TOFG-all

(Marcin) #1
Propagation/Greenhouse Management

Unit 1.3 | Part 1 – 133
Instructor’s Demonstration 6 Outline


Demonstration 6: Seedling Development & the


“Hardening Off ” Process


for the instructor


OVERVIEW


This demonstration shows students


how to prepare seedlings for field


transplanting.


PREPARATION AND MATERIALS


  • Seedlings at varying stages of maturity


PREPARATION TIME
0.5 hour

DEMONSTRATION TIME
0.5 hour

DEMONSTRATION OUTLINE

A. The Hardening Off Process


  1. Define the hardening off process and its role in seedling
    maturation and survival

  2. Discuss characteristics of seedling maturity (see
    Appendix 10)

  3. Discuss regional importance and influence on duration
    of hardening off process. Greater temperature
    differences between greenhouse and field conditions will
    require a longer hardening off period.

  4. Discuss and demonstrate the various propagation
    structures and techniques used in the hardening-off
    progression
    a) Highly controlled environment of greenhouse settings
    b) Partially moderated conditions: Hoophouses
    c) Outdoor benches approximating field conditions

  5. Provide examples of seedlings prepared for transplanting

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