Potencial produtivo do capim Mombaça fertilizado com diferentes doses de nitrogênio - ano II

Abstract

Pastures have an important role in the Brazilian scene in the production of meat and milk, among which stands out the grass Mombasa, which is characterized by its great productive potential. The aim of this study was to characterize the Mombasa grass productivity in Paranaense Southwest fertilized with different doses of nitrogen throughout the growing cycle. We used the design in blocks with 4 levels of nitrogen (N), 0, 120, 240, 360 kg / ha / year with three repetitions each. The nitrogen source used was a 45% urea. They were made five cuts with a mean interval of 44 days between cuts. Nitrogen fertilization was parceled after each cut, except for the last sentence. A positive interference of N in all morphological components of the plant. The average production for MS 0 dose was equal to 4795 kg / ha / year and a dose of 360 kg of N equal to 17,801 kg / ha / year. The DM yield of above 0.3 meters’ leaves was 3,827, 7,977, 11,304, 14,305 kg / ha / year for doses 0, 120, 240, 360 kg N / ha, respectively. The average intake time was 82 cm. According to the climatic variables, it was observed that the higher productivity is found in the summer period and the lowest production in the spring period.