Why do pepper leaves turn white


The most common type of vegetable pepper in our country is bell pepper, which forms large, thick, short tetrahedral fruits and is widely used in cooking. White leaves on pepper do not appear too often, but indicate a disease of the plant, so you need to correctly determine the cause and choose the most effective way to deal with this symptom.

Optimal conditions for growing

Peppers are among the most heat-loving crops.

To prevent the defeat of the vegetable culture by various diseases and to grow the most strong, with good immunity, abundantly bearing plants, pepper should be provided with the right conditions for full growth and good development:

  • conduct advance preparation and disinfection of the soil;
  • monitor indicators of soil fertility and acidity;
  • timely carry out irrigation activities;
  • use the standard feeding scheme at different stages of development;
  • comply with the timing and pattern of planting a vegetable crop;
  • to prevent the defeat of diseases and pests.

Along with other types of nightshade, peppers react very sharply to the lack of proper care, as a result of which the leaves turn white or fall, and the whole plant development cycle is disrupted. Strict adherence to pepper growing technology is a guarantee of a high yield and minimizes the risk of damage to the garden culture by diseases and pests.

How to process peppers from pests

The main reasons for the appearance of white leaves

There are several main, most common reasons, as a result of which white spots are formed on the leaves or a complete change in their coloring. If the leaves do not turn white due to a violation of agricultural technology, then the main cause can be considered the defeat of the most common fungal infections.

Damaging factorLatin nameSigns of defeatMalware
Powdery mildewConidia of Cladosporium spp.Most often, greenhouse plants are affected, on the leaves of which large, chlorotic and irregular-shaped spots appearAs a rule, the level of harmfulness of powdery mildew on peppers is insignificant and is associated with the loss of part of the photosynthesis apparatus
SeptoriaFungus SeptoriaWhite or grayish spots of indefinite shape form on the leaves of the plant, which quickly grow and can occupy the entire leaf surfaceFungal infection can destroy up to 35-40% of the crop both in greenhouses and on ridges of open ground
SclerotiniaSclerotinia marsupialWhite spots with dark, fairly well-defined dots in the middleThe basal zone of the plant takes the brunt, and the fruits become watery and unsuitable for eating

The cause of the whitening of pepper leaves is often a sunburn, which arose as a result of irrigation activities in the daytime and water entering the aerial part of the plant. Leaves on seedlings can turn white when transplanting it to a permanent place, if the young plants are not subjected to preliminary hardening. A necessary condition for maintaining the health of pepper is the hardening of vegetable seedlings for a week before planting in open or greenhouse soil.

Preventive actions

To protect peppers from the defeat of powdery mildew, it is necessary to treat plants planted on a permanent place with biological preparations based on Bacillus subtilis, which include Alirin-B, Gamair and Fitosporin-M. Multiple preventive spraying of the aerial parts with folk remedies is also allowed.

To prevent damage by white spotting or septoria, it is recommended to perform preventive spraying of pepper bushes Trichodermin or Fitosporin very heavily infected plants are best removed from the site. A prerequisite is to keep the beds with a vegetable crop clean, due to the ability of the fungal spores to remain viable on weeds and plant debris for a long time. This feature often causes re-infection of crops.

Sclerotiniosis is often caused by a lack of nutrients such as iron and nitrogen. Prevention of the lesion is aimed at filling the nutritional deficiency by applying special fertilizers and monitoring the state of soil fertility in the area reserved for growing pepper. Strict observance of temperature conditions and humidity indicators when growing a garden crop in protected ground conditions also reduces the risk of fungal infection.

Effective treatments

For the treatment of fungal infections of vegetable pepper, it is advisable to use the most powerful and modern chemical pesticides that can destroy the pathogen as soon as possible.

Damaging factorDrug nameMode of application
Powdery mildewColloidal Sulfur, Cumulus DF and Tiovit JetProcessing of the aerial parts in dry weather at an air temperature of at least 22 ° C
Septoria or sclerotiniosisAbiga Peak, Oksikhom and Euparen-MultiSingle or double spraying of the aerial part at the first signs of fungal infection

In order to improve the survival rate of pepper seedlings and increase the immunity of vegetable culture, it is also recommended to use "Ethamon", "Epin-Extra", "Energy-M" and Mivalom-Agro. These drugs have proven themselves in the conditions of home gardening and have a stimulating effect on various garden crops, including pepper.

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