Nutrient Deposition
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Different Patterns Of Nutrient Cycling In Contiguous Phytophysiognomies Of Atlantic Forest, Brazil
ABSTRACT The present study aimed to evaluate fine aboveground litterfall, deposition of nitrogen and phosphorus from total litterfall and leaf litter decomposition in areas of tall forest (Mata Alta) and low forest on sandy soils (Mussununga) in southeastern Brazil. Fine litterfall was collected monthly for two years (from June/2007 to May/2009) in 10 conica
Floresta Ambient.. Publicado em: 13/01/2020
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2. Relief Position and Soil Properties under Continuous Banana Cropping in Subhumid Climate in Northeast Brazil
ABSTRACT Sequences of thick and eroded soils in hills surfaces are cultivated with banana since the beginning of the last century in the Northeast of Pernambuco (PE), Brazil. Measurements of soil properties depending on soil slope under intensive agricultural cultivation are limited mostly as the pedogenetic approach. This study aimed to identify the dominan
Rev. Bras. Ciênc. Solo. Publicado em: 09/09/2019
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3. Dietary protein requirements for tambaqui Colossoma macropomum (Cuvier, 1818) juvenile
RESUMO O tambaqui, Colossoma macropomum, é uma das espécies nativas da fauna brasileira com grande potencial de expansão, todavia, os estudos de exigências nutricionais são escassos e apresentam resultados conflitantes, a ponto de não termos informações suficientes para formular dietas específicas para a espécie, nas diferentes fases de crescimento
Rev. Ciênc. Agron.. Publicado em: 2019-06
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4. Nutrient Cycling in Corymbia citriodora in the State of Rio de Janeiro, Brazil
ABSTRACT The quantification and transfer of nutrient stock among compartments in the forest environment is the key to understanding the nutrient cycling process. The aim of this study was to quantify the nutrient stock and dynamics by litter deposition in a Corymbia citriodora settlement in the Mountainous region of the State of Rio de Janeiro. Different pl
Floresta Ambient.. Publicado em: 04/04/2019
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5. Biomass Deposition and Chemical Composition of Litterfall in Clonal Eucalyptus Plantations
ABSTRACT Productivity in clonal eucalyptus plantations depends on the genetic material and on the demand and cycling of nutrients, making studies that evaluate these requirements necessary. The aim of this study was to evaluate the effect of management (with and without thinning) on the deposition, chemical composition and nutrient contribution in litter at
Floresta Ambient.. Publicado em: 04/04/2019
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6. Potassium Fertilization of Eucalyptus in an Entisol in Low-Elevation Cerrado
ABSTRACT Potassium (K) is one of the most highly accumulating nutrients in Eucalyptus and, consequently, is heavily exported by the harvesting of wood. Moreover, its availability in the soil in most Brazilian plantation areas is very low, especially in the regions of the Cerrado biome, which has soils with low natural fertility and marked water deficits, imp
Rev. Bras. Ciênc. Solo. Publicado em: 14/02/2019
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7. Adjustment of nonlinear models and growth parameters and body nutrient deposition in meat-type and laying quail
ABSTRACT The objective of this study was to determine the adjustment quality of non-linear models and estimate the growth parameters and body chemical composition of a meat-type quail strain (Coturnix coturnix coturnix) and two laying quail strains (Coturnix coturnix japonica), designated yellow and red. The study used 1500 quail, not sexed, distributed in a
R. Bras. Zootec.. Publicado em: 29/11/2018
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8. Nutritional plans of digestible phosphorus for growing-finishing barrows
ABSTRACT This study was conducted to evaluate nutritional plans of digestible phosphorus for barrows weighing between 30 and 100 kg. Eighty animals were distributed in a randomized block design with five nutritional plans containing 2.19-1.86-1.71, 2.57-2.23-2.09, 2.94-2.61-2.46, 3.32-2.99-2.84, and 3.70-3.36-3.32 g of digestible phosphorus kg−1 of diet, r
R. Bras. Zootec.. Publicado em: 04/10/2018
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9. Estimation of growth parameters of body weight and body nutrient deposition in males and females of meat- and laying-type quail using the Gompertz model
ABSTRACT The objective of this study was to estimate the growth parameters of body weight and body nutrient deposition in males and females of one meat- (Coturnix coturnix coturnix) and two laying-type quail strains (Coturnix coturnix japonica), designated either yellow or red, using the Gompertz model. A total of 1350 quail from 1 to 42 days of age were use
R. Bras. Zootec.. Publicado em: 26/03/2018
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10. Neutral detergent fibre in piglet diets: digestibility, performance, and deposition of body nutrients
ABSTRACT A total 120 piglets with an average live weight of 7.00 kg, weaned at 21 days, were used to evaluate the effect of neutral detergent fibre levels on the digestibility of nutrients and energy from the diets, productive performance, and the composition and rate of deposition of nutrients and energy in the bodies of piglets in the nursery phase. The an
An. Acad. Bras. Ciênc.. Publicado em: 07/12/2017
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11. Description of growth and body composition of freshwater angelfish (Pterophyllum scalare) by Gompertz model
ABSTRACT The objective of this study was to describe the growth of freshwater angelfish (Pterophyllum scalare) using the Gompertz model, determining the relative growth and allometric coefficients of body components in relation to body weight and protein weight. Six hundred animals were grown until 233 days of age. Data on chemical composition (water, lipid,
R. Bras. Zootec.. Publicado em: 2017-08
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12. Litterfall and Nutrient Dynamics in a Mature Atlantic Rainforest in Brazil
ABSTRACT We assessed litterfall and nutrient cycling in an old-growth Atlantic rainforest in southern Brazil. Plant litter collected monthly was separated into: leaves, twigs, reproductive organs, and fragments, and dried, weighed, and ground. Determination of carbon, nitrogen, phosphorus, potassium, calcium, magnesium, and sodium contents of different litte
Floresta Ambient.. Publicado em: 15/05/2017