Improvement 3: Improvement of the seed cultivation process
The seed cultivation processes in AFP 3.0 and 4.0 versions are basically a copy of the cultivation process, with a correction factor for the yield. Previously, the correction factor, or yield ratio, was set at 80% of the yield used for all cultivation processes. Hereby is assumed that the seed cultivations have more environmental burden than the cultivation itself. This approach works well for products that are similar to the seed material, such as most cereals (wheat, barley, etc.) and forage legumes (soybean, lupine, etc.), but it is not realistic for products like vegetables. To solve this, the next update of Agri-footprint will use specific correction factors for various product groups based on data from Feedprint
. Different yield ratios are used for cereals, maize, oil seeds, grasses, forage legumes, grain legumes and sugar beet. Yield ratios for vegetables are assumed to be similar to sugar beets.