Crescimento da acácia-negra em resposta a aplicação de nitrogênio, fósforo e potássio

Schumacher, Mauro Valdir; Viera, Márcio; Londero, Eduardo Kneipp; Calil, Francine Neves; Lopes, Vicente Guilherme; Witschoreck, Rudi

doi:10.1590/s0104-77602013000100007

Cited by 10 publications

(11 citation statements)

References 9 publications

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“…The treatments followed average doses of fertilizers found in the literature for forest stands such as eucalyptus and black acacia (Costa et al, 2012;Schumacher et al, 2013), which consisted in the use of commercial products, urea, triple super phosphate and potassium chloride as nitrogen-N, phosphorous-P 2 O 5 and potassium-K 2 O respectively, forming the treatments (Table 3). Those were combined according to the fractional factorial arrangement 23 at random, represented by 8 treatments with plots of 4 plants and 4 replications, randomly installed at the planting, totaling 128 plants studied.…”

Section: Methodsmentioning

confidence: 99%

“…Although plants adapted to the low availability of nutrients can develop, it is indispensable to adopt soil fertility management and correction practices in areas cultivated with tachi-branco, in order to increase the productivity of the forest sites or at least maintain it for (Schumacher et al, 2013;Sousa et al, 2016). These management practices should take into account the adoption of nutrient sources through mineral or organic fertilization (Biagiotti et al, 2017), causing the soil to provide all the nutrients in quantities necessary to obtain the desired growth for the plants (Benites et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Effect of NPK Fertilization on Tachigali vulgaris L. G. Silva & H. C. Lima Plants

Palheta¹,

Carvalho²,

Santiago³

et al. 2019

JAS

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The study on nutritional needs of the tree species T. vulgaris, has a great contribution to the formation and conduction of plantations, resulting in their choice in terms of the potential that has been demonstrated in the comparative trials of fast growing species (more than 0.60 m/year in height) and strong regional demand for firewood and coal. The objective of this study was to evaluate the growth of T. vulgaris in response to the application of nitrogen, phosphorus and potassium, from the beginning of the establishment until the second year after planting. The study was carried out in the municipality of Igarapé-Açu-PA, in a T. vulgaris plantation of 1.44 ha (14,400 m2), spacing of 2 m × 3 m (plants × lines). The treatments consisted in the use of commercial products urea, super triple phosphate and potassium chloride as source of N-nitrogen, phosphorus-P2O5 and potassium-K2O respectively, forming 8 treatmentswhich were analyzed using measures repeated in time. Treatment with combined doses of nitrogen and potassium contributed to a higher growth in height and diameter when compared to plants without fertilization. Fertilization of nitrogen (26.67 g) plus potassium (30 g) contributed to a higher planting growth.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of NPK Fertilization on Tachigali vulgaris L. G. Silva & H. C. Lima Plants

Palheta¹,

Carvalho²,

Santiago³

et al. 2019

JAS

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“…Importante destacar que, a plantação de Acacia mearnsii estoca 128%, 1.050% e 54% a mais nitrogênio na biomassa das frações folhas + galhos, casca da madeira e madeira do tronco, respectivamente, em comparação a espécie Eucalyptus saligna aos 8,5 anos de idade, também cultivada na região da depressão central do Rio Grande do Sul, no mesmo tipo de solo (SANTANA et al, 2008). O nitrogênio é um nutriente indispensável na acacicultura, devendo ser adicionado via fertilização mineral para alcance de altas produtividades, pois muitos dos plantios desta espécie são realizados em solos distróficos e há elevado acúmulo do elemento na biomassa (SCHUMACHER et al, 2013).…”

