I love my two Toro sprayers with Geolink but to be honest, I would have never gotten them for the reasons that sales people were pushing. They said it would save money in applied product. These machines are expensive and I wasn't seeing any return on a 10-15% savings due to less overlap and waste because the fertilizer I spray is so inexpensive and we hardly spray any fungicide or other expensive chemicals. There is definitely less overlap and waste. Zero overlap actually. With traditional sprayers I was taught to mix 15% extra for overlap and overspray. With a GPS sprayer, you actually spray slightly less than the designated area. It only overlaps if something goes wrong. They also said it would save time because there was less overlap. For me it doesn't save time because autosteer only works below 10 km/h and I used to like to let'er rip and spray at 12 km/h. We have 18ha of fairways (44 acres) and very limited weather windows so you have to go fast to stay ahead of golf ...
I recently discussed how we can use fertilizer ratios to simplify how much fertilizer we apply to help us keep above the MLSN guidelines . When we get a soil test done it is a static amount of nutrients found in the soil. Even if you are above the MLSN guidelines at the time of testing, it doesn't guarantee that you will remain at or above the guidelines as the grass grows and consumes nutrients. There is math that you can use to determine exactly how much nutrient you need to apply to ensure that you remain at or above the MLSN guidelines. For many, this is much too complicated. For that reason I made a quick cheat sheet to help you determine how much of each nutrient you can expect to use each year based off a few different annual nitrogen rates. Nutrient use is based primarily on nitrogen use so the left 2 columns are a few different nitrogen rates. The columns for each nutrient are in PPM and are designed to help you look at your current soil test PPM (mehlich 3) and determin...