Just like harvesting Sugarbeet and Potato, harvesting Corn involves the need to purchase a different type of tool or machine to complete the harvest. Once the whole corn ears enter the combine they are introduced to a spinning rotor which threshes the grain from the cob. Historically, recommendations were to harvest corn silage when kernels were at the black layer stage but today's hybrids are too dry at the black layer stage.
"It's been absolutely excellent weather for harvesting, as dry as it's been. The too wet situation is a harvest timing and storage issue; too dry is more of a harvesting issue. When the corn enters the combine, it's fed up into a cylinder, which turns the piece of corn, forcing the kernels loose.
Conversely, there are some mini sweetcorn cultivars which are harvested before fertilisation, and so don't need to be grown in a block and can even be grown as a windbreak. In dry years the drying rate will be more rapid and during wetter years the drying rate will be less.
Kernels with a large number of stress cracks are more likely to be broken, produce smaller grits during dry milling, absorb water too rapidly during wet milling, and are more susceptible to insect and mold damage during storage. Corn planted in cold, wet soil is unlikely to germinate.
It generally takes four or more rows to get a good harvest, or you can plant them in unorganized groups of six or more plants. With earlage, the biggest problem usually is harvesting the product when it is too dry. Destroy affected plants, and do not replant in the same place for two years.
Many factors affect dry down rate, including hybrid, planting date, general health of the crop, landscape position, soil type, and weather conditions. Sweet corn is ready for harvest when the silks are dried and turning brown, but before the outer leaves of the husk lose their green color and start to shed.
You're looking for tight, filled out corn kernels. Harvesting corn silage before plants reach optimal moisture levels reduces yield per acre and starch deposition, resulting in a hidden economic loss. With ideal growing conditions this year, farmers and How To Harvest Corn agriculture officials say the 2017 corn crop may be one of the best in recent Delaware history.
Ready-grown plants can go into the soil from May. Corn plants severely stressed by dry weather without cobs do not have kernel milk-lines to use as estimates, but plants are typically much higher moisture than they appear. In summary, there is little you can do now to effect corn grain drying rate in the field.
Yet, it's very likely that in this example you would lose more than 10+ bushel to the acre by letting the corn dry out in the field. The drying rate is usually faster when grain moisture is high and slows as it dries and the disparity with the environment diminishes.
How to Grow Corn: Corn is a tender, warm-season annual that is best planted after the soil temperature reaches 60°F, usually 2 or 3 weeks after the last frost in spring. But allowing corn to field dry can also have negative consequences to both yield and quality if stalk or ear rot diseases or insect feeding damage are increasing.