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Package of Practices
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12
Jul

Management of Rice Gundhi bug

Chemical control: Spraying of Endosulphon 35 EC or Quinolphos 1.5% Dust @ 25 kg/ha, or Quinolphos 25 EC @ 1.5 liter in 500 liter water / ha is found to be highly effective in controlling the insect populations.
12
Jul

Biology of Rice Gandhi bug

Egg: Eggs are circular, brownish seed like, 2 mm long, laid in clusters in two rows along the midrib on the upper surface of the leaf-blade. Nymph: First instar is small, 2 mm long, pale green in colour, which grows to deepen green through different instars. Adult: Adults are greenish yellow, long and slender, above ½ inch in length with a characteristic buggy odour
12
Jul

Nature of damage of Rice Gandhi bug

1. Both adults and nymphs do the damage. The nymphs start feeding 3 to 4 hours after hatching. 2. They feed on the leaf sap near the tip/ on milky sap in developing spikelets at milky stage. Sucking of the milky sap causes ill-filled/ partial filled and chaffy grains. 3. Serious infestation can reduce the yield by 50%. The straw gives off-flavour that is unattractive to cattle.
12
Jul

Symptom of attack of Rice Gandhi bug

 

1. Leaves turn yellow and later rusted from tip downwards. Appearance of numerous brownish spots at the feeding sites / shrivelling of grains. 2. In the case of heavy infestation, the whole earhead may become devoid of mature grains. Its presence in the field is made out by its strong smell.
12
Jul

Rice Gundhi bug / Earhead bug

 

Latin name: Leptocorisa acuta, Alydidae Hemiptera Common name: Species: L. acuta
12
Jul

Management Rice leaf folder ( Patti lapetak)

Chemical control: Spraying of Endosulphon 35 EC or Quinolphos 25 EC @ 2 litres in 500 liter water / ha is found to be highly effective in controlling the insect populations.
12
Jul

Biology of Rice leaf folder ( Patti lapetak)

Egg: Flat oval yellowish eggs laid singly or in pairs on the undersurface of tender leaves. Larva: Larva is yellowish green in colour and translucent about 16-20 mm long. Pupa: It pupates inside the fold. Adult: Adult is small yellow coloured moth with dark wavy lines on both pairs of wings.
12
Jul

Nature of damage of Rice leaf folder ( Patti lapetak)

Larvae remain inside the fold and scrapping off green portion of the leaves leaving white patches
12
Jul

Symptom of attack of Rice leaf folder ( Patti lapetak)

 

Leaves folded longitudinally or transversely with silk and scrapped patches in such places.
12
Jul

Rice leaf folder ( Patti lapetak)

Latin name: Cnaphalocrocis medinalis, Pyralidae, Lepidoptera Common name: Patti lapetak Species: C. medinalis
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