Jorge has 60 * (1/3) = <<60*(1/3)=20>>20 acres of clay-rich soil.
He has 60 - 20 = <<60-20=40>>40 acres of good soil.
At 400 bushels per acre, his 40 acres of good soil produced 40 * 400 = <<400*40=16000>>16,000 bushels of corn.
If good soil produces 400 bushels per acre, clay-rich soil produces 400 / 2 = <<400/2=200>>200 bushels per acre.
At 200 bushels per acre, his 20 acres of clay-rich soil produced 20 * 200 = <<200*20=4000>>4,000 bushels of corn.
Altogether, his land produced 16,000 + 4,000 = <<16000+4000=20000>>20,000 bushels of corn.
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