How to prevent and control sunflower lodging? Growers need to master these methods
The sunflower is an oilseed and grain crop, and it is also an ornamental plant with extremely high ornamental value. Sunflowers are highly adaptable to the environment and are often used for cultivation on wasteland, protected cultivation, environmental improvement, soil improvement and so on. However, when growing sunflowers, various reasons can cause sunflowers to lodge to different degrees. So how do we prevent this phenomenon from occurring? What symptoms appear when sunflowers lodge? Let's take a look together.
1. Why do sunflowers lodge?
During the growth of sunflowers, lodging most commonly occurs just before harvest, and it has a very large impact on sunflower yield. Sunflower lodging is not caused by just one reason; it may be improper variety selection, improper selection of the planting site, or improper planting density, and finally malnutrition, improper field management, damage from pests and diseases, and weather conditions are all causes of sunflower lodging.
2. Signs that sunflowers are lodging
Many people say that there are no symptoms before sunflowers lodge, that it is generally a sudden phenomenon and there is simply no time to take countermeasures. In fact, there are certain symptoms before sunflowers lodge. First, if the sunflower stalks are relatively thin and weak, lodging is very likely to occur; second, if the planting density is too high, lodging is also very likely to occur when the weather changes; and third, when more pests and diseases are found in the field and the sunflower stalks or parts of the plant are damaged, lodging is also very likely to occur. It is not that lodging happens suddenly, but rather that we have not considered it from multiple aspects, so in the end it causes irreparable losses.
3. Prevention and control methods
To prevent sunflowers from lodging, we need to analyze the causes that may lead to this phenomenon. First, we can reduce the occurrence of this phenomenon through variety selection, trying to choose short-stalked, hard-stemmed varieties with strong disease resistance. Second, apply topdressing scientifically to ensure thick, strong sunflower stalks, improve their wind resistance, and avoid lodging caused by weather conditions. Third, plan density scientifically and plant reasonably while making full use of land resources. Also, during the growth of sunflowers, water reasonably according to their needs to avoid root rot. Finally, strengthen field management: when pests and diseases are found, control them promptly at the early stage to inhibit the worsening of the condition.
The above is all of today's introduction from the editor about the causes of lodging during sunflower cultivation and the prevention and control methods. I hope it can help friends in need. If you have questions about the specific implementation details, you can leave a message for the editor.