Soil Chemical Attributes, Biometric Characteristics, and Concentrations of N and P in Leaves and Litter Affected by Fertilization and the Number of Sprouts per the Eucalyptus L'Her. Strain in the Brazilian Cerrado

Autor(es)

Godoi, Natasha M. I. ^[1] ; Araujo, Sabrina N. dos S. ^[2] ; Buzetti, Salatier ^[2] ; Gazola, Rodolfo de N. ^[1] ; Celestrino, Thiago de S. ^[1] ; da Silva, Alexandre C. ^[3] ; Nogueira, Thiago A. R. ^[2] ; Teixeira Filho, Marcelo C. M. ^[2]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Postgrad Program Agron, Sch Engn FEIS, BR-15385000 Ilha Solteira, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Dept Plant Protect Rural Engn & Soils, Ilha Solteira Sch Engn FEIS, BR-15385000 Ilha Solteira, SP - Brazil

^[3] Cargill Int SA, Dept Forestry, BR-79610090 Tres Lagoas, MS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FORESTS; v. 9, n. 6 JUN 2018.
• Citações Web of Science: 0

Resumo

Given the lack of recommendations for the fertilization of Eucalyptus clones in the second production cycle, the effects of fertilizer rates and the number of sprouts per strain in terms of the soil chemical attributes, biometric characteristics, and the concentrations of N and P in the leaves and in the litter of Eucalyptus L'Her. in the Brazilian Cerrado were evaluated. The experimental design was a randomized block with four replicates, arranged in a 2 x 4 factorial scheme: one or two sprouts per strain; four fertilizer rates (0, 50, 100, or 200% of 200 kg ha(-1) of the formula 06-30-06 + 1.5% Cu + 1% Zn) applied immediately after sprout definition. The option of one sprout per strain yielded higher contents of organic matter (K, S, B, and Mn) in the 0.20-0.40-m layer, the leaf chlorophyll index, the diameter at breast height, and the height of the Eucalyptus 44 months after the definition of sprouts. However, N and P leaf concentrations and the wood volume did not differ as a function of the sprout numbers. The fertilizer dosage did not influence the wood volume, even in sandy soil with low fertility. Approximately 86% of the wood volume was obtained from the supply of soil and root nutrient reserves and 14% of this productivity is due to fertilization minerals. The adequate fertilization in the first cycle of the Eucalyptus supplies almost the entire nutritional demand of the forest in the second production cycle. (AU)

• Processo FAPESP: 16/11613-1 - Biomassa e acúmulo de nutrientes em brotações de eucalipto cultivado em solo de textura arenosa no Cerrado
• Beneficiário: Natasha Mirella Inhã Godoi
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica