Nematodes on strawberries - effective chemical and folk methods of struggle

Strawberry nematode is a leaf parasite, a small worm of light yellow color, up to 2 cm long. The pest parasitizes in strawberry leaves, upper buds, sucking life-giving juices from it and infecting it with harmful substances, which leads to metabolic disorders. The fight against the nematode is carried out by folk, chemical, agrotechnical methods.

Signs of Strawberry Nematode Infections

It is almost impossible to detect the pest itself because of its small size. You can dig a strawberry bush and look at the root system. If there are small white growths on the roots - you can rest assured - the culture is infected. To understand that the plant is affected by a nematode, it is also possible by external signs:

  • cessation of development, growth of bushes;
  • deformation of forming ovaries;
  • reduction in size and folding sheet plates, the appearance on their inner side of galls - blisters;
  • withering of the apical kidneys;
  • shortening of petioles;
  • discoloration of plants;
  • the formation of small fruits.

Chemicals for the fight

Nematode affects the tissue of strawberry bushes and in these places ideal conditions are created for the development of fungal, infectious diseases. Worms are constantly present in the soil, and getting rid of them is completely unrealistic, but in a small amount of pests do not pose a great danger. When a lot of nematodes have accumulated, and you notice signs of their presence, you need to immediately begin treatment of strawberries. The following chemicals give a quick positive result:

Title

Composition

the effect

Dosage, method of application

Benefits

disadvantages

Price in rubles

Heterophos

S-propyl-O-phenyl-O-ethylthiophosphate

  • helps get rid of wireworms, nematodes, weevils

Dissolve 15 g of the product in a bucket of water (10 l), process plants at a temperature of at least + 20 degrees

very effective

highly toxic

 

Phosphamide

emulsifier;

organic solvent

  • destroys many types of pests

Processing is carried out with 0.025-N solution of Phosphamide 1 time / 3-5 days during the growing season

possesses long-term systemic and contact action

expensive

542 per 1 liter

Lindane

active substance - lindane

  • effective against nematode, caterpillars, flies

Strawberries are sprayed with Lindane's 0.025th solution.

gives a good result

toxic

Out of stock


Folk methods

If strawberries are affected by a small number of worms, then it is better to use not chemicals, but folk remedies for processing:

  1. Infusion of calendula. Pour a bucket of water (5 l) 1 kg of crushed dry or fresh calendula, insist 2 days. Strain, water the crop 2 times a month for prevention and 1 time per week for treatment, starting in spring. Can be used for spraying.
  2. Hogweed is poisonous. To prepare the infusion from this plant should be in protective clothing, gloves, a mask. Pour 1 kg of hogweed with a bucket of water (10 l), insist a day. Use for spraying.
  3. Nettle infusion. Pour a whole bucket of the plant, pour boiling water, insist 3-4 days. Treat a nematode-infected strawberry. According to gardeners, the infusion kills both adults and eggs.
Straw Pest and Disease Control

Marigold Flask

These flowers are poison for worms, so they are recommended to be planted near strawberry beds. An infusion of marigolds is prepared as follows:

  1. Fill ½ part of the bucket with fresh or dry marigold flowers, fill to the brim with warm water, leave for 2 days at room temperature.
  2. Strain, add 40 g of grated laundry soap, spray the infected bushes with the resulting liquid.

Onion infusion

  1. Grind 200 g of onion-batun, pour 5 liters of water.
  2. Insist for 1-2 days, and then strain.
  3. Spray strawberry bushes with infusion: for prevention - 2 times a month, for treatment - 1 time per week.

Hot water treatment

This processing method is carried out in the presence of obvious signs of damage to the strawberries by the nematode. If you observe only a wilting plant and think that the reason is a pest infection, spray the crop with plant infusions. It is believed that worms live, actively reproduce at temperatures from + 18 ° C to + 24 ° C. A temperature of + 40 ° C is disastrous for them, so the treatment of the affected bush is carried out using hot water:

  1. Dig a strawberry bush with obvious signs of worm infection.
  2. Wash the root system with water; you can not use it in any case.
  3. Dip the roots in hot water 47-55 degrees. Adults will die in 5 minutes at 40˚, but the pest eggs need more time and a higher temperature. Experienced gardeners are advised to withstand roots in boiling water for half an hour, this does not harm strawberries.
  4. After processing, lower the bush in cold water, and then plant it in a new place.

Prevention

So that later you do not have to fight the nematode, regularly carry out the following preventive measures:

  1. Choose nematode-resistant strawberry varieties for planting. If you decide to purchase others, carefully inspect the root system before buying for signs of damage.
  2. Treat root system and soil with hot water before planting.
  3. Thin out strawberry beds regularly and weed.
  4. Water the strawberries no later than 6 pm so that the leaves and the soil have time to dry. Worms love a humid environment.
  5. Regularly feed (organics, potassium).
  6. Transplant the culture to another place once every 4 years.
  7. Next to strawberry beds, plant plants that produce phytoncides - marigold, marigolds, nasturtium.
  8. Dig up strongly affected bushes immediately with a root lump and burn, and pour over boiling water over the soil where they grew.

Watch the video: Foliar Nematodes in Strawberries (February 2020).