Recently, many areas have been hit by heavy rains, causing damage to many crops and peasants’ tears. In particular, corn has been planted in many areas, and corn has not yet emerged. Will this heavy rain cause corn rotten and rotten seedlings? After the heavy rain, what about corn rotten and rotten seedlings? Is there any first aid?
After the sowing of corn, continuous heavy rain will cause corn rotten and affect the emergence of corn. Let's first look at the symptoms of corn rotten.
Symptoms of corn rotten
Corn rotten is generally the case of common seedlings or lack of seedlings. In the position of lack of seedlings, we open the soil and we can see that the corn seeds are swollen with excessive water, causing swelling, decay and deformation. The words "C", "S", and "J" are deformed and generally rotted into brown or black. After the seeds of the rotten seeds are opened, a thick slurry liquid can be found.
Reasons for rotten corn
1. Rain causes large soil moisture
Excessive humidity is related to continuous heavy rain. When the humidity in the soil is too high, the oxygen supply will be insufficient. If the seed does not breathe oxygen, it will rot. Under normal circumstances, where there is water in low-lying areas, the situation is more serious, and the land with high terrain or flat is relatively light.
2. Rainfall causes the temperature to be too low
The continuous rainy weather caused the temperature to decrease compared with the previous days. Under normal circumstances, when the corn emerged, the temperature was stable at 15 degrees, and the germination was more suitable at 20 °C. The germination was the fastest at 25-35 °C, exceeding 40 °C. It is not conducive to sprouting. If the planting is stable and suitable, the temperature after the rain is too low, it will lead to rotten seeds.
3. Rainfall leads to soil compaction
After the rain, the soil is easy to be knotted. In the case of the knot, the seed is prone to rot, so I believe everyone knows.
There are other reasons for the rotten corn, which is briefly mentioned here:
a, sowing too deep.
Under normal circumstances, the corn seeding depth is better at 5cm. If the seeding depth exceeds 6cm, it is more likely to cause rotten seeds. In the deeper case, the situation is more serious.
b. Poor seeding quality.
When planting, due to inattention, some of the plots were pressed too tightly, resulting in rotten seeds.
c, improper selection of seed coating agents.
If the choice of seed coating agent is improper, there will be a bad situation.
First-aid measures for rotten and rotten corn
Check seedlings
1. The plots with a seedling rate below 10% do not need to be replanted.
2, the lack of seedling rate in the 10% to 30% of the plot, we must promptly germination and replanting.
3. For plots with a seedling rate of more than 60%, it is necessary to destroy the seeds in time and grasp the farming time.
Promote weak seedlings
Generally, when the rotten seed situation occurs, it will be accompanied by the phenomenon of weak seedlings. If the weak seedlings are found to be more serious, the canthaxanthin can be sprayed to promote the growth of the root system, and some foliar nutrient fertilizer can also be sprayed.
If there is too much rain, the corn base fertilizer is not deeply applied, and the fertilizer is not isolated enough. If the fertilizer is melted, it will cause rotten seeds. In addition, the herbicide will be leached by rainwater and infiltrated into the germinated seedlings, causing phytotoxicity. Remind the majority of farmers to pay attention to view, timely replanting or destroying seeds, so as not to cause greater losses!
Because the rain is too much, the situation of weak corn seedlings is very common, and the ability of weak seedlings to disease is poor. Therefore, it is recommended that corn growers should prevent the occurrence of diseases in time, such as root rot, stem-based rot, etc., of course, there will be other diseases. Appear, everyone can do positive prevention. After the heavy rain, how to do corn rotten seeds and rotten seedlings, corn rotten seeds, rotten seedlings first aid measures will be introduced to you in detail.
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