Simplify the following text for a Grade 12 native English-speaking person.
Original: Introducing a new cultivar may mean change in the planting rate , adjusting the planter , harvester , dryer , cleaner , sheller , and method of marketing .
Simplified: Introducing a new variety may mean change in the planting rate , adjusting the planter , harvester , dryer , cleaner , sheller , and method of marketing .