Pest and Fungi: Whitefly


Whitefly is called by its presence of two wings and white appearance, does not exceed 2 mm in length. The wings serve to move from one plant to another with relative ease. During the winter it is permanently on the undersides of the leaves. They are attracted by the yellow and light green. It feeds on young leaves and plant parts. The whitefly is very easy to spot, just move a little plant Grasp the stem, so fly away from it. They are very small and as its name suggests, white.

Underside of a leaf filled with whitefly eggs.


Reproduction is carried by eggs, putting on the undersides of leaves, in an amount of 180-200, yellowish-white and very small size. Since the eggs are laid, until the birth of the individual, it takes time 20-24 hours. It goes through four larval stages from egg to adult adult individual:

1º- The larva has a size of 0.25 mm. This larva digs its mouthparts into the tissues of plants to feed on them.

2º- The larva has already reached a size of about 0.4 mm and can already see the emergence of legs.

3º- When the larva has a size of 0.5 mm and is transparent appearance.

4º- Appear organs like eyes and starts to increase in thickness and size.


After these four larval stages, whitefly made to fly away. The duration is one month in the larval stage. For the full development of it is required suitable conditions. The whitefly is provided with a sucking mouth organ with a sharp extension causing several damages in the plantation because subtracts the plant sap and sooty mold develops.

Sheet suffering the bite of the whitefly.


The damages that are caused begin when the fly is installed on the underside of the leaf and host both adult and larval state, they begin to feed on it and impairing the growth of it. Because of its ease to move from one plant to another, and enter its mouthparts, comes to transmit viral diseases and even by its droppings, which is a sticky sheet and produces the development of fungi and viruses .

Sting whitefly.


To remove from planting, as part of neem rescued, find various products such as pyrethrum, rotenone, potassium soap, etc. It is said that the yellow color attracts so the adhesive strips of this color are great for catching large amounts but does not eliminate them completely.


The parasite Eretmocerus californicus prefers especially the second and early first instar whitefly.


The bug Macrolophus not only protect the crop efficiently against whiteflies, but also occasionally eats spider mites, moth eggs and aphids.


Source: sinsemillas

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