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| Registros recuperados: 17 | |
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| WANDELLI, E. V.; SOUSA, S. G. A. de; MATOS, J. C. de S.; PERIN, R.; FERNANDES, E. C. M.; McKERROW, A.. |
| Avaliacao do potencial de contribuicao da conversao da biomassa da vegetacao secundaria em cinzas, pelo metodo de derruba e queima, em Manaus-AM (Brasil). Com base nos resltados, foi verificado que a biomassa da vegetacao secundaria em solos acidos e degradados, quando convertida em cinzas, nao aumenta o status nutricional do solo; o que sugere uso de praticas de manejo da biomassa da capoeira como alternativa para a derruba e queima. Por exemplo, que a biomassa seja utilizada como cobertura morta ou que as capoeiras sejam enriquecidas com especies de valor economico. |
| Tipo: Parte de livro |
Palavras-chave: Agrofloresta; Brasil; Amazonas; Manaus; Reclamation; Biomassa; Capoeira; Cobertura do Solo; Desmatamento; Deterioração do Solo; Essência Florestal; Floresta Tropical Úmida; Queimada; Recuperação do Solo; Reflorestamento; Agroforestry; Biomass; Burning; Deforestation; Environmental degradation; Fallow; Forest trees; Reforestation; Tropical rain forests. |
| Ano: 1996 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/669890 |
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| Klemick, Heather. |
| This study examines the drivers of land use in a shifting cultivation system with forest fallow. Forest fallow provides on-farm soil quality benefits, local hydrological regulation, and global public goods. An optimal control model demonstrates that farmers have an incentive to fallow less than is socially optimal, though market failures limiting crop production can have a countervailing effect by encouraging fallow. An econometric model estimated using data from the Brazilian Amazon suggests that fallowing does not result from internalization of local fallow services but instead is associated with poor market access and labor and liquidity constraints. |
| Tipo: Article |
Palavras-chave: Forest; Farms; Fallow; Ecosystem services; Land use; Spatial econometrics; Brazil; Credit; International Development; Land Economics/Use. |
| Ano: 2011 |
URL: http://purl.umn.edu/120270 |
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| LANZA, T. R.; MING, L. C.; HAVERROTH, M.; FERREIRA, A. B.. |
| Research suggests that the traditional native orchards materialize a highly complex productive system, which requires a wide input of local agricultural knowledge and practices for its maintenance. In addition, many plant resources depend directly on human management in these agroecosystems to persist. In this sense, this study has as main objective to provide the valorization and the preservation of this knowledge on the forms of use and management of the plants that have been, over time, accumulated, selected and used by countless generations. |
| Tipo: Parte de livro |
Palavras-chave: Yuca; Conhecimento tradicional; Terra Indígena Kaxinawá de Nova Olinda (TIKNO); Feijó (AC); Acre; Amazônia Ocidental; Bananos; Conocimiento tradicional; Barbecho; Maiz; Sistemas de cultivo.; Mandioca; Manihot esculenta; Banana; Musa paradisíaca; Milho; Zea mays; Amendoim; Arachis hypogaea; Sistema de cultivo; Pousio; Capoeira; Agricultura de Subsistência; Plátano.; Subsistence farming; Indigenous knowledge; Cropping systems; Fallow; Cassava; Bananas; Corn.. |
| Ano: 2017 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1071141 |
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| RAIMONDI,R.T.; CONSTANTIN,J.; MENDES,R.R.; OLIVEIRA JR.,R.S.; RIOS,F.A.. |
| ABSTRACT: Currently, sourgrass is one of the most important weeds in grain production areas in Brazil. The objective of this work was to evaluate the efficiency of associated systems composed by mowing and chemical control against clumped sourgrass. In the first experiment, different mowing heights (0, 5, 10, 15 and 20 cm), coupled with complementary applications of glyphosate + clethodim, were evaluated on sourgrass control. The second experiment was composed by programs starting with fallow mowing at different times, 50 (early), 35 (intermediate) and 20 (late) days before soybean sowing. After mowing, treatments were followed by herbicide applications according to the need until soybean harvest. The shorter the mowing height associated with herbicide... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digitaria insularis; Mechanical control; Soybean; Fallow. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100232 |
