The amazing grape vine!
There isn't a "state crop". If there was one it could be grapes and raisins.
Yes grapes are a crop.
California produces grapes, artichokes and citrus fruit. It produces many other things as well however those are some of the primary exports from that state.
There are types of grapes that could be. There are wine grapes, table grapes and grapes that are dried for raisins. Each has different varieties for wine and table grapes. I live in a grape growing region, but only raisins and table grapes are produced here. Yes, I think you could classify them as a specialized crop.
Napa is a valley in California that is famous for its grapes.
Grapes.
The adjective in the sentence is large (describes the noun crop).The noun in the sentence is grapes (object of the preposition 'of').
Central Valley is a large valley in central California. The main crops include tomatoes, almonds, grapes, cotton, apricots, and asparagus.
The first crop in California was corn.
The southern part of California has most of the crop production. Around 200 varieties of crops grow in California which include grapes, almonds, strawberries, oranges ,walnuts, rice, corn, sugar beets and wheat.
The crop or harvest.
Arizona produces both grapes and commercially produced wine.