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| Registros recuperados: 85 | |
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| Campos,Juliana Loureiro Almeida; Albuquerque,Ulysses Paulino; Peroni,Nivaldo; Araújo,Elcida de Lima. |
| ABSTRACT We studied the population structure and fruit availability of the babassu palm, Attalea speciosa, in three human-dominated landscapes located near a rural community in the region of Araripe, in the Northeast Region of Brazil, that were under intense fruit harvest. Fifty 10 x 10 m plots were randomly established in each of the three landscapes, and all individuals of A. speciosa within the plots were classified as seedlings, juveniles or adults, with the height of all adult individuals being measured. An additional 20 individuals were marked in each landscape, and the number of total bunches, fruits per bunch and bunches per palm tree were recorded. The populations of A. speciosa in the three landscapes exhibited an inverted J-shape plot, but... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extractivism; Harvest; Landscape management; Non-timber forest products; Population ecology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000200267 |
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| Chagas, Jorge Henrique; Universidade Federal de Lavras; Pinto, Jose Eduardo Brasil Pereira; Universidade Federal de Lavras, Laboratório de Cultura de Tecidos e Plantas Medicinais.; Bertolucci, Suzan Kelly Vilela; Universidade Federal de Lavras; Santos, Fúlvia Maria do; Unviersidade Fderal de Lavras. |
| O presente estudo objetivou avaliar o efeito da época e da idade da planta na colheita na produção de biomassa seca e no teor percentual do óleo essencial e o tempo de armazenamento das plantas de Mentha arvensis L. Foram instalados dois experimentos. No primeiro, foi avaliado o efeito de três idades na colheita, 80, 100 e 120 dias após o transplantio, e três idades na segunda colheita, 60, 75 e 90 dias. O delineamento utilizado foi de blocos casualizados, com quatro repetições, em esquema fatorial 3 x 3. No segundo experimento, foram avaliadas três épocas de colheita: início de janeiro, final de março e início de junho. O material colhido foi seco em estufa a 37°C, calculada a biomassa seca da parte aérea, extraído o óleo essencial em aparelho de... |
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Palavras-chave: 5.01.00.00-9; 5.01.03.00-8 planta medicinal; Mentha arvensis L.; Óleo essencial; Colheita Fitotecnia medicinal plant; Mentha arvensis L.; Essential oil; Harvest. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5698 |
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| Azadbakht, Mohsen; Jahanian, Mahshid; Asghari, Ali; Nowrouzieh, Shahram. |
| The cotton plant contains fruits called capsules or bolls, in which the cotton fiber grows, and after the growth stages, the fibers appear through separating the carpels. This research investigated the required force to pick the cottonseed from four cotton variety (Golestan, Khorshid, Sajedi, and Kashmar) in three levels of moisture (three harvesting times) and three revolutions (1500, 2500 and 3500 rpm). To measure this force, designed and manufactured a device similar to a spindle cotton picker and using the actual needle of John Deere machine 9920. The bolls were tested in different revolution and moisture levels with the device. The results of experiments showed that the cross-effects of variety on speed, harvesting time on variety and harvesting... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cotton; Force; Fiber; Harvest; Cottonseed. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5354 |
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| Miranda,Rafaela Marques de; Dias,Denise Cunha Fernandes dos Santos; Picoli,Edgard Augusto de Toledo; Silva,Patrícia Pereira da; Nascimento,Warley Marcos. |
| ABSTRACT The adequate time for carrot seed harvest influences its physiological quality. The objective of this study was to evaluate physiological, anatomical and histochemical changes in carrot seeds harvested at different stages of development and to establish the most appropriate harvest time. Secondary umbels were harvested at 14, 21, 28, 35, 42, 49, 56 and 63 days after anthesis (DAA). For seed anatomical and histochemical characterization, sections were stained with Toluidine blue stain, Xylidine Ponceau, Lugol’s iodine, Sudan Black B and submitted to polarized light. Seed moisture content, seed dry matter, germination, first count, emergence percentage and emergence speed index of seedlings were evaluated. Cultivar Brasília carrot seeds at 14 DAA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maturity; Harvest; Reserve substances; Germination; Vigor. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200169 |
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| Silva,Laércio Junio da; Dias,Denise Cunha Fernandes dos Santos; Milagres,Carla do Carmo; Dias,Luiz Antônio dos Santos. |
| The physic nut (Jatropha curcas L.) has great potential for use in biodiesel production due to the high oil content of its seeds. Production of high quality seeds depends upon the appropriate time of harvest. A field experiment was carried out to monitor the maturation process of physic nut seeds and to establish the ideal harvest time of the seeds based on external fruit color. Fruits were collected at different maturation stages based on the external color: green, yellow-green, yellow, yellow-brown and brown. Seeds were extracted manually and, after natural drying, were submitted to the following tests and determinations: moisture content and dry matter, germination, first count seedling emergence, seedling growth, accelerated aging, electrical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Germination; Vigor; Harvest; Maturity. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000100005 |
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| Infante,Rodrigo; Rubio,Pía; Contador,Loreto; Noferini,Massimo; Costa,Guglielmo. |
| The objective determination of the optimal harvest date for plums intended either for industrial processing or for consumption as fresh fruit is a fundamental concern of the fruit industry. A portable visible/near infrared (Vis/NIR) spectroscopic device was used to sort D'Agen plums harvested around the traditional commercial harvest date. The chlorophyll absorbance index was found to be capable of segregating plums into classes of maturity according to various concentrations of soluble solids and fruit compression strenght values. Fruits with a chlorophyll absorbance index value of less than 1.59 showed no differences in flesh firmness. Plums harvested with chlorophyll absorbance index values of 1.20-1.29 had a fruit compression strenght of 1.25 N and a... |
