Question

Which planting techniques generally used for teak plantation ?

• A. Stem cutting
• B. Root cutting
• C. Seed
• D. Stump planting

Hint:

Teak Stump Dimensions to Remember:
- Shoot length = $2.5\text{ cm}$
- Root length = $15--20\text{ cm}$
- Collar diameter = $1--2\text{ cm}$
- Success rate $>$ 90%!

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
The question asks for the standard commercial propagation/planting technique utilized for establishing teak (Tecto grandis) plantations.

Step 2: Technical Specifications of Teak Stump Planting:

• Definition of Stump: A prepared planting unit consisting of a short piece of taproot and stem excised from a $1--2$ year old nursery-grown seedling.

• Dimensions of Standard Teak Stump:
• Stem length above collar: $2.5\text{ cm}$.
• Root length below collar: $15--20\text{ cm}$.
• Root collar thickness: $1.0--2.0\text{ cm}$ (pencil-thick).

Step 3: Detailed Explation:

• Direct seed sowing in teak suffers from delayed, uneven germition caused by hard seed coat dormancy.
• Stump planting ensures $90--95\%$ field survival, rapid root establishment, easy transport, and reduced planting cost.
• Stumps are planted using crowbar holes during the early monsoon period.
• Thus, stump planting is universally recognized as the best artificial regeneration technique for teak.

Step 4: Fil Answer:
Stump planting is the primary technique used for teak plantation. Therefore, option (D) is correct.