Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/404102
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dc.contributor.authorVIELHAUER, K.pt_BR
dc.contributor.authorDENICH, M.pt_BR
dc.contributor.authorSÁ, T. D. de A.pt_BR
dc.contributor.authorKATO, O. R.pt_BR
dc.contributor.authorKATO, M. do S. A.pt_BR
dc.contributor.authorBRIENZA JUNIOR, S.pt_BR
dc.contributor.authorVLEK, P. L. G.pt_BR
dc.date.accessioned2011-04-10T11:11:11Zpt_BR
dc.date.available2011-04-10T11:11:11Zpt_BR
dc.date.created2003-09-15pt_BR
dc.date.issued2001pt_BR
dc.identifier.citationIn: CONFERENCE ON INTERNATIONAL AGRICULTURAL RESEARCH FOR DEVELOPMENT, 2001, Bonn. Deustscher tropentag 2001: proceeding. Bonn: University of Bonn, 2001.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/404102pt_BR
dc.descriptionBurning is a commonly used method to clear land for cropping, especially in regions with shifting cultivation. Due to population growth with the resulting intensified land use, it is mostly combined with a shortening of the fallow periods. Both burning and the shortened fallow period are the principal causes of declining soil fertility, and they are symptomatic for Eastern Amazonian agriculture. Based on the assumption that shifting cultivation will be maintained as the basic land-use system, these two adverse factors have to be improved in order to achieve reasonable and increased sustainable productivity. In the framework of a bilateral German-Brazilian research project, mechanized mulching technologies were developed to carry out fire-free land clearing by cutting and chopping the tree-rich fallow vegetation creating a mulch layer. Besides preserving organic matter and mineral nutrients, mulching permits land preparation at any time of the year, as, in contrast to burning, it does not depend on the dry season. Enriching the fallow vegetation with fast growing trees enhances the effect of mulching by increasing biomass: 25 t/ha/year as compared to natural fallow with 10 t/ha/year during the linear growth phase in the first 2 - 3 years. When putting these technologies into practice, the demand on differently behaving nutrient stocks in mulch-based systems has to be met. On the other hand, fire-free land preparation allows for flexible, alternative land utilization practices. Both factors lead to new crop-fallow scenarios where land use is intensified whilst the basic principles of shifting cultivation are maintained. In particular: 1) fallow biomass increase by enrichment reduces the fallow period from 4 - 6 years to 2 years, 2) slow nutrient release from the mulch layer allows highly demanding crops to be planted at the end of the cropping period low mineral fertilizer input is desired, 3) an additional cropping period becomes possible and reduces the land preparation time by half, 4) independent of the dry season crops can be planted taking climate and market demands into consideration, and 5) perennial cash crops can be integrated into the crop rotation.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectRegião Bragantinapt_BR
dc.subjectParápt_BR
dc.subjectBrasilpt_BR
dc.subjectTipitambapt_BR
dc.titleLand-use in a mulch-based farming system of small holders in the eastern Amazon.pt_BR
dc.typeArtigo em anais e proceedingspt_BR
dc.date.updated2018-01-19T11:11:11Zpt_BR
dc.subject.thesagroCultivo Migratóriopt_BR
dc.subject.thesagroPequeno Produtorpt_BR
dc.subject.thesagroUso da Terrapt_BR
dc.subject.thesagroSistema de Cultivopt_BR
dc.subject.nalthesaurusAmazoniapt_BR
dc.format.extent2Não paginado.pt_BR
riaa.ainfo.id404102pt_BR
riaa.ainfo.lastupdate2018-01-19 -02:00:00pt_BR
dc.contributor.institutionKONRAD VIELHAUER, UNIVERSITY OF BONNpt_BR
dc.contributor.institutionMANFRED DENICH, UNIVERSITY OF BONNeng
dc.contributor.institutionTATIANA DEANE DE ABREU SA, CPATUeng
dc.contributor.institutionOSVALDO RYOHEI KATO, CPATUeng
dc.contributor.institutionMARIA DO SOCORRO ANDRADE KATO, CPATUeng
dc.contributor.institutionSILVIO BRIENZA JUNIOR, CPATUeng
dc.contributor.institutionPAUL L. G. VLEK, UNIVERSITY OF BONN.eng
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