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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/63/6/AJ0630060868
Last checked: 12/09/2016
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| Publication Type:
| Refereed |
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| Author(s): | McGinnies, William J. |
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| Author Affiliation: | Range Scientist, Crops Research Laboratory, Plant Science Research Service, Agricultural Research Division, United States Department of Agriculture, Fort Collins, Colorado |
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| Title: | Effects of controlled plant spacing on growth and mortality of three range grasses |
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| Source: | Agronomy Journal. Vol. 63, No. 6, November/December 1971, p. 868-870. |
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| Publishing Information: | Washington: American Society of Agronomy |
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| # of Pages: | 3 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/63/6/AJ0630060868
Last checked: 12/09/2016
Access conditions: Item is within a limited-access website
Notes: Abstract only |
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| Keywords: | TIC Keywords: Spacing; Growth factors; Agropyron desertorum; Elymus junceus; Plant density; Root-shoot ratio; Bouteloua gracilis; Pipes; Root weight; Yield response; Root growth; Growth studies
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| Abstract/Contents: | "A new technique was devised to study effects of plant spacing on growth and mortality of range grasses under semiarid conditions. Growing area per plant was controlled by establishing plants in sheetmetal pipes set vertically in the soil; the pipes restricted the plant roots to a predetermined surface area of soil. Pipes with diameters of 10.2, 15.2, 22.9, 30.5, and 45.7 cm simulated plant densities of approximately 123, 55, 24, 14, and 6 plants/m2. Crested wheatgrass (Agropyron destertorum (Fisch. ex Link) Schult.), Russian wildrye (Elymus junceus Fisch.) and blue grama (Bouteloua gracilis (H.B.K.) Lag. ex Steud.) were grown in pipes for 6 years in northern Colorado. As growing space became more restricted: (a) seedstalk height decreased; (b) number of seedstalks/plant decreased; (c) number of seedstalks/m2 increased; and (d) herbage yield/plant decreased. After 6 years, two sets of pipes of each species were dug out and the soil was washed off of the roots. As pipe diameter decreased, the root/shoot ratio increased for all species; and for crested wheatgrass and Russian wildrye, root yield/ha increased and the percentage of total root yield found in the surface 20 cm of soil increased. It was concluded that the use of sheetmetal pipes to restrict the area occupied by individual plants is a satsifactory technique for evaluating some effects of plant spacing under semiarid conditions." |
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| Language: | English |
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| References: | 9 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McGinnies, W. J. 1971. Effects of controlled plant spacing on growth and mortality of three range grasses. Agron. J. 63(6):p. 868-870. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/63/6/AJ0630060868
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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