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Growth, nutrition and efficiency in the transport, uptake and use of nutrients in african mahogany Rev. Ciênc. Agron.
Souza,Aline das Graças; Smiderle,Oscar José; Chagas,Edvan Alves; Alves,Márcia Souza; Fagundes,Paulo Renato de Oliveira.
ABSTRACT African mahogany is a species preferred by many entrepreneurs as an investment in the forestry sector. However, there are few studies or research on the species, especially in Brazil. The aim of this work was to study the efficiency of nutrient uptake, accumulation, distribution and use in Khaya ivorensis and Khaya senegalensis, in addition to aspects of growth variables and of dry matter partitioning as a function of mineral fertilisation. Morphological, physiological and nutritional parameters were determined in the African mahogany plants 140 days after transplanting (DAT). The greatest zinc (Zn) content was detected in the shoots of both the Khaya ivorensis and Khaya senegalensis plants, accounting for more than 50% of the accumulated total of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Khaya senegalensis; Khaya ivorensis; Seedling production; Nutrient partitioning; Mineral nutrition.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200404
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Nutrient Uptake and Removal by Potato Cultivars as Affected by Phosphate Fertilization of Soils with Different Levels of Phosphorus Availability Rev. Bras. Ciênc. Solo
Fernandes,Adalton Mazetti; Soratto,Rogério Peres; Souza,Emerson de Freitas Cordova de; Job,André Luiz Gomes.
ABSTRACT Studies in the past decades have focused on how tuber yield of potato grown on different types of soil is affected by phosphate fertilizer rates. However, little is known about the effects of phosphorus availability in the soil and of phosphate fertilization on nutrient uptake and removal by the main potato cultivars currently grown in Brazil. Thus, in this study we investigated the influence of P fertilization rates on dry matter (DM) yield and nutrient uptake and removal in five potato cultivars grown on soils with different levels of P availability. Experiments were conducted on soil with low (14 mg dm-3), medium (36 mg dm-3), and high (70 mg dm-3) P availability, in randomized complete blocks with a 5 × 5 factorial arrangement with four...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum tuberosum; Mineral nutrition; Phosphorus rate; Nutrient accumulation; Nutrient partitioning.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100516
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Tree Growth and Nutrient Dynamics in Pine Plantations in Southern Brazil Rev. Bras. Ciênc. Solo
Barros Filho,Nairam Felix de; Schumacher,Mauro Valdir; Neves,Júlio César Lima; Barros,Nairam Felix de; Valadares,Samuel Vasconcelos.
ABSTRACT For the development of nutrient budget models to recommend lime and fertilizers for agricultural and forestry crops, curves of plant growth and nutrient accumulation are required. Information about how nutrients are partitioned between the different plant organs is also necessary, but still scarce for pine in Brazil. This study evaluated the growth, biomass partitioning, and nutrient dynamics in pine forests in southern Brazil. To this end, we assessed unthinned 2, 4, 6, and 8-year-old stands of Pinus taeda L. Three plots of 20 × 30 m per stand were delimited, in which three trees of different classes of diameter at breast height (DBH) were chosen. These trees were measured, felled, and the weight of their fresh components (leaves, branches, bark,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pinus taeda; Nutrient content; Nutrient partitioning; Nutrient use efficiency.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100536
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