Metabolisable organic matter

Plant processes. In plants chemical substances enter, are transported, are absorbedinto organic matter andbioaccumulated, are metabolised and degraded. In agricultural areas, plant processes may therefore play a significant role in the fate of pesticides. 

ESI with simazine as an internal standard was applied. Metabolisation but no mineralization could be observed [389]. APCI and ESI-MS were applied to determine humic substances and dissolved organic matter (DOM) together with the fungicide anilazine (2,4-dichlor-6-(2-chloranilino)-l,3,5-triazine) which was... 

The following equation is typical of the type of relationship with digestible organic matter in dry matter (DOMD), which is used for calculating metabolisable energy ... 

The digestibility of the organic matter of these straws rarely exceeds 0.5 and the metabolisable energy value is about 7 MJ/kg DM or, in the case of winter barley cultivars, less than this. Of the ash fractions, silica is the main component and straws generally are poor sources of essential mineral elements, as can be seen from the results of a comparison between hays and barley straws shown in Table 20.5. 

The nutrient elements N, P and Si are metabolised between their dissolved inorganic forms, bound in dissolved organic matter or incorporated in organisms. The last are not detected by the standard nutrient determination procedures. However, if not deposited permanently by sedimentation they are decomposed by biochemical processes to their inorganic dissolved forms. They thus represent a nutrient pool which is only temporarily unavailable. 

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