write about paddy insects pests
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Crop Protection :: Pest of paddy
II. Main Field PestsPaddy stemborer: Scirpophaga incertulas
Symptom of damage:
Presence of brown coloured egg mass near leaf tip
Caterpillar bore into central shoot of paddy seedling and tiller, causes drying of the central shoot known as “dead heart”
Grown up plant whole panicle becomes dried “white ear”
Plants could be easily pulled by hand
Identification of insect pest:
Egg: are creamy white, flattened, oval and scale like and laid in mass and covered with buff coloured hairs
Larva: pale yellow with dark brown head
Pupa: White silken cocoon are found inside the stem
Adult:
Female moth: bright yellowish brown fore wings with a black spot possess a tuft of yellow hairs
Male moth: Smaller with pale yellow forewings without black spot
Dead heartWhite ear Chilo polichrysus
Larva
AdultChilo suppressalis
Larva
AdultScirpophaga incertulas
Larva
AdultSesamia inference
Larva
Adult
Management:
ETL: 25% Dead heart symptoms
ATL (Action Threshold Level): 2 egg masses/m2
At ATL release egg parasitoid, Trichogramma japonicum for the management of the rice yellow stem borer
Spraying Neem seed kernel extract controls stem borer
Clip the seedling tips before transplanting to eliminate egg masses and collect and destroy the egg masses in main field
Spray any one of the following insecticides
Phosalone 35 EC 1500 ml/ha
Acephate 75 % SP 666-1000 g/ha
Azadirachtin 0.03% 1000 ml/ha
Carbofuran 3% CG 25 kg/ha
Carbosulfan 6% G 16.7 kg/ha
Carbosulfan 25% EC 800-1000 ml/ha
CartapHydrochloride 50 % SP 1 kg/ha
Chlorantraniliprole 18.5% SC 150 ml/ha
Chlorantraniliprole 0.4% G 10 kg/ha
Chlorpyriphos 20% EC 1.25 l/ha
Fipronil 5% SC 1000-1500 g/ha
Fipronil 80%WG 50- 62.5 kg/ha
Flubendiamide 20% WG 125 g/ha
Flubendiamide 39.35% M/M SC 50 g/ha
Phosphamidon 40% SL 1250 ml/ha
Thiacloprid 21.7% SC 500 g/ha
Thiamethoxam 25% WG 100 g/ha
Triazophos 40% EC 625-1250 ml/ha
Hope this helps you
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