What to do about premature senescence in wheat? The causes and control methods are all here

Wheat is an important economic crop in our country, with an extremely wide planting area, but during cultivation, leaf yellowing can occur, and plants may die before harvest, seriously affecting wheat yield and quality. In fact, this is the phenomenon of premature senescence in wheat, which prevents the plants from growing normally and causes them to age and die prematurely, leading to a shortened grain-filling period and reduced grain weight. So what causes premature senescence in wheat? Let's take a look at its control methods.

1. Drought and water shortage

During the grain-filling period, wheat needs sufficient water. If the climate is dry or the soil is dry at this time, it becomes difficult for the wheat roots to absorb water or they lose water, which destroys metabolism. Especially in the late growth stage, when temperatures are high and plant transpiration is strong, water shortage can cause the plants to wilt, preventing normal grain filling, shortening the grain-filling time, and increasing aging and death.

Control method: During wheat growth, manage fertilizer and water well. Water promptly during drought to supplement what the plants need for growth, especially during the grain-filling period, when water is extremely important.

2. Insufficient nutrients

Insufficient nutrients are also one of the main causes of premature senescence in wheat. Poor soil and lack of nutrients affect wheat photosynthesis, reducing nutrient synthesis. In the late growth stage, the demand for nutrients is even greater. If there is not enough nutrient supply during the grain-filling period, the plants will suffer from insufficient nutrients and prematurely senesce, affecting yield.

Control method: When planting in relatively poor soil, increase the application of organic fertilizer, combine it with deep plowing and careful cultivation to improve soil fertility, and when topdressing, pay attention to a reasonable combination of nitrogen, phosphorus, and potassium fertilizers. This is the foundation for ensuring steady wheat growth and preventing premature senescence.

3. Waterlogging in the soil

Too much accumulated water leads to poor soil permeability, insufficient oxygen, difficulty in root respiration, affected photosynthesis, and reduced nutrient synthesis and accumulation. Moreover, as the plants continue to grow, the waterlogging tolerance of wheat gradually declines. During grain filling, a "overwatering death" phenomenon may occur, causing leaves to lose green and the plants to die from premature senescence.

Control method: Opposite to drought and water shortage, water management must also be done well. During planting, keep the soil moist and slightly dry; do not water too much. During rainy seasons, drain promptly to prevent waterlogging. When weeding or fertilizing, loosen the soil to increase soil permeability, so that root respiration and photosynthesis proceed normally and premature senescence is prevented.

4. Damage from pests and diseases

It is unavoidable for wheat to suffer damage from pests and diseases during cultivation. If pests and diseases are not controlled in time when they occur, they will break out and spread, ultimately causing premature senescence of the plants, reducing grain weight, and affecting yield and quality.

Control method: Establish sound and complete pest and disease control measures. Control work should focus on prevention, with treatment as a supplement. Strengthen daily inspections, aiming to inspect once every two days. When pest and disease damage is found, handle it promptly to avoid further damage and nip it in the bud.

The above are the causes of and control methods for premature senescence in wheat. We hope this helps you. If you want to learn more about wheat cultivation knowledge, please follow us.