Showed Chip how to use the sprayer on Saturday. We added approximately 4# of Pencozeb and 1 gal. of sulfer to the 30 gal. spray tank and filled it up. These are the rates for 1 acre but since the shoots are so small we hope we are getting enough coverage by spraying from just one side which allows us to spray one tank for the whole 2.5 acres. Because of the drift Chip decided to wait until Sunday to spray. By Sunday morning the chemicals had congealed in the filter and the sprayer was clogged. Chip valved off the filter, removed and cleaned it. While the sprayer was sitting, additional gel like chemical oozed out slowly until the chemical finally began to run. Lesson, don't let sulfer and pencozeb sit in the tank overnight. Only mix it when you are ready to spray and then only mix what you will use in that spray.
Chip had about 7 gal. of product left when he finished the last row and we added Deer Stopper and a little more water to the tank. Deer Stopper is a 9:1 concentrate. Chip then sprayed this over a portion of the vineyard.
Chip please document where you sprayed this so we can keep an eye on its effectiveness.
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In adding the "Deer Stopper" to the remaining mix, I added enough water to the mix tank to make 10 gallons of spray mixture. To apply this remaining mixture, I increased the application speed by running the tractor in 4th gear at approximately 1500 RPMs. This allowed me to cover every row (one side of vine only) however, I chose to apply on the downwind side of the vine. This allowed two things to happen. Since my earlier spraying of the sulphur and PencoZeb was done on the upwind side of the vines, this seconde application with Deer Stopper and remaining suphur and PencoZeb caused any overspray to be blown back to the opposite side of the vine providing at least a minimal coverage to both sides of the vine. A brief inspection of the leaves showed that there was at least some coverage on the opposite side of all vines.
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