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Field crops
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274
Crop science
31
Corn
15
Farms
15
Farmers
13
Agriculturists
10
Tobacco
10
Agriculture
9
Harvesting
7
Agricultural education
6
Cotton
6
Farm equipment
6
Plants
6
Agricultural extension workers
5
Agricultural productivity
5
Tractors
5
Agricultural extension work
4
Agricultural machinery
4
Crops
4
Meetings
4