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12
Jul

Management Rice Gall midge ( Sanrhakeet )

Chemical control: Carbofuran 3G @ 30 kg/ha is found to be highly effective in controlling the insect populations. Resistant variety: Lalat and Naveen are found to be resistant to this insect in Jharkhand state.
11
Jul

Biology Rice Gall midge ( Sanrhakeet )

Egg: The fly lays elongate, cylindrical, shinning white or red or pinkish eggs singly or in clusters (2-6) at the base of the leaves. Maggot: Maggot is 1 mm long after hatching with pointed anterior end. It creeps down the sheath and enters the growing bud. An oval chamber is formed round the site of feeding. Pupa: At the time of emergence the pupa wriggles up the tube with the help of antennal horn to the tip of the silver shoot and projects half way out. Adult: The adult fly is yellowish brown
11
Jul

Nature of damage Rice Gall midge ( Sanrhakeet )

1. The maggot bores into the growing point of the tiller and causes abnormal growth of the leaf sheath, which becomes whitish tubular and ends bluntly. 2. It may be pale green, pink or purplish. Further growth of tiller is arrested. This is called onion shoot or silver shoot. 3. The feeding by the maggot and the larval secretion, which contains an active substance called cecidogen, is responsible for cell proliferation of the meristematic cells and gall formation. 4. It is a pest in
11
Jul

Symptom of attack Rice Gall midge ( Sanrhakeet )

1. The central shoot instead of producing leaf produces a long tubular structure. 2. When the gall elongates as an external symptom of damage, the insect will be in pupal stage and ready for emergence
11
Jul

Management of Rice stem borer ( Tana bedhak )

1. In Nursery: In 10 - 12 days nursery plant, apply Carbofuran 3G @ 250 gm, or Forate 10G @100 gm per 100 m2 nursery area. 2. Roughing: Tillers showing dead hearts should be removed and their destruction must be outside the field, it reduces the infestation. 3. Biological control: Use 8 Trichochord (Bio-agent Trichogramma) three times (total 24 in numbers), at one week interval just after one month of transplanting for one hectare. 4. Chemical control: Cartop Hydrochloride 4G @ 20 kg/
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