The content of water in maize kernels at the time of harvest, not affected by the earliness of cultivar, is considerably affected by the weather over the vegetation period, particularly in July and August. This relationship concerns mainly early and mid-early cultivars. Water content in kernels of mid-late cultivar, on the other hand, depends, on the temperature and total precipitation over the vegetation period. The length of the vegetation period of early cultivar and mid-early cultivar depends on the temperature and precipitation over maize growth and development. The weather, however, has the greatest influence during the summer months, July through August, especially the total precipitation, and, in turn, affects the length of the vegetation of mid-late cultivar.

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