🙏 Ocimum (Tulsi)
Cultivation, species importance, and essential oil uses of Ocimum or tulsi crops.
Ocimum, commonly known as Tulsi or basil depending on species, is a medicinal and aromatic herb valued for essential oil production as well as long-standing therapeutic use in traditional systems.
Crop Profile and Uses
Ocimum sanctum (Holy basil) is widely cultivated and culturally important. Leaves and aerial parts yield volatile oil rich in eugenol and related compounds.
Major uses:
- Herbal medicine and household remedies.
- Essential oil for perfumery and pharma uses.
- Culinary and protective plant roles.
Climate and Soil
Ocimum grows in tropical and subtropical climates with good sunlight and moderate humidity.
Soil suitability:
- Well-drained loam to lateritic soils.
- Broad pH tolerance, but waterlogging should be avoided.
Propagation and Planting
Propagation is by seed through nursery raising.
Practice points:
- Fine seedbeds with FYM.
- Transplant at 4 to 5 leaf stage.
- Spacing varies by agroclimate (commonly near 40 x 40 cm range).
Nutrient, Irrigation, and Interculture
- Basal and split nitrogen with phosphorus are recommended.
- Irrigation frequency is higher in summer.
- Early weeding is critical; crop later suppresses weeds.
- One hoeing/earthing up improves stand.
Protection, Harvest, and Oil Recovery
Major issues include powdery mildew, seedling blight, root rot, and leaf rollers under susceptible conditions.
Harvesting:
- First cut around 90 to 95 days.
- Further cuts at interval based on regrowth.
- Steam distillation preferred for quality oil.
Summary Cheat Sheet
| Topic | Key exam point |
|---|---|
| Correct genus | Ocimum |
| Common crop name | Tulsi / basil group |
| Important species | O. sanctum, O. basilicum, and O. gratissimum |
| Crop type | Medicinal and aromatic herb grown for herbage and essential oil |
| Major oil constituent | Eugenol in many tulsi types |
| Propagation | Usually through seed nursery raising and transplanting |
| Management focus | Climate-soil suitability and interculture affect herbage and oil yield |
| Harvest and processing | Oil recovery depends on harvest stage and distillation method |
| Taxonomy trap | Do not write “Ocium”; the correct genus is Ocimum |
| Species trap | Different Ocimum species have different oil profile and use, so they should not be treated as identical |
References
2 sources • [1] [2]
References
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