
Broad-Spectrum Pest Control • Residue-Free • IPM Friendly
Siriza™ WP is a bio-insecticide formulated with Beauveria bassiana, targeting thrips and other insect pests while being safe for plants, people, and the environment. Ideal for IPM programs, it offers effective, residue-free pest control for vegetables and ornamentals with weekly applications. Mix 500g in 1000L of water for comprehensive foliar coverage. Perfect for sustainable pest management.
Take control of soft-bodied pests with the power of nature. Siriza™ WP by Mara LifeSciences is a broad-spectrum biological insecticide powered by Beauveria bassiana, a naturally occurring fungus that targets soft-bodied insect pests and caterpillars. It works through contact, helping control pests while supporting residue-free crop protection. With UV protectants and flexible foliar and soil application, Siriza™ WP provides reliable protection for vegetables and ornamentals—supporting effective, sustainable pest management.
PRODUCT SPECIFICATIONS
Active Ingredient: Beauveria bassiana — 1 × 10¹⁰ CFU/g
Formulation: Wettable Powder (WP) with UV protectants
Target Pests: Soft-bodied insect pests and caterpillars (Lepidoptera)
Dose Rate: 500 g/ha (0.5 g per litre of water)
Application Method: Foliar spray & soil application
PHI: 0 days
Shelf Life: 12 months at room temperature
Pack Sizes: Available in standard commercial pack sizes
Registration: PCPB (CR) 2644
1. Broad-Spectrum Control: One product for a wide range of soft-bodied insect pests and caterpillars.
2. Contact Action: Spores infect pests on contact; no feeding required.
3. Foliar & Soil Use: Targets pests on the crop and the life stages hiding in the soil.
4. Self-Spreading: New spores form on infected insects and move through the pest population.
5. UV Light Resistance: Built-in UV protectants keep spores alive and active after spraying.
1. One Solution, Many Pests: Simplify your spray programme with a single product that tackles multiple pest problems.
2. Reach Pests Others Miss: Contact action gets to hidden, sap-feeding and soil-dwelling pests that stomach poisons cannot.
3. Protection That Keeps Going: Siriza™ keeps spreading through pest colonies, extending control well beyond the day you spray.
4. Harvest-Friendly: Zero harmful residues, even when used right up to the day of harvest.
5. Stay Ahead of Resistance: A natural fungal mode of action that pests cannot easily overcome, making it perfect for rotation in IPM.
Crop: Vegetables & Ornamentals
Target: Soft-bodied insect pests & Caterpillars
Rate: 500 g/ha (0.5 g/L).
Timing / Interval: Apply at the first signs of pests; in greenhouses, reapply every 15–20 days.
Note: Per-litre rates are based on 1,000 L of water per hectare.
Siriza™ WP gives you broad-spectrum, residue-free pest control that works harder the longer it is in your crop. It is the natural choice for healthier plants and cleaner harvests.
Always read and follow the product label before use. Talk to a Mara agronomist: +254 794 658 410 | office@maralifesciences.co.ke
We combine scientific innovation with farmer-centric support to create healthier crops, stronger communities and a more sustainable planet.


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