The new Ramped Calibration Strip Applicator applies increasing levels of N in a strip across a fixed distance (160 to 320) feet. The levels applied range from 0 at the start of the strip to the maximum that could ever be expected to be used. This fertilizer is applied pre-plant or in a very early crop growth stage. An N-rate recommendation can be determined by visual inspection or with a hand-held sensor by walking the strip from the low rate toward the high rate and stopping at the point where there are no further changes in crop growth or NDVI. The N-rate applied at that spot (where no further changes in NDVI were noted) is the N-rate recommendation.
6504 South 600 Road
Miami, OK 74354
R.Rt 1, Box 82
Helena, OK 73741
Randy Taylor
Department of Biosystems and Agricultural Engineering
Oklahoma State University
Stillwater, OK 74078
405 744 5277
randy.taylor@okstate.edu
Western Equipment
4501 E. Main, P.O. Box 391
Weatherford, OK 73096
580 772-5578
580-331-7107
N Rich Strip Adopters
Steinert’s near Hennessey
Brent Rendel (see link below where he has developed
several rampers)
Jimmy Wayne Kinder, near Walters
Panhandle via extension presentations Brian gave in
Boise City and Woodward
Jason Lawles via Western Equipment (several hundred)
Levi and Curtis Johnson Brothers (developed the J2 ramper, , see below,
Helena, OK)
Joe Biggerstaff, Engineering Student of Solie’s (every field they owned and
rented)
Curtis Fischer (Kingfisher)
Kim Metcalf (now with Estes Chemical)
Gerald Wynes (Ponca City), many
Jagadeesh Mosali (N rich strips in Bermuda, many locations)
Roger Gribble (many)
Ivan Peck (many on his own for the last 5 years)
Monsanto (many via Kyle Freeman, Kyle Lawles, and Paul Hodgen)
Delaware County, Bermudagrass, 2007 (RAMP peaked at 200 lb N/ac, with a range from 0 to 350 lb N/ac.
Some
of our earlier approaches are included on this page, in addition to
equipment configurations delineated by our Agricultural Engineering Team