Botanical characteristics and agroforestry role
Pongam is a nitrogen-fixing deciduous tree adapted to diverse ecological conditions across India.
- Thrives in semi-arid regions, saline soils, degraded wastelands, and waterlogged coastal tracts.
- Fixes atmospheric nitrogen through root nodule symbiosis, enhancing soil health in agroforestry systems.
- Produces dense foliage that yields organic leaf mulch and green manure.
- Deep taproot system prevents soil erosion along field bunds, riverbanks, and highway greenbelts.
Agricultural uses: Karanja oil and organic oil cake
Both the seed oil and the de-oiled cake are prized inputs in sustainable agriculture and organic pest control.
- Karanja Oil: Contains natural bioactive furanoflavonoids (karanjin and pongapin) with insect repellent, antifeedant, and antifungal properties.
- Effective against sucking pests, leafminers, and caterpillars when mixed with water and an emulsifier.
- Karanja Cake: Rich in organic nitrogen, phosphorus, and potassium, serving as a slow-release soil nutrient source.
- Nitrification Inhibitor: Blending crushed Karanja cake with chemical urea slows microbial conversion of ammonium to nitrate, reducing leaching and volatilization.
Cultivation, seed collection, and economics
Commercial farming of Karanja supports rural livelihood diversification and biofuel initiatives.
- Propagated through seeds or stem cuttings; mature trees produce pods annually from December to May.
- Harvest pods when they turn golden-brown; decorticate to extract seeds containing 25% to 35% oil.
- Supported under agroforestry promotion schemes and National Biofuel Policy missions.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
ICAR - Indian Institute of Oilseeds Research (IIOR) ↗Related on KisanPe
Common questions
What is Pongam known as in Hindi?
Pongam is known as Karanj or Karanja in Hindi and most regional Indian languages.
How is Karanja cake used with chemical urea?
Mixing 10% to 20% Karanja cake with urea acts as a natural nitrification inhibitor, reducing nitrogen loss and improving crop uptake.
Is Karanja oil safe for organic pest management?
Yes, cold-pressed Karanja oil is an approved botanical pest repellent under organic farming standards, effective against sucking and chewing insects.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
More Seeds, Crops & Cultivation guides
Ask Sakhi AI in your language, check live mandi prices or plan a loan with KisanPe tools.