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| Web URL(s): | http://www.graszaad.info/onderzoeksverslagen/Proceedings%20of%20the%207th%20IHSC.pdf#page=222
Last checked: 11/21/2014
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Notes: Item is within a single large file |
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| Publication Type:
| Proceedings |
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| Author(s): | Rijckaert, G. A. |
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| Author Affiliation: | Plant Sciences Unit, Institute for Agricultural and Fisheries Research (ILVO), Merelbeke, Belgium |
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| Title: | Effects of plant growth regulation in seed crops of Italian ryegrass (Lolium multiflorum L.) |
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| Meeting Info.: | Dallas, Texas: April 11-13, 2010 |
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| Source: | Proceedings of the 7th International Herbage Seed Conference. 2010, p. 211-216. |
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| Publishing Information: | s.l.: s.n. |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Growth regulator evaluation; Growth studies; Lolium multiflorum; Plant growth regulators; Seed crops; Seed production; Trinexapac-ethyl
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| Trade Names: | Moddus |
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| Abstract/Contents: | "Despite the official registration of Moddus (trinexapac-ethyl) for growth regulation in C1-seed crops of all ryegrass species in Belgium since 2002, seed growers of Italian ryegrass have not adopted this new management practice. The main reasons for this non-adoption were the limited number of trials (2), the less pesticide-minded cattle farmers and the critical profitability due to very low growers' seed prices during 2002-2006. A new series of trials was conducted for Italian ryegrass seed crops in three consecutive years, i.e., 2007-09. In all trials, eight PGR treatments and an untreated control were evaluated on a tetraploid variety 'Meroa'. The respective rates of Moddus (250 g a.i. l-1) were 0.4 - 0.4+0.4 - 0.8 - 1.2 l ha-1, either with or without methylated seed oil surfactant (Actirob B). Moddus was applied at the 2-3 node growth stage and again 10-20 days later for the split treatment. Across years, the optimal seed yield response ranged from 7.3 to 32.6% over the untreated checks, and also the optimal application rates were different between years, i.e., 1.2 - 0.4 - 0.4 l ha-1 for 2007-08-09, respectively. This could be attributed to a wet or dry season. The mean optimal seed yield over the years increased by about 17% (347 kg ha-1). The addition of the surfactant was not always profitable, except for 2007 (very wet). The split treatment (0.4+0.4) rarely resulted in a higher seed yield when compared with the full rate (0.8). Seed yield responses are discussed in relation to seed yield components, thousand seed weight, straw yield, lodging, stem shortening and seasonal meteorological conditions." |
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| Language: | English |
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| References: | 3 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rijckaert, G. A. 2010. Effects of plant growth regulation in seed crops of Italian ryegrass (Lolium multiflorum L.). p. 211-216. In Proceedings of the 7th International Herbage Seed Conference. Dallas, Texas: April 11-13, 2010. s.l.: s.n. |
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| Web URL(s):
http://www.graszaad.info/onderzoeksverslagen/Proceedings%20of%20the%207th%20IHSC.pdf#page=222
Last checked: 11/21/2014
Requires: PDF Reader
Notes: Item is within a single large file |
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