| Registro completo |
| Provedor de dados: |
65
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| País: |
Brazil
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| Título: |
Mineralization and efficiency index of nitrogen in cattle manure fertilizers on the soil
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| Autores: |
Eckhardt,Daniel Pazzini
Redin,Marciel
Jacques,Rodrigo Josemar Seminoti
Lorensini,Felipe
Santos,Marcos Leandro dos
Weiler,Douglas Adams
Antoniolli,Zaida Inês
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| Data: |
2016-03-01
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| Ano: |
2016
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| Palavras-chave: |
Vermicompost
Organic fertilizer
Cattle manure
Composting
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| Resumo: |
ABSTRACT: This research aimed to evaluate the mineralization of nitrogen (N) and to define the efficiency index (EI) of N after the addition of organic fertilizers based on cattle manure on the soil under laboratory conditions. A completely randomized statistical design with four replicates was used. The treatments were set as follows: T1) Soil (control); T2) Soil + vermicompost of cattle manure (CMV); T3) Soil + cattle manure and straw compost (CMS); and T4) Soil + cattle manure (CM). Experimental units were constituted by acrylic flasks with 5 x 5cm (height x diameter). Each flask was added with 135g of wet soil and 2.20, 2.45 and 2.27g of CMV, CMS and CM, respectively. Treatments were incubated at 25°C and the amount of mineral N from the soil (N-NH4+ and N-NO2- + N-NO3-) was determined at the beginning of the experiment and after 7, 14, 28, 56 and 112 days of incubation. The highest concentration of N-NO2- + N-NO3- in the soil were observed within the CMS treatment. The EI of N was of 27, 23 and 22% for CMS, CMV and CM, respectively. The mineralization of N from organic fertilizers based on cattle manure occurs on its vast majority within the first 28 days after its addition to the soil. The EI of N from the organic fertilizers based of cattle manure was higher for CMS>CMV>CM and achieved only 80% of what expected for organic fertilizers derived from cattle manure.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300472
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| Editor: |
Universidade Federal de Santa Maria
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| Relação: |
10.1590/0103-8478cr20140958
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| Formato: |
text/html
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| Fonte: |
Ciência Rural v.46 n.3 2016
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| Direitos: |
info:eu-repo/semantics/openAccess
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