1
Q
what are the 4 components and %
A
25% water, 25% air, 45% mineral, 5% organic matter
2
Q
reasons for organic matter in soils
A
plant nutrients
reduces risk of compaction
reduced erosion risk / flooding / drought
carbon sequestration
3
Q
how to reduce the decline of organic matter
A
direct drilling
min tillage
chopping straw
cover crops
slurry / manure
rotational grass leys
4
Q
A
