Journal of Food, Agriculture and Environment

The application of EM-treated dairy effluent on the flue-cured tobacco irrigation

Author(s):

You Xin Zhou ¹*, Shu Cong Zhen ¹, Ya Min Zhai ²

Recieved Date: 2012-09-20, Accepted Date: 2013-01-10

Abstract:

Effective utilization of waste resources was a hot topic in recent years. In this study, three experiments were designed to study the application of dairy effluent on the flue-cured tobacco irrigation, they were: 1) the enlarge cultivation of EM stoste, 2) the application of EM culture solution on the dairy effluent cleansing, 3) the application of EM-treated dairy effluent on tobacco irrigation. The results showed that after the enlarge cultivation, the pH of EM culture solution was on a trend of decreasing, and the microbe quantity increased rapidly, T6 (the volume ratio of EM stoste, accounted by 6%, 8% and 86%, respectively) was chosen as the optimum cultivation formula on account of the reasonable pH (4.22), microbe quantity (7.28×10⁷), and lower production cost; after EM culture solution applying to the dairy effluent for 12 days cultivation, the COD degradation and deodorization effect was satisfactory, the COD degradation rate of H1, H2, H3 was 33.92%, 30.99% and 27.78%, respectively, and at the 12^th day, the mixed liquor of H1 and H2 had sweet smell, H3 was generally odorless; applying the EM-treated effluent on the tobacco irrigation, the crop performance was desirable in comparison with the normal irrigation, H2 (the volume ratio of EM/effluent = 1/1500) was selected as the optimum EM/ effluent ratio, since the leaf area (42,220 cm²) and the yield (169.3 g) of single tobacco plant with H2 ratio were largest. 

Keywords:

EM, dairy effluent, tobacco, irrigation, projection pursuit, enlarge cultivation

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 1
Category: Environment
Pages: 960-964

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