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Effect of pre-mixing bark amendment into water purification sludge before auto-composting on nitrogen and manganese content of the sludge and quality as material for potting media was investigated. Ea...
In Finland, the use of agricultural nitrogen (N) fertilizers has decreased since the beginning of the 1990抯 but there is not yet any clear response in observed water quality in the monitored agricultu...
Nitrogen (N) balance has been identified as a principal agri-environmental indicator. In addition to national N balances, calculation of N balances for different agricultural regions is also recommend...

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