|
|
|
| Registros recuperados: 47 | |
|
|
| MENGUE,VAGNER P.; FONTANA,DENISE C.. |
| ABSTRACT One of the most relevant activities of Brazilian economy is agriculture. Among the main crops in Brazil, rice is one of high relevance. The state of Rio Grande do Sul, in Southern Brazil, is responsible for 68.7% of domestic production (IBGE, 2013). The goal of this study was to develop a low-cost methodology with a regional scope to identify suitable areas for irrigated rice cropping in this state, using spectro-temporal behavior of vegetation index by means of MODIS images and HAND model. The rice-cropped area of this study was the southern half of the State. Using the HAND model, flood areas were mapped to identify irrigated rice cultivation. We used multi-temporal images of vegetation index from MODIS sensor, covering the period from August... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HAND Model; EVI; MODIS; Irrigated rice; Mapping. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000200329 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| CAMPOS, I. S.; MEDEIROS, J. A.. |
| As cultivares atualmente plantadas na região apresentam porte alto, principalmente quando cultivadas em áreas de matas recém desbravadas e espaçamento reduzido, o que favorece o acamamento. um dos principais problemas da orizicultura acreana. Os trabalhos de introdução de material genético para as condições do Estado do Acre, não tem apresentado resultados satisfatórios, possivelmente, pelo fato desse material ter sido desenvolvido em região de clima, solo e cultivo, diferentes das condições desse Estado. Partindo de 30 cultivares provenientes do Centro de Pesquisa Agropecuária do Trópico Úmido (CPATU), foi conduzido um ensaio no campo experimental da EMBRAPA/UEPAE-Rio Branco, no ano agrícola 19801/81, em área de terra firme, de Latossolo Amarelo, textura... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Irrigated rice; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Aclimatación; Factores ambientales.; Ensayos de variedades; Agricultura de regadío; Agricultura de secano; Arroz irrigado; Cultivo de sequeiro; Comportamento de variedade; Aclimatação; Condição ambiental; Rice; Irrigated farming; Dryland farming; Variety trials; Acclimation; Environmental factors.. |
| Ano: 1982 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492317 |
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| ULGUIM,A.R.; SILVA,B.M.; AGOSTINETTO,D.; AVILA NETO,R.C.; ZANDONÁ,R.R.. |
| ABSTRACT: Among the species of the genus Cyperus occurring in paddy rice, C. esculentus, C. difformis and C. iria are the most important, and the latter two are reported as resistant to herbicides in Rio Grande do Sul (RS). The aim of this work was to characterize and mapping the occurrence of resistant plants of the genus Cyperus in areas of paddy rice in RS State, and to analyze the agronomic factors that interfere in the resistance selection. Seeds from individual plants were harvested in the 2014/15 crop, characterized as control failures by the application of acetolactate synthase inhibitors (ALS), totaling 43 samples. At the time of collection, the grower was inquired on aspects related to the management of weeds in the crop. Seeds were germinated in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acetolactate synthase; Cyperus esculentus; C. iria; C. difformis; Irrigated rice. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100254 |
| |
|
|
| Moscôso,Janielly Silva Costa; Silva,Leandro Souza da; Pujol,Stefen Barbosa; Giacomini,Sandro José; Severo,Fabiane Figueiredo; Marzari,Laura Brondani; Molin,Gustavo Dal. |
| ABSTRACT Methane (CH4) is the second major greenhouse gas after CO2, exerting a significant influence on the climate and the chemistry of the atmosphere. In lowland soil, acetate and H2/CO2 are the most important precursors of CH4 and formed from organic matter fermentation in an anaerobic environment, giving rise to short-chain organic acids (ethanoic, propanoic, and butanoic), depending on the type of crop residue and the soil management system. Ethanoic acid can be directly converted to CH4 by methanogenic microorganisms, but propanoic and butanoic acids must be converted to acetate before being converted to CH4. This study aimed to quantify, in isolation, the dynamics and CH4 emission potential of the three short-chain organic acids found in flooded... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ethanoic acid; Butanoic acid; Propanoic acid; Methanogenesis; Irrigated rice. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100412 |
| |
|
| |
| Registros recuperados: 47 | |
|
|
|
