> as lemmas
pre-emergence
pre-emergence adj. and adv. 
/ˌpriiˈmərdʒəns/ (a) adj. occurring, performed, or applied before the emergence of seedlings from the soil; (b) adv. before the emergence of seedlings from the soil.
Brit. /ˌpriːᵻˈməːdʒ(ə)ns/
, /ˌpriːᵻˈməːdʒ(ə)ns/U.S. /ˌpriəˈmərdʒəns/
, /ˌpriəˈmərdʒəns//ˌpriiˈmərdʒəns/ΘΚΠ
the world > food and drink > farming > cultivation or tillage > cultivation of plants or crops > [adjective] > other systems of growing crops
sharecrop1871
two-field1907
sharecropped1933
pre-emergence1939
pre-emergent1942
monocrop1953
1939 R. L. Watts Veg. Growing Business iii. 25 Zinc oxide dust often is advantageous as protection against pre-emergence damping-off.
1955 Sci. News Let. 2 July 10/3 Pre-emergence control is done after seeds have been sown, but before a desired plant pushes up through the ground.
1971 Arable Farmer Feb. 15/3 Tri-allate applied pre-emergence to wheat to control wild oat.
1993 Zeneca (company brochure) 9 Major new products include..Acetochlor, a pre-emergence maize herbicide.
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as lemmas