Agriculture Entomology Study Point
Subject:- Agriculture Entomology
Agriculture Entomology Study Material
1.Insect Attract By Trap crop AgriExam.Com
| Trap crop | Insect |
| Bhendi | Cotton Jassids & Spotted boll worms. |
| Tur | Cotton gray Weevil |
| Castor | Citrus Fruit sucking moth |
| Mustard | Cabbage aphids & Diamond back moth (DBM). |
| cow pea or onion | Boll worms |
| Suru sugarcane(2-3 month early sowing) | sugarcane Early shoot borer. |
| Kharif Jowar (sowing before 7 July) | Jowar shoot fly. |
2.Different Biological Agent & Their Examples
| Biological agent | Examples AgriExam.Com |
| True parasites | Mosquitoes, lice, bed bugs. |
| Parasitoid |
Parasitic Wasps, Tachinid flies, Trichogramma spp.
|
| Predators | Mantids, lady bird beetles, spiders etc. |
3.Insect Control By Different Predators
| Predators | Control Insect |
| Chrysoperla carnea | Aphids, Jassid, white fly etc. |
| Cryptolaemus montromouzeiri | Mealybugs |
| Sticolotis modagasa | Sugarcane scales. |
| Rodolia cardinalis | Cottony cushion scale. |
4.Mouth Parts of an Insect
| Mouth Parts | Their Works AgriExam.Com |
| Maxilla | Cutting of Food. |
| Mandible | Crushing of food. |
| Labium | It acts like lower lip. |
| Labrum | It acts like upper lip. |
| Hypopharynx | It works like Tongue. |
5.Types of Reproduction in insects
| Reproduction System | Insect AgriExam.Com |
| Oviparity | Higher order |
| Viviparity | Aphids |
| Parthenogenesis | Aphids |
| Paedogenesis | Cicidomylids |
| Polyembrony | Parasites |
| Hermaphrodism | Scale insects. |
- Oviparity:- Female lay eggs either fertilized or unfertilized.
- Viviparity:- The female lay either larva or nymph instead of eggs.
- Parthenogenesis:- It is development of embryo egg without fertilization.
- Paedogenesis:- The immature forms before attaining adult stage reproduce.
- Polyembrony:- Production of two or more embryos from a single egg.
- Hermaphrodism:- Presence of both male and female reproductive organs in one and the same individual.
6.Toxicity Level & Their Indicate Colour AgriExam.Com
| Toxicity Level | Insecticide | Colour |
| Extremely toxic (LD 50 upto 5 mg/kg) | phorate | Red colour |
| Highly toxic (LD 50 between 6 to 99 mg/kg) | Phosphamidon | Yellow colour |
| Moderately toxic (LD 50 between 100 to 499 mg/kg) | Dimethoate | Blue colour |
| Slightly toxic (LD 50, 500 mg/kg and above) | Malathion, carbaryl. | Green Colour |
Agriculture Entomology Study
| More Entomology Study Material | Open |
| More Agriculture Study Material | Open |
| Premium Study Material & Test Series | Open |
Good content
you are such a nice guy whatever who you are…..
I don’t know who r u….but you are such good person….than you
The best content thanku so much