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| Registros recuperados: 72 | |
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| Blumenthal, Dana M; University of Minnesota; dblumenthal@npa.ars.usda.gov; Jordan, Nicholas R; University of Minnesota; perr0128@tc.umn.edu; Svenson, Elizabeth L; University of Minnesota; esvenso1@swarthmore.edu. |
| The potential weed control benefits of ecological restoration are rarely cited and largely unstudied. Nevertheless, the nature of many restoration target communities, i.e., diverse, late-successional communities, suggests that restoration may control weeds and that the invasibility of plant communities may decrease with both diversity and successional age. Given the high cost of weed control in nonagricultural land, weed control benefits could be a strong incentive for restoration efforts. We examined the cumulative effects of restoration on weed populations 7 yr after tallgrass prairie restoration on a Minnesota sand plain. The numbers and biomass of volunteer weeds were compared among randomized plots with (1) no restoration, (2) prairie seed addition,... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Community invasibility; Invasion; Prairie; Restoration; Succession; Weed competition; Weed control; Weeds. |
| Ano: 2003 |
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| Oliveira,Fábio Luíz de; Guerra,José Guilherme M; Ribeiro,Raul de LD; Almeida,Dejair Lopes de; Silva,Edmilson Evangelista da; Urquiaga,Segundo; Espindola,José Antônio A. |
| An experiment was carried out in Magé, Rio de Janeiro State, Brazil, to evaluate the performance of taro (Colocasia esculenta) intercropped with sunn hemp (Crotalaria juncea), used as green manure. A randomized blocks design with four replicates was used and the soil of the field plots was classified as Haplic Gleysol. Treatments consisted of taro (1) intercropped with unpruned sunn hemp, (2) intercropped with sunn hemp cut at soil level, (3) intercropped with sunn hemp pruned at its mid-height, and (4) in monoculture. The taro was planted in double rows spaced by 1.0 m. The planting furrows had a space of 0.5 m, with rhizomes placed at every 3.0 m. The experimental plot consisted of four 3.0 m rows and the useful area corresponded to the five central... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria juncea; Colocasia esculenta; Organic farming; Leaf area; Leaf burning; Weed control. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362007000400013 |
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| CASTRO, F. de A.; CAMPOS, I. S.. |
| O controle eficiente e econômico de plantas daninhas é um dos principais fatores de alta produção em todas as culturas. Na cultura da seringueira, não será exagero afirmar que, em sua fase inicial é este o problema técnico mais difícil de resolver, muito especialmente na região Amazônica, onde as condições climáticas favorecem o desenvolvimento de uma flora infestante cuja composição é extraordinariamente variada, exigindo, por conseguinte, um maior número de capinas para manter o cultivo em boas condições de vegetação. Neste trabalho procurou-se estudar o efeito de diferentes doses de misturas de herbicidas, aplicados em pré e pós-emergência, objetivando maior eficiência no controle das plantas daninhas, na cultura da seringueira, nas condiç3es... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Ruber tree; Alto Purus; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Hevea spp; Control de malezas.; Seringueira; Erva daninha; Defensivo; Herbicida; Caucho.; Herbicides.; Weed control. |
| Ano: 1979 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492289 |
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| ANDRADE NETO, R. de C.; NOGUEIRA, S. R.; NEGREIROS, J. R. da S.; NASCIMENTO, G. C. do. |
| Práticas agrícolas, como escolha e manejo adequado do solo, utilização de cultivares adaptadas à região, adoção de espaçamentos corretos, além de calagem e adubação, irrigação, podas, polinizações manuais, controle fitossanitário de pragas, entre outras, podem levar o maracujazeiro a atingir altas produtividades. Desse modo, a Embrapa Acre coloca à disposição dos produtores, professores e extensionistas, de forma objetiva e concisa, uma importante publicação que aborda as práticas inerentes ao cultivo do maracujazeiro de forma sustentável e econômica. |
| Tipo: Livro técnico (INFOTECA-E) |
