What are the latest control measures for pepper premature senescence?

In the late growth stage of peppers, improper fertilizer and water management, damage from pests and diseases, or other factors often lead to premature senescence of pepper plants; premature senescence can seriously affect yield and, in severe cases, cause the plants to die prematurely. To promote high yields in peppers, avoiding premature senescence is extremely important, so how should pepper premature senescence be controlled? Let's take a look at the detailed introduction.

1. Strengthen fertilizer and water supply

Peppers should be topdressed in a timely manner to provide sufficient nutrients for plant growth and development; this is an important point for avoiding premature senescence of the plants. Generally, before peppers begin to be harvested, they should be watered and fertilized in a timely manner. Usually, after each fruit harvest, they should be topdressed once, and then topdressed once every 10-20 days. For topdressing, decomposed human manure and urine or nitrogen and phosphorus fertilizers can be applied. For chemical fertilizers, attention should be paid to the amount used. Generally, 10 kg of diammonium phosphate, 5 kg of potassium sulfate, and 1 kg of urea are applied per mu. Before application, dissolve them in water and then pour the solution around the pepper roots. It is not suitable to dig holes and apply it, so as to avoid damaging the pepper root system.

2. Scientifically prevent and control pests and diseases

One of the causes of pepper premature senescence is damage from pests and diseases. The common diseases are anthracnose and phytophthora blight, which mainly harm branches, leaves, and fruits. For anthracnose, spraying a 500-fold solution of amobam once every 10 days for 2-3 consecutive times gives a relatively good effect; for phytophthora blight, an 800-fold solution of chlorothalonil can be used for control, and a 500-fold solution of phosethyl-Al can also be used. Viral diseases and root rot can also be controlled by spraying. Drenching the roots with a 500-fold solution of carbendazim and thiophanate-methyl can prevent and control viral diseases and root rot. The main insect pest of peppers is aphids, which can be controlled by spraying a 2000-fold solution of pirimicarb.

3. Harvest at the right time

Harvesting early and in a timely manner can avoid the fruits consuming a large amount of nutrients from the plants, so as to prevent the plants from aging prematurely. If harvesting is too late, not only will too many nutrients be consumed, but it will also cause the plants to prematurely senesce and die. Except for red pepper varieties or when saving seeds, the suitable harvesting stage is when the green fruits have not yet turned red. Generally, the interval between harvests should preferably be 7-10 days; too long an interval will lead to premature senescence. For red peppers, the suitable harvest time is when they begin to turn red; if delayed, nutrient consumption will increase and cause premature senescence.

4. Avoid excessive vegetative growth

After the first round of peppers has been picked, the plants are in the resting branch stage. At this time, newly sprouted branches at the bottom should be pruned promptly to reduce nutrient consumption. After the second round of peppers begins to form buds, the tender shoots, ineffective branch buds, and flower buds on the plants should be removed promptly to reduce nutrient consumption and promote fruit expansion.

The above is an introduction to control measures for pepper premature senescence. I hope it can help you. For more related knowledge, please stay tuned to us.