What pesticides are effective against rice leaf roller?

What pesticides are effective against rice leaf roller? Please introduce the rice leaf roller, also known as rice leaf roller, commonly known as scraping green worm, white leaf worm, leafworm, etc., which are the main pests in the growing period of rice. The pest harms rice with larvae, affixes the leaves into a longitudinal bud, hides and eats the upper epidermis and mesophyll, and the symptom is that only the white lower epidermis is left in the damaged leaves. When the paddy field has a high population density, white leaves can be seen in the field, which seriously affects the normal growth, development and yield of rice. if it is light, it will reduce the yield by 20%, and if it is heavy, it can reach 50%. Therefore, chemical control must be strengthened in order to effectively reduce the harm. In recent years, agricultural technicians in various places have screened out a number of safe and efficient pesticides for the control of rice leaf roller through a large number of investigations, experiments and demonstrations, which can be used as a reference for all localities. Here is an introduction as follows: prevention and treatment agents: 50% Regent suspension 40 ml or 5% Regent suspension 25 ml + 20% triazophos EC 60 ml or 35% spike EC 80 ml or 35% vertical roll clear wettable powder 80ml 100g or 20% green defol microemulsion 50ml or 98% Padan wettable powder 40g or 40% Pole EC 60ml or 40% chlorpyrifos EC 75100ml (used in the egg hatching peak) or 40% of the new agricultural insurance EC 60ml and so on. At the same time, we should pay attention to grasp the control index, that is, if there are 20 larvae per 100 clumps or 3000 new buds per 100 square meters (mu) and more than 15 larvae before and after booting stage, we should spray them in time. In addition, pesticides are used by spraying paddy fields evenly with 50 kg of water during the peak period of young larvae. Click to get more pesticide application techniques