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Biblioteca(s): |
Biblioteca Rui Tendinha. |
Data corrente: |
24/04/2015 |
Data da última atualização: |
24/04/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUZA, G. S. de.; SOUZA, Z. M. de.; COOPER, M.; TORMENA, C. A. |
Afiliação: |
Gustavo Soares de Souza, Incaper; Zigomar Menezes de Souza; Miguel Cooper; Cássio Antônio Tormena. |
Título: |
Controlled traffic and soil physical quality of an Oxisol under sugarcane cultivation. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 72, n.3, p. 270-277, 2015. |
DOI: |
http://dx.doi.org/10.1590/0103-9016-2014-0078 |
Idioma: |
Inglês |
Conteúdo: |
Machinery traffic in sugarcane (Saccharumsp.) plantations reduces soil physical quality, and hinders both root development and crop yield. We evaluated the physical quality of an Oxisol and the development of sugarcane roots under controlled traffic. The treatments assessed were: without controlled machinery traffic (WCT), controlled traffic by adjusting the tractor and infield wagons to a 3.0 m track width with the operator guiding the machinery (CT1) and the previous treatment using real time kinematic / global positioning system (RTK / GPS) precision auto steer (CT2). Soil samples were collected from the planting rows, seedbed and inter-row center to determine the least limiting water range (LLWR) and soil porosity from scanned 2-D images. The root dry mass was sampled from monoliths, separated from the soil by washing through a 2-mm sieve and dried in an oven. A higher LLWR was observed in the planting row under CT1 and CT2 than under WCT. The planting row had a predominance of complex pores with a diameter > 500 µm in the 0.15-0.27 m depth layer under CT1 and CT2. In the planting rows under WCT, the root dry mass was only 44 % of that measured under CT2. Benefits regarding soil physical quality and growth roots were observed when the tractor-wagon track width was adjusted based on the sugarcane spacing using either precision auto steering or manual operation of the machinery. |
Palavras-Chave: |
Least limiting water range; Machinery traffic; Root system; Soil compaction. |
Categoria do assunto: |
-- |
URL: |
http://biblioteca.incaper.es.gov.br/digital/bitstream/item/742/1/gustavosoares2.pdf
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Marc: |
LEADER 02095naa a2200217 a 4500 001 1006320 005 2015-04-24 008 2015 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.1590/0103-9016-2014-0078$2DOI 100 1 $aSOUZA, G. S. de. 245 $aControlled traffic and soil physical quality of an Oxisol under sugarcane cultivation.$h[electronic resource] 260 $c2015 520 $aMachinery traffic in sugarcane (Saccharumsp.) plantations reduces soil physical quality, and hinders both root development and crop yield. We evaluated the physical quality of an Oxisol and the development of sugarcane roots under controlled traffic. The treatments assessed were: without controlled machinery traffic (WCT), controlled traffic by adjusting the tractor and infield wagons to a 3.0 m track width with the operator guiding the machinery (CT1) and the previous treatment using real time kinematic / global positioning system (RTK / GPS) precision auto steer (CT2). Soil samples were collected from the planting rows, seedbed and inter-row center to determine the least limiting water range (LLWR) and soil porosity from scanned 2-D images. The root dry mass was sampled from monoliths, separated from the soil by washing through a 2-mm sieve and dried in an oven. A higher LLWR was observed in the planting row under CT1 and CT2 than under WCT. The planting row had a predominance of complex pores with a diameter > 500 µm in the 0.15-0.27 m depth layer under CT1 and CT2. In the planting rows under WCT, the root dry mass was only 44 % of that measured under CT2. Benefits regarding soil physical quality and growth roots were observed when the tractor-wagon track width was adjusted based on the sugarcane spacing using either precision auto steering or manual operation of the machinery. 653 $aLeast limiting water range 653 $aMachinery traffic 653 $aRoot system 653 $aSoil compaction 700 1 $aSOUZA, Z. M. de. 700 1 $aCOOPER, M. 700 1 $aTORMENA, C. A. 773 $tScientia Agricola, Piracicaba$gv. 72, n.3, p. 270-277, 2015.
