Districts with soil like Kottayam

Ranked by how closely their soil tests match: the share of samples low or short in each nutrient, pH and salt.
  1. Pathanamthitta, Kerala Grows Coconut, Tapioca (Cassava), Rice Compare
  2. Kollam, Kerala Grows Coconut, Tapioca (Cassava), Banana Compare
  3. Thiruvananthapuram, Kerala Grows Coconut, Tapioca (Cassava), Banana Compare
  4. Ernakulam, Kerala Grows Coconut, Tapioca (Cassava), Banana Compare
  5. Uttara Kannada, Karnataka Grows Rice, Arecanut, Arecanut (Processed) Compare
  6. Kannur, Kerala Grows Coconut, Cashew, Arecanut Compare
  7. Kozhikode, Kerala Grows Coconut, Arecanut, Black Pepper Compare
  8. Kasaragod, Kerala Grows Coconut, Arecanut, Cashew Compare
  9. Palakkad, Kerala Grows Rice, Coconut, Banana Compare
  10. Malappuram, Kerala Grows Coconut, Arecanut, Rice Compare

Yields also depend on water, weather, seeds and farming practice, not only soil.

Source: Soil Health Card – soil nutrient analysis (Ministry of Agriculture & Farmers Welfare).