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Evaluation of Newer Insecticides aganist Brown Planthopper ...- best insecticide for brown planthopper brown ,mean efficacy after first spray inferred that pymetrozine 50 WG @ -0.5 g l 1 was effective in suppressing the pest population and was on par with dinotefuran, buprofezin and sulfoxaflor. Table 1 Efficacy of new insecticide molecules against brown planthopper, Nilaparvata lugens after first spray …Fitness costs of laboratory-selected imidacloprid ...Imidacloprid has been used as a key insecticide to control the brown planthopper, Nilaparvata lugens Stål, for several years, but no obvious resistance has been identified in field populations as yet. To evaluate the risk, a field population was collected and selected with imidacloprid in the labora …



Comparative efficacy of newer insecticides against brown ...

Philippines, and Sri Lanka received the insecticides before outbreak. Detailed investigations have been made in the past few years on the insecticide induced BPH resurgence in rice (C helliah, 1979; Chelliah and Heinrichs, Comparative efficacy of newer insecticides against brown planthopper…

The evolution of insecticide resistance in the brown ...

The brown planthopper, Nilaparvata lugens, is an economically important pest on rice in Asia. Chemical control is still the most efficient primary way for rice planthopper control. However, due to the intensive use of insecticides to control this pest over many years, resistance to most of the classes of chemical insecticides has been reported.

(PDF) BIOEFFICACY OF COMMONLY USED INSECTICIDES …

The field experiments were conducted for evaluation of Dinotefuran, a third generation neonicotinoid insecticide, against brown planthopper (BPH) in farmer’s field at Sahebganj village (Block ...

Comparative efficacy of newer insecticides against brown ...

Philippines, and Sri Lanka received the insecticides before outbreak. Detailed investigations have been made in the past few years on the insecticide induced BPH resurgence in rice (C helliah, 1979; Chelliah and Heinrichs, Comparative efficacy of newer insecticides against brown planthopper…

Fact sheet - Rice brown planthopper (064)

Overuse of insecticides is the main cause of outbreaks of brown planthopper. When insecticides are used, predators and parasites are killed, and brown planthopper populations "resurge", i.e., the numbers after spraying are higher than before; this is because there are no natural enemies. Integrated Pest Management - IPM - programs stress the ...

(PDF) Calamansi [Citrofortunella microcarpa (Bunge ...

Brown planthopper or BPH (Nilaparvata lugens Stål) is an economically important rice pest in Asia. The use of synthetic-based insecticides was found to be effective against BPH.

Control rice diseases and plant hopper to increase rice ...

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.

Long-term seasonal forecasting of a major migrant insect ...

Jul 24, 2018·The brown planthopper (BPH), Nilaparvata lugens (Stål), is the pre-eminent insect pest of rice in Asia, due to devastating feeding damage to the crop (‘hopperburn’) and through the transmission of virus diseases of rice (Bottrell and Schoenly 2012; Cheng 2009, 2015; Otuka 2013; Heong et al. 2015).During heavy outbreaks, BPH can cause almost total crop failure, damaging up to …

The evolution of insecticide resistance in the brown ...

Mar 15, 2018·The brown planthopper, Nilaparvata lugens, is an economically important pest on rice in Asia. Chemical control is still the most efficient primary way for rice planthopper …

Sulfoximine: A novel insecticide for management of rice ...

of selected insecticides were done at 15 days interval with pneumatic knapsack sprayer at 500 L/ha of spray volume. Visual sampling method was followed for counting the brown planthopper population. In modification to the method standardized by Reissig et al. (1986) for visual counting of brown planthopper, five hills were

Insecticide resistance in the small brown planthopper ...

Local differences in the resistance to malathion and carbaryl (NAC) of strains of Laodelphax striatella (Fall.) collected from five districts of South Korea were studied in 1973. The insecticides were applied topically to the sternum of adults of these strains and of a susceptible laboratory strain that had been reared since 1970 without exposure to any insecticide.

Current status of insecticide resistance in the small ...

Nov 27, 2010·The small brown planthopper, Laodelphax striatellus, is one of the most serious pest insects of rice plants. A large migration of the insects from overseas was reported in western parts of Japan in June 2008. Insecticide resistance to imidacloprid, fipronil and BPMC was compared among local populations in these western regions after migration.

