GUIMARAES, R. dos R.

SOUSA, G. F. de

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Resumes ...1998 PC-PP-2015.00037111111111111111111111111111111111111111111111111111111111111111111111111111 e ~CPAA-28459-1 AISS-IBG-SICS <r>3003716e CONGRES MONDIAL DE SCIENCE DU SOL16th WORLD CONGRESS OF SOIL SCIENCE16. BODENKUNDLlCHER WEL TKONGRESS16° CONGRESOMUNDIAL DE LA ClENClA DEL SUELOMontpellierFrance20 - 26 aoút 199820 - 26 August 1998RÉSUMÉSSUMMARIESVolume ISymposiums - Symposia01 à - to 24Le CorumPalais des Conqrês - Convention Center~~- de Charles de GaulleIntegrated agroforestry system for small migrant farmers ofshifting cultivation, Presidente Figueiredo-AM., BrazilSystemes agroforestiers intégrés pour une agriculture itinérante parde petits fermiers, Présidente Figueiredo-AM, BrésilScientiflc registration n": 2247Symposium n": 14Presentation ; posterSOUSA Gladys F. de, GUIMARÃES Rosangela dos ReIsEMBRAPNCPAA Rodovia AM-OIO, km 29. Caixa Postal 319. 69011-970, Manaus, Amazonas. BraziLThe low nutrient content on major Amazonian humid ecosystems soils affects considerably lhe use aragriculture practices in lhe region. With lhe objective to develop altematives of land use for migrant snullfarmers of shifting cultivation, two agroforestry systems proposals were conducted in tWQ smallholdings iPresidente Figueiredo, Amazonas State. The systems consisted of crops arrangernents in which annuals:manioc (Monihot esculenta L.), cowpea beans (Vigna unguiculata L.) and rice (Oriza saliva L) varictiGwere interplanted in sequential arrangements in lhe rows of perennial plants: cupuaçu (Theobromagrandiflorum (Willd ex Spreng.) Schum), pupunha (Bactrís gasipaes Kunthr. ingá (Inga ec/ulis Mart.); ardsemi-perennial: banana (Musa sp). ln systern I the sequenee was manioc, eowpea and manioc, while insystem 11 was riee, eowpea, manioc and eowpea Three fertilizer treatments were tested I. NPK + OrganicMatter; 2. P and; 3. P+ leguminous ground eover erop. The results suggested that the produetivity of lhearea with lhe levels of fertilizers used have been maintained tonger than the traditional slash and burnsystems. ln three years of eontinuous agroforestry systems 10 an Oxisol and eonsidering the land use histOl'jup to tive annual erops were harvested and yielded a total of over 30 tlha manioc roots, 3.5 tlha ofrice ardeowpea grain and 5.3 tlha banana fruit during 38 month of eontiouous erop without applieation of lime insoils with pH 4.9 in average and 4001Ó AI saturation. ln traditicnal agrieulture system the possible yieldwould be one manioc erop, averaging 6 tlha. The soil samples analysis reinforeed the low natural jgrtility oflhe soils and lhe buming of above ground biomass of two years old seeondary fores! improved STrghtly tIttopsoil nutrient contem. However, lhe inerease did not promote fruit trees developrnent and annual CWfSgrain produetion. Fertilizer applieation had a positive effect on crops yieíd and topsoil nutrient content lheresults indieated the low-input agroforestry systerns although no! eonsidered stable yet but it looks a goo.lstrategy to a more pennanent land use system.Keywords : Agroforestry systems, shifting eu1tivation, soil fertility, Amazon RegionMots clés : systemes agroforestiers, agriculture itinérante, fertilitê du sol, Amazonie

Integrated agroforestry system for small migrant farmers of shifting cultivation, Presidente Figueiredo-AM, Brazil.

http://www.alice.cnptia.embrapa.br/bitstream/doc/1115951/1/Integratedagroforestrysystemforsmall...pdf

Integrated agroforestry system for small migrant farmers of shifting cultivation, Presidente Figueiredo-AM, Brazil.

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