Diferentes fontes de fertilizantes utilizados na cultura do milho

Abstract

With the modernization of agriculture and the erosion due to the intensive use of the soil, it is of great importance to conscientise growers of the need to improve the quality of the soils, with the aim of a more sustainable production. The experiment was conducted in the interior of the municipality of Jacutinga, in the community of Linha Barrinha, located in the region of Alto Uruguai, subregion of Erechim. The treatments had the following compositions: T1 = control; T2 = basalt powder; T3 = mineral fertilizer; T4: cattle manure; T5 = basalt powder + urea + manure; T6 = mineral fertilizer + urea + manure; T7 = mineral fertilizer + basalt powder + urea. Harvesting was done manually, each plot was harvested separately, two central lines of the plot were collected excluding two lateral lines and one meter from the beginning and end of the line harvested as border effect. After harvest, the number of grains per ear was estimated, and each plot weighed separately. The threshed seeds were taken to the laboratory, where the humidity of the beans and the weight of a thousand seeds were evaluated. It was concluded that there was no effect of only the basalt powder nor of basalt powder mixed with manure on the yield of the cultivated soil after two years of the treatments. Based on these results, we considered it necessary to carry o ut more evaluations through further cultivation in the same area, with the same crops, to evaluate residual effects over a longer period, as well as considering the hypothesis of altering the amounts of fertilizers used.