Active Ingredient and Protective Mode of Action
Wettable Sulphur is formulated as an eighty percent wettable powder with fine particle dispersion and integrated wetting agents.
When sprayed onto plant foliage, elemental sulfur particles slowly sublimate to release sulfur vapor that penetrates fungal spores and mite cuticles.
The sulfur vapor acts as a respiratory poison by interfering with mitochondrial electron transport systems, causing rapid cellular collapse.
- Formulation: 80 percent Wettable Powder (WP)
- Vapor action: Mild sulfur vapor sublimates across foliage to protect dense canopy interiors
- Multi-action profile: Acts simultaneously as a protective fungicide, contact acaricide, and secondary plant nutrient
- Zero resistance risk: Multi-site surface disruption prevents pathogens from developing chemical resistance
Target Diseases and Approved Crop Applications
Wettable Sulphur is registered across grapes, mango, apples, cumin, pulses, and commercial vegetable crops.
It is internationally recognized as the premier organic and IPM solution for controlling powdery mildew epidemics.
Applications must be timed preventively ahead of warm, dry weather favorable for powdery mildew spore multiplication.
- Grapes: Unmatched control of powdery mildew (Uncinula necator) on vines and fruit bunches
- Mango and apples: Suppresses powdery mildew blossom blight and apple scab
- Cumin & pulses: Controls powdery mildew (Erysiphe species) and rust
- Acaricidal action: Effectively manages red spider mites and yellow mites
Slurry Preparation, Temperature Warnings, and Safety
Prepare a smooth pre-slurry in clean water before pouring into the primary spray tank to ensure complete powder suspension.
Never apply sulfur sprays when ambient temperatures exceed twenty-eight degrees Celsius, as rapid vaporization causes severe foliar scorch.
Allow at least twenty to thirty days between sulfur applications and oil-based horticultural sprays.
- Temperature caution: Never apply foliar sulfur during intense midday heat exceeding twenty-eight degrees Celsius
- Oil incompatibility: Never mix or follow within thirty days of petroleum oil sprays
- Personal protection: Wear protective rubber gloves, dust mask, and safety goggles during handling
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is Wettable Sulphur 80 WP primarily used for in agriculture?
It is primarily used as a protective contact fungicide to control powdery mildew and as an acaricide against phytophagous mites.
Why should sulfur not be sprayed during high daytime temperatures?
Applying sulfur when temperatures exceed 28°C causes rapid vaporization that can scorch tender foliage and fruit surfaces.
Does Wettable Sulphur provide nutritional benefits to crops?
Yes, sulfur is an essential secondary plant nutrient; soil microbes oxidize washed-off sulfur into sulphate for root uptake.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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