Dry-milling of corn attacked by southern leaf blight
1972
Brekke, O.L. | Peplinski, A.J. | Griffin, E.L. | Ellis, J.J.
Southern corn leaf blight (caused by Helminthorsporium maydis Nisik. et Miyake, Race T) did appreciable damage to the 1970 corn crop in the U.S. In addition to the reduction in crop yield, the damaged yellow dent hybrids tested usually were low in test weight and had excessive amounts of small, damaged, or moldy kernels. White corn lots had many of these same characteristics but to a lesser degree. Cleaning losses ran higher for blighted samples, and our cleaning procedure removed only some of the moldy kernels. No operating problems were encountered in laboratory-scale dry-milling tests. As test weight of the corn decreased, yield of the prime-product mix also decreased. Recoverable-oil yield varied with oil content of the corn. The prime products had acceptable fat contents but often had more dark specks and floury endosperm than products from unblighted corn. Presence of H. maydis usually was low in the prime products. No statistically significant differences in odor or flavor scores were noted between grits prepared from blighted corn and those from unblighted corn.
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