When is the best time to plant corn? Detailed explanation of causes of seedling death and solutions

Corn, also known as baoGu, is a common crop in our country, grown by almost every household, and is widely cultivated because of its broad application value, simple cultivation, and low investment cost. So when is the best time to plant corn? What is going on with dead seedlings?

1. Introduction to corn:

1. Is corn a hot-natured or cool-natured food?

Corn is a hot-natured food and is low in energy, so it can effectively speed up gastrointestinal peristalsis and promote weight loss. Generally, people who are losing weight like to use it as a staple meal, and of course some people also grow it specifically to feed poultry.

2. Is corn a coarse grain?

Corn is a coarse grain and also a fine grain, because corn has many uses. Besides being ground into flour or corn grits, it can also be eaten directly. If it is eaten directly without being broken down, it is a coarse grain; if it is processed into products such as corn flour or corn grits, it is a fine grain. So whether it is a coarse grain is hard to say, and it depends specifically on how you use it.

2. When is the best time to plant corn?

In general, corn is planted in spring and autumn, but because of climate differences among regions, planting varies. The specific planting times are as follows:

1. Spring planting time: generally sown from late April to early May, and harvested in late August. However, in Northeast China it is generally planted in mid-to-late April, and can only be harvested around October.

2. Autumn planting time: mid-July, with harvest in mid-to-late October.

3. Other planting times: planting from late March to early April. For example, in the Shandong area it is generally planted in early April and harvested at the end of August or in September, while in southern regions it is generally planted from late March to early April and harvested in early July.

3. What is going on with dead corn seedlings?

Cause 1: Too much fertilizer. Corn has high fertilizer requirements, but that does not mean it needs a lot of fertilizer. Generally, the growth period has a relatively high fertilizer demand, so during the growth period try to apply some nitrogen fertilizer. However, if it is spread directly on the roots or seedlings, it will burn the roots and cause seedling death.

Solution: If the seedlings die shortly after emergence, promptly pull out the seedlings and replant some. But if they die during the growth period, then plant some other crops. It is worth noting that when fertilizing later, be sure to use formula fertilizer and apply it at the right time and in the right amount in a place farther from the roots, so the seedlings will not die.

Cause 2: Too high a temperature leading to water shortage. Corn has a relatively high water requirement, especially during the heading stage when the water demand is greatest, so more watering is needed during this period. In addition, during high summer temperatures, more watering is also needed, otherwise drought and water shortage will cause seedling death.

Solution: Water more during the heading stage and in dry, hot seasons to avoid insufficient water causing seedling death. It is worth noting that during high-temperature summer weather, water in the morning and evening, which can not only lower the temperature but also supply water in time.

Cause 3: Effects of pests and diseases. During the corn growth period, pests and diseases such as root rot, brown spot disease, seedling blight, aphids, and cutworms may appear, and these pests and diseases can cause seedling death.

Solution: If very few seedlings die and the situation is mild, special-purpose chemicals can be selected for spraying control. If seedling death is severe and the seedlings die shortly after emergence, promptly pull out the seedlings and replant some; but if they die during the growth period, then plant some other crops. In addition, when selecting seeds, try to choose seeds of good quality with strong disease resistance, high-temperature tolerance, and drought tolerance, and disinfect and sterilize the seeds before planting. This can reduce the occurrence of pests and diseases, and there will be no seedling death or yellowing leaves.

Cause 4: Spraying too much pesticide or improper use. During the corn growth period, some pesticides need to be sprayed to prevent and control various pests and diseases, but if too much pesticide is sprayed or it is used improperly, seedling death will occur.

Solution: After seedling death, if the seedlings die shortly after emergence, promptly pull out the seedlings and replant some; but if they die during the growth period, then plant some other crops. In addition, when spraying pesticides later, try to follow the instructions, and the concentration should not be too high. In that way the seedlings will not die, and the pesticide effect can also be brought into full play.

The above is a detailed introduction to corn planting times and the causes of seedling death and solutions. I hope it is helpful to everyone.