Rice planthoppers include BPH, Nilaparvata planthopper and Nilaparvata planthopper. The three types of rice planthoppers have the same symptoms, and both adults and nymphs can harm rice. They all use their piercing-sucking mouthparts to pierce the stems, leaves, and ears of rice and absorb the juice from the rice plants. Because the plant nutrients are consumed, it directly affects the growth of the plant. From the outside, the leaves turn yellow and brown, the growth is inhibited, the plants are prone to lodging, the heading and fruiting are affected, and the yield is significantly reduced.
Today I will introduce to you a compound that can effectively control various rice planthoppers-Triflumezopyrim. It is a new mesogenic pyrimidinone insecticide developed by Corteva. It is a nicotinic acetylcholine receptor inhibitor and can effectively control Lepidopteran and Homoptera pests. It can effectively prevent and control pests such as rice planthoppers and prevent viral diseases transmitted by rice planthoppers. It has now become a new benchmark for rice planthopper control.
The mechanism of action and application of Triflumezopyrim
Triflumezopyrim acts on the nicotinic acetylcholine receptor (nAChR) of insects, but unlike most other insecticides that act on this receptor, it inhibits rather than activates it, making it a nicotinic acetylcholine receptor inhibitor. After insect poisoning, the person becomes sluggish and motionless without excitement or spasm, and then becomes paralyzed, paralyzed, and eventually dies.
The International Insecticide Resistance Action Committee (IRAC) classifies triflumezopyrim as Group 4E, a mesionic pesticide, which currently has only one active ingredient. Triflumezopyrim has no cross-resistance with other insecticides within the group (including neonicotinoid insecticides) or outside the group. Therefore, triflumezopyrim can not only effectively control rice planthoppers, but is also an important tool for comprehensive management or resistance management of rice planthoppers, setting a new benchmark for rice planthopper prevention and control. Indoor biological test results show that brown planthopper populations from Vietnam, Thailand, India and other countries are resistant to imidacloprid, but these resistant populations have no cross-resistance to triflumezopyrim. Even if rice planthopper populations develop metabolic resistance to a variety of insecticides, including neonicotinoids, Triflumezopyrim can still provide good and long-lasting control.
Triflumezopyrim is mainly used on rice, but can also be used on crops such as cotton, corn and soybeans. Triflumezopyrim has good systemic conductivity and permeability, and is resistant to rainwater erosion. It can be used for foliar spraying, seed dressing, grafting, and soil treatment. Field trials have confirmed that it can effectively control various rice planthoppers (including brown planthopper, gray planthopper, white-backed planthopper, etc.), leafhoppers, etc., with good quick-acting effect and long-lasting effect. In addition, triflumezopyrim can promote rice growth and has a good effect on improving quality and increasing yield.
Triflumezopyrim can be mixed with a variety of active ingredients. It includes not only tetrazoantraniliprole, chlorantraniliprole, cyantraniliprole, mebamectin benzoate, beflufenodiamide, methoxyfenozide, fenmethrin, fenfentrile, Insecticides such as avermectin can also be combined with the fungicides isothiastrobin, tricyclazole, etc., and can be used in nursery boxes, seed treatment, etc.
Triflumezopyrim can be mixed with a variety of active ingredients. It not only includes insecticides such as tetrazopyrmid, chlorantraniliprole, cyantraniliprole, mebamectin benzoate, chlorantraniliprole, methoxyfenozide, fenmethrin, pyrofenfenil and abamectin, but can also be combined with the fungicides isothiastrobin, tricyclazole, etc. for use in nursery boxes, seed treatment, etc. .
Summarize
Rice is an important food crop, and rice planthoppers are one of the most serious pests in rice production. They are explosive, covert and destructive, and are an important factor restricting high and stable rice yields. Due to long-term and large-scale use of pesticides, rice planthoppers have developed varying degrees of resistance to conventional pesticides such as pymetrozine, thiamethoxam, imidacloprid, and nitenpyram.
As the first commercialized mesogenic pyrimidinone pesticide, triflumezopyrim has set a new benchmark for the control of rice planthoppers due to its novel mechanism of action, good control effect, and low dosage. Triflumezopyrim can effectively prevent and control rice planthoppers and varieties that are resistant to conventional insecticides. It can also prevent a variety of viral diseases caused by rice planthoppers and is suitable for resistance management and comprehensive pest control.
At present, triflumezopyrim is still within the patent protection period. As triflumezopyrim is registered in more countries and regions, and more compound products and single-dose products are promoted and applied, its market size will continue to expand.
