An experiment was set up at Alfred College, in Eastern Ontario, to investigate methods of correcting the negative effects of deep compaction of fine textured soils. / The site was divided into two fields of four treatments with three replicates of each. Treatment 1 was control, treatment 2 subsoiled, treatment 3 compacted and treatment 4 compacted then subsoiled. In year 1 barley was sown in both fields, underseeded with alfalfa in Field 1. The following year alfalfa was grown in Field 1 and corn using minimum tillage in field 2. / Measurements included cone penetration resistance, dry bulk density, and crop yields. / It was found that compaction had a significant effect on lowering yields. However, due to the experiment methodology in the measuring of cone penetration resistance and dry bulk density plus a blocking effect in the corn field, the results were inconclusive statistically as to whether the subsoiling in combination with minimum tillage and alfalfa had an effect of decompacting the soil profile.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.68162 |
| Date | January 1994 |
| Creators | Chambers, Robert |
| Contributors | McKyes, Edward (advisor) |
| 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 Agricultural Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001395977, proquestno: AAIMM94419, Theses scanned by UMI/ProQuest. |
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