Subjects: *CROP yields & the environment; *PLANT variety testing; *CROP genetics
تفاصيل العنوان
Subjects: *COTTON; *DOUBLE cropping; *RAINFALL
Subjects: *DRAINAGE; *TILES; *SUBSURFACE drainageTENNESSEE
Subjects: *WORLD records; *CORN; *CONTESTS
Subjects: *BURLEY tobacco; *BUSINESS & weather; *SOIL compaction
Subjects: *FRAGIPANS; *CORN yields; *SOYBEAN yieldKENTUCKY
Subjects: *SEASONAL variations in corn; *CORN drying; *COTTON farmersUNITED States
