Prevention and Rescue of Drug damage to Flowers and plants

I. symptoms of drug damage to flowers and plants

one. Acute drug damage. Drug damage occurs quickly, the symptoms are obvious, usually manifested as the emergence of freckles, focus or withering on the leaves; fruit freckles, deformities, smaller fruit, fruit drop; petal scorch, flower drop, bud drop; plant growth is slow, or even the whole plant dies.

two. Chronic drug damage. The symptoms are not obvious and it is not easy to distinguish them in a short time. Usually manifested as dysplasia, leaf loss of luster, flowering delay, small and few flowers, light color, flowers and fruits easy to fall, very similar to the symptoms of lack of nutrition.

II. Prevention of drug damage to flowers and plants

1. Use the medicine according to the instructions. Solemnly abide by the pleading operation of the drug instructions and do not use pesticides that are unknown due to the loss of the label. Do not arbitrarily increase the drug concentration and dose. If the use of standard dose and concentration can not achieve the desired control effect, the variety of pesticides should be changed.

two. Do not mix pesticides casually, so as to avoid drug damage.

III. First aid measures for drug damage to flowers and plants

one. Spray water flushing method. If you spray the wrong medicine, you should immediately spray a large amount of water to wash the plant; if you use the wrong soil solution, you can take the alternative method of irrigation and drainage to save the plant, and apply quick-acting fertilizer after washing to enhance the vitality of the affected plant.

two. Neutralization and mitigation method. If there is a mistake in the use of medicine and it is found in a timely manner, under the guidance of scientific and technological personnel, we can first wash it with water and then neutralize it with heterosexual pesticides, that is, the harm of acidic pesticides can be neutralized by alkaline pesticides. For example, after the use of dimethoate emulsion, alkaline pesticides such as stone sulfur mixture and methomyl can be used to neutralize dimethoate, or 200 times borax solution can be sprayed twice, which can be alleviated and the plant can be restored to normal.

three. Spray therapy. After the broad-leaved flower plants mistakenly use dimethyltetrachloride herbicide, the leaves become white. 50% sodium humate granules can be used to dissolve the water first with a small amount of water, and then turn the water into a 500-fold liquid, plant by plant, and the leaves can gradually restore their function after 5 days.

four. Fusion and detoxification. If spraying copper sulfate causes drug damage, it can be detoxified by spraying lime water with a concentration of 5% Mel 1%. The damaged seedlings can be replanted and the management should be strengthened.