Pest and Fungi: Red Spider

FEATURES:red-spider-mite

The red spider is a mite with four legs, an abdomen and head. Its size is approximately 0.5 mm and has a peculiar feature in its color, is light green with two black spots in the summer months and orange unblemished in autumn and winter.

In short, at different stages of development presents colorful distinct as white, beige, red-brown and green, depending also on the tree or plant you stay or time of year.

Underside of a leaf with red spider.
Underside of a leaf with red spider.

Infected plant red spider, the circles indicate the small groups of spiders.
Infected plant red spider, the circles indicate the small groups of spiders.

REPRODUCTION:

For its reproduction should achieve favorable climatic conditions of 40-55% relative humidity and good light incidence. It reproduces by eggs. The eggs are oval, yellowish or reddish, found on the underside of the leaf. Once born spider, which already has six legs, passes through three stages until the adult:

1º- Larva

2º- Protonymph: only have two pairs of legs.

3º- Deutonymph: in this phase difference and the sexual nature of the spider, male or female.

AS_life_cycle

If the temperature is high and dry, the multiplication of the red spider increases more and more.

Full of red spider bites sheet.
Full of red spider bites sheet.

DAMAGE:

The red spider is installed on the underside of the leaf cell sap feeding on the surface layer of it (sucks the sap of the plant). Appear immediately clear spots on upper and lower leaf surface that definitely make the sheet becomes completely yellow, except the nerves, dry up and die. These damages are irreversible.

Always sprayed under the sheet so that the application is effective and do not let the water dripping enter soil where the plant is.
Always sprayed under the sheet so that the application is effective and do not let the water dripping enter soil where the plant is.

DISPOSAL:

Best to avoid problems is prevention, watering every 15 days with oil NEEM, but this is not always, that and while we are growing we fumigate with varying contact insecticides to combat them, such as Dicogreen, Rotenone or Compo spider red. Very important in these cases spray the leaves below, if we do not it will not help. Importantly, if the pest invades ending we flowering, it should not apply anything, as long fight with water until reap, because once cut the spider will go .. It’s a good smear idea to glue the string where we put a dry those infected plants because when wanting to go to seek other even live plants, they will be trapped.

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For cuttings is best to make a solution based on water and dicogreen and sujentadolos by the base, dip into it without wetting the roots for at least 10 seconds to ensure that the insecticide reaches all leaves it will move while under the water.

Predatory spider that helps us in the clean of pests.
Predatory spider that helps us in the clean of pests.

Not to be confused with conventional spiders as these are predators of other insects and therefore, like salamanders, lizards, ladybugs, mantis or wasps, among others, help us to maintain clean floors.

NATURAL ENEMIES:

For several years we was fighting successfully with red spider mite predator Phitoseiulus Persimilis.

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Amblyseius californicus is a predator against various harmful mites in vegetable and ornamental crops.

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The auxiliary Feltiella acarisuga against spider mite is effective in various plants, especially tomatoes.

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Stehorus punctillum a predatory beetle, controls spider mites in cucumber, pepper, ornamental crops and plantations interior.

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Source: sinsemillasevilla

 

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