Mechanism of Action and Core Advantages
Herbicidal Mechanism:
Consistent with all glyphosate salts, it inhibits 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) in plants, blocking the biosynthesis of aromatic amino acids such as phenylalanine, tyrosine, and tryptophan. This interrupts plant protein synthesis, causes growth stagnation, and eventually leads to the wilting of the entire plant (it has strong systemic conductivity, being absorbable through leaves and stems and translocatable to roots).
Unique Advantages:
Potassium supplementation function:
Contains potassium ions (K⁺), which can supplement potassium for crops while weeding. It is particularly suitable for crops with high potassium demand (such as potatoes, cotton, fruit trees, grapes) and potassium-deficient soils (sandy soils, acidic soils), enhancing crop stress resistance (drought resistance, disease resistance).
Safety adaptability:
It is less irritating to the tender leaves and roots of most crops compared to glyphosate isopropylamine salt, resulting in lower phytotoxicity risk when used directionally in fields with sensitive crops (such as some citrus varieties, strawberries).
Formulation compatibility: It has good water solubility and is easily compounded with herbicides such as fluoroglycofen-ethyl and fluroxypyr, without affecting the stability of the compound formulations.
Applicable Scenarios:
Agricultural field:
Directed weeding in orchards (apple, pear, grape), tea gardens, and mulberry gardens (avoid contact of the liquid with green tissues of crops);
Inter-row weeding in crops such as corn, soybean, and cotton (directed spraying after the seedling stage, avoiding crop leaves);
Weeding in fields of tuber crops such as potatoes and sweet potatoes (potassium supplementation can promote tuber enlargement).
Non-cultivated land field:
Broad-spectrum total weed control in areas such as roadsides, railway sides, factory areas, and forest fire prevention paths, especially suitable for barren areas with potassium-deficient soil.
Safety and Environmental Impact:
Toxicity:
Acute toxicity: The acute oral LD₅₀ in rats is > 5000 mg/kg (low toxicity), and the acute dermal LD₅₀ is > 2000 mg/kg. It is non-irritating to skin and eyes, and has no teratogenic, carcinogenic, or mutagenic effects (OECD test data).
Environmental behavior:
Soil degradation:
Rapidly decomposed by soil microorganisms (such as Pseudomonas, Bacillus), with a half-life of 6-10 weeks (degradation is fastest at 25°C and pH 6.5-7.5), with no long-term residue.
Ecological impact:
It has low acute toxicity to bees and birds (LD₅₀ > 100 μg/bee), but is sensitive to aquatic plants (such as duckweed), so direct discharge into water bodies should be avoided.
Formulations and Usage Precautions:
Common Formulations:
Aqueous solutions: 25%, 30%, 41% glyphosate potassium salt aqueous solutions (mainstream formulations, convenient for spraying after dilution);
Soluble granules: 75%, 85% glyphosate potassium salt soluble granules (high concentration, not easy to freeze-thaw during transportation and storage);
Compound formulations: Glyphosate potassium salt + glufosinate-ammonium (enhances quick-acting effect), glyphosate potassium salt + 2,4-D (expands control effect on broad-leaved weeds).
Usage Points:
Directed spraying: A protective cover must be installed to avoid drift of the liquid to green leaves and tender shoots of crops (especially broad-leaved crops such as tomatoes and cucumbers);
Application timing: Spray during the 3-6 leaf stage (vigorous growth period) of weeds; for perennial weeds (such as reeds), increase the dosage (recommended dosage is 1.5-2 times the conventional dosage);
Soil taboos: It binds to calcium and magnesium ions and becomes inactive after entering the soil, so it is only used for foliar treatment and cannot be used for soil closure;
Pre-harvest interval: Use 14-21 days before sowing or harvesting of crops, with a maximum of 2 applications per season.
Reviews
There are no reviews yet.