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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
12/08/2019 |
Data da última atualização: |
24/01/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
REIS, R. M.; FREITAS, M. S.; SILVA, D. V.; PEREIRA, G. A. M.; PASSOS, A. B. R. de J.; SILVA, A. F. da; SILVA, A. A. da; REIS, M. R. dos. |
Afiliação: |
Ronaldo Matias Reis, Universidade Federal de Viçosa; Matheus Souza Freitas, Universidade Federal Rural do Semi-Árido; Daniel Valadão Silva, Universidade Federal Rural do Semi-Árido; Gustavo Antônio Mendes Pereira, Universidade Federal de Viçosa; Ana Beatriz Rocha de Jesus Passos, Universidade Federal Rural do Semi-Árido; ALEXANDRE FERREIRA DA SILVA, CNPMS; Antonio Alberto da Silva, Universidade Federal de Viçosa; Marcelo Rodrigues dos Reis, Universidade Federal de Viçosa. |
Título: |
Effects of weed management and plant arrangements on yield index of sweet sorghum. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Bioscience Journal, Uberlândia, v. 35, n. 4, p. 983-991, 2019. |
DOI: |
10.14393/BJ-v35n4a2019-36966 |
Idioma: |
Inglês |
Conteúdo: |
Sweet sorghum is currently an important alternative for ethanol production in sugar cane off-season. In this study was to evaluate the effects of plant arrangements and the application of atrazine and Smetolachlor on growth and productivity of sweet sorghum. An experiment was conducted in randomized block design and, arranged in split plots with four repetitions. Plots consisted of spacing (0.25 m, 0.45 m 0.45-0.450.90 m) and sub-plots of weed control methods - atrazine (2000 g ha-1), atrazine + S-metolachlor (2000 + 720 g ha-1), atrazine + S-metolachlor (2000 + 960 g ha-1), atrazine + S-metolachlor (2000 + 1200 g ha-1), atrazine + Smetolachlor (2000 + 1440 g ha-1). Besides that, manual hoeing control was added. The intoxication of sorghum plants and weed control was evaluated at 7, 14 e 28 days after herbicides application (DAA). Plant height, stem diameter, total fresh matter, juice mass and total soluble solids (°Brix) were evaluated at 120 days after crop emergence (DAE). There was no interaction between the factors spacings and control method for variables total matter fresh (TMF), height (H), stem diameter (D), juice mass (JM), and Brix. Application of the mixture (atrazine + S-metolachlor) in the highest doses reduced total fresh matter and °Brix. The spacing of 0.25 m provided the highest productivity of fresh matter, juice mass and increased the °Brix. The application of mixture (atrazine + S-metolachlor) controlled 90% of the weeds at 28 days after application. The increasing in doses of S-metolachlor elevates the intoxication in sorghum plants. The mixture (atrazine + S-metolachlor) has a potential for use in weed control in sweet sorghum, but at doses below 960 g ha-1 of S-metolachlor. MenosSweet sorghum is currently an important alternative for ethanol production in sugar cane off-season. In this study was to evaluate the effects of plant arrangements and the application of atrazine and Smetolachlor on growth and productivity of sweet sorghum. An experiment was conducted in randomized block design and, arranged in split plots with four repetitions. Plots consisted of spacing (0.25 m, 0.45 m 0.45-0.450.90 m) and sub-plots of weed control methods - atrazine (2000 g ha-1), atrazine + S-metolachlor (2000 + 720 g ha-1), atrazine + S-metolachlor (2000 + 960 g ha-1), atrazine + S-metolachlor (2000 + 1200 