A Detailed Guide to Using Hexazinone Herbicide

Hexazinone can be applied in two forms: liquid formulation and granular formulation. For the liquid formulation, generally about 500 g per mu is diluted in about 30 kg of water and sprayed or poured onto the roots. The soil must be moist when applying; when drenching the roots, remove the fallen leaves on the soil surface above the tree roots. For the granular formulation, generally about 5 kg of granules per mu is mixed into about 60 kg of fine soil or fine sand and evenly broadcast on the forest soil surface. Rain must fall within about half a month after application to achieve the best efficacy; if there is no rain, water promptly.

1. What is the method of using hexazinone?

1. Liquid formulation: generally about 500 g per mu is diluted with about 30 kg of water. If the height of bamboo, trees and weeds is below 50 cm, one bottle per mu can be used; above that, about 3 bottles are needed. When adding water, add an appropriate amount of synergist; for example, laundry detergent, diesel oil, organosilicon and other agents can enhance adhesion and achieve the best efficacy. When spraying or pouring onto the roots, the soil must be moist; when drenching the roots, remove the fallen leaves on the soil surface above the tree roots.

2. Granular formulation: about 5 kg of granules per mu is mixed into about 60 kg of fine soil or fine sand and evenly broadcast on the forest soil surface. Rain must fall within about half a month after application to achieve the best efficacy; if there is no rain, water promptly. Generally, effects appear about one week after rain or watering; the plants die and roots begin to rot after about one month. If the temperature is low, the time for various poisoning and death symptoms will be prolonged. A small number of tree species will repeatedly sprout or shed leaves about 5 times before dying. If a small portion does not die, apply the chemical a second time once the new leaves grow to 7 leaves and they can be eliminated.

Note: when drenching the roots and spraying the plant leaves, for soil that has been sprayed with the chemical, be sure to wait until 6 months after application before planting crops, so as to avoid phytotoxicity.

2. What crops is hexazinone suitable for?

It is suitable for evergreen coniferous forests, such as the tending of young stands of Korean pine, Scots pine, spruce, Masson pine and others. It is used for weed and brush control before afforestation, maintaining forest firebreaks and garden renovation, and can control most monocotyledonous and dicotyledonous weeds and woody plants such as fly honeysuckle, false spiraea, hazel, willowleaf meadowsweet, Siberian ginseng, David poplar, birch, linden, Manchurian ash, Amur cork tree, Manchurian walnut and others.

3. When is the best time to use hexazinone?

It is suitable for spraying in rainy and foggy weather from March to August; the chemical is easily dissolved by water and can better penetrate into the ground, which helps root absorption. Application within 3 days of rain gives the best efficacy; it can be applied before light, moderate or heavy rain, but avoid applying during torrential rain so that the chemical is not washed away. If there is no rain, under moist soil conditions the dosage can also be appropriately increased for application.

The above is the relevant introduction to the methods of using hexazinone; I hope it is helpful to everyone.