Which of the following practices can help prevent mold problems in stored corn?

Cleaning the grain and bins thoroughly before storage is a crucial practice for preventing mold problems in stored corn. This step removes any leftover grain residues, dust, and debris that can harbor mold spores and other pathogens. If these materials are not cleaned out, they can create an environment conducive to mold growth, especially if moisture levels are high. Additionally, clean bins help in monitoring the condition of the stored grain more effectively since contaminants can be more easily assessed without interference.

In contrast, allowing excess moisture to remain in storage, storing grain at high temperatures, and using damaged kernels can all contribute to mold development rather than prevent it. High moisture levels and temperatures create an ideal environment for mold growth, while damaged kernels can harbor pathogens and further disrupt the integrity of the stored grain. These practices would exacerbate mold issues rather than mitigate them.