Efeitos da combinação de composto orgânico com biocarvão sobre a produção de biomassa de Brachiaria brizantha e alterações nas características químicas do solo

Abstract

The application of biochar has great potential to increase the levels of nutrients in the soil solution, favoring plant development. However, the isolated use of biochar with characteristics of low nutrient availability can be inefficient, especially in low fertility soils. In this context, the objective of this work will be to quantify the effects of the application of eucalyptus wood biochar and its mixture with organic compost on the biomass production of Brachiaria brizantha cv. Marandu and on soil characteristics. The organic and bio-oxidized compounds treatments with hydrogen per. Organic compost or fresh biochar or oxidized with inorganic acid are not used, but the vessels are not a second mineral experiment. The treatments are: T1 - Control without compost or biochar; T2 - 1% compound weight basis; T3 - 0.75% compound +0.25% fresh biochar; T4 - 0.50% compost + 0.50% fresh biochar; T5 - 0.25% compost + 0.75% fresh biochar; T6 - 1% fresh biochar; T7 - 0.75% compound +0.25% oxidized biochar; T8 - 0.50% compound + 0.50% oxidized biochar; T9 - 0.25% compound + 0.75% oxidized biochar; T10 - 1% oxidized biochar. The experimental design is completely randomized with five replications. For the two experiments, estimates of total dry mass production of Marandu grass in five cuts will be presented. At the end of each test, the characteristics of the soil test will be performed. In general, as different mixtures of biochar with some difference between all variables, no positive effect for any mixture. Therefore, the use of a mixture of equal proportions of compost and biochar allows the benefits of each material.