Patrícia Souza de Almeida
AUTHOR: Patrícia Souza de Almeida
TITLE: MINERAL AND ORGANIC FERTILIZATION IN AGROFLORESTAL SYSTEM
ADVISOR: Prof. Dr. Robson Schaff Corrêa, Co-advisor: Prof. Dr. Thelma Shirlen Soares
APPROVAL DATE: 03/26/2019
Abstract:
Aiming to evaluate the growth of Eucalyptus urograndis hybrid clones under different combinations of mineral and organic fertilizer doses in a silvopastoral system, besides the availability of nutrients in the soil and the presence of weeds, was conducted an experiment in Mineiros-Goiás in a randomized block design (RBD) with five treatments and four replications, totalizing the value of 20 plots. It was tested five mineral and organic fertilizer combinations: NPK (140 g plant-1 ) and SFS (105 g m-1 ) with three top-dressing fertilizations; NPK (140 g plant-1 ) and SFS (105 g m-1 ) with a single top-dressing fertilization; turkey manure (4090 g m-1 ) with three topdressing fertilizations; turkey manure (2767 g m-1 ) with three top-dressing fertilizations; and turkey manure (1834 g m-1 ) and SFS (64 g m-1 ) with three top-dressing fertilizations. At 7, 11 and 24 months of growth were evaluated the DBH (diameter at breast height), the average total plant height and total volume. At 12 months old were evaluated weeds and soil fertility. The analysis of variance was performed with the Ftest at 5 %, grouping test (Scott Knott) and linear correlation. The results obtained show that statistically significant difference was observed between the treatments for the variables availability of nutrients in the soil and DBH. The development of weeds did not present statistical difference in relation to applied fertilization. In conclusion, the application of fertilizers interferes with the growth of plants of eucalypts in an agroforestry system.
