Prohibited or cautiously used pesticides in flowers
Flowers and other ornamental plants are more sensitive to pesticides, improper use of pesticides, light cases of falling leaves, flowers, fruit drop, serious cases lead to plant death.
Dimethoate, omethoate: particularly sensitive to kiwifruit, avoid use; to plum blossom, cherry blossom, peach, elm leaf plum, stick stem begonia, apricot, pear and other Rosaceae ornamental plants, have obvious drug damage. The above ornamental plants are not suitable to use dimethoate and omethoate.
Dichlorvos: obvious drug damage to ornamental plants such as plum blossom, cherry, peach, apricot, elm leaf plum, 20th century pear, Jingbai pear, etc., usually other kinds of insecticides should be used. Rhododendron, steamed bread willow, kiwifruit, Robinia pseudoacacia, walnut and melons should be very cautious when using pesticides to control these plant pests.
Trichlorfon: it has harmful effects on cherry blossoms, plum blossoms, Jinshuai varieties in apples and so on.
Stone-sulfur mixture: it is harmful to peach, plum, plum, pear and other Rosaceae plants. If stone-sulfur mixture is used on these plants, spray it in the deciduous season, do not use it in the growing season or during the flowering and fruit period.
Bordeaux liquid: sensitive to peaches and plums in the growing season; pears, apricots and persimmons are prone to drug damage when the amount is lower than the multiple amount, and grape is prone to drug damage when the amount is higher than the accompanying amount.
Petroleum emulsion: it is easy to cause drug damage to some peach varieties and is used in the deciduous season.
In order to prevent pesticides from causing drug damage to many ornamental plants, the first is to purposefully switch to other high-efficiency and non-harmful pesticides; the second is to reduce the concentration as far as possible; the third is not to spray under the condition of high temperature and humidity.