DELIVERANCE IN AUGUST for Steve Miller Massive machines on muddy, rubber tracks will bring those who deploy them bumper crops. Twenty-five ton potatoes fill their sacks from every acre that the tractor tops. Load on the run, the digger never stops. Farmland left fallow this year wasn’t tilled last fall when our September was so wet. Now two fat cobs on every stalk have filled their twenty rows, and now the soybeans set third blossoms, so they’re not done growing yet. Last spring when snowmelt flooded all the fields farmers whom I befriend prepared to mourn a belt-tightening year of…