When someone says a crop is combined, it's just an abbreviation for the crop having been harvested with a combine harvester.
There is no such thing as a "crash crop."
Food crop is something that is grown, for example corn.
Crop variety is the different crops that are grown in an area.
it is just a saying
I have no idea whatsoever. If you mean "crop rotation", please see the related link below.
A crop duster is an aircraft that is specially designed to apply pesticides from the air. The word crop duster can also mean the pilot who flies one these aircraft.
rice or opium, depends what you mean by "popular"
No all items combined
Put together
it mean all of the cusswords combined
it mean all of the cusswords combined
Yield is the amount of usable crop per plant, per acre or per 'measurement'.