Touchstone is a highly effective dual-action fungicide formulated with Carbendazim and Mancozeb to provide complete crop protection through both systemic and contact activity.

Carbendazim works systemically by penetrating plant tissues and inhibiting fungal cell division, thereby stopping internal infection development. Mancozeb acts as a protective contact fungicide that forms a defensive layer on plant surfaces, preventing spore germination and external infection spread.

This combination ensures multisite activity, reducing the risk of resistance development while delivering strong preventive and curative control. Touchstone is widely used in paddy and other field crops to manage blast and a broad range of fungal diseases, ensuring healthier plants, improved crop vigor, and better yield quality.

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Technical Details

Technical Composition: Carbendazim 12% + Mancozeb 63% WP
Formulation Type: Wettable Powder (WP)
Category: Systemic & Contact Fungicide
Target Disease: Blast (primary), Leaf spots, Blights, Rusts
Crop: Primarily Paddy (Rice)
Dosage: 0.3 kg per acre

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Mode of Action

Touchstone works through a dual mechanism:

• Carbendazim inhibits fungal cell division by disrupting microtubule formation inside plant tissues (systemic action).
• Mancozeb disrupts multiple enzyme systems on the plant surface, preventing spore germination (contact action).
  Together, they provide internal + external disease protection with multisite resistance management.

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Mode of Entry

Systemic absorption into plant tissues combined with protective surface contact activity.

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Key Benefits

Dual systemic and contact protection for complete disease control
Highly effective against paddy blast and other fungal diseases
Multisite action reduces resistance development risk
Improves crop vigor, tillering, and yield quality
Long-lasting protective effect under field conditions
Suitable for preventive and curative use

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Recommendations

Crop: Paddy (Rice)
Target Disease: Blast
Dosage: 0.3 kg/acre
Application: Foliar spray using knapsack or power sprayer
Timing: Preventive application or at early disease appearance

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PHI & REI

PHI: As per label recommendation
REI: 12–24 hours after application (general safety guideline)

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Application Method

Mix the recommended quantity of Touchstone in a small amount of water and stir thoroughly to form a uniform suspension. Add into the spray tank filled with water and mix well. Apply as a foliar spray ensuring complete coverage of the crop canopy. Use during early disease incidence or as a preventive spray under favorable conditions for fungal development. Avoid spraying during high wind, rain, or extreme heat conditions.