In the four videos below, Dr Dario Stefanelli, Agriculture Victoria, explains how to use the DA meter to determine the maturity of stonefruit and pomefruit.
- Operational overview
- Downloading data
- Trouble shooting
- Measuring pome and stonefruit:- detailed explanation
How to use the DA meter: Operational Overview
Dr Dario Stefanelli provides an overview of steps for using the DA meter for measuring fruit maturity in Pears and Stonefruit.
Downloading Data from the DA meter
Dr Dario Stefanelli provides steps to download data from the DA meter - for measuring fruit maturity in Pears and Stonefruit.
Dr Dario Stefanelli discusses trouble shooting for using the DA meter for measuring fruit maturity in Pears and Stonefruit.
DA Meter- detailed explanation of the steps to use the DA meter for measuring Stonefruit and Pome fruit maturity
Dr Dario Stefanelli provides technical explanation of steps for using the DA meter for measuring fruit maturity in Pears and Stonefruit.
What does the DA meter do?
The DA meter measures the flesh greenness by reflectance of two wavelengths (670 and 720 nm) of light, near the chlorophyll-a absorbance peak. The reflectance is expressed as an index of absorption difference (IAD) scaled from 0 to 3 (green). Comparison of IAD with fruit ethylene production for many cultivars has shown a strong inverse relationship supporting the DA meter as a tool to measure fruit maturity.