One new farming method of planting seeds deep in the ground was called c G r a ; farmers planted seeds deep in the soil where there was w - H i enough for growth.

The answer is "Dry-farming & moisture "

Explanation:

It is also referred to as Dryland Farming. Its irrigated cultivation plant cultures are generally or less 20 inches (50 centimeters) annually for regions with such low moisture.

One new method of cultivation called dry agriculture was to sow deep soil seed, and they had enough moisture to flourish. Even by the 1860s farms on the Plains began using steel plow and reaping equipment. The new devices allowed dry farming.