EFEITO DO ESTERCO BOVINO NO TEOR E ACÚMULO DE MACRONUTRIENTES EM FOLHAS DE Corymbia citriodora

Abstract

This study evaluated in the greenhouse, the effects of application of cattle manure doses associated with liming at seedling in field transplanting age produced by seeds collected from four Corymbia citriodora matrices trees. Were used 80 pots with 5 dm3 of a high-acidity Oxisol. Were used having 5 cattle manure doses (0, 10, 20, 30, and 40 Mg ha-1) that mass is equivalent to 0, 25, 50, 75, and 100 g per pot. The experimental design was completely randomized, in a 5 x 4 factorial (five doses of manure and seeds of trees four arrays) scheme with four replications. The dose of lime was calculated to raise the base saturation to 50%. We evaluated the fertility of the soil after 30 days incubation with manure and limestone. The seeds were sown in plastic tubes (50 cm3) and the seedlings were planted about 17 cm. Each plot represented a pot containing two plants. At 90 days the levels were evaluated and accumulation of nutrients in plant leaves. It was observed that there are differences between plants from different matrices, in content and accumulation of macronutrients. Those with better development of the plants were coming 8 and 29. The amount of manure that enhanced growth of plants was close to 30 t ha-1 (75 g per pot), which represents a large amount is applied to a large production, but for small producers, this dose is recommended.