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7. PESTS AND DISEASES

7.1. Pests

-Spotted spider mite (Tetranychus urticae (Koch) (Acarina: Tetranychidae), T. Turkestani (Ugarov & Nikolski) (Acarina: Tetranychidae) and T. ludeni (Thatcher) (Acarina: Tetranychidae))

The first species is the most common cited in protected horticultural crops, but the biology, ecology and damage are similar, so the three species are addressed jointly.
It develops on the underside of the leaves causing discoloration, pits or yellowish spots in the beam can be seen as the first symptoms.
With further drying occurs populations or even foliation. The most serious attacks occur in the early growth stages. High temperatures and low relative humidity favor the development of the pest.

Preventive control and cultural techniques

-Structures and soil disinfection prior to planting in plots with a history of spider mites.
-Elimination of weeds and crop residues.
-Avoid excessive nitrogen.
-Monitoring of crops during the early stages of development. Read the rest of this entry »