Mid-rotation fertilization and liming effects on nutrient dynamics of Pinus taeda L. in subtropical Brazil
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REVIEW
Mid‑rotation fertilization and liming effects on nutrient dynamics of Pinus taeda L. in subtropical Brazil Rangel Consalter1 · Julierme Zimmer Barbosa2 · Stephen A. Prior3 · Fabiane Machado Vezzani1 · Marcos Vinícius Martins Bassaco4 · Guilherme Quaresma Pedreira5 · Antônio Carlos Vargas Motta1 Received: 4 February 2020 / Revised: 9 July 2020 / Accepted: 13 July 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Since fertilization and liming are unusual practices for managing Pinus taeda L. in Brazil, nutrient exhaustion can occur in the long term. However, recommendations are limited due to lack of studies investigating plant nutrition and nutrient biocycling. Thus, a study was established to investigate the effects of mid-rotation fertilization and liming on foliar, root, and litter nutrient composition. The use of a nutrient omission technique resulted in seven treatments: full (N, P, K, Ca, Mg, B, Zn, Cu, and Mo), -NPK, -micronutrients, -K, -Zn, -lime, and control. Trees were 5 years old when treatments were applied and 12 years old when harvested. At harvest, needle samples from the first and second flushes were collected. Litter layer samples were also collected and divided into four sublayers; the bottom fractions contained roots that were removed and analyzed separately. Fertilizer and lime application increased concentrations of P, K, Ca, Mg, S, Zn, B, and Al in the first and/or second flushes, reduced Mn, and did not change Cu and Fe. Amendment with K resulted in reduced Ca and Mg. Litter layer concentrations of amended elements (Ca, Mg, Cu, Zn, and P) and S were increased, especially in the bottom most fraction. Large accumulations of Ca, Mg, Cu, and Zn were observed in the litter and roots; smaller in K, P, S, B, and Mn were also noted. Degree of litter decomposition led to increased Fe and Al and decreased Mn. Fertilizer and lime application exerted large influences on Pinus nutrition and litter layer chemical quality. Keywords Conifers · Forest humus · Litter · Fine roots · Nutritional status
Introduction
Communicated by Agustín Merino.
Global concerns regarding soil nutrient exhaustion from successive Pinus ssp. plantings without nutrient replacement have implications for sustainable forest production 1
Department of Soils and Agricultural Engineering, Federal University of Paraná, Funcionários St., 1540, Curitiba, Paraná 80035‑050, Brazil
2
Federal Institute of Southeast Minas Gerais, Monsenhor José Augusto St., 204, Barbacena, Minas Gerais 36205‑018, Brazil
3
Fabiane Machado Vezzani [email protected]
National Soil Dynamics Laboratory, United States Department of Agriculture-Agricultural Research Service, 411 South Donahue Drive, Auburn City, AL 36832, USA
4
Guilherme Quaresma Pedreira [email protected]
Faculdades FATI-FAJAR, Santa Catarina St., 4, Jaguariaíva, Paraná 84200‑000, Brazil
5
Agronomic Trainer - Brazilian Agricultural Research Corporation, Ribeira Rd Km 111 ‑ Bairro Guaraituba, Colombo, Paraná 83411‑00
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