Product Overview
99% Crystal Powder Phosphorous Acid (H₃PO₃) is a white crystalline solid with broad-spectrum fungicidal activity, targeting oomycetes (e.g., Phytophthora, Pythium) and fungal pathogens in agriculture. Synthesized through hydrolysis of phosphorus trichloride, it features high purity and excellent water solubility, making it easy to formulate into liquid sprays. Its systemic action (absorbed through leaves and roots, translocated via xylem and phloem) and dual mode of activity (direct pathogen inhibition + plant immunity stimulation) make it a sustainable solution for crop protection. Unlike traditional fungicides, it has a low risk of resistance development, with effective control maintained over multiple growing seasons.
Product Specifications
Applications
Agriculture
Crop Protection:
Controls downy mildew in grapes, reducing disease incidence from 70% to <5% with 2–3 applications during flowering.
Manages late blight in potatoes and tomatoes, increasing marketable yield by 20–30% compared to untreated crops.
Prevents root rot in citrus, avocado, and ornamentals by suppressing soil-borne Phytophthora spp.
Enhances fruit quality (sugar content, firmness) and yield by reducing post-harvest decay, extending shelf life by 1–2 weeks.
Organic Farming: Approved for use in certified organic systems by USDA NOP and EU 834/2007 as a reduced-risk pesticide with no maximum residue limits (MRLs).
Horticulture & Ornamentals
Greenhouses: Prevents powdery mildew in roses, cucumbers, and begonias, maintaining plant aesthetics and reducing crop losses.
Nurseries: Controls botrytis in bedding plants and potted flowers, ensuring healthy transplants for landscape and garden centers.
Turfgrass: Controls pythium blight in golf courses and sports fields, maintaining green coverage and playability during humid conditions.
Industrial Use
Wood Preservation: Inhibits fungal growth (e.g., brown rot, white rot) in timber and plywood, extending service life by 2–3x in outdoor applications.
Paper Industry: Reduces mold formation in paper products stored in humid environments (e.g., corrugated boxes, paper rolls), preventing quality degradation and odor development.
