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Registro Completo |
Biblioteca(s): |
Biblioteca Rui Tendinha. |
Data corrente: |
15/08/2016 |
Data da última atualização: |
28/09/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ROCHA, J. H. T.; GONÇALVES, J. L. de M.; GAVA, J. L.; GODINHO, T. de O.; MELO, E. A. S. C.; BAZANI, J. H.; HUBNER, A.; ARTHUR JÚNIOR, J. C.; WICHERT, M. P. |
Afiliação: |
José Henrique Tertulino Rocha, USP/ESALQ; José Leonardo de Moraes Gonçalves, ESALQ; José L. Gava, Suzano Pulp and Paper S.A.; Tiago de Oliveira Godinho, Incaper; Eduardo A.S.C. Melo, Asia Pulp and Paper; José Henrique Bazani, Tree Agroflorestal; Ayeska Hubner, ESALQ; José C. Arthur Junior, UFRRJ; Marcos P. Wichert, FIBRIA. |
Título: |
Forest residue maintenance increased the wood productivity of a Eucalyptus plantation over two short rotations. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
FOREST ECOLOGY AND MANAGEMENT, v. 379, p. 1-10, november 2016. |
Idioma: |
Inglês |
Conteúdo: |
Forest residue (i.e., litter layer, slash and bark), when used as biomass for energy production, represents an important strategy for use as a renewable energy source in many countries. However, these residues can also have importance as sources of nutrients for trees and soil conservation. The objectives of the present study were to assess the effects of forest residue management on soil, wood production and nutrient accumulation dynamics during two crop rotations in a Eucalyptus grandis plantation. Thus, we set up an experimental site with different intensities of removal, burning and incorporation of forest residues (first crop rotation of study ? R1). The stands of all treatments were harvested after eight years, and the trial was re-established with all forest residues maintained on the soil across all treatments (second crop rotation of study ? R2). R2 was conducted for eight more years. The growth and nutritional status, biomass and nutrient accumulation of the trees were assessed. The forest residue burn increased the initial nutrient availability in the soil; however, this availability returned to initial levels in a short period of time. Wood productivity decreased by approximately 40% with the removal of all forest residues in R1. In R2, wood productivity after the removal or burning of forest residues was 6% lower than when all forest residues were maintained on the soil. |
Palavras-Chave: |
Biomassa; Eucalipto; Nutrição. |
Thesaurus NAL: |
Eucalyptus grandis; Forest residue management; Minimal tillage; Nutrient cycling. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02310naa a2200301 a 4500 001 1011484 005 2017-09-28 008 2016 bl uuuu u00u1 u #d 100 1 $aROCHA, J. H. T. 245 $aForest residue maintenance increased the wood productivity of a Eucalyptus plantation over two short rotations.$h[electronic resource] 260 $c2016 520 $aForest residue (i.e., litter layer, slash and bark), when used as biomass for energy production, represents an important strategy for use as a renewable energy source in many countries. However, these residues can also have importance as sources of nutrients for trees and soil conservation. The objectives of the present study were to assess the effects of forest residue management on soil, wood production and nutrient accumulation dynamics during two crop rotations in a Eucalyptus grandis plantation. Thus, we set up an experimental site with different intensities of removal, burning and incorporation of forest residues (first crop rotation of study ? R1). The stands of all treatments were harvested after eight years, and the trial was re-established with all forest residues maintained on the soil across all treatments (second crop rotation of study ? R2). R2 was conducted for eight more years. The growth and nutritional status, biomass and nutrient accumulation of the trees were assessed. The forest residue burn increased the initial nutrient availability in the soil; however, this availability returned to initial levels in a short period of time. Wood productivity decreased by approximately 40% with the removal of all forest residues in R1. In R2, wood productivity after the removal or burning of forest residues was 6% lower than when all forest residues were maintained on the soil. 650 $aEucalyptus grandis 650 $aForest residue management 650 $aMinimal tillage 650 $aNutrient cycling 653 $aBiomassa 653 $aEucalipto 653 $aNutrição 700 1 $aGONÇALVES, J. L. de M. 700 1 $aGAVA, J. L. 700 1 $aGODINHO, T. de O. 700 1 $aMELO, E. A. S. C. 700 1 $aBAZANI, J. H. 700 1 $aHUBNER, A. 700 1 $aARTHUR JÚNIOR, J. C. 700 1 $aWICHERT, M. P. 773 $tFOREST ECOLOGY AND MANAGEMENT$gv. 379, p. 1-10, november 2016.
