What are the temperature requirements for yam growth
Yam is both a medicinal herb and a vegetable, and it is very popular in our country. When growing yams, there are many things we need to pay attention to and manage with special care. Among them, temperature is especially key, as temperature directly affects the growth capacity of yams and is closely related to the yield and quality of yams. So when growing yams, what are the temperature requirements for yams? Let's take a look together below!
1. The effect of temperature on yams
As just mentioned, temperature has a very large effect on yam growth, mainly including two aspects: air temperature and soil temperature. After yams begin to sprout, soil temperature is very important to yams. Every spring, when the soil temperature gradually rises above 10 degrees, the yam stems and seeds will begin to sprout, but not quickly. When the temperature reaches around 18 degrees, the sprouting speed of yams begins to increase noticeably. The suitable temperature for yam sprouting is around 24 degrees, and under this temperature condition, the sprouting time of yams is generally about 9 days. As the soil temperature rises, the sprouting speed will also continue to accelerate. However, if the temperature rises too quickly, it will affect the growth capacity of the seedlings.
2. Temperature requirements during the tuber expansion period
After yam tubers enter the expansion period, the suitable temperature is generally around 25 degrees. If the temperature is below 15 degrees, the growth rate of yams will be noticeably reduced, and below 10 degrees they will stop growing. The temperature should also not be too high; if it is above 30 degrees, the respiration of yam tubers will be strengthened, consuming too many nutrients and reducing the accumulation of organic matter. The temperature requirements for yam vine growth are relatively high, and it generally needs to be controlled above 20 degrees, with the suitable temperature around 26 degrees. If it goes outside the range of 10-35 degrees, it will at least reduce the growth rate, and at worst cause growth to stop.
3. Temperature requirements during the dormancy period
Generally, after Frost's Descent each year, yams begin to enter the dormancy period, and at this time the aboveground vines of the yam will gradually wither and die. The tubers begin to dormant, but the physiological activities of the tubers are still ongoing. Therefore, during the tuber dormancy period, the temperature should be controlled at around 1-2 degrees. This temperature can inhibit the physiological activities of the tubers, such as respiration and transpiration. This avoids consuming too many nutrients during storage. If the temperature is below minus three degrees, then the yams will suffer cold damage, but the temperature should also not be higher than 10 degrees, as this can easily cause the tubers to rot.
The above is a brief introduction to the temperature requirements for yam growth. Temperature control for yam growth is very important, as it directly affects yield and quality and is also related to planting benefits, so everyone must pay close attention. That is all for today's introduction. This article is for reference only, and we hope it can help everyone!