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19
Jul

Symptoms and Nature of damage of Whitebacked Plant hopper

Symptom of attack of Whitebacked planthopper:

1. Heavy infestation cause outer leaves of a hill to show burn symptoms.

2. Damage in the form of hopperburn appears uniformly in a rice field, whereas it appears as circular patches in the case of BPH.

Nature of damage of Whitebacked planthopper

19
Jul

Whitebacked Planthopper

Order: Hemiptera

Family : Delphacidae

Scientific name : Sogatella furcifera

Local Nme:

19
Jul

Control of Brown Plant hopper

• Spray carbaryl 50 WP @ 1500 g ha-1 or monocrotophos 36 WSC @ 1500 ml ha-1 or BPMC 50 EC @ 1000 ml ha-1 or acephate 50 WP @ 1200 g ha-1 or fipronil 5 SC @ 1000 ml ha-1 or imidacloprid 200 SL @ 125 ml ha-1 or ethofenprox 10 EC @ 750 ml ha-1 or thiamethoxam 25 WG @ 100 g ha-1 or clothianidin 50 WDG 30 g ha-1 or dust carbaryl 25 to 30 kg of the formulation ha-1.

• Repeat application if hopper population persists beyond a week after application.

• If 2 to 3 applica

19
Jul

Life stages of Brown Plant hopper

Egg: Eggs are laid in a group of 2 to 12 in leaf sheath (near the plant base or in the ventral midribs of leaf blades). White, transparent, slender cylindrical and curved eggs are thrust in straight-line in two rows. (They are covered with a dome-shaped egg plug secreted by the female. Only the tips protrude from the plant surface.)

Nymph: Freshly hatched nymph is cottony white, 0.6 mm long and it turns purple-brown, 3.0 mm long in the fifth instar.

19
Jul

Symptoms and Nature of damage of Brown Plant hopper

Symptom of attack of Brown Plant hopper: Symptoms will not be visible from outside in the early stages, but if we enter the field and tap the plants large number of this insect can be seen. They are visible only when the damage has been severe, the plants present a burnt up appearance, hopper burn, in circular patches.

19
Jul

Symptoms and Nature of damage of Brown Plant hopper

Symptom of attack of Brown Plant hopper: Symptoms will not be visible from outside in the early stages, but if we enter the field and tap the plants large number of this insect can be seen. They are visible only when the damage has been severe, the plants present a burnt up appearance, hopper burn, in circular patches.

19
Jul

Brown Plant hopper

Order: Hemiptera

Family : Delphacidae

Scientific name : Nilaparvata lugens

Local name :

19
Jul

Control of Green leafhopper

1.Use resistant varieties like IR 50, CR 1009, Co 46. 2. Apply neem cake @ 12.5 kg/20 cent nursery as basal dose. 3. Spray carbaryl 50 WP @ 900 g or Monocrotophos 36 WSC @ 850 ml ha-1 or BPMC 50 EC @ 600 ml ha-1 or Acephate 50 WP @ 950 g ha-1 or Ethofenprox 10 EC @ 500 ml ha-1 or Imidacloprid 200 SL @ 125 ml ha-1 or Thiamethoxam 25 WG @ 100 g ha-1 or Clothianidin 50 WDG 30 g ha-
19
Jul

Life stages of Green leafhopper

Egg: Greenish transparent eggs are deposited in the midrib of leaf blade or sheath of rice or green grass. They are laid in batches of 10 to 15 arranged in a single row.

Nymph: The nymphs are soft bodied, yellow white in colour. Gradually the colour changes to green.

19
Jul

Symptoms and Nature of damage of Green leafhopper

Symptoms of attack of Green leafhopper: Affected plants become pale yellow in colour and get stunted in growth. If the plants are tapped large number of leafhoppers may be seen jumping to water.

Nature of damage of Green leafhopper: Both nymphs and adults suck the plant sap from the leaf and leaf sheath. (It

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