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| Web URL(s): | http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3180.1978.tb01149.x/epdf
Last checked: 10/13/2015
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| Publication Type:
| Refereed |
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| Author(s): | Williams, E. D. |
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| Author Affiliation: | Rothamsted Experimental Station, Harpenden, Herts, England |
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| Title: | Germination and longevity of seeds of Agropyron repens L. Beauv. and Agrostis gigantea Roth. in soil in relation to different cultivation regimes |
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| Source: | Weed Research. Vol. 18, No. 3, June 1978, p. 129-138. |
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| Publishing Information: | Oxford: Blackwell Scientific Publications |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Seeds; Germination; Elymus repens; Agrostis stolonifera; Cultural methods; Paraquat; Emergence; Persistence
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| Abstract/Contents: | "Results are reported of two experiments done during 1971-76, which investigated the germination and longevity in soil of seeds of Agropyron repens L. Beauv. and Agrostis gigantea Roth. The effects of different cultivation regimes and paraquat were investigated in a field experiment and the effects of different frequencies of cultivation in a sandy loam and silty loam soil were studied in the glasshouse. Seeds of neither species were innately dormant and most germination occurred during the first autumn. Agrostis seeds germinated most readily on the soil surface and persisted longest where the seeds were incorporated in soil at the outset and not cultivated in the spring. In contrast, Agropyron seeds germinated most readily when incorporated in soil at the outset and their depletion was largely independent of cultivations in the spring; they persisted longest where they remained on the soil surface during the first autumn. Paraquat, sprayed on to dry seeds, greatly decreased the number of Agropyron seeds, giving emerged seedlings early during the first autumn but did not affect the number emerging after this. Agrostis was affected little by paraquat. Agrostis seeds were more persistent that Agropyron in most treatments of both experiments; in the field, on average, only about 0·.03% of Agropyron seeds gave emerged seedlings during the fourth year whereas about three times as many Agrostis seedlings would be expected to emerge during the fifth year. The number of seedlings, particularly of Agrostis, emerging in consecutive years did not decrease continuously from year to year. There was some indication that longevity of Agrostis seeds might be greater in a sandy loam than in a silty loam soil. The much smaller percentage of seeds accounted for in the field that in the glasshouse is emphasised and the implications of the findings to practical control measures, particularly that depletion of seed reserves is dependent on initial cultivations, are briefly discussed." |
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| Language: | English |
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| References: | 24 |
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| Note: | Abstract also appears in French
Abstract also appears in German
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Williams, E. D. 1978. Germination and longevity of seeds of Agropyron repens L. Beauv. and Agrostis gigantea Roth. in soil in relation to different cultivation regimes. Weed Res. 18(3):p. 129-138. |
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| Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3180.1978.tb01149.x/epdf
Last checked: 10/13/2015
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 599 .W4 |
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