Yields, Stand Persistence, and Carbohydrate Reserves of Perennial Grasses as Influenced by Spring Harvest Stage, Stubble Height, and Nitrogen Fertilization1
- J. T. Raese and
- A. M. Decker2
Spring harvests of orchardgrass, bromegrass, and reed canarygrass were made at pre-joint, early head, early bloom, and late bloom. At least one aftermath was differentially cut leaving either a 1.5- or a 3.5-inch stubble. Nitrogen was applied at either 25 or 75 pounds N per acre per harvest.
Yields increased with maturity at harvest. Greatest persistence with least weed encroachment was obtained at late bloom. The effects of stubble height varied with species, harvest date, and nitrogen rate. Yields were increased with high nitrogen even though stand was reduced. Although a negative relation existed between fructose and aftermath forage production, total fructose was positively correlated with etiolated tiller growth.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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