In our daily life seed is a essential factor we use it for produce new plant and from the plant we take different types of grains.Seed is the vital element for germination new plant .

1. Welcome
1

2. Name: Fazle Rabbi
ID: 18309035
Program: BSAg.
Under The department of Collage of Agricultural Sciences
IUBAT-International University Of Business Agriculture and Technology
2

3. Topic Name: Seed Processing
Course code: AGR-301
3

4. Seed Processing
Seed processing means improving the quality of harvested
seed, including several operations starting from harvesting of
seed crop till its marketing
4

5. Objectives of Seed Processing
 To improve seed quality through removal of
Dieses affected seed, non-seed material, broken seeds
 To maintain seed viability and vigour
 To Make seed handling easy
 To increase real value of seed
Real value = Purity (%) × Germination (%)
100
5

6. Methods used for Seed Processing
 Seed Drying
 Seed Cleaning
 Seed Grading
 Seed Packaging
 Seed Labeling
6

7. 1. Seed Drying
Reduction in seed moisture content to a safer limit is called seed
drying
 Its objective is to maintain seed viability and seed vigour for
longer period of time during storage
 If moisture contents are high, then higher chances of insect pests
attack
7

8. Types of Seed Drying
 1. Natural Drying
• Seeds are spread uniformly at neat and clean place and dry under natural
conditions
i.e under sun
 2. Artificial Drying
Different artificial driers are used to dry seeds
• Bag Driers
• Box Driers
• Bin Driers
• Continuous Flow Tower
8

9. 2. Seed Cleaning
Separation of physical impurities or removal of non
seed material from seed
• Wet Cleaning
• Dry Cleaning
9

10. 3. Seed Grading
Removal of under sized / under weight seeds from
seed lot
Grading is done on the basis of
 Length
 Width
 Thickness
 Density of seed
10

11. 4. Seed Packaging
 Seeds are packed in bags of appropriate quality and
size.
 Choice of packing material depends upon type of crop,
amount of seed and storage conditions
Packaging materials are three types:
 Moisture-vapour resistance, e.g polythene
 Moisture-vapour permeable, e.g cloth,paper bags
 Moisture-vapour proof, e.g Tin cans
11

12. 5. Seeds Labelling
All seed bags must carry printed information about
 Crop
 Variety
 Class of seed
 Name & address of producer
 Physical purity (%)
 Genetic purity (%)
 Moisture (%)
 Germination (%)
 Date of germination
 Date of test
 Net Content
12

13. Some seed producing Organization 13

14. Thank You
14