In this video I briefly go over what a refractometer is and how to use it to measure plant sap as a blunt tool for determining the health of your plants. I also briefly discuss plant sap analysis as a precise tool for determinng plant health as well as identifying specific imbalances in plant nutrition so they can be addressed quickly using Foliar Feeds. This leads to better plant health, yield, quality, and disease and pest resistance. For more EXCELLENT information on this topic check out this webinar from AEA on The Role of Micro Nutrients in Crop Health and Disease Resistance: [ Ссылка ]
Here's a video on using Plant Sap Analysis: [ Ссылка ]
