There are 64/8 = <<64/8=8>>8 rows of bean seedlings.
There are 84/7 = <<84/7=12>>12 rows of pumpkin seedlings.
There are 48/6 = <<48/6=8>>8 rows of radishes.
Thus, there are a total of 8 + 12 + 8 = <<8+12+8=28>>28 rows of vegetables.
Therefore, the farmer had 28/2 = <<28/2=14>>14 plant beds.
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