Influence of test Period and Sequence of Years on Results with Perennial Forage Crops in a Semiarid Region

Kilcher, M.R.

Canadian Journal of Plant Science 60(4): 1191-1201

1980


ISSN/ISBN: 0008-4220
DOI: 10.4141/cjps80-172
Accession: 068494132

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Abstract
A perennial forage test comprising six different grasses, each in mixture with one alfalfa cultivar, was seeded adjacently in 1966, 1968 and 1970. Each test was identical in design and used the same seed lot. The three tests were each run for 9 consecutive yr, ending in 1975, 1977 and 1979, respectively. Measurements included annual and seasonal precipitation, progressive stand and component changes and dry matter (DM) yields from two to three cuts per year. Statistical analyses of the collected data were done for each test for varying periods of years during the respective 9-yr periods. Main conclusions were that particular blocks of years tended to give similar and comparable results provided that the number of sequential years exceeded five, and also, provided first-year data were excluded.