Germination Process Flashcards
What are the two parameters that can be adjusted to control germination?
- The bed temperature
- Moisture in the bed
What is the optimal grain bed temperature range for germination?
16-21˚C
What is the air-on temperature range used to control the grain bed temperature?
11-16˚C
How is moisture in the bed controlled during germination?
By controlling relative air humidity in the vessel and spraying the bed
What is the significance of the air-on temperature in the germination process?
It cools the bed while maintaining a temperature of 16-21˚C
What is the maximum percentage of recirculated air that can be used to control air-on temperature?
80%
What is the consequence of using more than 80% recirculated air?
High levels of CO2 can reduce the rate of germination
What is monitored above the bed to control the germination process?
Air-off temperature
What happens to the bed’s temperature due to respiration?
It increases
How much moisture can grain lose per day?
Roughly 0.5%
During which period is the respiration rate most active?
During the first three days
What is the vital moisture content range to maintain during the highest rate of respiration?
43-46%
How is bed moisture maintained during germination?
Using water spray nozzles on the turner arm
What is the role of the helical screws in the germination process?
They turn the grain while water is sprayed on to the kernels
True or False: The temperature has no effect on the enzymes involved in germination.
False
Fill in the blank: The effect of _______ on modification is a key consideration in germination.
[moisture]
Fill in the blank: The effect of _______ on modification is an important factor in the germination process.
[temperature]
What should you consider regarding the effect of temperature on the rate of modification?
The effect of temperature on enzymes and the rate of modification
