How to use Roundup

Roundup: Literally, it can be seen that it is a pesticide with an ingredient content of 41% glyphosate isopropylamine salt. It is a herbicide used to kill weeds in the field. The method of use is directional spraying, the dosage is 200-480ml per 667 square meters, and 15kg of water is added to every 100ml of spray. The amount can be increased according to weather conditions.

The physical and chemical properties are that the pure product is a non-volatile white solid with a false specific gravity of 0.5. It melts at about 230C and is accompanied by decomposition. Its solubility in water at 25°C is 1.2, and it is insoluble in general organic solvents. Its isopropylamine salt is completely soluble in water. It is non-flammable, non-explosive and stable when stored at room temperature. The original drug contains 95 active ingredients and a melting point of 200°C. It has a corrosive effect on medium carbon steel and galvanized iron.

The preparation contains glyphosate isopropylamine salt 41 (equivalent to 350 g/L of glyphosate), surfactant and water. The appearance is amber and transparent. Liquid, specific gravity 1.17, boiling point greater than 100°C, non-flammable, non-explosive. Storage period at room temperature is more than 2 years.

Extended information:

Roundup application technology:

1. Due to the different sensitivities of various weeds to Roundup in fruit, mulberry, tea and rubber plantations, the dosage is generally sprayed during the vigorous growth period of the weeds, before flowering or at the beginning of flowering. , use a water volume of 20 to 30 liters per mu, spray the stems and leaves of weeds evenly and avoid contact with the green parts of saplings, but tea trees have a high tolerance to Roundup

2. Cotton fields. Before cotton is sown or transplanted, if weeds have emerged in the field, use 100 to 200 ml of 41 Roundup per acre and 20 to 30 liters of water to evenly spray the weed stems and leaves above 30 to 40 cm high or in budding condition. During this period, directional spraying can be carried out between the rows, with the nozzle depressed and a protective cover installed to prevent the mist from drifting onto the cotton leaves and causing phytotoxicity.

3. No-till cultivation of farmland is harmful to rice, wheat, rice and other crops. For rape, wheat and corn rotation plots and no-till direct seeding rice fields, 100-300 ml of Roundup 41 can be sprayed per acre during the cropping period after the previous crop is harvested. Generally, no plowing is required 1-3 days after spraying. Sowing or transplanting directly into the soil. This no-till method is very beneficial to shorten the farming time, and can achieve satisfactory weeding effect, saving time and cost.

4. Rice field ridges. The rice area is vast, and the problem of weeding on the ridges is gradually being paid attention to. You can spray 200-400 ml of 41 Roundup per acre with 20-30 liters of water, and spray evenly on the weeds before or after transplanting the rice. It is necessary to lower the nozzle and add a protective cover. It is best to spray in the morning when there is no wind. Do not spray under windy conditions to avoid causing the fog points to drift to the rice.

5. Leisure land, Roundup is suitable for weeding in irrigation and drainage ditches, roadsides, and non-arable land. During the period of vigorous growth of weeds, use 300 to 500 ml of 41 Roundup per acre, and evenly spray the stems and leaves of weeds with 20 to 30 liters of water. Can achieve ideal weeding effect

Reference: Baidu Encyclopedia-Roundup