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| Ngobo, Martine; IITA; m.ngobo@cgiar.org; McDonald, Morag; University of Wales, Bangor; mamcd@bangor.ac.uk; Weise, Stephan; ; s.weise@cgiar.org. |
| In the humid forest regions of southern Cameroon in central Africa, sectoral and macroeconomic policy reforms introduced in the late 1980s have led to intensified land use, which in turn has resulted in, among other environmental consequences, shortened fallow systems dominated by the Asteraceae shrub, Chromolaena odorata (L.) King and Robinson, rather than by secondary forest species. A trial was established to determine the effect of shortened fallow duration and invasion by C. odorata on the weed flora in subsequent mixed food cropping systems. Plots were established in cleared 5- to 7-year-old fallow fields in which the vegetation was either dominated by C. odorata or not, and in which the dominant fallow vegetation in the previous... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: CVA; Cameroon; Chromolaena odorata; Fallow; Weeds. |
| Ano: 2004 |
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| Mochiutti, Silas; Queiroz, José Antonio Leite de; Melém Junior, Nagib Jorge. |
| This study aimed to evaluate the total and seasonal deposition of biomass, concentration and total amount of nutrient in litter of a taxi-branco stand and of a secondary forest, both 9 years old and established in area deforested by shifting cultivation. Thirty collectors 1.5 m2 were distributed (20 at taxi-branco and ten at secondary forest). Litter was collected monthly, oven-dried and analyzed for concentrations of N, P, K, Ca and Mg. The annual deposition of litter was 9646 kg/ha in taxi-branco stand and 4474 kg/ha in secondary forest. Litter production was greater in the lower precipitation period (August to November), comprising 74% and 56% of the annual production of the taxi-branco stand and secondary forest, respectively. Taxi-branco litter had... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litterfall; Fallow; Soil rehabilitation; Sclerolobium paniculatum; Brazilian Amazon. Liteira; Capoeira; Recuperação de solos; Amazônia.. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/201 |
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| DEBIASI, H.; FRANCHINI, J. C.; DIAS, W. P.; RAMOS JUNIOR, E. U.; BALBINOT JUNIOR, A. A.. |
| RESUMO: O objetivo deste trabalho foi avaliar o potencial de práticas culturais, adotadas na entressafra, para reduzir a população e os danos causados por Pratylenchus brachyurus em soja. Realizou-se um experimento em área naturalmente infestada, nas safras 2010/2011, 2011/2012 e 2012/2013, em Vera, MT. Os tratamentos foram: milheto (Pennisetum glaucum) 'ADR 7010' (2010/2011) e 'ADR 300' (nas entressafras seguintes); milho (Zea mays) 'BRS 1010' (2010/2011) e 'GNZ 2005' (nas entressafras seguintes); braquiária ruziziensis ( Urochloa ruziziensis); capim -marandu (U. brizantha 'Marandu'); crotalária (Crotalaria ochroleuca); C. juncea; C. spectabilis; C. spectabilis + milheto 'ADR 300' (de 2011/2012 em diante); alqueive mecânico (duas gradagens + herbicida);... |
| Tipo: Artigo de periódico |
Palavras-chave: Pratylenchus bachyurus.; Soja; Sistema de cultivo; Pousio; Prática cultural; Nematóide; Planta de cobertura; Pratylenchus Brachyurus.; Soybeans; Fallow; Plant cultural practices; Nematoda; Cover crops.. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1058265 |
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| Sohail-Ijaz,Shahzada; Ali,Safdar. |
| Clean fallowing has been criticized in the recent past due to the fact that it causes accelerated soil erosion, emission of CO2 to the atmosphere and reduction in farm income. In an effort to reduce fallowing in Pothwar, Pakistan, field experiments were carried out from 2005 through 2008 at three locations (Rawalpindi, Chakwal and Fateh Jang). The experimental design was split-plot and treatments were applied as follows: conventional cultivator, moldboard plow and minimum tillage in main plots; fallow, legume (mungbean, Vigna radiata) and mulch of wheat straw were used in sub plots. Wheat (Triticum aestivum) was planted in all the subplots during winter. All the treatment plots had equivalent volumetric water content at wheat planting. Consequently, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fallow; Tillage; Mungbean; Soil water content; Wheat; Gross margins. |
| Ano: 2011 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952011000100005 |
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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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| Registros recuperados: 17 | |
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