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Registro Completo |
Biblioteca(s): |
Biblioteca Rui Tendinha. |
Data corrente: |
12/06/2018 |
Data da última atualização: |
12/06/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
KOBI, H. B.; MARTINS, M. C.; SILVA, P. I.; SOUZA, J. L. de.; CARNEIRO, J. C. S.; HELENO, F.; QUEIROZ, M. E. L. R.; COSTA, N. M. B. |
Afiliação: |
H.B. Kobi, UFES; M.C. Martins, UFES; P.I. Silva, UFES; Jacimar Luis de Souza, Incaper; J.C.S. Carneiro, UFES; F. Heleno, UFV; M.E.L.R. Queiroz, UFV; N.M.B. Costa, UFES. |
Título: |
Organic and conventional strawberries: nutritional quality, antioxidant characteristics and pesticide residues. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Fruits, v. 73, n. 1, p. 39-47, 2018. |
DOI: |
10.17660/th2018/73.1.5 |
Idioma: |
Inglês |
Conteúdo: |
Organic farming system may affect the food composition and produce healthy foods. The aim of this study was to compare the nutritional quality, antioxidant properties and pesticide residues of organic or conventional strawberries. Materials and methods ? In a first experiment, organic and conventional fruits from the cvs. Camarosa and Albion were obtained directly from the farmers. Subsequently, ?Camarosa? was produced in organic and conventional systems, under controlled conditions. Pesticide residues were analysed in the second trial and the remaining parameters were evaluated in both experiments. Results and discussion ? In the first experiment, the fruits of organic cv. Albion showed higher moisture (91.8%) and lower total solid (8.2%), and carbohydrate (5.7%) contents. ?Albion? fruits also showed higher total solid content than ?Camarosa? fruits in conventional farming system. Pesticide residues were not detected. Under controlled conditions, organic ?Camarosa? fruits had higher moisture (91.5%) and ash (0.4%) contents, whereas conventional strawberries had higher soluble solids (8.5 °Brix), proteins (0.9%) and anthocyanins (17.7 mg 100 g-1). Residues of azoxystrobin, lambda-cyhalothrin and thiamethoxam were detected at values below the limit of detection (MenosOrganic farming system may affect the food composition and produce healthy foods. The aim of this study was to compare the nutritional quality, antioxidant properties and pesticide residues of organic or conventional strawberries. Materials and methods ? In a first experiment, organic and conventional fruits from the cvs. Camarosa and Albion were obtained directly from the farmers. Subsequently, ?Camarosa? was produced in organic and conventional systems, under controlled conditions. Pesticide residues were analysed in the second trial and the remaining parameters were evaluated in both experiments. Results and discussion ? In the first experiment, the fruits of organic cv. Albion showed higher moisture (91.8%) and lower total solid (8.2%), and carbohydrate (5.7%) contents. ?Albion? fruits also showed higher total solid content than ?Camarosa? fruits in conventional farming system. Pesticide residues were not detected. Under controlled conditions, organic ?Camarosa? fruits had higher moisture (91.5%) and ash (0.4%) contents, whereas conventional strawberries had higher soluble solids (8.5 °Brix), proteins (0.9%) and anthocyanins (17.7 mg 100 g-1). Residues of azoxystrobin, lambda-cyhalothrin and thiamethoxam were detected at values below the limit of detection (Mostrar Tudo |
Palavras-Chave: |
Morango. |
Thesaurus NAL: |
Agroecosystems; Brazil; Food safety; Fragaria × ananassa; Fruit quality; Strawberry. |
Categoria do assunto: |
-- |
Marc: |
LEADER 04542naa a2200301 a 4500 001 1020372 005 2018-06-12 008 2018 bl uuuu u00u1 u #d 024 7 $a10.17660/th2018/73.1.5$2DOI 100 1 $aKOBI, H. B. 245 $aOrganic and conventional strawberries$bnutritional quality, antioxidant characteristics and pesticide residues.$h[electronic resource] 260 $c2018 520 $aOrganic farming system may affect the food composition and produce healthy foods. The aim of this study was to compare the nutritional quality, antioxidant properties and pesticide residues of organic or conventional strawberries. Materials and methods ? In a first experiment, organic and conventional fruits from the cvs. Camarosa and Albion were obtained directly from the farmers. Subsequently, ?Camarosa? was produced in organic and conventional systems, under controlled conditions. Pesticide residues were analysed in the second trial and the remaining parameters were evaluated in both experiments. Results and discussion ? In the first experiment, the fruits of organic cv. Albion showed higher moisture (91.8%) and lower total solid (8.2%), and carbohydrate (5.7%) contents. ?Albion? fruits also showed higher total solid content than ?Camarosa? fruits in conventional farming system. Pesticide residues were not detected. Under controlled conditions, organic ?Camarosa? fruits had higher moisture (91.5%) and ash (0.4%) contents, whereas conventional strawberries had higher soluble solids (8.5 °Brix), proteins (0.9%) and anthocyanins (17.7 mg 100 g-1). Residues of azoxystrobin, lambda-cyhalothrin and thiamethoxam were detected at values below the limit of detection (650 $aAgroecosystems 650 $aBrazil 650 $aFood safety 650 $aFragaria × ananassa 650 $aFruit quality 650 $aStrawberry 653 $aMorango 700 1 $aMARTINS, M. C. 700 1 $aSILVA, P. I. 700 1 $aSOUZA, J. L. de. 700 1 $aCARNEIRO, J. C. S. 700 1 $aHELENO, F. 700 1 $aQUEIROZ, M. E. L. R. 700 1 $aCOSTA, N. M. B. 773 $tFruits$gv. 73, n. 1, p. 39-47, 2018.
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