What is one potential consequence of delayed harvest of corn stalks affected by rot?

Delayed harvest of corn stalks affected by rot can lead to a reduction in quality, which aligns with the correct answer. When corn stalks are left in the field longer than optimal, the presence of rot can intensify, leading to further deterioration of both the stalks and the ears of corn. This decline in quality can manifest in various ways, such as decreased nutritional value, reduced appeal for livestock feed, and the potential for mycotoxin contamination.

In contrast, other options do not accurately reflect the consequences of delay. Increased firmness would not result from rot, as the affected stalks typically become weak and susceptible to breakage. While some corn plants may remain standing longer when affected by rot, this is not a desired outcome as it can complicate the harvesting process and does not pertain to quality. Kernel development being enhanced contradicts the effects of rot, as the presence of decay does not support healthy growth or development of kernels. Thus, the impact of delayed harvest combined with rot significantly undermines the quality of the crop, making the identification of reduction of quality as the correct answer essential in recognizing the practice implications in agricultural pest management.