CARBON-DIOXIDE EVOLUTION OF FUNGICIDE-TREATED HIGH-MOISTURE CORN

Two corn hybrids, one resistant (FR35 x FR20) the other susceptible (D F20 x DF12) to storage fungi, were harvested and hand-shelled at 22% m oisture, wet basis, and stored at this moisture in aerated 1-kg bin un its. Four Rovral(R) fungicide treatments plus an untreated control wer e tested using carbon dioxide evolution as the index of grain-deterior ation rate. Equations of carbon dioxide weight versus time were fitted . The resistant corn hybrid manifested a lower deterioration rate than did the susceptible hybrid. Samples treated with fungicide showed a r eduction in grain-deterioration rate compared with untreated samples.