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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/63/3/AJ0630030430
Last checked: 12/09/2016
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| Publication Type:
| Refereed |
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| Author(s): | Knievel, Daniel P.;
Jacques, Aino V. A.;
Smith, Dale |
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| Author Affiliation: | Knieval and Jacques: Research Assistants; Smith: Professor, Agronomy, University of Wisconsin, Madison, Wisconsin |
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| Title: | Influence of growth stage and stubble height on herbage yields and persistence of smooth bromegrass and timothy |
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| Source: | Agronomy Journal. Vol. 63, No. 3, May/June 1971, p. 430-434. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 5 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/63/3/AJ0630030430
Last checked: 12/09/2016
Access conditions: Item is within a limited-access website
Notes: Abstract only |
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| Keywords: | TIC Keywords: Mowing height; Growth stages; Yield response; Bromus inermis; Phleum pratense; Mowing timing; Clipping weight; Weed resistance; Growth rate; Tillering rate; Temperatures
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| Cultivar Names: | Timothy |
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| Abstract/Contents: | "Although it is generally accepted that time of cutting and height of cutting are important in yield and persistance [persistence] of forage grasses, studies of their interaction have produced variable results. Differences in environmental conditions (e.g., temperature and moisture) among field investigations could be responsible for this variability. Smooth bromegrass and timothy were harvested at three growth stages and two cutting heights in the field. Timothy was grown at warm and cool temperatures in the growth chamber and harvested at five growth stages and two cutting heights. Highest seasonal herbage yields and stand persistance [persistence] of smooth bromegrass (Bromus inermis Leyss.) and timothy (Phleum pratense L.) in the field were obtained when the first crop was cut at early anthesis. Stand persistence was not affected by stubble height when both grasses were cut at early anthesis. Seasonal herbage yields were higher with a 4-cm than with a 10-cm stubble height. Bromegrass was more productive and persistent than timothy over the entire experimental period. Very few weeds occurred in the bromegrass during 1967 and 1968, and in the timothy during 1967. In 1968, timothy stands cut at early anthesis contained only 1 to 2% of weeds, but there were 6 to 15% in treatments cut at the tillering or inflorescence emergence stages. Highest herbage growth rate (HGR) and tillering rate of timothy in the growth chamber occurred with cutting at an early leafy stage or at early anthesis at both cool (18 C day/10 C night) and warm (32 C day/24 C night) temperatures. Lowest HGR occurred with cutting at mid-stem elongation and inflorescence emergence. Warm temperatures significantly reduced HGR and tillering rates at all growth stages and stubble heights. Cutting at a 4-cm compared with a 12-cm stubble height significantly lowered HGR at almost all growth stages at warm temperatures, but only at the tillering stage at cool temperatures. These results indicate that the yield and stand persistance response of cool-season grasses to growth stage at cutting and height of cutting is partially dependent on temperature before and after cutting." |
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| Language: | English |
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| References: | 23 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Knievel, D. P., A. V. A. Jacques, and D. Smith. 1971. Influence of growth stage and stubble height on herbage yields and persistence of smooth bromegrass and timothy. Agron. J. 63(3):p. 430-434. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/63/3/AJ0630030430
Last checked: 12/09/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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