A number of sources of variation which may influence the evaluation of comparative yield trials of silage corn were investigated in 1951, namely, the effect of maturity, diurnal changes in percentage dry matter, and the variability of duplicate samples. In 1952 several proposed methods of evaluating comparative yield trials were compared with the "Standard Method" presently in use at Macdonald College. Inconsistent exceptions precluded the possibility of separating varieties into three distinct classes according to their green yield ranks, with the object of eliminating the class with the lowest yield. A "Whole Ear Method" in which unchopped ears were sampled was of comparable accuracy to the "Standard Method" of harvesting. "Methods of Combining Green Plant Materials" and the "Standard Method" produced comparable data; complications of field operation inherent in the former methods preclude their extended use. It may not be necessary to samp1e every replication for percentage dry matter estimations.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.109338 |
| Date | January 1953 |
| Creators | Goyette, Louis. E. |
| Contributors | Brawn, R. (Supervisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science. (Department of Agriculture.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
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