Crop Protection :: Pest of Sugarcane
White Grub: Holotrichia consanguinea |
Symptom:
- Yellowing and wilting of leaves.
- Drying of entire crown.
- Affected canes come off easily when pulled.
- Cause extensive damage to roots and base of shoot.
- Affected canes shows lodging in the field.
- Damages can seen more in ratoon crop when compare to plant crop
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Yellowing of leaves |
Drying of entire crown |
Affected canes |
Infected root |
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Identification of pest:
- Egg: A female lays on an average of 27 eggs in the soil, which are pear like and enclosed in earthen cells.
- Grub: Fleshy ‘C’ shaped, whitish yellow in colour found close to the base of the clump.
- Pupa: Pupae are tan to brown, and occur deeper in the soil in earthen chambers.
- Adult: Adult beetles are a rusty-red colour just after emerging from the pupal stage, but turn nearly black.
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Grub |
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Adult |
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Management:
Cultural method:
- Provide adequate irrigation.
- Deep ploughing immediately after harvesting.
- Avoid ratoon cropping
- Stagnating water for 24hrs in the field then the grub will come out from the soil
Physical method:
- Collect and destroy the adult beetles, harbouring in near by Neem, Ailanthus, and Acacia trees immediately after the summer showers using using powerful petromax lights as a mass campaign in areas near to forest and hilly regions.
Biological method:
- Apply Beauveria brongniortii @ 2.5 kg/ha (1*109 cfu/g) entopathogenic fungal formulation along with FYM at the time of planting in endemic regions.
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Content Validators:
Dr.V.Jayakumar, Senior Scientist (Plant Pathology), Sugarcane Breeding Institute, Coimbatore -641007.
Dr.T.Ramasubramanian, Senior Scientist (Entomology), Division of Crop Protection, Sugarcane Breeding Institute, Coimbatore -641007.
Dr.M.Ravi, Assistant Professor (Entomology), Krishi Vigyan Kendra, Sirugamani- 639115. |
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