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Yields, Stand Persistence, and Carbohydrate Reserves of Perennial Grasses as Influenced by Spring Harvest Stage, Stubble Height, and Nitrogen Fertilization 1
Author(s) -
Raese J. T.,
Decker A. M.
Publication year - 1966
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1966.00021962005800030023x
Subject(s) - perennial plant , agronomy , bloom , forage , tiller (botany) , biology , persistence (discontinuity) , nitrogen , weed , zoology , chemistry , ecology , geotechnical engineering , organic chemistry , engineering
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.