Growth, nodulation and nitrogen fixation of cowpea in soils amended with composted tannery sludge

Revista Brasileira de Ciência do Solo

Joseany Andrade Santos¹  Luís Alfredo Pinheiro Leal Nunes²  Wanderley José De Melo¹  Marcia Barreto Do Vale Figueiredo¹  Rajeev Pratap Singh¹  Antônio Aécio Carvalho Bezerra²  Ademir Sérgio Ferreira De Araújo² 

[1] ,UFPI Faculty of Agronomy Teresina PI ,Brazil

关键词: waste;    soil texture;    composting;    heavy metal;    resíduo;    textura do solo;    compostagem;    metal pesado;   

DOI  :  10.1590/S0100-06832011000600003

来源: SciELO

【 摘 要 】

Tannery wastes generation is increasing every year and a suitable method for tannery sludge management is necessary in order to decrease this environmental problem. The composting is recognized as a suitable method for sludge recycling.. The effect of tannery sludge compost (TSC) rates on growth, nodulation and N fixation of cowpea was investigated. Sandy and clayey soils were amended with TSC at rates of 0, 7.5, 15, 30, and 60 t ha-1. The shoot dry weight of cowpea plants 45 days after emergence (DAE) was greater in the TSC-amended than in the unamended soil. In the sandy soil, nodule dry weight increased with TSC application 45 DAE. In the clayey soil, 45 DAE, nodule dry weight decreased with TSC amendment levels greater than 7.5 t ha-1 compared to the unamended control. The application of TSC increased N accumulation in the cowpea plants. The results suggest that cowpea responds differently to TSC depending on the amendment rate and initial soil type.

【 授权许可】

CC BY   
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