Perennial grass and grassland legumes are productive, multipurpose and adapted to various conditions. 

• Grass absorbs more CO2 than any other agricultural crop due to a longer growing season that lasts from early spring to late autumn, and all year round in climate zones with mild winters.
• Effective absorption of solar energy through the long growing season allows for more CO2 sequestration than other crops, such as cereals and maize that are harvested during late summer and leave the ground uncovered.
• Roots store carbon, reduce the N2O emission and prevent nitrogen leaching to the ground water. 
• Grass pastures accumulate organic matter and soil nitrogen, and improve soil structure.
• Grass-clover pastures can fix 300-500 kg N per ha from the air using rhizobium microbes meaning less need for mineral fertiliser. The aftermath effect on the following crop is >100 kg N per ha.

• Ground research shows carbon sequestration of up to 1 t C/ha in 0-25 cm and 0,6 t C/ha in 25-50 cm soil depth under perennial grass (corresponds to 3,6 t CO2/ha). Carbon is also stored in the crown and above ground plant parts.

• The CO2 emission is reduced, when soil from perennial crops is undisturbed.
• High quality forage mixtures are mores disease resistant, secure a more efficient land use and the highest forage production pr. ha. 
• Grass varieties with 1% increased fiber digestibility increase milk production with 0.25 l/day pr. cow. More milk and meat is produced by fewer cows and less emission from the digestion process. 

• Pastures for grazing or silage production have little need for herbicides, fungicides and insecticides. Due to their fast growth rate, grasses usually out-compete weeds, and because grass consists of similar, but not identical genetics, they are less prone to fungal attack.
• Against insects, grass can have its own natural weapon; a fungus, called an ‘endophyte’. The endophyte lives in symbiosis with the grass and produce insect repellent compounds.
• Clover-grass pastures can symbiotically fix 300-500 kg N per ha from atmospheric nitrogen. This means less need for fertilisers. Agricultural inputs, nitrogen in particular, consume energy to produce and thereby C02. 1% of global CO2 emissions are from the agrochemical synthesis of nitrogen (Hauber-Bosch process) used as fertiliser.
• Grassland can help to reduce erosion and delay or avoid flooding. 

• Pastures with clovers, alfalfa and herbs like plantain, provide flowers and feed for honey bees, bumble bees, butterflies and other insects.
• These areas have a minimal requirement for pesticides and therefore also a minimal impact on insect communities.
• Undisturbed grassland improves soil fertility, more earthworms, improved nutrient availability, drainage and soil structure.

• Bio-refined protein from grass, clover and alfalfa can be locally produced, which enhances the self-sufficiency of protein and reduces CO2 emissions from transport.
• Bio-refined protein can improve business opportunities in rural areas and couple animal and plant productions at territory level.
• Home-grown protein reduces the dependency of mineral N fertilisers.
• Reinforce protein autonomy in animal productions by exploitation of grassland.