What are brown planthoppers resistant to?
Of these pests, one of the most devastating to crops is the brown planthopper. Recently, in Asia, the brown planthopper has become resistant to various pesticides, including the frequently used imidacloprid.
How do you prevent brown plant hopper?
Chess is the most effective insecticide against the brown planthopper. It delivers immediate crop protection through permanent feeding inhibition. It minimize the damage, providing long duration control of brown planthopper, which will generate higher yield.
How do neonicotinoids work?
Neonicotinoids (also referred to as “neonics”) are insecticides derived from nicotine. They act by binding strongly to nicotinic acetylcholine receptors in the central nervous system of insects, causing overstimulation of their nerve cells, paralysis and death.
Why are neonicotinoids used?
Neonicotinoids are used to manage many honeydew-excreting pests, which are primary pests in most agricultural systems, including field crops, vegetables, fruit and nut production, tree plantations, and urban forests, suggesting that neonicotinoids used in these systems have strong potential to pass to nontarget species …
What is BPH in Paddy?
The brown planthopper (BPH), Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) is a planthopper species that feeds on rice plants (Oryza sativa L.). These insects are among the most important pests of rice, which is the major staple crop for about half the world’s population.
Where does the brown planthopper live?
The brown planthopper Nilaparvata lugens is a major pest of rice throughout India and south-east Asia. It can use many rice varieties as a host plant and can adapt rapidly to resistant varieties (Den Hollander & Pathak, 1981).
How do you control rice plant hopper?
Draining the rice field for 3-4 days is recommended during the early stage of infestation. Nitrogen application can be split to reduce Brown plant hopper buildup. Synchronous planting within 3 weeks of staggering and maintaining a free-rice period could also decrease the build-up of Brown plant hopper.
Which fungicide is best for Paddy?
Some of the commonly used triazoles in rice are propiconazole, tebuconazole, hexaconazole, difenconazole etc. They are good mixture partners with other fungicides and are used in combination with other single site/specific fungicides for increased disease control and resistance management.
What crops are neonicotinoids used on?
In summary, neonicotinoids are the most widely used class of insecticides by U.S. corn, soybean, wheat, cotton and sorghum farmers, with on average almost 56 percent of total planted acres for these crops treated with neo- nicotinoid insecticides.
How long do neonicotinoids stay in plants?
Most manufacturers of neonicotinoids indicate they will remain residual in a plant for at least a year and up to 2 years. Neonicotinoids are readily carried in sap, so they enter new plant tissues quite readily as a plant grows.
What crops use neonicotinoids?
Which chemical can be used for management of BPH in Paddy?
Brown plant hopper [BPH] can also transmit Paddy Ragged Stunt and Paddy Grassy Stunt diseases. These diseases cannot be cured. Draining the rice field for 3-4 days is recommended during the early stage of infestation. Nitrogen application may be given split doses to reduce Brown plant hopper buildup.