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Chronological Versus Physiological Basis for Harvesting Grass Variety Tests 1
Author(s) -
Austenson H. M.
Publication year - 1964
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1964.0011183x000400040031x
Subject(s) - variety (cybernetics) , citation , agricultural experiment station , library science , crop , biology , computer science , agriculture , agronomy , artificial intelligence , ecology
H. M. Austenson IN FORAGE variety tests, yield is generally of overriding importance. Not only can yield be determined easily and with precision, but it is also an evaluation of physiological efficiency, resistances, and all of the genetic factors that influence growth. This is not to say that quality of herbage is of minor importance. Varietal differences in animal intake and digestibility have been reported (7), and in some cases these, rather than yield, may determine the true worth of a variety. For the present, accurate procedures for measuring forage quality are neither routine nor cheap. Although yield can be measured accurately, conclusions can be reversed under different management practices. One factor that enters into the evaluation is the harvesting