Prodioctes haematicus

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Prodioctes haematicus
Scientific classification
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P. haematicus
Binomial name
Prodioctes haematicus
L.A.A.Chevrolat, 1885

Prodioctes haematicus, commonly known as rhizome weevil, is a species of weevil native to India and Sri Lanka. It is one of the common pest on cardamom and ginger. [1] [2]

Contents

Description

This small weevil has a body length of 12 mm. Adult is brown in color. [3]

Biology

Adult weevil lays eggs in the cavities made on rhizome. Egg period is about 8 to 10 days. Grub is usually found inside the rhizome where they make tunnels and feed on the rhizome causing death of entire clumps of cardamom. Grub period is about 21 days. Larvae become full fed within three weeks. Final grub starts to pupate in the feeding tunnels. Pupal period lasts for 21 days. Lifespan of the adult is about 7 to 8 months. Adult completes only one generation in a year. [3] Grub infestation is severe in the secondary nursery during November to January. [4] [5]

Grubs are also known to attack rhizomes of ginger where grubs bore into the pseudostem and cause dead hearts. [6]

Control

Adults and final grubs can be control by hand picking. Affected plants and seedlings can be destroyed and burn. Otherwise, base of the clump can be treated with chlorpyrifos, malathion or carbaryl pesticides. [3] [7] Infected ginger plants can be treated with monocrotophos, fenitrothion, endosulfan, nimbicidine or carbofuran 3G granules immediately after mother rhizome extraction. [8] [9]

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References

  1. Momin, G. C.; Firake, D. M.; Behere, G. T.; Baiswar, P. (2018). "Pest complex, biology and population dynamics of insect pests of ginger in northeast India". Indian Journal of Entomology. 80 (2): 244. doi:10.5958/0974-8172.2018.00077.9 . Retrieved 2021-08-26.
  2. Firake, D. M.; Joshi, S.; Rajappa, J. J.; Behere, G. T. (2018-12-01). "Invasive Hypogeic Mealybug, Formicococcus polysperes Williams (Hemiptera: Pseudococcidae) on Turmeric (Curcuma longa Linnaeus): A New Host Record". National Academy Science Letters. 41 (6): 341–343. doi:10.1007/s40009-018-0692-4. S2CID   92164533 . Retrieved 2021-08-26.
  3. 1 2 3 "CARDAMOM :: MAJOR PEST :: RHIZOME WEEVIL". www.eagri.org. Retrieved 2021-08-26.
  4. "Rhizome Weevil: KrishiMala". krishimala.com. Retrieved 2021-08-26.
  5. "PPE 322: Rhizome weevil". ecoursesonline.iasri.res.in. Retrieved 2021-08-26.
  6. "Biodiversity of Agriculturally Important Insects in North Eastern Himalaya: An Overview" (PDF). Indian Journal of Hill Farming. pp. 37–40. Retrieved 2021-08-26.
  7. "Plant Protection(Nursery)". www.celkau.in. Retrieved 2021-08-26.
  8. "Pests and Diseases Management in Ginger". vikaspedia. Retrieved 2021-08-26.
  9. "Ginger Package of Practices for Cultivation" (PDF). kiran.nic.in. Retrieved 2021-08-26.