Available nitrogen definition
Available nitrogen means the nitrogen present in the septage in the NH3−N form and the nitrogen that is mineralized from the organic nitrogen in the septage, both of which can then be absorbed and assimilated by growing plants in the cropping year.
Available nitrogen means the nitrogen which is present in the sludge in the NH3−N form and the nitrogen that is mineral- ized from the organic nitrogen in the sludge; both of which can then be absorbed and assimilated by growing plants in the crop- ping year.
Available nitrogen means the nitrogen present in the industrial by-product which is available for the plant to use during the cropping year.