Long-term seasonal forecasting of a major migrant insect ...

Jul 24, 2018·The brown planthopper (BPH), Nilaparvata lugens (Stål), is the pre-eminent insect pest of rice in Asia, due to devastating feeding damage to the crop (‘hopperburn’) and through the transmission of virus diseases of rice (Bottrell and Schoenly 2012; Cheng 2009, 2015; Otuka 2013; Heong et al. 2015).During heavy outbreaks, BPH can cause almost total crop failure, damaging up to …

Planthopper - IRRI Rice Knowledge Bank

Two species of planthopper infest rice. These are the brown planthopper (BPH), Nilaparvata lugens (Stal); and the whitebacked planthopper (WBPH), Sogatella furcifera (Horvath). What it does. High population of planthoppers cause leaves to initially turn orange-yellow before becoming brown and dry and this is a condition called hopperburn that kills the plant.

FEEDING BEHAVIORS OF THE BROWN PLANTHOPPER AND …

11. FEEDING BEHAVIORS OF THE BROWN PLANTHOPPER AND VARIETAL RESISTANCE OF RICE TO THIS INSECT Kazushige SOGAWA* Introduction 195 h A,:fan and Pacific regions the brown planthopper, Nilaparvata lugens (Stal), is weU-lrnmvn as a serious insect pest ·which outbreaks sporadically and causes destructive

Chemical Control of the Brown Planthopper in Japan

The brown planthopper, Nilaparvata lugens, ... sive use of insecticides has been adopted since ... A second best timing was also found at the BHC DDT Malathion Fenitrothion Diazinon MTMC Carbary! MIPC 0.5 JARQ Vol. 18, No. 3, 1985 corresponding stage of 2nd generation when

Evaluation of Newer Insecticides aganist Brown Planthopper ...

mean efficacy after first spray inferred that pymetrozine 50 WG @ -0.5 g l 1 was effective in suppressing the pest population and was on par with dinotefuran, buprofezin and sulfoxaflor. Table 1 Efficacy of new insecticide molecules against brown planthopper, Nilaparvata lugens after first spray …

Long-term seasonal forecasting of a major migrant insect ...

Jul 24, 2018·The brown planthopper (BPH), Nilaparvata lugens (Stål), is the pre-eminent insect pest of rice in Asia, due to devastating feeding damage to the crop (‘hopperburn’) and through the transmission of virus diseases of rice (Bottrell and Schoenly 2012; Cheng 2009, 2015; Otuka 2013; Heong et al. 2015).During heavy outbreaks, BPH can cause almost total crop failure, damaging up to …

Untangling cross resistance patterns in the brown planthopper

In many countries, rice is a staple crop within people’s diets. There are many insect pests to rice. 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 …

Fact sheet - Rice brown planthopper (064)

Insecticides should only be used when plantshopper populations are likely to reach an economic injury level; otherwise natural enemies will be destroyed and planthopper populations will return greater than before. The systemic insecticide, Orthene (acephate), has been used for many years against the brown planthopper in Solomon Islands.

Insecticide resistance in the small brown planthopper ...

Local differences in the resistance to malathion and carbaryl (NAC) of strains of Laodelphax striatella (Fall.) collected from five districts of South Korea were studied in 1973. The insecticides were applied topically to the sternum of adults of these strains and of a susceptible laboratory strain that had been reared since 1970 without exposure to any insecticide.

Fitness costs of laboratory-selected imidacloprid ...

Imidacloprid has been used as a key insecticide to control the brown planthopper, Nilaparvata lugens Stål, for several years, but no obvious resistance has been identified in field populations as yet. To evaluate the risk, a field population was collected and selected with imidacloprid in the labora …

Control rice diseases and plant hopper to increase rice ...

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.

(PDF) BIOEFFICACY OF COMMONLY USED INSECTICIDES …

The field experiments were conducted for evaluation of Dinotefuran, a third generation neonicotinoid insecticide, against brown planthopper (BPH) in farmer’s field at Sahebganj village (Block ...