Palavras-chave: Producción de plántulas; Yellow passion fruit; Análisis económico; Uso de la tierra; Cultivares; Prácticas de cultivo vegetal; Huertos frutales; Encalado; Aplicación de fertilizantes; Irrigación; Polinización; Control de malezas; Plagas de plantas; Enfermedades y desórdenes de las plantas; Cosecha; Tratamiento postcosecha; Comercialización; Economía de mercado; Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental.; Maracujá; Passiflora Edulis; Sistema de Produção; Uso da Terra; Variedade; Pratica Cultural; Muda; Produção; Pomar; Calagem; Adubação; Irrigação; Poda; Polinização; Erva Daninha; Praga de Planta; Doença de Planta; Colheita; Mercado.; Comercialização; Pós-Colheita; Análise Econômica; Pruning; Weed control; Plant pests; Plant diseases and disorders; Harvesting; Postharvest treatment; Commercialization; Market economy.; Fertilizer application; Irrigation; Pollination; Economic analysis; Land use; Cultivars; Plant cultural practices; Seedling production; Orchards; Liming. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132364 |
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| Acciaresi,Horacio Abel; Chidichimo,Hugo Oscar. |
| The control and regrowth after nicosulfuron reduced rate treatment of Johnsongrass (Sorghum halepense L. Pers.) populations, from seven Argentinean locations, were evaluated in pot experiments to assess if differential performance could limit the design and implementation of integrated weed management programs. Populations from humid regions registered a higher sensibility to reduced rates of nicosulfuron than populations from subhumid regions. This effect was visualised in the values of regression coefficient of the non-linear models (relating fresh weight to nicosulfuron rate), and in the time needed to obtain a 50% reduction of photosynthesis rate and stomatal conductance. The least leaf CO2 exchange of subhumid populations could result in a lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Johnsongrass; Weed control; Weed regrowth. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000600003 |
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| Ferreira,Alexandre Cunha de Barcellos; Borin,Ana Luiza Dias Coelho; Bogiani,Julio Cesar; Lamas,Fernando Mendes. |
| Abstract: The objective of this work was to evaluate the dry matter yield of cover crops and their suppressive effects on weeds. The experiment was carried out during three years in a cerrado area of the state of Goiás, Brazil, and consisted of 16 treatments with fallow and cover crops cultivated in single cropping and intercropping. Fallow allowed high weed infestation. Cover crops affected the composition of weeds, which showed greater diversity in fallow, followed by the Pennisetum glaucum 'BRS 1501' and Cajanus cajan crops. In the average of the three experimental years, the highest dry matter yield was observed for the treatments Panicum maximum (10,857 kg ha-1), Urochloa brizantha 'Piatã' (11,437 kg ha-1), U. ruziziensis (9,463 kg ha-1), and U.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fallow; Species composition; Straw mulch; Weed control. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500566 |
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| Santos,Roberto Lorena de Barros; Spehar,Carlos Roberto; Vivaldi,Lucio. |
| The quinoa (Chenopodium quinoa Willd.) cultivation, one of the most promising in double cropping with soybeans or maize, depends on weed control. The objective of this work was to evaluate quinoa reaction to herbicide residue in a savannah soil. Six herbicide treatments, trifluralin, pendimethalin, clomazone, imazaquin, trifluralin + imazaquin and control, were applied, prior to summer cultivation of soybean, in a Dark-Red Latosol (typic Haplustox). Soybean cultivar BR 9 Savana was grown and soil samples were collected at 15, 38, 100, 145 and 206 days after treatment and stored at -5ºC. Bioassays were conducted in greenhouse, using quinoa, cultivar Q18. Imazaquin was the most harmful to quinoa seedlings, up to 206 days after application, followed by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chenopod; Weed control; Toxicity; Yields. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000600014 |
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| GONÇALVES NETTO,A.; NICOLAI,M.; CARVALHO,S.J.P.; MALARDO,M.R.; LÓPEZ-OVEJERO,R.F.; CHRISTOFFOLETI,P.J.. |
| ABSTRACT: The emergence of resistant biotypes of the Amaranthus palmeri species in cotton production areas of the state of Mato Grosso, Brazil, generated the need for correct identification of this species and information on viable herbicidal tools for their management. Thus, greenhouse experiments were conducted to evaluate the efficacy of alternative herbicides applied to A. palmeri in pre and post emergence. A randomized block design with four replications was used. The efficacy of herbicides applied in pre emergence was evaluate in two experiments, one in a clayey and other in a sandy soil; 9 herbicide treatments (8 with herbicide application and a control without application) were applied on each soil. Subsequently, two experiments with different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caruru; Weed control; Resistance; Phenology; Soil texture. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100193 |
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| Registros recuperados: 72 | |
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