g ha-1), atrazine + Smetolachlor (2000 + 1440 g ha-1). Besides that, manual hoeing control was added. The intoxication of sorghum plants and weed control was evaluated at 7, 14 e 28 days after herbicides application (DAA). Plant height, stem diameter, total fresh matter, juice mass and total soluble solids (°Brix) were evaluated at 120 days after crop emergence (DAE). There was no interaction between the factors spacings and control method for variables total matter fresh (TMF), height (H), stem diameter (D), juice mass (JM), and Brix. Application of the mixture (atrazine + S-metolachlor) in the highest doses reduced total fresh matter and °Brix. The spacing of 0.25 m provided the highest productivity of fresh matter, juice mass and increased the °Brix. The application of mixture (atrazine + S-metolachlor) controlled 90% of the weeds at 28 days after application. The... Mostrar Tudo |
Palavras-Chave: |
Planta daninha. |
Thesagro: |
Atrazina; Biocombustível; Erva Daninha; Produtividade; Sorghum Bicolor. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/200577/1/Effects-weed.pdf
|
Marc: |
LEADER 02577naa a2200289 a 4500 001 2111257 005 2020-01-24 008 2019 bl uuuu u00u1 u #d 024 7 $a10.14393/BJ-v35n4a2019-36966$2DOI 100 1 $aREIS, R. M. 245 $aEffects of weed management and plant arrangements on yield index of sweet sorghum.$h[electronic resource] 260 $c2019 520 $aSweet sorghum is currently an important alternative for ethanol production in sugar cane off-season. In this study was to evaluate the effects of plant arrangements and the application of atrazine and Smetolachlor on growth and productivity of sweet sorghum. An experiment was conducted in randomized block design and, arranged in split plots with four repetitions. Plots consisted of spacing (0.25 m, 0.45 m 0.45-0.450.90 m) and sub-plots of weed control methods - atrazine (2000 g ha-1), atrazine + S-metolachlor (2000 + 720 g ha-1), atrazine + S-metolachlor (2000 + 960 g ha-1), atrazine + S-metolachlor (2000 + 1200 g ha-1), atrazine + Smetolachlor (2000 + 1440 g ha-1). Besides that, manual hoeing control was added. The intoxication of sorghum plants and weed control was evaluated at 7, 14 e 28 days after herbicides application (DAA). Plant height, stem diameter, total fresh matter, juice mass and total soluble solids (°Brix) were evaluated at 120 days after crop emergence (DAE). There was no interaction between the factors spacings and control method for variables total matter fresh (TMF), height (H), stem diameter (D), juice mass (JM), and Brix. Application of the mixture (atrazine + S-metolachlor) in the highest doses reduced total fresh matter and °Brix. The spacing of 0.25 m provided the highest productivity of fresh matter, juice mass and increased the °Brix. The application of mixture (atrazine + S-metolachlor) controlled 90% of the weeds at 28 days after application. The increasing in doses of S-metolachlor elevates the intoxication in sorghum plants. The mixture (atrazine + S-metolachlor) has a potential for use in weed control in sweet sorghum, but at doses below 960 g ha-1 of S-metolachlor. 650 $aAtrazina 650 $aBiocombustível 650 $aErva Daninha 650 $aProdutividade 650 $aSorghum Bicolor 653 $aPlanta daninha 700 1 $aFREITAS, M. S. 700 1 $aSILVA, D. V. 700 1 $aPEREIRA, G. A. M. 700 1 $aPASSOS, A. B. R. de J. 700 1 $aSILVA, A. F. da 700 1 $aSILVA, A. A. da 700 1 $aREIS, M. R. dos 773 $tBioscience Journal, Uberlândia$gv. 35, n. 4, p. 983-991, 2019.
