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Paraquat-Cured Herbage for Late Season Grazing¹

Squaw Butte Experiment Station, Burns, Oregon 97720

Abstract

AVERAGE daily gain by yearlings grazing paraquat-cured crested wheatgrass in the fall of 3 years was increased 0.27 kg above that of yearlings grazing naturally cured crested wheatgrass. Calculated total water consumed and daily forage intake was greater on paraquat-cured pastures. Paraquat-cured forage in 5 weeks following treatment retained significantly (P<0.05) higher levels of P, K, C.P., lignin and ash. Herbage yield, Ca and ether extract were significantly (P<0.05) higher in naturally cured crested wheatgrass while cellulose decreased in time under both curing treatments.

¹ Contribution from the Squaw Butte Experiment Station, Burns, Oregon 97720. This Station is jointly operated by Oregon Agricultural Experiment Station, Oregon State University and Plant Science Research Division, Agricultural Research Service, U.S.D.A.

² Range Scientist, Plant Science Research Division, Agricultural Research Division, U.S.D.A., Burns, Oregon; Animal Nutritionist, Oregon Agricultural Experiment Station, Burns, Oregon; Assistant in Animal Science, now Department of Animal Science, University of Missouri, Columbia. Technical Paper No. 3232 Oregon Agricultural Experiment Station.