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Biblioteca Rui Tendinha (BRT) |
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Registro Completo |
Biblioteca(s): |
Biblioteca Rui Tendinha. |
Data corrente: |
12/08/2019 |
Data da última atualização: |
12/08/2019 |
Tipo da produção científica: |
Publicação em Anais de Congresso |
Autoria: |
FERRÃO, R. G.; FERRÃO, M. A. G.; FONSECA, A. F. A. da.; CRUZ, C. D.; CECON, P. R.; CRESCENCIO, P. C. S. |
Afiliação: |
Romário Gava Ferrão, Incaper; Maria Amélia Gava Ferrão, Incaper/Embrapa Café; Aymbiré Francisco Almeida da Fonseca, Incaper/Embrapa Café; UFV; UFV; UFV. |
Título: |
Genetic divergence in clones of Coffea canephora variety conilon by different methods of multivariate analysis. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
In: 22nd International Conference on Coffee Science, ASIC 2008, Campinas, SP, Brazil, 14-19 September, 2008. |
Idioma: |
Inglês |
Conteúdo: |
The objective of this work was to study by different methods of multivariate analysis the genetic divergence of forty genotypes of conilon coffee of the Coffee Genetic Improvement Program of the Capixaba Institute of Research - Incaper. In the analysis of dissimilarity, evaluated by the generalized distance of Mahalanobis, the genotypes most dissimilar were ES 318 and ES 01 in Sooretama, and ES 309 and ES 315 in Marilândia, Those most similar were ES 330 and ES 336 in Sooretama and ES 324 and ES 333 in Marilândia. In the study of clustering by the technique of Tocher, the genotypes were distributed in ten groups in
Sooretama and five in Marilândia. In both locations there was good agreement in the disposition of the genotypes,in amount of genetic divergence, when the hierarchical nearest neighbor method and the method of Tocher were used. We verified good genetic divergence among the clones for the differents biometric methodologies studies. The results obtained, associated to the main agronomic characteristics evaluated, were important for the strategies addressing genetic improvement through sexual and asexual reproduction and propagation. The clones ES 01, ES 308, ES 309, ES 311, ES 321, ES 327, ES 328, ES 329, ES 330 and ES
337 are promising clones to be maintained and used in the Program of Improvement. |
Palavras-Chave: |
Café conilon. |
Thesaurus NAL: |
Coffea canephora; Coffee Genetic; Methods; Multivariate analysis; Propagation. |
Categoria do assunto: |
G Melhoramento Genético |
URL: |
https://biblioteca.incaper.es.gov.br/digital/bitstream/123456789/3695/1/genetic-divergence-ferrao.pdf
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Marc: |
LEADER 02127nam a2200241 a 4500 001 1021552 005 2019-08-12 008 2008 bl uuuu u01u1 u #d 100 1 $aFERRÃO, R. G. 245 $aGenetic divergence in clones of Coffea canephora variety conilon by different methods of multivariate analysis.$h[electronic resource] 260 $aIn: 22nd International Conference on Coffee Science, ASIC 2008, Campinas, SP, Brazil, 14-19 September$c2008 520 $aThe objective of this work was to study by different methods of multivariate analysis the genetic divergence of forty genotypes of conilon coffee of the Coffee Genetic Improvement Program of the Capixaba Institute of Research - Incaper. In the analysis of dissimilarity, evaluated by the generalized distance of Mahalanobis, the genotypes most dissimilar were ES 318 and ES 01 in Sooretama, and ES 309 and ES 315 in Marilândia, Those most similar were ES 330 and ES 336 in Sooretama and ES 324 and ES 333 in Marilândia. In the study of clustering by the technique of Tocher, the genotypes were distributed in ten groups in Sooretama and five in Marilândia. In both locations there was good agreement in the disposition of the genotypes,in amount of genetic divergence, when the hierarchical nearest neighbor method and the method of Tocher were used. We verified good genetic divergence among the clones for the differents biometric methodologies studies. The results obtained, associated to the main agronomic characteristics evaluated, were important for the strategies addressing genetic improvement through sexual and asexual reproduction and propagation. The clones ES 01, ES 308, ES 309, ES 311, ES 321, ES 327, ES 328, ES 329, ES 330 and ES 337 are promising clones to be maintained and used in the Program of Improvement. 650 $aCoffea canephora 650 $aCoffee Genetic 650 $aMethods 650 $aMultivariate analysis 650 $aPropagation 653 $aCafé conilon 700 1 $aFERRÃO, M. A. G. 700 1 $aFONSECA, A. F. A. da. 700 1 $aCRUZ, C. D. 700 1 $aCECON, P. R. 700 1 $aCRESCENCIO, P. C. S.
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