Sunday, July 29, 2012

Spraying the greens

We have approximately 1 acre of bentgrass putting greens.  For chemical applications, read the label for the product/acre.  Mix this rate into 75 gallons of water.  If adding water with the fire hose, I will fill the tank with water up to the two pieces of tape.  One in the front of the tank and a second in the rear of the tank.

I will need to add fertilizer and any dry products to the tank first to allow for dissolving into solution.  Add any other liquid fertilizers, and then the remaining chemicals.

Fertilizer is applied every other week with Urea or Ammonium nitrate + Potassium nitrate.  For urea to be applied at 0.2 lb/1,000 ft^2, you have to add 17 lbs of product.  AN (10 lbs fert) and PN (30 lb fert) are applied together at a rate of 0.1 lb/1,000 ft^2.

(Rate that you want to apply / % Nitrogen)*43.56 = lb of fertilizer/Acre. 
Better for me to miss on the low side than high side when adding fertilizer

Primo is applied monthly at a rate of 6 oz/A.  At this rate, I would not be able to spray the bermudagrass portion of the big green.  If Primo is applied at 3 oz/A, I can spray the bermudagrass.

Wetting agent is applied monthly opposite primo application.  Wetting agents require watering in following application, whereas Primo does not need to be watered in following application.  I will have to be careful and completely understand where I can apply these wetting agents.

Running the Sprayer

Once the water is in the sprayer, you want to turn up the RPM's to approximately 25 using the lever on the far left.  Once agitating, I will add the fertilizer and other products to the tank.  Allow all products to agitate for a short period of time to ensure complete mixture.

Drive to Southwest corner of big green (My SR1020 plots). The length of the boom is approximately 7 steps from one end to the other.  First flag is placed at the back foot following 4 steps.  Subsequent flags are placed 7 steps from flag to flag.  Same process occurs on opposite side of green.  For the NTEP Green, first pass is centered on the fringe and green on the Northeast side.  First flag would go 7 paces from the Northeast Corner, and subsequent flags 7 paces past previous flag.  If we are not spraying John's StressGuard study, first flag would be at the back foot on the 4th pace.  7 steps for other flags.

When preparing to spray the green, I need to drive the sprayer in 3rd gear LOW.  If the sprayer doesn't want to go into low gear, put sprayer in reverse, release some on clutch, while pressing lever to low.  The sprayer should click into low at that point.  Shift back to 3rd gear and begin spraying.  Drive from flag to flag keeping the flags in the center of the sprayer.  I will need to keep the RPM's of the sprayer between 30 and 35.

Pressure for the sprayer should be 32 psi.  Check the pressure when lining up for first pass.  In the event that pressure needs to be adjusted, use the toggle switch on the spray control panel to click up or down depending on direction desired.  Pressure may begin to drop when tank begins to get low.  Keep an eye on the pressure when we are nearing empty on the tank.

This should be all the information I will need to be capable of spraying the putting greens every other week.