In this, you'll get almost information about a what is seed storage, what is seed packaging, types of storage and packaging, etc..

2. ASSIGNMENT ON
SEED STORAGE AND PACKAGING
SST 502: PRINCIPLES OF SEED PRODUCTION
Prepared by: Jay Khaniya
Degree: M.Sc. (Agri.)
Major Subject: GPB
Reg. No.: 2010117052
Submitted to:
Prof. Jyotiben R. Sondarva
(Assistant Professor at
Department of Seed Science and
Technology, JAU, Junagadh)

3. INDEX
Introduction
Seed factors which affect it’s storage life
Effect of storage environment on seed longevity
Methods of seed drying
Basic Features of seed storage
Seed storage structures
Packaging and packaging materials

4. INTRODUCTION
■ The principal purpose of storing seeds of economic
plants is to preserve planting stocks from one season
until the next.
■ With increased knowledge and technology of plant
breeding and genetics, the necessity for long time storage
of small quantities of the various cultivars becomes
apparent.
■ Beginning with harvest, seed lots usually pass through a
series of processes necessary for immediate or future use.

5. SEED FACTORS THAT AFFECT STORAGE LIFE
Genetics Effects
• Variation Among Species
• Variation Among cultivars
• Generalizations
Pre-harvest Effects
• How Seeds Are Affected
• Effect of Provenance
• Effect ofWeather

6. Seed Structure and Composition
Hard Seed
Seed Maturity
• Relationship of Maturity to Storability
• Grass Seeds
• Other Field Crop Seeds
• Vegetable Seeds
Seed Size

7. Seed Dormancy
• Relationship of Dormancy to Storage
• Dissipation of Dormancy
• Dormancy and Lifespan
Moisture Content
Mechanical Damage
• Awareness of Seed Damage
• Vulnerability of Some Seeds to Damage
• Response of Seeds to StorageConditions
• Possible Involvement of Genetics
Vigour.

8. 1) Temperature
1) Temperatures Above Freezing
2) Temperature Below Freezing
2) Seed Moisture Content and Relative Humidity
1) Direct Effect of Moisture on Seed Deterioration
2) Relation Between Relative Humidity and Seed Moisture Content
3) Rate of Moisture Absorption and Movement
4) Effect of Extreme Desiccation onViability andVigour

9. 3) Inter-relationship ofTemperature, Seed Moisture
Content and Storage Life
4) Vacuum and Gas Storage
5) Illumination
6) Respiration and Heating
1) Depletion of Food Reserves
2) Respiration ProductsThat RetardsThis Process
3) Release of Heat in Respiration
4) Measurement of Respiration
5) Some Factors Affecting Respiration
6) Preservatives for Reducing Respiration

10. ■ Natural Drying
■ Sun Drying
■ Artificial Drying
– Layer Dryers
– Batch Dryers
– Continuous Flows Dryers
Methods of Seed Drying

11. ■Protection FromWater
■Protection From Contamination
■Protection From Rodents
■Protection From Insects
■Protection From Fungi
■Protection From Fire

12. Usually for few days or weeks.
Maybe stored in bins, bags, or in some cases of ground.
Accumulate seeds during and immediately after harvest
Maybe in wood, metal bins, concrete silos, bricks, etc.

13.  Seed Processor Storage
• Vary widely in size and construction ranging from
small wood or metal building to large multi-storeyed
wood, bricks, or concrete warehouses.
 Retail Storage
• Seed retailer hold their stock for varying length
of time.
• At retailer level little or no attempt is made to
provide protective storage.
 Research Storage
• Scientists must store varying quantities of specific seed
stock in order to have viable seeds available for their
research.

14.  Germplasm Storage
• This is three-level building.
• The machine room, control room, biochemistry laboratory,
growth chamber, custodian’s supply room, workshop, garage,
and a supply storage are on first level.
• The second level houses the administrative offices.
• The seed storage rooms and germination laboratory occupy the
third level.

15. Packaging and Packaging Materials
 The equipment for filling packages ranges from a simple
spoon or seed scoop, to the manually controlled gravity flow
from a bin, to the high-speed automatically controlled small
packet filler.
 Package-filling equipment has no effect on the genetic or
physiological quality of seeds; however, it may affect the
physical quality of seeds through impact or under pressure.
 Physical damage can occur during any handling operation
from harvest to planting.

16. Packaging Materials
 Porous packaging materials
 Burlaps or hessian bags, bleached sulfite or bleached craft
paper, cardboard box and canes, fabric bags, etc.
 Moisture proof Materials
 Metal containers, Glass containers, etc.
 Moisture resistant materials
 Polyethylene Films, Polyester Films, Polyvinyl Films,
Cellophane, Plio film, Aluminium Foil, etc..