Seed processing
- 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