Methods for controlling multi肉粉虱
A detailed introduction about floral clinic experiences, methods for controlling multi肉粉虱, is as follows:
Many hobbyists enjoy growing multi肉 plants, but they are more challenging to cultivate compared to other flowers. The most difficult pest to control is the scale insect, especially on Sedum species. Summer is the peak season for scale insects. I have also planted several multi肉 plants, unfortunately, they were infested by the powder虱. I work for a pesticide company, so I am familiar with pest control. However, the effectiveness of different pesticides varies. Emulsions or emulsifiable concentrates are generally less effective than powder formulations, and multi肉 plants are sensitive to water.
Common pesticides used to control powder虱 in multi肉 plants:
1. 40% Emulsifiable concentrate of fenvalerate Contact kill, stomach poison, penetrate, non-systemic
2. Bayer's small green pesticide (ethoprophos, diazotophos) Contact kill, stomach poison, fumigation, organophosphate, highly toxic
3. 1.8% Abamectin emulsifiable concentrate Contact kill, stomach poison, low toxicity, slow lethal effect
4. 75% Acetamiprid water-soluble powder Contact kill, stomach poison, systemic, low toxicity, good solubility
Scale insects are one of the top three piercing-sucking pests in landscaping,危害 multiple plants and are difficult to control. They thrive in hidden environments with dense foliage and poor ventilation. Multi肉 plant leaves are often dense, creating an ideal environment for scale insect growth.
There are many methods for controlling scale insects, generally including the following:
1. Physical method: Use needles, toothpicks, or tweezers to kill them one by one. Disadvantage: Too time-consuming.
2. Alcohol method: Use medical disinfectant alcohol, 75% concentration. Dip a brush in the appropriate amount of alcohol and wipe the affected area repeatedly to remove the scale insects, which can be done cleanly and thoroughly. Disadvantage: Alcohol may drip into the flower heart, potentially causing the death of the plant.
3. Pesticide control: Some hobbyists alternate between pesticides like flower protectant, fenvalerate, matrine, chlorpyrifos, abamectin, and Bayer's small green pesticide. However, the results are not always ideal. Sometimes, high concentrations of emulsions can cause damage to the leaves or pollute them; Bayer's small green pesticide is a highly toxic pesticide, which is banned for use on vegetables, fruits, and ornamental plants.
Older hobbyists are usually familiar with the pesticide methamidophos, a highly toxic pesticide that was very effective, with the saying “apply pesticides in front, insects fall off behind”. However, this is a highly toxic pesticide, which was banned by the country in 2007. The alternatives to methamidophos are now available, including 30% Acetamiprid emulsifiable concentrate and 75% Acetamiprid water-soluble powder. Both can be used, but the 30% Acetamiprid emulsifiable concentrate is not as effective as the 75% Acetamiprid water-soluble powder and is less safe for multi肉 plants.
75% Acetamiprid water-soluble powder has five major effects: fumigation, penetration, contact kill, stomach poison, and systemic action. It is a low-toxicity pesticide that can directly act on the insect through the wax shell of scale insects, killing both nymphs and adults, and also has good control over eggs. Attention should be paid to the concentration, generally 1200 times is suitable and does not cause phytotoxicity. It is recommended to test the concentration first, as Sedum and other multi肉 plants may react differently.
4. Burial method: Using the above methods can kill visible scale insects, but most of the eggs are in the soil, and they will hatch and crawl up again. Additionally, there are root scale insects at the base of the plant. Burial can eliminate scale insects in the bud. If using burial, furadan and Bayer's small green pesticide are both options, but these are highly toxic pesticides and must be used with caution. The 75% Acetamiprid water-soluble powder is a low-toxicity pesticide, the powder can be directly buried in the soil, it has contact kill, stomach poison, and systemic action, long-lasting effect,不怕 rain, and low cost.
It is important to note that both spraying pesticides and soil treatment with pesticides require special attention, especially in households with children. Children should not be allowed to touch pesticides, especially furadan and Bayer's small green pesticide, which are banned in some countries. It is recommended to purchase low-toxicity pesticides such as 75% Acetamiprid water-soluble powder.
The above introduction to the methods for controlling multi肉 powder虱 is hoped to provide some floral knowledge to flower enthusiasts.