Grouse, the Agri-Fab is a pull behind spreader that spreads only by spinning the wheels, correct? I assumed a motorized spreader would provide a more consistent spread. How do you control your spread with the AgriFab?
Yes, it’s a ground-driven spreader, the wheels drive the broadcast plate.
What I found out the hard way is the consistency of the spread is almost all down to the precision of the mechanisim that controls the opening and closing of the gate.
What I found on 2 of the spreaders I bought is that there was so much slop and play in the gate opening that even using the same setting, the opening would vary by up to 1/8 of an inch just because of the flex/slop in the mechanism.
Speed isn’t as critical as I thought, just be as consistent as you can. If you go faster, so does the auger and the plate, so you spread faster to compensate for covering more ground. If you go slower, everything slows down so you spread about the same volume per acre. The spread swath is regulated by the height of the plate to the ground, so going really fast does not make it spread a wider swath.
The electric spreader IMO was more prone to variance because it does not speed up or slow down to compensate for variations in ATV speed. It’s throwing the same amount of product regardless of speed, so if you go faster, you get less per acre, etc. Also, the electric spreader I had was by far the worst in terms of gate size opening variation.
The biggest thing is to first measure your plot size precisely with a GPS tool.
Then section off a 1/4 of an acre areas and use these to calibrate the material you’re spreading. Say you’re trying to put 100 pounds per acre of fertilizer down. OK, so that’s 25 pounds per 1/4 acre, measure out half a bag and use the seeder’s guide to pick the setting let’s say it’s a 5.
My “spreading speed on my polaris is 2700 RPM in low gear, so I try to maintain that speed.
So you cover that 1/4 acre and then check the bin. Product left over? Cange setting to a 6. Not enough product, change down to a 4. Use the next quarter acre to verify.
Then write the settings down with a sharpie on a piece of tape on the spreader! Product / Rate / Speed. This info is like gold and once you figure it all out, it allows efficient one pass spreading.
BTW as DT says above, the shoulder bag seeder is the only way to go when it comes to spreading seed. I still use mine for all seeding with the exception of grain.
Grouse