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Microbial diversity, nitrogen loss and grass production after addition of Effective Micro-organisms^(R) (EM) to slurry manure [An article from: Applied Soil Ecology]
Book Details
PublisherElsevier
ISBN / ASINB000RR9RHS
ISBN-13978B000RR9RH5
AvailabilityAvailable for download now
Sales Rank11,523,202
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Applied Soil Ecology, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
In this study, we used a DNA fingerprinting technique (PCR-DGGE) to investigate if bacteria present in an activated EM suspension (EM-A) were able to maintain or reach significant relative abundances after addition to slurry manure. We also investigated effects of the addition of EM-A to slurry manure on nitrogen losses from the manure and grass biomass production after application of the manure as organic fertilizer. EM^(R) and Agri-mest^(R) were tested in a factorial set-up so that the factors could be distinguished. Effective Organisms (EM) is a mixture of several effective, disease-depressing micro-organisms. Agri-mest contains energized minerals, which will influence biochemical processes occurring in the manure. Different EM-stocks, and EM-Active suspensions prepared by different users showed large variation in bacterial community structure and, thus, low reproducibility. Through the addition of Agri-mest to the slurry manure, loss of inorganic nitrogen from the slurry manure appeared to be reduced. Moreover, after application of such Agri-mest slurry as an organic fertilizer, nitrogen uptake by grass was reduced. Addition of EM-A had no measurable effects on the bacterial diversity and the chemical composition of the slurry manure. In a pot experiment, also no effects of EM on nitrogen uptake and grass biomass production were recorded.
Description:
In this study, we used a DNA fingerprinting technique (PCR-DGGE) to investigate if bacteria present in an activated EM suspension (EM-A) were able to maintain or reach significant relative abundances after addition to slurry manure. We also investigated effects of the addition of EM-A to slurry manure on nitrogen losses from the manure and grass biomass production after application of the manure as organic fertilizer. EM^(R) and Agri-mest^(R) were tested in a factorial set-up so that the factors could be distinguished. Effective Organisms (EM) is a mixture of several effective, disease-depressing micro-organisms. Agri-mest contains energized minerals, which will influence biochemical processes occurring in the manure. Different EM-stocks, and EM-Active suspensions prepared by different users showed large variation in bacterial community structure and, thus, low reproducibility. Through the addition of Agri-mest to the slurry manure, loss of inorganic nitrogen from the slurry manure appeared to be reduced. Moreover, after application of such Agri-mest slurry as an organic fertilizer, nitrogen uptake by grass was reduced. Addition of EM-A had no measurable effects on the bacterial diversity and the chemical composition of the slurry manure. In a pot experiment, also no effects of EM on nitrogen uptake and grass biomass production were recorded.
