When selecting herbicides, it should be noted that many herbicides are not suitable for use in gardens, flower nurseries and lawns.
1. Post-emergence herbicides to control broadleaf weeds. 2 A 4 chlorine, 2,4-D, Bendazosone, Baicao enemy, make it long, Huwei, Kezi Ling, good things up, etc., can not be applied in nurseries, gardens, horse gold lawn.
2. Post-emergence herbicides to control grass weeds. Effective post-emergence herbicides for control of grass weeds, such as high efficiency of grass cover, fine and stable killing, fine grass weeds, picking nets, funerals and sprays, should not be used on lawns of grasses. Such herbicides are used to control grasshoppers. Undergraduate weeds also hurt the lawn.
3, herbicides with a long duration of efficacy. Sulfonylurea herbicides such as chlorsulfuron, metsulfuron, benzulfuron, pyrazosulfuron, tosulfuron, ethametsulfuron, nicosulfuron, etc.; imidazolinone herbicides such as Pesticide; Heterocyclic herbicides such as fast killing crickets, Guangjuling and so on. These herbicides have a long duration in the soil. In nurseries that use these herbicides, flowers and seedlings planted three years later may be harmed. Metsulfuron will cause a spray of tall fescue lawns, which will cause yellow feces and death of tall fescue. Guangmianling can cause bleaching of turfgrass plants.
4. Herbicides that are toxic to the soil. Some herbicides such as amides, ureas, and triazobenzenes, as well as alachlor, acetochlor, fluometuron, saikocin, simazine, atrazine, paracetamol, and cottongrass. If these herbicides are applied on the lawn, they will affect the root system of the turfgrass in the presence of accumulated water, and will affect the development of the turfgrass; where it is continuously applied, it will cause deterioration and compaction of the soil structure and affect the soil around the turfgrass roots. Ventilation, which in turn causes turf plants to yellow.
5. Toxic or carcinogenic herbicides. Sodium pentachlorophenol and paraquat are highly toxic and are absolutely prohibited in nurseries and lawns. The herbicide ether has been banned in many countries due to carcinogenicity, and our country has been banned since 2000. Lasso is carcinogenic to animals and should not be used. Trifluralin has been banned in Europe due to carcinogenicity.
6, there is a drifting herbicide. The problem of pollution caused by the encroachment of the enemies such as the herbicides and the large grasshoppers is greater. Generally, there are flowers and seedlings around the lawn. Spraying herbicides such as paraquat and glutinous rice on lawns can easily affect the growth of surrounding flower seedlings.
7, odor herbicides. For example, the smell of 2 A 4 chlorine has irritating effects on humans. After inhalation, it will affect the human stomach, and it will also cause phytotoxicity to the seedlings. It should not be used.
8. Inactivated herbicides. Such as glyphosate (Rongda), paraquat (grams without a trace) and so on. Although some seedlings have a certain tolerance to low-dose glyphosate, sometimes glyphosate damage to seedlings is difficult to judge intuitively, and sometimes this kind of injury is slow, and when sprayed with glyphosate, it is inevitable. If there is drift, it will cause damage to sensitive flower seedlings around.
In short, in addition to the selection of herbicides to prevent direct damage to flower seedling lawns, it is also necessary to prevent potential, possible, and hidden damages, so as not to affect the yield, quality, and surrounding environment of flowers, seedlings, and lawns. Irreparable damage. To be used should pay attention to choose according to different needs, species, period of broad spectrum herbicide, moderate efficacy, eradication effect, no pollution of the herbicide.
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