"Phosphorus is so basic to the whole problem of crop production that probably no other subject in the field of soil fertility has received more attention than the phosphorus problem in its various soil-plant and soil-animal relationships and it probably will continue to challenge the best efforts of investigators for many years”. (27). "Phosphorus is the only element which must be purchased and returned to the most common soils of the United States, it is the key to permanent agriculture on these soils". (20).
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.122703 |
| Date | January 1950 |
| Creators | Doyle, James John |
| Contributors | DeLong, W. (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 Agronomy.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 000659465, Theses scanned by McGill Library. |
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