IBPS Agricultural Field Officer Study Material - Entomology

 Major pest & Disease of Rice, Wheat, Cotton, Chick pea, Sugarcane & their Management

• Rice stem borer (Scirpophaga incertutas) is -Monophagous

• Trichogramna is a n Egg parasitoid

• Silver shoot or onion leaf is caused by  Gall midge

• Vector of Rice tungro is - Green leaf hopper (Nephotettise spp.)

• Vector of Grassy stunt disease  - Brown plant hopper (Nilaparvata spp.)

• Chaffy grains with black spot is due to - Gundhi bug (leptocoris spp.)

• Family of Gundhi bug is   -      Alydidae

• Gundhi bug caused on the stage -  Milking stage

• Ufra disease of rice is due to    -       Ditylenehus angustus

• White grub is a - Bettle, Polyphages

• Serious pest of wheat -White grub & termite

• Ear cockle nematode is  -Anguina tritici

• Tundu/yellow ear rot disease is due to - Anguina tritici + Carynebacterium tritici

• Control of tundu disease is done by hot water treatment at Hot water treatment 50⁰C for 2 hours.      

• Wheat stem borer sesamia inferns attack in  -Night

• Name of rice yellow stem borer - Scirpophaga incertuls

• Highest consumption of pesticide in crop   -  Cotton (54%)

• Hooper burn in cotton is due to -        Amrasca biguttula

• Family of cotton white fly - Aleyrodidae

• Vector for cotton leaf curl virus is  - Bemisia tabaci

• Glaring of squares in cotton is due to - Spotted bollworm (Earias vitella)

• Rosetting of flowers due to - Pink bollworm (Pectinophora gossypiella)

• Double seed formation is due to -         Pink bollworm

• Large circular bore holes with faecal pellets is the symptoms of  -American bollworm (Helicoverpa armigera)

• Dysdercus cingulatus is known as  - Red cotton bug

• Bt formulation is used for - Early instars of bollworms

• Helicoverpa and Agrotisypsilon is the serous pest of  - Chickpea

• Greasy cut worm attack in  - Night

• Scientific name of Sugarcane shoot borer is  - Chilo infuscatellus

• Bunchy top appearance in sugarcane is due to  - Top borer (Scirpophaga excerptaels)

• Family of Top borer  - Pryalidae

• Pyrilla perpusilla (Fam. Lophopidae) is a  - Leaf hopper

• Biological control of borers  -    Trichograma Japonicun

• Distractive insect pest (DIP) Act was passed in the year  - 1914

• Insecticide act passed -  1968

• Pest occurs most frequently on cultivated crops - Regular pest

• Pest occurs in a few isolated localities is known as -    Sporadic pest

• Pest occurs in same area of year after year  -     Endemic pest

• Pest occurs in area in severe form  -      Epidemic pest

• Central plant protection training institute  -        Hyderabad

• Safest insecticide for honeybee -           Endosulphohn

• Pest population should be kept below -  Economic threshold level

• Serious pest of Rice is  -       Yellow stem borer

• What is the sequence of coating of seed by insect fungicide & Rhizobium  -   Fungicide + Insecticide + Rhizobium

• Family of shoot borer  - Crambidae

More Entomology Onemarks for IBPS SO - Agricultural Officer Preparation - Click here

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