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Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
19/12/2014 |
Data da última atualização: |
03/06/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 2 |
Autoria: |
VIEIRA, I. C. G.; GARDNER, T.; FERREIRA, J.; LEES, A. C.; BARLOW, J. |
Afiliação: |
Ima Célia Guimarães Vieira, MPEG; Toby Gardner, Stockholm Environment Institute / Instituto International para Sustentabilidade; JOICE NUNES FERREIRA, CPATU; Alexander C. Lees, MPEG; Jos Barlow, MPEG / Lancaster University. |
Título: |
Challenges of Governing Second-Growth Forests: A Case Study from the Brazilian Amazonian State of Pará. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Forests, v. 5, n. 7, p. 1737-1752, 2014. |
DOI: |
http://dx.doi.org/10.3390/f5071737 |
Idioma: |
Inglês |
Conteúdo: |
Despite the growing ecological and social importance of second-growth and regenerating forests across much of the world, significant inconsistencies remain in the legal framework governing these forests in many tropical countries and elsewhere. Such inconsistencies and uncertainties undermine attempts to improve both the transparency and sustainability of management regimes. Here, we present a case-study overview of some of the main challenges facing the governance of second-growth forests and the forest restoration process in the Brazilian Amazon, with a focus on the state of Pará, which is both the most populous state in the Amazon and the state with the highest rates of deforestation in recent years. First, we briefly review the history of environmental governance in Brazil that has led to the current system of legislation governing second-growth forests and the forest restoration process in Pará. Next, we draw on this review to examine the kinds of legislative and operational impediments that stand in the way of the development and implementation of a more effective governance system. In particular, we highlight problems created by significant ambiguities in legal terminology and inconsistencies in guidance given across different levels of government. We also outline some persistent problems with the implementation of legal guidance, including the need to understand local biophysical factors in order to guide an effective restoration program, as well as difficulties presented by access to technical assistance, institutional support and financial resources for the establishment and monitoring of both existing secondary forests and newly regenerating areas of forest. Whilst we focus here on a Brazilian case study, we suggest that these kinds of impediments to the good governance of second-growth forests are commonplace and require more concerted attention from researchers, managers and policy makers. MenosDespite the growing ecological and social importance of second-growth and regenerating forests across much of the world, significant inconsistencies remain in the legal framework governing these forests in many tropical countries and elsewhere. Such inconsistencies and uncertainties undermine attempts to improve both the transparency and sustainability of management regimes. Here, we present a case-study overview of some of the main challenges facing the governance of second-growth forests and the forest restoration process in the Brazilian Amazon, with a focus on the state of Pará, which is both the most populous state in the Amazon and the state with the highest rates of deforestation in recent years. First, we briefly review the history of environmental governance in Brazil that has led to the current system of legislation governing second-growth forests and the forest restoration process in Pará. Next, we draw on this review to examine the kinds of legislative and operational impediments that stand in the way of the development and implementation of a more effective governance system. In particular, we highlight problems created by significant ambiguities in legal terminology and inconsistencies in guidance given across different levels of government. We also outline some persistent problems with the implementation of legal guidance, including the need to understand local biophysical factors in order to guide an effective restoration program, as well as difficulties pres... Mostrar Tudo |
Palavras-Chave: |
Amazon; Forest governance; Governança florestal; Restauração; Restoration. |
Thesagro: |
Floresta Secundaria. |
Thesaurus NAL: |
Amazonia; secondary forests. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02747naa a2200277 a 4500 001 2003294 005 2022-06-03 008 2014 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.3390/f5071737$2DOI 100 1 $aVIEIRA, I. C. G. 245 $aChallenges of Governing Second-Growth Forests$bA Case Study from the Brazilian Amazonian State of Pará.$h[electronic resource] 260 $c2014 520 $aDespite the growing ecological and social importance of second-growth and regenerating forests across much of the world, significant inconsistencies remain in the legal framework governing these forests in many tropical countries and elsewhere. Such inconsistencies and uncertainties undermine attempts to improve both the transparency and sustainability of management regimes. Here, we present a case-study overview of some of the main challenges facing the governance of second-growth forests and the forest restoration process in the Brazilian Amazon, with a focus on the state of Pará, which is both the most populous state in the Amazon and the state with the highest rates of deforestation in recent years. First, we briefly review the history of environmental governance in Brazil that has led to the current system of legislation governing second-growth forests and the forest restoration process in Pará. Next, we draw on this review to examine the kinds of legislative and operational impediments that stand in the way of the development and implementation of a more effective governance system. In particular, we highlight problems created by significant ambiguities in legal terminology and inconsistencies in guidance given across different levels of government. We also outline some persistent problems with the implementation of legal guidance, including the need to understand local biophysical factors in order to guide an effective restoration program, as well as difficulties presented by access to technical assistance, institutional support and financial resources for the establishment and monitoring of both existing secondary forests and newly regenerating areas of forest. Whilst we focus here on a Brazilian case study, we suggest that these kinds of impediments to the good governance of second-growth forests are commonplace and require more concerted attention from researchers, managers and policy makers. 650 $aAmazonia 650 $asecondary forests 650 $aFloresta Secundaria 653 $aAmazon 653 $aForest governance 653 $aGovernança florestal 653 $aRestauração 653 $aRestoration 700 1 $aGARDNER, T. 700 1 $aFERREIRA, J. 700 1 $aLEES, A. C. 700 1 $aBARLOW, J. 773 $tForests$gv. 5, n. 7, p. 1737-1752, 2014.
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