- Library Home /
- Search Collections /
- Open Collections /
- Browse Collections /
- UBC Theses and Dissertations /
- Quality changes in forage crops following applications...
Open Collections
UBC Theses and Dissertations
UBC Theses and Dissertations
Quality changes in forage crops following applications of 2,4-D Vaartnou, Herman
Abstract
Very few investigations have been made which report directly on the effect of the plant growth regulator 2, 4-D on a great group of plants, principally grasses and legumes, the forages used by livestock. Under certain conditions such growth regulation substances may effect considerable changes in the chemical composition of higher, plants. The fact that forage value may be deliberately altered by applying sub-herbicidal concentrations of growth regulators seems not to have been carefully studied. An investigation appeared warranted and is the subject of this research. Under field conditions several sub-herbicidal levels of 2,4-D were applied at several stages in the development of red and white clover, perennial ryegrass, Kentucky bluegrass, and timothy growing on Ladner clay and Alderwood loam. Appreciable increases in dry matter and nitrogen yield obtained in certain treatments. Other significant effects were noted in flowering and seed production. Confirmation of the field results was obtained in greenhouse studies on red clover and Olli barley. A search for the source of the increased nitrogen did not reach a definable end but work with the influence of treated plants on soil Rhizobia and Azotobacter suggest that 2,4-D applied to forages may in some instances modify the ecology of the soil flora.
Item Metadata
Title |
Quality changes in forage crops following applications of 2,4-D
|
Creator | |
Publisher |
University of British Columbia
|
Date Issued |
1953
|
Description |
Very few investigations have been made which report directly on the effect of the plant growth regulator 2, 4-D on a great group of plants, principally grasses and legumes, the forages used by livestock. Under certain conditions such growth regulation substances may effect considerable changes in the chemical composition of higher, plants. The fact that forage value may be deliberately altered by applying sub-herbicidal concentrations of growth regulators seems not to have been carefully studied. An investigation appeared warranted and is the subject of this research.
Under field conditions several sub-herbicidal levels of 2,4-D were applied at several stages in the development of red and white clover, perennial ryegrass, Kentucky bluegrass, and timothy growing on Ladner clay and Alderwood loam. Appreciable increases in dry matter and nitrogen yield obtained in certain treatments. Other significant effects were noted in flowering and seed production.
Confirmation of the field results was obtained in greenhouse studies on red clover and Olli barley. A search for the source of the increased nitrogen did not reach a definable end but work with the influence of treated plants on soil Rhizobia and Azotobacter suggest that 2,4-D applied to forages may in some instances modify the ecology of the soil flora.
|
Genre | |
Type | |
Language |
eng
|
Date Available |
2012-02-13
|
Provider |
Vancouver : University of British Columbia Library
|
Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
|
DOI |
10.14288/1.0106458
|
URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
|
Campus | |
Scholarly Level |
Graduate
|
Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.