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New Coverboard Seals Nitrogen Behind Shanks
Michigan fertilizer dealer Eric Jorgensen has come up with a simple new way to seal anhydrous ammonia into the ground behind injector shanks.
"Coverboards" consist simply of a heavy steel cable and a curved metal plate with a gap at the bottom for soil and trash to pass through. It attaches to the rear of the applicator knife and depth is adjustable simply by changing the angle of the cable. If you want more penetration you just turn down the angle of the cable.
"They have tremendous penetration, even in hard ground, and they'll last 3 to 5 times as long as paddle or disc coulter type coverers commonly used to seal anhydrous," says Jorgensen. "It pulls dirt in from both sides of the slit and after it's passed it's hard to see where the slit was."
Coverboards can also be used behind cultivators used to inject nitrogen. "Farmers who run ridge-till cultivators love it. It's particularly good to sidedress nitrogen because the soil is often harder and more difficult to cover. It not only seals in the nitrogen but keeps it from escaping and burning leaves."
Life expectancy of units is 8,000 to 10,000 acres. They're made with solid core 5/8-in. dia. steel cable and heavy 10 ga. steel. They sell for $25 apiece. Jorgensen's looking for distributors.
For more information, contact: FARM SHOW Followup, Eric Jorgensen, Jorgensen Elevator, 2214 South Dietz Rd., Williamston, Mich. 48895 (ph 517 655-4296 or 517 665-1375).

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1986 - Volume #10, Issue #3