Cluster analysis helped define seven levels of soil enzyme activity ranging from very low (mostly in soils cropped with CT) to very high [mostly in uncultivated (UC) land and soils cropped with RT].
(Cluster analysis; helped define; seven levels of soil enzyme activity) (soil enzyme activity; ranging; from very low; mostly in soils cropped with CT) to very high [mostly in uncultivated (UC) land and soils) (soils; cropped; with CT) (soils; cropped; with RT)
Cluster analysis soil enzyme activity soils soils
helped define ranging cropped cropped
seven levels of soil enzyme activity
from very low mostly in soils cropped with CT) to very high [mostly in uncultivated (UC) land and soils
with CT
with RT