ISOPROTHIOLANE 40% EC – IsoShield

Key Benefits

Dual action — fungicide and plant immunity booster
Highly effective against rice blast and sheath blight
Systemic action — preventive and curative both
Unique dithiolane group — low resistance risk
Additional plant growth promoting effect in rice

Target Crops

Rice (Transplanted)
Direct-seeded Rice
Paddy

Target Diseases

Leaf blast
Neck blast
Node blast
Panicle blast
Sheath blight
Brown spot

Dosage

400–500 ml per acre

Application

Foliar spray — apply at first sign of blast symptoms
Apply preventively at tillering and panicle initiation stages
Use 150–200 litres of water per acre
Repeat application after 20–25 days if required

Packaging

250 ml, 500 ml, 1 L, 5 L

Category: 🍄 FUNGICIDES

Description
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Description

ISOSHIELD is a highly effective systemic fungicide containing Isoprothiolane 40% EC, belonging to the unique dithiolane group of fungicides and widely trusted for reliable management of rice blast and sheath blight diseases in paddy cultivation across India. Isoprothiolane works through a dual mechanism — it directly inhibits lipid biosynthesis in the cell membranes of the blast fungus Magnaporthe oryzae and simultaneously induces systemic resistance in the rice plant itself, enhancing the crop’s own natural defence mechanisms against fungal infection. This unique combination of direct fungicidal activity and host plant immunity induction makes ISOSHIELD significantly more effective than conventional fungicides that rely solely on direct pathogen inhibition.

ISOSHIELD provides both preventive and curative protection against all stages of rice blast disease including leaf blast during the vegetative stage and the highly destructive neck blast, node blast and panicle blast during the reproductive stage. Neck blast infection at the panicle emergence stage can cause complete panicle sterility and catastrophic yield loss — making timely preventive application of ISOSHIELD at the panicle initiation and heading stages absolutely critical in blast-susceptible areas and varieties. Its additional activity against sheath blight caused by Rhizoctonia solani makes ISOSHIELD a particularly versatile and valuable fungicide for comprehensive rice disease management — controlling two of the most important rice diseases with a single product.

A notable additional benefit of ISOSHIELD is its mild plant growth promoting activity in rice — farmers regularly report improved tillering, stronger root development, better leaf colour and enhanced overall crop vigour following ISOSHIELD applications compared to untreated plots. Its emulsifiable concentrate formulation ensures excellent mixing in water, rapid absorption through leaf and stem surfaces and fast systemic translocation throughout the rice plant. With reliable disease control, host plant immunity induction, plant growth promotion and an excellent crop safety profile at recommended doses, ISOSHIELD is one of the most complete and farmer-friendly fungicide solutions available for rice cultivation in India today.