DE LATOSSOLO FERTIRRIGADO COM EFLUENTE DE LATICÍNIOS

Abstract

Nowadays the dairy industry represents an activity of great importance in the Brazilian and world economy, this branch generates large amount of liquid effluents (wastewater), which in turn generates large pollution in watercourses, have emerged as an alternative to control of surface and groundwater pollution, the use of this effluent in agriculture (fertigation). Thus, the objective of this study was to determine the active acidity (pH) in soil cultivated with mombaça grass and fertigated with different doses of dairy wastewater. Soil samples were collected from the experimental area, in the 0-10, 10 -20, 20-30 and 90-100 cm, the crop used in this experiment was mombaça grass. A randomized statistical design with 5 treatments and 4 replications was used. Data were subjected to analysis of variance and regression. Soil pH variation in relation to depth and time were analyzed. It was concluded with this study that the dairy effluent can be used in fertigation of mombaça grass with application rate of up to 600 kg of sodium, providing higher dry and fresh grass yields without risk of sanitary contamination, and without problems. physical or chemical to the soil, and the crop.