Leafy use of chemical pesticides pests

Chemical control is the use of chemical pesticides for insect pest control in a way. This approach has the advantage that large-scale production of chemical pesticides can, in large scale applications, control a wide range of fast effective agricultural production has become indispensable technology insect pest control measures. However, chemical control and disadvantages, namely long-term use of chemical pesticides alone, resulting in a lot of side effects. Such as insects, bacteria developed resistance, the result control effect is getting worse; in killing bacteria, insects also kill the natural enemies of pests and beneficial animals, destruction of the ecological balance, rose to make some minor pests major pest infestation heavier; also pollutes the environment, contaminating vegetables,garden pressure sprayer a direct threat to human health, so the rational use of chemical pesticides.

1 try to use pollution-free high efficiency and low toxicity pesticides or pesticide residue such as baking soda to control powdery mildew; potassium permanganate vegetables can prevent viral diseases; thiabendazole (Turk and more) can prevent gray mold; spraying nitrogen sugar (called nutritional prevention) can control downy mildew; Ai Fuding EC can prevent root knot nematode and leaf miner, etc.; buprofezin can prevent whitefly; pirimicarb can control aphids; diflubenzuron on the 3rd, chlorfluazuron buprofezin, agriculture special dream, stuck grams and other pesticides can prevent caterpillar, diamondback moth and other pests.

(2) According to pest occurrence, hand held sprayer timely medication vegetable diseases, early onset of drug use in general, only if serious medication ineffective. Some diseases, such as gray mold, bacteria mainly infect petals, followed by the stigma, small fruit. According to the law pathogen infection, prevention and control to advance to the flowering stage, the effect is very good. Another example is the pest, generally based on the control index medication, while the Lepidoptera larvae, spraying prior to age 3, otherwise poor results.