Life Sciences Commons^™

A Simple Test To Evaluate The Calibration Stability And Accuracy Of Infrared Thermocouple Sensors, Derek R. Pinnock, Bruce Bugbee

Techniques and Instruments

Accurately measuring surface temperature is not difficult when the surface, the sensor, and air temperatures are similar, but it is challenging when the surface temperature is significantly different than air and sensor temperatures.

We tested three Infrared Thermocouple sensors (IRT’s) that had been used for two years in a greenhouse environment. The importance of the correction for sensor body temperature was also examined.

Non-Destructive Determination Of Leaf Expansion Using A Digital Camera, D. R. Pinnock, S. P. Klassen, Bruce Bugbee

Techniques and Instruments

Leaf expansion is reduced in mild water stress. Early detection of water stress can be accomplished with digital images taken at daily or hourly intervals.

Conclusions

• Digital cameras can be used to determine leaf expansion and relative growth rate.
• Digital cameras can also be used to detect early symptoms of water stress.

Determining The Environmental Factors Controlling Respiration: Interpreting The Temperature Response, Jonathan Frantz, Marc Van Iersel, Bruce Bugbee

Techniques and Instruments

• Concept of Q₁₀is too simplified.
• Specific temperature sensitivities are often ascribed to species rather than method.
• Too much emphasis is placed on temperature in determining respiration rates.