The main concern is mineral nutrient becoming available to crops for uptake, definitely it is a complex function, but some simple relation or technical coefficient for deriving the net mineralisation, and also from this derived value to assess CO2 evolution.
regards
From the organic pool, the mineralization and immobilization decides the fate of nutrients becoming available for the plants, and is a complex function of physicio-chemical characters of soil, climatic conditions, type of biotic population and water availability. It also helps in optimization of the nutrients dose for target yield of a crop type, as well it also indirectly tells about the microbial activities and CO2 evolution rates from the soil.
We need to know rough assessment of net mineralization expressed in terms of mass per hectare basis.
regards
Nutrient mineralization studies are important for nutrients like N,P and S which are major nutrients whose supply from soil is substantial to crop nutrition .Mieralization studies are conducted with or without incorporation of organic manures or green manures and straws.Studies without organic input will indicate the potential nutrient supply from soil organic pool.The latter studies with incorporation of organic materials indicate the decomposability of material in soil,the time frame for nutrient release and its possible use in nutrient supply to crop or cropping system.Most of the mineralization studies are conducted on Nitrogen and limited studies on P and S.In case of P there is possibility of resorption of mineralized P in soil.In case of S the amount of mineralized S is small posing difficulties in estimation especially in tropical soils.There have been limited field studies and more laboratory studies..Dr.Kalra your idea is good but I have not come across compilation of information at one place. Attempts were made to use short time incubation studies to measure the amount of mineralised N in soil to predict crop response and also work out N recommendations.Nitrogen mineralized under anaerobic incubation for one week gave better prediction of N availability in soils in studies conducted in IARI,NewDelhi. Mineralization of nutrients under field conditions with and without organic resource addition may help in better prediction of nutrient supply from soil and organic material added and help to arrive at proper fertilizer nutrient recommendations.