Hello everybody,
I have at my disposal some production data (t dry matter ha-1) of wheat and alfalfa-crops under Mediterranean conditions.
I would like to estimate the energy output of the two crops but in the literature, I can only find data a little too dispersed in terms of MJ kg DM-1. I am just interested in the energetic output, I do not really care about the energetic input. While for the alfalfa the estimate includes the entire above-ground production, for the wheat I have both straw and grain data available.
Does anybody have suggestions on where to look? Meta-analysis or similar are more than welcome.
Moreover, I don't know if has anyone is familiar with "Feedpedia" which appears to be an INRA-led online project. https://www.feedipedia.org/
Thank you all
Hi Matteo,
This is indeed the method and references that were used in:
Article Diversified grain-based cropping systems provide long-term w...
and
https://www.nature.com/articles/nplants20178?proof5
Solid data is available in feedipedia concerning both wheat straw and grain (note that the proportion grain/total biomass is called the harvest index, this term could be of interest if ever you only had the name varieties and total wheat biomass, as variety/harvest index references can be found in the bibliography. They can range between 10 and 50%).
You might have find some interesting answers on this similar research gate thread:
https://www.researchgate.net/post/What-is-the-best-way-to-calculate-the-yield-of-an-entire-crop-rotation-including-different-kind-of-crops
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