Thiabendazole, also known as thiazolone or defoliant, is a substituted urea compound that functions as a plant growth regulator with kinetin-like activity. At low concentrations, it can induce callus differentiation in certain plants, promote fruit set, enhance leaf coloration, and delay the aging of foliage. For example, applying a 2 mg/L solution to cucumber plants helps open female flower receptacles, leading to better fruit set and increased individual melon weight. After harvesting celery, spraying the green leaves with a solution of 1–10 mg/L can extend the period of leaf greening. During the flowering stage of grapes, applying a 0.1% soluble liquid diluted 250–330 times can boost yield.
Thiabendazole is primarily used as a defoliant in cotton cultivation. When sprayed at the appropriate time, the cotton plant absorbs the chemical through its leaves, promoting the formation of an abscission layer between the petiole and the stem. Within seven days, the green leaves fall off, along with the stems, without leaving dead foliage on the surface. This makes mechanical or manual harvesting easier and reduces leaf contamination on the cotton lint. It also helps the cotton bolls mature more quickly and uniformly, increasing the yield before the first frost. Using thiabendazole can advance cotton maturity by about ten days, which is beneficial for winter wheat planting schedules.
The product is available in two forms: 0.1% soluble liquid and 50% wettable powder. When applying it to cotton, the dosage depends on factors such as plant height, density, temperature, and humidity. About 20 days before the first frost, when the cotton bolls begin to open, use 50–40 grams of the wettable powder per mu (approximately 667 square meters), mixed with 30–50 kg of water, and spray the entire plant. Leaf drop usually begins 7–10 days after application, and boll development peaks around 15 days later.
**Pesticide Network Tips:** Be cautious with the timing of application. Applying too early may cause young bolls to fall off, negatively affecting the overall yield. Always follow the recommended guidelines to ensure optimal results and minimize risks.
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Neglecting elevator door equipment jeopardizes riding public safety and increases owner liability. Modernizing elevator door equipment is important in making an older elevator system more reliable, safe, code compliant, efficient, and provides a more marketable appearance. This is particularly true with door operators. Door operators undergo tremendous wear and tear in daily operation. Each time the elevator stops, the door operators are activated at least two times, more frequently if occupants manually hold the doors open. Some elevator maintenance companies report that nearly 75 percent of their service calls are for malfunctioning door operators
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