Nodules of Aeschynomene histrix
Finger millet (Eleusine coracana) is an annual crop that can be used for the grain (high nutritive value higher than rice, maize, sorghum), fodder source and as a cover/relay crop. Strong fibrous rooting systems, high decompaction ability, symbiosis with free-N fixing bacteria.
Seed of sunnhemp (Crotalaria juncea) is produced on the Bos Khnor Station (Chamcarleu district, Kampong Cham province). Sunnhemp is sown in association with others cover/relay crops as millet, sorghum, finger millet (Eleusine coracana) among others. As a legume, the sunnhemp develops a mutualistic relationship with rhizobacteria. This specie is also useful to decrease the abundance of plant-parasitic nematode and to decompact the soil through a strong and deep tap root system.
Millet (Pennisetum typhoides) and sorghum are used as relay crops before or after main upland crops (i.e., maize, soybean, rice). They bring a range of beneficial functions and contribute to the improvement of the soil fertility. Both species produce high amount of biomass and have strong ability to recycle high amount of potassium. This nutrient will be brought back into the soil during the decomposition and mineralization process.
Sunnhemp (Crotalaria juncea) is a short-term bio-pump cover crop prior the main crops. It is used for to improve soil macro-porosity, to suppress plant-parasitic nematode, to fix N, among others functions.