A measure of plant health. Early warning sign of pest or disease susceptibility. Sap pH of 6.4 is optimum. Variation from this indicates mineral deficiency, and in time, disease. Test can be combined with the Brix test.
For sap pH testing, you can decide whether you want to test the field more generally (under the W walk category), or repeatedly test a specific sample site over time (using the GPS feature to find the same sample location). Read more info here on how to do a W walk.
What to record
- Sap pH value
- Photos
Equipment
- Sap pH Meter (Horiba B-711 LAQUAtwin Compact pH Meter)
- Garlic press
- Distilled water
- Squeezy bottle (if poss)
How to do the test
