Thomazini, André ; Azevedo, Humberto Carlos Almeida and Mendonça, Eduardo Sá (2012) Perdas de solo, água e nutrientes em sistemas conservacionistas e convencionais de café no sul do estado do Espírito Santo. [Losses of soil, water and nutrients in conservation and conventional coffee systems in the southern state of Espirito Santo.] Revista Brasileira de Agroecologia, 7 (2), pp. 150-159.
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Document available online at: http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia/article/view/10678/pdf_1
Summary
The southern region Espirito Santo state is characterized by topographic strong wavy, with highly weathered soils and low fertility. Most of the land of family farms requires intensive soil use and, consequently, promotes soil loss, water and nutrients by erosion. Coffee conilon and grazing are the main systems of food production in the region. The aim of this study was to estimate, during the rainy season, soil loss and nutrient of areas under coffee cultivation systems under conservation (and agroforestry with management of soil cover) and conventional tillage (non-coverage soil). Collectors of soil and water were installed in 6 observation units, being 2 in conventional systems, 3 in conservationists systems and 1 in native forest that was used as a reference. Meteorological data were collected at the rainy season of 2009/2010. The soil and water losses estimated for the period, were higher (98 and 68%) in the conventional systems compared to conservation systems. Potassium was the nutrient that had higher losses in the systems (from 0.17 to 33 g/ha, respectively).
Summary translation
A região sul do estado do Espírito Santo se caracteriza pela topografia forte ondulada, com solos altamente intemperizados e de baixa fertilidade. A ocupação da terra de agricultura familiar, exige uso intensivo do solo e, conseqüentemente, promove perdas de solo, água e nutrientes por erosão. O café conilon e a pastagem são os principais sistemas de produção de alimentos da região. O objetivo deste estudo foi estimar, durante a estação chuvosa, perdas de solo e nutrientes em áreas sob o cultivo do café sob sistemas conservacionistas (agroflorestais e com manejo da cobertura do solo) e convencionais (sem cobertura do solo). Foram instalados coletores de solo e água em 5 unidades de observação, sendo 2 em sistemas convencionais, 3 em sistemas conservacionistas e uma mata nativa que foi usada como referência de um estado de equilíbrio . Foram coletados dados meteorológicos na estação chuvosa de 2009/2010. As perdas totais de solo, estimadas para o período, foram maiores (98,34 %) nos sistemas convencionais em comparação aos sistemas conservacionistas. O potássio foi o nutriente que teve maiores perdas nos sistemas (0,17 a 33 g/ha, respectivamente).
| EPrint Type: | Journal paper |
|---|---|
| Keywords: | Degradação do solo, Erosão hídrica, Perda de nutrientes, sistema agroflorestal, Agricultura familiar, Espírito Santo, Brasil. Soil degradation, Erosion, Nutrient loss, Agroforestry system, Family farming, Espírito Santo, Brazil. |
| Agrovoc keywords: | Language Value URI English Soil degradation http://aims.fao.org/aos/agrovoc/c_7168 English Erosion http://aims.fao.org/aos/agrovoc/c_2651 English agroforestry systems http://aims.fao.org/aos/agrovoc/c_330982 English Family farms http://aims.fao.org/aos/agrovoc/c_2787 English Coffee http://aims.fao.org/aos/agrovoc/c_1731 English Coffea http://aims.fao.org/aos/agrovoc/c_1720 |
| Subjects: | Farming Systems Soil Environmental aspects |
| Research affiliation: | Brazil > Other organizations |
| ISSN: | 1980-9735 |
| Related Links: | http://www.aba-agroecologia.org.br/ojs2/index.php/rbagroecologia |
| Deposited By: | Pinto, Gabriela Franco |
| ID Code: | 22945 |
| Deposited On: | 03 Sep 2013 15:25 |
| Last Modified: | 03 Sep 2013 15:25 |
| Document Language: | Portuguese/Portugues |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
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