When should spring corn be sown? These are the dangers of sowing too early
In the blink of an eye, spring has arrived again, and many regions have begun their crop sowing and production activities. Spring is a crucial season for farmers; the cost of growing crops for the whole year may rest on it, so everyone is rather praying that the weather will be favorable. As for our common crops, wheat and corn are always on everyone's lips. Farmers planting corn in spring are the most numerous, so do you know clearly when spring corn should be sown? And is there harm if it is sown too early? Let's take a look together!
1. When should spring corn be sown?
The sowing time for spring corn differs from region to region, because China is quite large and temperature differences vary across regions. The temperature gap between north and south means there is no unified fixed value; under normal circumstances, sowing mostly takes place between late April and early May. If the local temperature is suitable, it can be moved up to mid-April for sowing. At the same time, adjustments should be made according to the variety, and the sowing time will correspondingly be adjusted as well. For example, early-maturing varieties can be sown a little later, while late-maturing varieties can be sown a little earlier.
2. What are the dangers of sowing spring corn too early?
1. Low emergence rate
After spring-stored corn is generally sown, normal germination and emergence require suitable temperatures, so it is not recommended to sow too early. It is better to keep the overall temperature environment stable at above 10 degrees. If you insist on sowing too early for the sake of yield, the temperature at that time is too low, which may cause the seeds' germination in the soil to be hindered, affecting the germination rate, and the emergence rate will then decrease accordingly. According to the specific situation of the emergence rate, reseed where reseeding is needed, transplant where transplanting is needed, and destroy the crop where the crop must be destroyed.
2. Prone to seed rot and missing seedlings
When spring corn is generally sown earlier, the moisture in the soil has not completely dried out. The moisture density carried over from winter still needs time to be dried by the wind, so it is not conducive to the germination of spring corn. This is especially true in the three northeastern provinces, where some areas are still snowing. If sown too early, on the one hand there may still be accumulated snow in the field, and on the other hand, after the snow melts, it has not yet dried, and the field humidity is too high. Both of these situations are unfavorable for corn sowing. If sowing is forced, the phenomena of seed rot and missing seedlings increase greatly.
3. Prone to causing weak seedlings
Weak seedlings are generally caused by the sowing time or by later fertilizer and water irrigation conditions. Spring corn sown too early does not have strong enough tolerance for temperature, and weak seedlings occur from time to time under low-temperature environments. Moreover, when sown too early, the spring corn's own demand for consuming nutrients increases. If the supply of factors such as water and fertilizer is insufficient, its own resistance weakens. The problems that often appear are either no emergence, or weak seedlings appearing as a group, and later growth is very laborious, which amounts to losing the seeds and wasting manpower as well.
That is all for today's summary and compilation from Tuliu.com regarding the sowing time of spring corn and other issues. There are many friends planting corn now, so be sure to master the timing and methods well, and do not blindly pursue yield alone.