How to prevent and control premature aging in rapeseed? Practical measures explained in one article

During the cultivation of rapeseed, premature aging sometimes occurs due to improper management. Once premature aging occurs, it has a huge impact on yield, so farmers attach great importance to it. So what are the symptoms of premature aging in rapeseed? What should be done? Let's take a look at the detailed introduction.

1. Symptoms of premature aging

During the growth of rapeseed, if it shows an abnormal purple-green color, the new leaves are relatively small but very upright, and the leaf mesophyll tissue becomes thinner, showing obvious signs of oxygen deficiency. The stem base is thin and weak, the stem skin is shrunken and appears blue-purple, and its growth rate slows down noticeably, mainly shown by slower leaf emergence. According to measurements, when rapeseed enters the regreening stage, generally one new leaf can grow in only 8-10 days, while for weakened plants it takes 15 days. This not only delays the growth of rapeseed, but also affects its final yield.

2. Causes of premature aging

The reason rapeseed develops premature aging is that nutrients are not supplied adequately. Rapeseed is a nitrogen-demanding plant. In early spring, when temperatures rise, its growth rate accelerates. If there is not enough fertilizer to support its growth at this time, it will develop premature aging due to insufficient nutrients. In addition, excessive field humidity is also a cause of premature aging. In fields that remain wet for a long time, the root system of rapeseed turns black, root hairs fall off, the ability to absorb water and fertilizer is weak, and growth is hindered. The aboveground part shrinks due to long-term lack of nutrients, leading to premature aging.

3. Prevention and control measures

During rapeseed cultivation, the supply of fertilizer should be increased, especially in spring when temperatures rise, as this is the period of its fastest growth and is related to later yield. Generally, fertilization begins in February, with nitrogen fertilizer as the main type in the early stage, combined with phosphorus and potassium fertilizer, to promote the start of rapeseed growth. Of course, in addition to fertilizing, field humidity should also be properly controlled, paying attention to the number of waterings and the amount of water applied. Do not water too much at one time, so as to avoid water accumulation in the field. After rain, drainage should be carried out promptly to avoid root soaking, which can cause root rot and death and loss of absorption capacity.

The above is an introduction to prevention and control measures for premature aging in rapeseed. I hope it can help you. If you want to learn more related knowledge, please follow us.