Adubação organomineral em milho segunda safra

Abstract

The increase in areas related to agriculture and the high profitability of soybean has increased the number of soybean crops and intensified the succession of soybeans and corn, this intensification made possible the cultivation of corn in areas with soils with a high degree of weathering, necessitating so larger studies related to soil fertility and fertilization. Given the above, this study aimed to evaluate the development and productivity of maize second crop subjected to this fertilizer doses compared to traditional mineral fertilizer. . The experiment was conducted in a commercial area located in the municipality of Novo Progresso - Pará The statistical design was randomized blocks - DBC, with six treatments, with T0 = control without fertilization; T1, T2, T3, and T4, respectively 100, 200.300 and 400 kg ha -1 of organic-04-14-08 and T5 control = 400 kg ha -1 formulated 04-14-08 of mineral. They were evaluated: plant height (cm), the first ear height (cm), stem diameter (mm), number of kernel rows, number of kernels per row, weight of 100 grains (g) and productivity (kg /ha). We conclude that the fertilization with bio-fertilizer was over fertilization with mineral fertilizer on the morphological characteristics, as for the production of components there were no differences between the fertilization, only productivity, which increased productivity was achieved with 300 kg / ha of organic mineral.