Pasture Brix
Posted in Cows, Dairy, Farming, Grazing, Soil on July 28th, 2010 by Nathan – Be the first to commentWe’ve got a new tool on the farm–a refractometer! We aren’t checking grapes for wine harvest-ripeness, but rather the grass for “Total Dissolved Solids” or TDS (for short).
The refractometer gives readings in degrees Brix (°Bx), which corresponds to the % of sugar in the tested liquid (there’s more in there than just sugars, hence the “total dissolved solids” tag). The higher the number, the sweeter the juice. Our new instrument was purchased from a friend for $65. I did a quick test with filtered water and it showed an appropriate 0°, so Abigail and I spent some time Sunday afternoon out testing everything we could think of.
Dr. Dettloff demonstrated this for us during his seminar day, and Kathy and I were running all over the farm collecting samples of grass for testing. He carried a vise-grip specially modified with a stainless steel “beak” that collects and directs the drops of expelled sap to its tip for collection. He explained how a farm needs to get his pasture up to above 10° Brix, in order to keep his animals healthy and strong. read more »









