What are the causes of short corn husks? The latest analysis is here
Corn is a very popular food crop and is grown on a very large area in our country. The cultivation techniques for corn are not very difficult, and the yield is relatively high. However, if management is poor, many problems often arise during corn growth, affecting corn yield and reducing planting benefits. Short corn husks are one of them. So what causes short corn husks? Below, the editor will briefly introduce the reasons to you. Let's take a look together!
1. Drought and water shortage
Corn has a very large demand for water during growth. During cultivation, we must water frequently to meet the water needed for corn growth, especially during the jointing stage. The corn jointing stage is exactly the differentiation stage of the corn ear, and at this time the demand for water is even greater. If high temperature and water shortage occur during the jointing stage, then the differentiation times of the corn husk and the ear will be inconsistent, causing the phenomenon of short corn husks.
2. Weather reasons
Weather is also a main cause of short corn husks. For example, during rainy days, light and temperature cannot meet the growth needs of corn. This affects corn photosynthesis, and if photosynthesis is affected, nutrient accumulation is insufficient. This causes the growth rate of the husk to decrease, and its growth progress becomes inconsistent with the ear, so it cannot grow to the same length as the ear. The ear exceeds the length of the husk, causing undesirable phenomena such as exposed tips.
3. Overdense planting
When planting corn, planting density needs to be strictly controlled. Absolutely do not plant too densely. If planting is too dense, the growth space for corn plants will be insufficient, affecting the growth of each plant. It reduces air and light permeability in the corn field, causing the internal temperature to rise beyond the range that corn can tolerate, and the insufficient light will also have a great impact on the growth of corn husks and the seed-setting rate, seriously hindering corn growth.
4. Insufficient microelement fertilizer
During the growth process of corn, nutrients are essential substances. When topdressing fertilizer, many farmers only pay attention to the application of basic elements such as nitrogen, phosphorus and potassium, while ignoring trace elements such as boron. If corn is deficient in boron, it will inhibit the formation of corn tassel pollen and reduce its activity. If it is deficient in zinc, many white spots will appear on the old leaves of the corn plant, then expand to form white patches, causing leaf death, shortening internodes and causing ear deformity.
5. How to prevent short corn husks
First, we need to do a good job in fertilization, and advance the time of applying ear fertilizer, preferably applying ear fertilizer around the tasseling stage. Then we need to water frequently to avoid drought in the soil, especially when the female ear emerges, and we must ensure sufficient water to promote normal growth of the husk. When planting, we should also do a good job in variety selection. For example, red-cob varieties are very prone to undesirable phenomena such as short husks, missing grains and bald tips.
The above is a brief introduction to the causes of short corn husks. There are many reasons causing short corn husks, and most of them are caused by improper management. Therefore, when planting, everyone must do a good job in management to ensure normal corn growth. That is all for today's introduction. This article is for reference only, and we hope it can help everyone!