Dave used a 3- or 4-year rotation to break disease life cycles and planted resistant varieties even before switching to continuous direct seeding.
(Dave; planted; resistant varieties; T:even before switching to continuous direct seeding) (Dave; used; a 3- or 4-year rotation; to break disease life cycles) Context(Dave used,List([0, 9))):(Dave; used a 3- or 4-year rotation to break; disease life cycles)
Dave used,List([0, 9))
Dave Dave Dave
planted used used a 3- or 4-year rotation to break
resistant varieties T:even before switching to continuous direct seeding
a 3- or 4-year rotation to break disease life cycles
disease life cycles