What kind of pesticide cannot be sprayed on flowers and fruit trees?
Due to the different types of flowers and the differences in the stages of growth and development, some common flowers often cause drug damage when using pesticides, such as falling leaves in light cases and plant death in serious cases, resulting in great losses. Therefore, for the ornamental plants which are sensitive to pesticides, it is particularly important to select pesticides correctly. The following is an introduction to the drug damage caused by common pesticides.
Dimethoate and omethoate: kiwifruit is particularly sensitive and should not be used; it can cause obvious drug damage to Rosaceae ornamental plants such as plum blossom, cherry blossom, elm leaf plum, sticking begonia, apricot and pear, and dimethoate prawn flower and coral flower are also very harmful. Spraying omethoate in October often makes the petals withered and loses its ornamental value.
Dichlorvos: dichlorvos is obviously harmful to ornamental plants such as plum blossoms and cherry blossoms, as well as peaches, apricots, 20th century pears and Jingbai pears. Usually, other kinds of pesticides should be used. Dichlorvos also has varying degrees of drug damage to rhododendron, steamed bread willow, kiwifruit, Robinia pseudoacacia, walnut and so on. When using pesticides to control these plant pests, we should be very careful so as not to cause unnecessary losses.
Trichlorfon: it is harmful to cherry blossoms, plum blossoms and so on.
Stone sulfur mixture: it is harmful to peaches, plums, plums, pears and other plants. If it is used on these plants, spray it in the deciduous season, do not use it in the growing season or during the flowering and fruiting season.
Fenitrothion: fenitrothion is used to kill insects in high temperature season, which is harmful to pomegranate and cruciferous flowers to a certain extent.
Bordeaux liquid: peaches and plums are sensitive in growing season; pears, apricots and persimmons are prone to drug damage when the amount is lower than the multiple, and grape is prone to drug damage when the amount is higher than the multiple.