Desenvolvimento inicial do milho (DKB 360) em substrato contendo resíduo de frigorífico compostado

Abstract

This study aimed to evaluate the initial development of corn with organic fertilizer using composted residues from the slaughter of cattle in composted slaughterhouses. Blood and rumen contents were the main by-products used in the composting that was responsible for fertilizing corn. Furthermore, the sludge resulting from the effluent treatment plants of these slaughterhouses will be reused and transformed into an organic compound with fertilizing properties. The application of the organic compound that was used to fertilize the corn was carried out in different dosages for each treatment, being divided into T1, T2 and T3, in order to compare with commercial fertilization. Treatment T1 was carried out with a dosage twice as high as recommended (21.24 g), treatment T2 was carried out with half the recommended dosage (5.31 g), T3 with the recommended dosage (10.62 g) and T0 was made with commercial fertilizer, applying 0.319 grams. The experiment was conducted in a controlled environment, where different amounts of the recommended treatment were applied to determine the most appropriate dosage for field use compared to commercial fertilizer. It was possible to observe that the use of composted fertilizer favored the growth of corn plants in both root and aerial development. There was also a notable growth in leaf area, as well as in chlorophyll concentration, highlighting the best results obtained with a dosage twice as high as recommended.