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- Title
Supercow: A Liquid Manure Applicator for Small‐Plot Research.
- Authors
Bary, Andy I.; Sullivan, Dan M.; Fransen, Steven C.; Cogger, Craig G.
- Abstract
Small‐plot research in manure nutrient management requires accurate manure applicators that are easy to operate and maneuver. Our objective was to design a small‐plot liquid manure applicator that could apply variable rates of dairy manure containing up to 60 g kg−1 solids to perennial grass plots while avoiding traffic and compaction on the plots. The applicator consists of a 1000‐L fiberglass agitation tank mounted on four load cells, a delivery pump and motor, and a side‐mounted boom with four nozzles for manure application, all built onto a wagon and towed by a tractor. The side‐mounted boom allows manure application without traffic on the plots. Manure application typically was within 7% of the target rate and had a coefficient of variation ranging from 2 to 17%, measured over a series of rates from 53 to 211 Mg ha−1 (wet weight). The precision, accuracy, and ease of operation of the applicator met our research requirements. Efficiency of operation could be improved using a larger agitation tank.
- Publication
Agronomy Journal, 2001, Vol 93, Issue 6, p1344
- ISSN
0002-1962
- Publication type
Article
- DOI
10.2134/agronj2001.1344