Guazatine
Active ingredient

Guazatine

Description

Mode of action

Guazatine belongs to the guanidine chemical class and serves as a contact fungicide with protective systemic-like effects on seed surfaces.

The mechanism of action involves the disruption of fungal cell membranes, which leads to immediate cell death and metabolic failure of the pathogen.

The substance exhibits high penetrative capacity into the outer layers of the seed coat, establishing a persistent barrier against soil-borne diseases.

It effectively inhibits mycelium growth and spore germination, preventing infection during the crucial stages of seed germination and seedling emergence.

The action of guazatine is characterized by a long-lasting residual effect that maintains plant health within the soil environment.

What it targets

Guazatine is primarily applied for the control of a broad spectrum of fungal pathogens in cereal and small grain crops.

Main targets include the suppression of various smuts, root rots, and seed-borne molds that affect germination rates.

The chemical is effective against soil and seed-borne complexes that significantly reduce stand establishment if left untreated.

It also shows activity against Septoria species and other early-stage pathogens that can be transmitted through contaminated seeds.

Using this substance helps ensure more uniform emergence and promotes healthier crop development during the initial growth phase.

Rates and timing

Application is performed exclusively via pre-sowing seed treatment, using specialized mixing and coating machinery.

The dosage rate of guazatine depends on the specific level of seed contamination and the crop variety requirements.

A uniform distribution of the fungicide on the seed surface is critical for maximizing its biological efficacy in the field.

Seed treatment can be performed well in advance of the planting season, provided storage conditions remain dry and cool.

Care must be taken to calibrate equipment accurately to ensure that the required amount of active ingredient is applied to every ton of seeds.

Restrictions

Guazatine is considered a hazardous substance, requiring the use of full protective equipment, including respirators and chemical-resistant gloves, during handling.

Under no circumstances should treated seeds be used for human consumption or as livestock feed.

Environmental precautions must be strictly followed to prevent any contamination of water bodies, streams, or ground water.

All containers and unused quantities must be disposed of in accordance with national regulations for chemical waste management.

The product should be stored in its original packaging, away from extreme temperatures and in a location inaccessible to children or animals.

Regulatory

Status in the European Union

Not approved in the EU

CAS number
13516-27-3
Category (EU)
RE - Repellant
Hazard classification (CLP)
Acute Tox. 2 - H330Acute Tox. 4 - H302Acute Tox. 4 - H312Aquatic Acute 1 - H400Aquatic Chronic 1 - H410Eye Dam. 1 - H318STOT SE 3 - H335Skin Irrit. 2 - H315

EU status is for reference only and does not replace national registration in your country.