Hektar

Disease Symptoms:

• Initial symptoms appear on the lower leaves of the plants, which are more sensitive compared to the younger ones.
• On the upper side of the leaves, yellow spots with indistinct edges can be observed. Corresponding to these spots, a grayish-white fluff, representing the fungus's fruiting bodies, appears on the underside of the leaves.
• In severe infections, the spots merge, the leaves curl, detach easily, and fall off, leaving only the young leaves at the top of the plants.

Favorable Factors for Disease Development:

• The disease occurs both in greenhouses and open fields, thriving at temperatures of 25-28°C and low atmospheric humidity (60-75%).
• Irrigation by furrows or drip systems facilitates the spread of the disease.

Prevention and Control Measures:

1. Use of organic products as an alternative to chemical treatments:

   • Garex B
   • Copfort (0.2%) + Algiforter (0.3%)
   • ArgintEvo (0.05%) + Mimox (0.3%)

2. Efficient ventilation of greenhouse spaces.

3. Removal and destruction of plant debris.

4. Foliar treatments with specific products:

   • Ortiva Top (0.1%) – containing Azoxystrobin + Difenoconazole.
   • Cidely Top (0.1%) – containing Difenoconazole + Cyflufenamid.
   • Topas (0.03%) – containing Penconazole.
   • Thiovit Jet (0.5%) – sulfur-based.

5. Special products for defense and prevention:

   • Algasil: A multi-action defense inducer based on seaweed extract (Ascophyllum nodosum) and silicon. Applied in concentrations of 0.3-0.5% to prevent powdery mildew.
   • Mimox: An organic product with fungistatic effects derived from Mimosa, applied foliarly at concentrations of 0.2-0.3%, at intervals of 12-15 days.
   • Microthiol Special: A contact fungicide based on micronized sulfur, applied foliarly at a concentration of 0.4% to control powdery mildew on tomatoes and peppers. Effective at temperatures between 15-25°C.