Decomposition and nutrient release of leguminous plants in coffee agroforestry systems
Leguminous plants used as green manure are an important nutrient source for coffee plantations, especially for soils with low nutrient levels. Field experiments were conducted in the Zona da Mata of Minas Gerais State, Brazil to evaluate the decomposition and nutrient release rates of four leguminou...
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| Format: | Article |
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Sociedade Brasileira de Ciência do Solo
2011-02-01
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| Series: | Revista Brasileira de Ciência do Solo |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000100013&lng=en&tlng=en |
| _version_ | 1818608146021613568 |
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| author | Eduardo da Silva Matos Eduardo de Sá Mendonça Irene Maria Cardoso Paulo César de Lima Dirk Freese |
| author_facet | Eduardo da Silva Matos Eduardo de Sá Mendonça Irene Maria Cardoso Paulo César de Lima Dirk Freese |
| author_sort | Eduardo da Silva Matos |
| collection | DOAJ |
| description | Leguminous plants used as green manure are an important nutrient source for coffee plantations, especially for soils with low nutrient levels. Field experiments were conducted in the Zona da Mata of Minas Gerais State, Brazil to evaluate the decomposition and nutrient release rates of four leguminous species used as green manures (Arachis pintoi, Calopogonium mucunoides, Stizolobium aterrimum and Stylosanthes guianensis) in a coffee agroforestry system under two different climate conditions. The initial N contents in plant residues varied from 25.7 to 37.0 g kg-1 and P from 2.4 to 3.0 g kg-1. The lignin/N, lignin/polyphenol and (lignin+polyphenol)/N ratios were low in all residues studied. Mass loss rates were highest in the first 15 days, when 25 % of the residues were decomposed. From 15 to 30 days, the decomposition rate decreased on both farms. On the farm in Pedra Dourada (PD), the decomposition constant k increased in the order C. mucunoides < S. aterrimum < S. guianensis < A. pintoi. On the farm in Araponga (ARA), there was no difference in the decomposition rate among leguminous plants. The N release rates varied from 0.0036 to 0.0096 d-1. Around 32 % of the total N content in the plant material was released in the first 15 days. In ARA, the N concentration in the S. aterrimum residues was always significantly higher than in the other residues. At the end of 360 days, the N released was 78 % in ARA and 89 % in PD of the initial content. Phosphorus was the most rapidly released nutrient (k values from 0.0165 to 0.0394 d-1). Residue decomposition and nutrient release did not correlate with initial residue chemistry and biochemistry, but differences in climatic conditions between the two study sites modified the decomposition rate constants. |
| first_indexed | 2024-12-16T14:38:00Z |
| format | Article |
| id | doaj.art-0fdfd2ee312b453d8dee6169a60fa3e9 |
| institution | Directory Open Access Journal |
| issn | 1806-9657 |
| language | English |
| last_indexed | 2024-12-16T14:38:00Z |
| publishDate | 2011-02-01 |
| publisher | Sociedade Brasileira de Ciência do Solo |
| record_format | Article |
| series | Revista Brasileira de Ciência do Solo |
| spelling | doaj.art-0fdfd2ee312b453d8dee6169a60fa3e92022-12-21T22:28:03ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-96572011-02-0135114114910.1590/S0100-06832011000100013S0100-06832011000100013Decomposition and nutrient release of leguminous plants in coffee agroforestry systemsEduardo da Silva Matos0Eduardo de Sá Mendonça1Irene Maria Cardoso2Paulo César de Lima3Dirk Freese4Embrapa AgrosilvopastoralFederal University of Espírito SantoFederal University of ViçosaAgriculture Research Institute of Minas GeraisBrandenburgische Technische UniversitätLeguminous plants used as green manure are an important nutrient source for coffee plantations, especially for soils with low nutrient levels. Field experiments were conducted in the Zona da Mata of Minas Gerais State, Brazil to evaluate the decomposition and nutrient release rates of four leguminous species used as green manures (Arachis pintoi, Calopogonium mucunoides, Stizolobium aterrimum and Stylosanthes guianensis) in a coffee agroforestry system under two different climate conditions. The initial N contents in plant residues varied from 25.7 to 37.0 g kg-1 and P from 2.4 to 3.0 g kg-1. The lignin/N, lignin/polyphenol and (lignin+polyphenol)/N ratios were low in all residues studied. Mass loss rates were highest in the first 15 days, when 25 % of the residues were decomposed. From 15 to 30 days, the decomposition rate decreased on both farms. On the farm in Pedra Dourada (PD), the decomposition constant k increased in the order C. mucunoides < S. aterrimum < S. guianensis < A. pintoi. On the farm in Araponga (ARA), there was no difference in the decomposition rate among leguminous plants. The N release rates varied from 0.0036 to 0.0096 d-1. Around 32 % of the total N content in the plant material was released in the first 15 days. In ARA, the N concentration in the S. aterrimum residues was always significantly higher than in the other residues. At the end of 360 days, the N released was 78 % in ARA and 89 % in PD of the initial content. Phosphorus was the most rapidly released nutrient (k values from 0.0165 to 0.0394 d-1). Residue decomposition and nutrient release did not correlate with initial residue chemistry and biochemistry, but differences in climatic conditions between the two study sites modified the decomposition rate constants.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000100013&lng=en&tlng=enciclagem de nutrientesagroecologiaqualidade do resíduo vegetal |
| spellingShingle | Eduardo da Silva Matos Eduardo de Sá Mendonça Irene Maria Cardoso Paulo César de Lima Dirk Freese Decomposition and nutrient release of leguminous plants in coffee agroforestry systems Revista Brasileira de Ciência do Solo ciclagem de nutrientes agroecologia qualidade do resíduo vegetal |
| title | Decomposition and nutrient release of leguminous plants in coffee agroforestry systems |
| title_full | Decomposition and nutrient release of leguminous plants in coffee agroforestry systems |
| title_fullStr | Decomposition and nutrient release of leguminous plants in coffee agroforestry systems |
| title_full_unstemmed | Decomposition and nutrient release of leguminous plants in coffee agroforestry systems |
| title_short | Decomposition and nutrient release of leguminous plants in coffee agroforestry systems |
| title_sort | decomposition and nutrient release of leguminous plants in coffee agroforestry systems |
| topic | ciclagem de nutrientes agroecologia qualidade do resíduo vegetal |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000100013&lng=en&tlng=en |
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