Banca de DEFESA: ROBERTHI ALEF COSTA TEIXEIRA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : ROBERTHI ALEF COSTA TEIXEIRA
DATE: 14/10/2021
TIME: 08:30
LOCAL: Sala Virtual no Google Meet (meet.google.com/emu-moas-zsh)
TITLE:
DYNAMICS OF TRIAL PLANTATIONS OF Tachigali vulgaris LF Gomes da Silva & H.C. Lima IN RESPONSE TO FERTILIZATION AND SOIL TEXTURE
KEY WORDS:
Energy forest. Charcoal tree. Silvicultural treatment. Nutrition.
PAGES: 79
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Manejo Florestal
SPECIALTY: Dendrometria e Inventário Florestal
SUMMARY:
The diversification of species for bioenergy forests in the Amazon will help several local and/or regional industrial segments. Soon, the expansion of knowledge of silvicultural practices of Tachigali vulgaris will subsidize future plantations on a commercial scale. The objective of this research was to verify the effect of different levels of fertilization, soil texture, and age on the development of the Tachigali vulgaris species to compose energetic forests. The study was conducted in two experimental areas of 1.6 ha each, belonging to the company Jari Celulose S.A. in Monte Dourado district of the municipality of Almeirim – Pará. Independent analyzes were performed, in both experimental areas and ages. The experiments were implemented in a randomized block design in a factorial scheme, with four blocks, whose treatments are 4 levels of Phosphorus and 3 levels of Potassium combined with each other, totaling 12 treatments. The variables diameter at breast height (DAP), equivalent diameter (DAPeq), total height (Ht), percentage of single bole (Fu), total volume per hectare (Vt ha-1) and survival (Sobr.) were evaluated. For soil with a sandy texture, ANOVA revealed a significant effect for variable DAP and Fu, and no significant effect for DAPeq, Ht, Vt ha-1 and Sobr.. Mean Vt ha-1 of 21.28 m3 ha-1 was observed (CV%=18.95); 81.78 m3 ha-1 (CV%=20.11); 107.57 m3 ha-1 (CV%=21.28); 121.85 m3 ha-1 (CV%=20.63); 171.02 m3 ha-1 (CV%=27.47); 216.68 m3 ha-1 (CV%=29.59) and 254.06 m3 ha-1 (CV%=30.06) at 2, 4, 5, 6, 8, 9 and 10 years of age, respectively . For the clayey textured soil, there was a significant effect of planting fertilization on the variable Vt ha-1 and Sobr., with average volumes of 25.96 m3 ha-1 (CV%=25.46); 85.07 m3 ha-1 (CV%=18.18); 113.57 m3 ha-1 (CV%=19.65); 132.01 m3 ha-1 (CV%=22.80); 197.23 m3 ha-1 (CV%=28.36); 243.21 m3 ha-1 (CV%=32.10) and 257.79 m3 ha-1 (CV%=35.68) at 2, 4, 5, 6, 8, 9 and 10 years of age, respectively. The results indicate that Tachigali vulgaris was not very demanding on nutrients and, under the conditions of this study, a nutritional dose of 0 kg ha-1 of triplo superphosphate and 172 kg ha-1 of potassium chloride is recommended in an area with textured yellow oxisol. sandy medium and 195 kg ha-1 of triplo superphosphate and 343 kg ha-1 of potassium chloride in an area with yellow latosol of medium clayey texture.
BANKING MEMBERS:
Presidente - 1134991 - THIAGO DE PAULA PROTASIO
Externo ao Programa - 2404135 - LEO JAKSON DA SILVA MOREIRA
Externo à Instituição - ARYSTIDES RESENDE SILVA - EMBRAPA
Externo à Instituição - RODRIGO OTÁVIO VEIGA DE MIRANDA - UFU