Section: Tabela 2 Concentrações De Nutrientes Na Biomassa Deunclassified

SILVICULTURA DE Acacia mearnsii NO SUL DO BRASIL: BIOMASSA E NUTRIENTES

Dick

Schumacher

2019

BIOFIX

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RESUMOA silvicultura de Acacia mearnsii é uma importante atividade econômica no Rio Grande do Sul e a colheita da biomassa deve visar sempre a sustentabilidade nutricional do sítio. O objetivo deste trabalho é caracterizar o estoque de nutrientes contido na biomassa e a exportação em função de diferentes intensidades de colheita de uma plantação de Acacia mearnsii, na região central do Rio Grande do Sul, Brasil. Nove árvores foram fracionadas em folhas, galhos, casca da madeira e madeira do tronco, de onde foram determinados os pesos secos e teores de nutrientes. A produção total de biomassa é de 174,67 Mg ha -1 , onde 72,8% corresponde à madeira do tronco e 12,5% à casca da madeira. Houve maior acúmulo dos nutrientes N, K, Ca e Fe e, o sistema de colheita onde há retirada da casca da madeira e madeira do tronco, preconizado na acacicultura, remove mais de 50% das quantidades de nutrientes acumuladas na biomassa, o que torna indispensável a manutenção dos resíduos (folhas e galhos) sobre o solo.PALAVRAS-CHAVE: Acácia-negra, Nutrição florestal, Manejo de resíduos. ABSTRACTAcacia mearnsii silviculture is an important economic activity in Rio Grande do Sul state and biomass harvesting should always aim at the nutritional sustainability of the site. The objective of this work is to characterize the nutrient stock contained in the biomass and the export in function of different harvest intensities of a Acacia mearnsii plantation, in the central region of Rio Grande do Sul state, Brazil. Nine trees were fractionated in leaves, branches, stembark and stemwood, from where were determined the dry weights and contents of nutrients. The total biomass production was 174.67 Mg ha -1 , where 72.8% corresponds to the stemwood and 12.5% to the stembark. There was a greater accumulation of N, K, Ca and Fe nutrients, and the harvesting system where there is a removal of the stembark and stemwood, recommended in acaciculture, removes more than 50% of the nutrient amounts accumulated in the biomass, which maintenance of the waste (leaves and branches) on the soil.

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“…However, monoculture requires higher levels of soil nutrients (e.g., 40 kg ha −1 of urea and 80 kg of P 2 O 5 ha −1 during the implantation of the forest [39]) and consumes more energy coming from fossil fuels through the production of chemical fertilizers. The use of industrial N fertilizers interferes directly [5,11,[21][22][23][24][25][26][27][28][29][30][31][32] in the N cycle because it is responsible for about 40% of the entire N circulating on the planet [15].…”

Section: Monoculturementioning

confidence: 99%

Rhizobial inoculation in black wattle plantation (Acacia mearnsii De Wild.) in production systems of southern Brazil

et al. 2019

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Black wattle (Acacia mearnsii De Wild.) is a tree legume native to southeast Australia, but present in all continents. Today it covers about 142,400 ha in Brazil, with plantations concentrated in the southern region of the country. Black wattle may form nodules and establish rhizobial symbiosis capable of fixing N 2 , but rhizobial inoculation is not done in commercial plantations. About 40 kg ha −1 of urea is applied during seedling transplantation. In this review, evidences by which rhizobial inoculation affects monoculture, mixed cultivation, and agroforestry black wattle production systems were searched in literature. Previous measurements in cultivated forests have indicated that biological nitrogen fixation in black wattle may provide up to 200 kg of N ha −1 year −1 to the soil. Therefore, rhizobia inoculation may bring several opportunities to improve black wattle production systems. Black wattle is not a very selective partner in the rhizobial symbiosis, but the genus Bradyrhizobium dominates the rhizobial diversity of black wattle nodules. Investigation on rhizobial diversity in soils where the crop is cultivated may represent an opportunity to find more effective rhizobia strains for inoculants. The successful history of biological nitrogen fixation in grain legumes must inspire the history of tree legumes. Microbiology applied to forestry must overcome challenges on the lack of trained professionals and the development of new application technologies.

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Crescimento da acácia-negra em resposta a aplicação de nitrogênio, fósforo e potássio

Cited by 10 publications

References 9 publications

Effect of NPK Fertilization on Tachigali vulgaris L. G. Silva & H. C. Lima Plants

Effect of NPK Fertilization on Tachigali vulgaris L. G. Silva & H. C. Lima Plants

SILVICULTURA DE Acacia mearnsii NO SUL DO BRASIL: BIOMASSA E NUTRIENTES

Rhizobial inoculation in black wattle plantation (Acacia mearnsii De Wild.) in production systems of southern Brazil

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