This document discusses mechanical crop drying and provides details about various types of batch and continuous crop dryers. It includes diagrams of recirculating batch dryers, sack dryers, column batch dryers, layer-in-bin dryers, batch-in-bin dryers, and continuous-in-bin dryers. Tables with recommended drying temperatures and depths for different crops are also presented. The document concludes with an overview of the drying process and mechanisms of crop dryers.

1. Sub.:- Principles of Seed Technology
Course No. :- APB- 5221
Credit hours:- 3(1+2)
Lecture Topic :- Mechanical crop drying.
Presented by:-
Indira Gandhi Krishi Vishwavidyalaya
Raipur, C.G.
Presented by:-
Lt. Roshan Parihar, Asstt. Professor (GPB)
Deptt. of Genetics & Plant Breeding
BTC College of Agriculture & Research Station
,Sarkanda, Bilaspur,(CG)-495001

3. Recirculating Batch dryer

4. Different Batch Dryers

5. Sack Dryer

6. Column batch dryer

8. Layer-in-bin dryer

9. Batch-in-bin dryer

10. Continuous-in-bin dryer

11. Fig.:-

12. Drying process

13. Continuous flow dryer
LSU Dryers
RPEC Dryers

15. A) Main and Lateral duct

16. B) Single central perforated ducts

17. C)Perforated false floor

18. Recommended temp. & Depth for
drying
Seed Maximum Depth
(inch)
Recommended
Drying temp.
Shelled corn 20” 110 °F
Wheat 20” 110 °F
Barely 20” 105 °F
Oats 36” 110 °F
Rice 18” 110 °F
Soybeans 20” 110 °F
Peanuts 60” 90 °F
Grain Sorghum 20” 110 °F

19. Mechanism of crop dryers
How grain dryers work (1).mp4

20. Thank youThank you