Crossword Clue:

make a soil more fertile

Answer	Crossword Clue
COMEDOWNINPRICE	Make a more attractive offer
SOFTENTHEBRO	Make a dude more lenient?
DEEPEN	Make more navigable, as a channel

FATTEN	Make more substantial, in a way
FATTEN	Make more substantial, as a pig
SOUPUP	Make more awesome, as a car
RETYPE	Make more presentable, as a letter
SWEETEN	Make more tempting, as a deal
DERAT	Make more sanitary, in a way
LACE	Make more potent, in a way
SWEETEN	Make more attractive, as a deal

MOTORIZE	Make more powerful, as a wheelchair
SWEETEN	Make more attractive, in a way
INSOLE	It might make a shoe more comfortable
UPTHEANTE	Make things more interesting, in a way
TIEDYE	Make more hippie-ish, as a shirt
PLUMPBOB	Make Newhart a bit more well-rounded?
LOOSEN	Make a belt or collar more comfortable
TURNAROUND	How to make more or less a traffic circle

ANTE	Up the ... (make things more interesting, in a way)