| Tipo: Journal article |
Palavras-chave: European plum; Harvest; Maturity; Vis/NIR. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200004 |
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| Ingram, Daniel J.; School of Life Sciences, University of Sussex; D.Ingram@sussex.ac.uk; Coad, Lauren; Environmental Change Institute, University of Oxford; United Nations Environment Programme World Conservation Monitoring Centre; lauren.coad@ouce.ox.ac.uk; Collen, Ben; Centre for Biodiversity & Environment Research, University College London; b.collen@ucl.ac.uk; Breuer, Thomas; Global Conservation Program, Wildlife Conservation Society; tbreuer@wcs.org; Fa, John E.; Division of Biology and Conservation Ecology, School of Science and the Environment, Manchester Metropolitan University; Center for International Forestry Research; jfa949@gmail.com; Gill, David J. C.; Fauna & Flora International; david.gill@fauna-flora.org; Maisels, Fiona; Global Conservation Program, Wildlife Conservation Society; African Forest Ecology Group, School of Natural Sciences, University of Stirling; fmaisels@wcs.org; Schleicher, Judith; Department of Geography, University of Cambridge; js525@cam.ac.uk; Stokes, Emma J.; Global Conservation Program, Wildlife Conservation Society; estokes@wcs.org; Taylor, Gemma; Centre for Biodiversity & Environment Research, University College London; Institute of Zoology, Zoological Society of London; gemma.taylor@ioz.ac.uk. |
| Unsustainable exploitation of wild animals is one of the greatest threats to biodiversity and to millions of people depending on wild meat for food and income. The international conservation and development community has committed to implementing plans for sustainable use of natural resources and has requested development of monitoring systems of bushmeat offtake and trade. Although offtake monitoring systems and indicators for marine species are more developed, information on harvesting terrestrial species is limited. Building on approaches developed to monitor exploitation of fisheries and population trends, we have proposed two novel indicators for harvested terrestrial species: the mean body mass indicator (MBMI) assessing whether hunters are relying... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Africa; Bushmeat; Exploitation; Harvest; Indicator. |
| Ano: 2015 |
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| Kolpasсhikov, Leonid; Extreme North Agricultural Research Institute; kolpak46@norcom.ru; Makhailov, Vladimir; St. Petersburg Institute for Informatics and Automation; mwwcari@gmail.com; Russell, Don E.; CARMA, Yukon College; drussell@yukoncollege.yk.ca. |
| The Taimyr wild reindeer herd, i.e., caribou (Rangifer tarandus), is one of the most important wildlife resources in the Russian Far North and may constitute the largest migratory Rangifer herd in the world. Over the last 60 years the herd has undergone a recovery from low numbers in the 1940s, reaching high densities by 1970 that concerned wildlife managers and domestic husbandry herds, with an 11.7% annual growth rate. At that time an aggressive commercial harvest of the herd was implemented, and organized wolf control was initiated with the goal of stabilizing herd numbers and injecting needed economic activity into the region. These actions dampened the rate of increase throughout the 1970s and 1980s to a 3.0% annual growth rate. From 1991, after the... |
| Tipo: Peer-Reviewed Synthesis |
Palavras-chave: Harvest; Rangifer; Reindeer; Russia; Taimyr. |
| Ano: 2015 |
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| Johnson, Fred; U.S. Fish and Wildlife Service; fred_a_johnson@fws.gov; Williams, Ken; ; byron_ken_williams@nbs.gov. |
| Waterfowl harvest management in North America, for all its success, historically has had several shortcomings, including a lack of well-defined objectives, a failure to account for uncertain management outcomes, and inefficient use of harvest regulations to understand the effects of management. To address these and other concerns, the U.S. Fish and Wildlife Service began implementation of adaptive harvest management in 1995. Harvest policies are now developed using a Markov decision process in which there is an explicit accounting for uncontrolled environmental variation, partial controllability of harvest, and structural uncertainty in waterfowl population dynamics. Current policies are passively adaptive, in the sense that any reduction in structural... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Adaptive management; Harvest; Hunting regulations; Markov decision process; Migratory birds; Optimization; Uncertainty; Waterfowl.. |
| Ano: 1999 |
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| Martins,Murilo B.; Ruiz,Daniel. |
| ABSTRACT Operational conditions of mechanized harvesting can affect the quality of harvested sugarcane. Therefore, the aim of this study was to assess the influence of the displacement speed and cutting height on the quality of the raw material during the mechanized harvest of sugarcane. Vegetable losses were accounted for in the field by manual collection of the fractions left after harvest. Vegetable and mineral impurities were determined at the processing stage in the laboratory. Both the displacement speed and cutting height did not affect vegetable losses. However, the increase in vegetal impurities occurred at higher displacement speeds, whereas lower cutting heights resulted in higher amounts of mineral impurities. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural mechanization; Harvest; Quality; Saccharum spp. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300352 |
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| SILVA, S. E. L. da; GARCIA, T. B.. |
| Informacoes sobre o cultivo da graviola envolvendo: clima, solo, descricao botanica, variedades, propagacao, procedimentos para obtencao de mudas, preparo da area e plantio definitivo, tratos culturais (poda, capina, adubacao, doencas, pragas), floracao, frutificacao, producao, colheita, comercializacao, coeficiente tecnico, em Manaus-AM (Brasil). |
| Tipo: Folhetos |
Palavras-chave: Cultivo; Brasil; Amazonas; Manaus; Fertilizers application; Harvest; Economis; Adubação; Annona Muricata; Botânica; Comercialização; Clima; Colheita; Graviola; Poda; Solo; Botany; Climate; Pruning; Soil. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/668905 |
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| Registros recuperados: 85 | |
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