This piece of land is the most fertile and yields a good harvest each year.

Solution (By Examveda Team)

Fertile : (of soil or land) producing or capable of producing abundant vegetation or crops.
Startling : very surprising, astonishing, or remarkable.
Sterile : (of land or soil) too poor in quality to produce crops.
Worthless : having no real value or use.
Futile : incapable of producing any useful result; pointless.

Antonym of Fertile is Sterile