Sil-MATRIX LC

Certis · Potassium silicate 29% · EPA Reg 70051-127 · Fungicide Document last checked 2026-05-30

About this product

Active ingredient Potassium silicate 29%

Manufacturer Certis

Category Fungicide

Full details for Sil-MATRIX LC

Source product label ↗ Open the catalog source label while the local copy is reviewed. Verify the product name, EPA registration number, and revision before use. Source safety data sheet ↗ Open the catalog source SDS while the local copy is reviewed. Verify the exact product and revision before relying on it. EPA registration data Reg. 70051-127 — registry reference, signal word and status.

Applicator discussion

Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.

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According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 70051-127 →

Sil-MATRIX® LC is a broad-spectrum preventative fungicide, miticide, and insecticide used for various agricultural and ornamental applications. Its active ingredient is Potassium silicate (29%). It is designed to control fungal diseases, spider mites, aphids, and whiteflies. The product can be used on a wide variety of crops including vegetables (root, tuber, leafy, brassica, legume, fruiting, cucurbit, stalk/stem), fruits (citrus, pome, stone, berry/small fruit, tree nuts), grains, oilseeds, and ornamentals. It is also approved for use on turf. For optimal performance, it should be applied on a regular, scheduled preventative basis. Application rates vary by crop and target pest, typically ranging from a 0.25% to 1% solution diluted in 20 to 250 gallons of water per acre. For turf, it is applied at a 1% to 2% solution. Users should note that plant sensitivities vary; it is recommended to test on a small area first to check for phytotoxicity, especially when using near blooms of certain species like Geranium, Marigold, Pansy, and Petunia. When handling, wear long-sleeved shirts, pants, socks, shoes, chemical-resistant gloves, and goggles or a face shield. Avoid contact with eyes and skin. Do not apply directly to water or areas where surface water is present.

Pests covered (2)

fungal diseases, spider mites, aphids, and whitefliesAphids, Mites, Spiders, Whiteflies

Areas treatable (1)

vegetables, fruits, nuts, vine crops, field crops, ornamentals and turf

How to treat each type of area 1

vegetables, fruits, nuts, vine crops, field crops, ornamentals and turf

preventative

Target pest	Location	Rate	Unit	Dilution	Label notes
fungal diseases, spider mites, aphids, and whiteflies	Both	0.25% to 1% solution (foliar) or 1% to 2% (turf)	solution concentration	1.4-4 quarts per 100 gallons of water (for 0.25%-1% range)	Apply on a regular scheduled preventative spray program.

Mixing instructions 1

For pests	Location	Amount	Per	Finished strength	Label notes
fungal diseases, spider mites, aphids, and whiteflies	Foliar	0.2 to 10 quarts	100 gallons of water	0.25% to 1% Sol.	Mix thoroughly and agitate until mixed; do not store diluted mixture.

Worker safety

Re-entry interval (REI) 4

PPE required Long-sleeved shirt and long pants, socks and shoes, chemical-resistant gloves, goggles or face shield when handling undiluted concentrate.

Timing & weather

Apply up to the day of harvest (0-day PHI) for most crops.
For turf, apply in a minimum of 40 gallons finished spray per acre.

Use restrictions 3

Do not apply directly to water or areas where surface water is present, or to intertidal areas below the mean high water mark.
Do not apply foliar sprays to open blooms of Geranium, Marigold, Pansy, and Petunia.
Do not apply through any irrigation system unless the supplemental labeling on chemigation is attached.