Dynamics of experimental plantations of Tachigali vulgaris in response to fertilization and soil texture

• Published in: New forests 2024-07, Vol.55 (4), p.713-733
• Main Authors: Teixeira, Roberthi Alef Costa, Lima, Michael Douglas Roque, Silva, Arystides Resende, Gonçalves, Delman de Almeida, Moreira, Leo Jakson da Silva, de Miranda, Rodrigo Otávio Veiga, Dias Junior, Ananias Francisco, Tomazello-Filho, Mario, Soares, Alvaro Augusto Vieira, Protásio, Thiago de Paula
• Format: Article
• Language: English
• Subjects: Amazonia; Area; Bark; bioenergy; Biomedical and Life Sciences; Brazil; Clay soils; Diameters; energy; Fertilization; Forestry; Life Sciences; Loam; Oxisols; phosphorus; Plantations; Potassium; Potassium chloride; Sandy loam; sandy loam soils; Sandy soils; Silvicultural practices; Silviculture; Soil properties; Soil texture; Soil types; species; Tachigali; Texture; Trees; triple superphosphate; Wood; wood volume
• ISSN: 0169-4286; 1573-5095
• DOI: 10.1007/s11056-023-09999-1

The diversification of species for bioenergy silviculture in Amazonia will help several local and/or regional industrial segments. Thus, the expansion of knowledge on silvicultural practices of Tachigali vulgaris will support future commercial-scale plantations in Amazonia. This study aimed to evaluate possible differences in diameter, height, and wood volume of T. vulgaris trees grown under different nutritional doses, on two soil texture classes. In addition, we sought to determine the appropriate nutritional dose for the studied types of soil texture aiming at the production of energy wood. The study was conducted in two experimental areas of 1.6 ha each, located in the municipality of Almeirim – Pará, Brazil. Independent analyses were performed in both experimental areas at each age. The experiments were set up in a randomized block design with four blocks. A factorial scheme considering four phosphorus and three potassium doses were adopted, totaling 12 treatments. The diameter at 1.30 m (DBH), equivalent diameter, total height of the trees, and the commercial wood volume with bark per hectare (V wb ha −1 ) were evaluated. A significant effect of nutrient doses was reported on DBH at the age of 2 years for the soil with a sandy loam texture. The V wb ha −1 of the trees at 4, 5, and 6 years old was significantly affected by fertilization in clayey soils. Under the conditions of the present study, the nutritional doses of 0 kg ha −1 of triple superphosphate and 172 kg ha −1 of potassium chloride are recommended for the area with Oxisol of sandy loam texture and 195 kg ha −1 of triple superphosphate and 343 kg ha −1 of potassium chloride are recommended for the area with Oxisol of clayey texture.