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Sanai (Senna)

Sanai (Senna)

Senna (Sanai) (Cassia angustifolia) is a small perennial shrub that typically grows to less than one meter in height, with ascending branches and compound pinnate leaves. Each leaf is approximately 10 cm long and features 5-8 pairs of leaflets on small stalks. There are two primary types of Senna: the rainy season variety, which requires more water, and the non-rainy season variety, which is more drought-tolerant.

Uses

Senna (Sanai) is an FDA-approved over-the-counter laxative used for:

  • Constipation: Effectively relieves constipation.
  • Bowel Preparation: Clears the bowel before diagnostic procedures like colonoscopy.

  • Irritable Bowel Syndrome (IBS): Provides relief from IBS symptoms.
  • Hemorrhoids: Helps alleviate symptoms associated with hemorrhoids.
  • Weight Loss: Aids in weight management through its laxative effects.

Cultivation

Senna is adaptable to various soil types but thrives best in red loams and alluvial loams. It prefers sandy loam to loam textures and is less suited for heavy black cotton soils. Ideal soil pH ranges from 7 to 8.5. Senna is highly sensitive to waterlogging and must be cultivated in well-drained soils. This warmth-loving crop requires ample sunshine for optimal growth.

Watering: Senna generally thrives under rainfed conditions. However, during prolonged droughts, light irrigation (5-8 times) can significantly enhance yield. Excessive irrigation should be avoided, as it can damage the crop.

Marketing

The market for medicinal plants like Senna can be volatile, with varying economics. Despite this, there is a strong demand for traditional Senna plants. Landson offers a Buy Back agreement to support cultivation and ensure market access.

Harvesting

Senna plants are harvested for their foliage, which contains high levels of sennosides. Harvesting is typically done in three stages:

  • First Picking (5-90 days): Early picking helps remove most of the growing tops, encouraging the plant to branch out and produce more foliage.
  • Second Picking (90-100 days): A follow-up harvest to collect additional leaves.
  • Third Picking (130-150 days): The final harvest, where the entire plant, including both leaves and pods, is collected.