Báo cáo nghiên cứu nông nghiệp " TestingPost Harvest Care " pdf

Concepts to define – 2
1. Drying
2. Extraction
3. Transport
4. Cleaning
5. Documentation
6. Storage
7. Testing
Post Harvest Care
Drying – orthodox seed only
E. dunnii
Drying – orthodox seed only
E. urophylla single tree collections
Sieving eucalyptus seed
Bulk Eucalyptus processing
Drying – A. mangium
Thresher
Seed separator (air blower)
Keep
It
Simple !
Extracting seeds
Cleaning Seeds
Removing coarse debris using table sieves
Cleaning Seeds
Fine sieving
Cleaning Seeds
Winnowing seed
Cleaning Seeds
Seed after seed extraction and final cleaning
Grading Seeds

(by size)
Grading Seeds
(by size)
¾Common practice in pines
¾Size can affect nursery
propagation
¾Seed size will not always
influence growth performance of
trees, especially with eucalyptus.
Transport of fruits/seeds
¾Protect from moisture
¾Protect from heat
¾Protect from insects/animals
¾DOCUMENTATION / Labeling
Testing
¾Viability
¾Speed of germination
¾Changes through time
¾Moisture content
Seed Storage
¾Protect from moisture
(airtight containers/bags)
¾Protect from heat
¾Protect from insects/animals
¾DOCUMENTATION / Labeling
Seed store
• 1,300 species
• 30,000 accessions
• Species, provenances and families
represented

• All seedlots documented and
catalogued
Distribution
Distribution
¾ Packaging
¾ Documentation
¾ Transport
¾ Distribution records
ATSC - seed distribution
• 10-12,000 dispatches each year
• 2,500 enquiries
• 100 countries
• ~60% overseas dispatches
Communication & Information
• Inform users/growers of seeds available
• Talk to users about nursery
results/problems
• Survey/gauge demands
Notes for end users of seed:
• Establishment costs are the same for poor
quality seed as for the best material
• Seed is typically less than 5% of the total
establishment cost (for seedling establishment)
• Profitability and success of plantings is highly
dependent on the quality of the seed used