You are currently viewing Recommendations on whether Bti mosquito larvicide should be used in these regions (based on water salinity) and, if so, the suggested dose (in parts per million, ppm)

Recommendations on whether Bti mosquito larvicide should be used in these regions (based on water salinity) and, if so, the suggested dose (in parts per million, ppm)

Recommendations on whether Bti mosquito larvicide should be used in these regions and, if so, the suggested dose (in parts per million, ppm):

Region/State Salinity (ppt) Mosquito Breeding Presence Bti Use Recommended Dose Remarks
Rajasthan 20 Moderate Yes 0.5–1.0 ppm Effective for breeding in Sambhar Lake and brackish waters.
Gujarat 35 Low No High salinity in the Rann of Kutch limits mosquito breeding.
Tamil Nadu 30 Moderate Yes 0.5–1.0 ppm Suitable for coastal breeding zones with moderate salinity.
Andhra Pradesh 25 High Yes 0.5–1.0 ppm Required for estuarine areas breeding Anopheles sundaicus.
Odisha 20 High Yes 0.5–1.0 ppm Effective in coastal brackish water regions.
West Bengal 15 High Yes 0.5–1.0 ppm Effective in Sundarbans where breeding occurs in moderate salinity.
Kerala 10 High Yes 0.5 ppm Suitable for mosquito breeding in backwaters and brackish water.
Maharashtra 10 High Yes 0.5 ppm Effective for mosquito breeding in coastal creeks.
Karnataka 8 High Yes 0.5 ppm Suitable for mosquito breeding along coastal saline zones.
Goa 8 High Yes 0.5 ppm Suitable for mosquito breeding in coastal saline water.
Punjab 5 Low No Minimal salinity and low mosquito breeding.
Haryana 5 Low No Primarily freshwater, low mosquito breeding.
Uttar Pradesh 2 Low No Predominantly freshwater, low mosquito breeding.

Key Observations:

  1. Regions Where Bti Should Be Used:
    • Coastal and brackish water regions with moderate salinity (8–25 ppt) support significant mosquito breeding. Examples include Tamil Nadu, Kerala, Andhra Pradesh, and West Bengal.
    • Recommended Dose: Bti application at 0.5–1.0 ppm is effective in these environments, depending on the mosquito density and water salinity.
  2. Regions Where Bti is Not Needed:
    • Areas with very high salinity (>30 ppt) (e.g., Rann of Kutch in Gujarat) or low salinity (<5 ppt) (e.g., Punjab, Haryana, Uttar Pradesh) generally do not support significant mosquito breeding.
  3. Application Frequency:
    • In saline and brackish water zones, reapply Bti every 7–14 days to maintain control over mosquito larvae.

Conclusion:

  • Use Bti larvicide in regions with 8–25 ppt salinity where mosquito breeding is common, such as coastal and brackish areas.
  • Apply 0.5–1.0 ppm Bti, depending on salinity and larval density.
  • Avoid unnecessary use in regions with low breeding potential or extreme salinity.

Disclaimer: This document is created using AI tools for ideation purpose,s and data should be verified at the user end

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Most low moderate Saline areas affected by Mosquito Breeding through out the year

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