Texas, USA 2010 - International Herbage Seed Group
Texas, USA 2010 - International Herbage Seed Group Texas, USA 2010 - International Herbage Seed Group
Aurora super SGThe good selectivity of Aurora super SG (carfentrazone-ethyl + MCPP-P) in both doses wasrecorded on all tested grass species. However, slight growth retardations were observed oncocksfoot and KBG treated by double dose of herbicide. Small chlorosis, mainly in first harvestyear, was recorded on Festulolium cv. Hykor. If the base dose was tested the seed yields of allgrasses without meadow fescue were comparable or higher to standard treatment.Figure 1 Relative seed yield (%) selected grass species treated by ArratNevertheless, if the double doses was used the seed yields all the species were significantlylower compared to standard in one harvest year at the least. Based on trial results the Aurorasuper SG in dose 1.0 kg ha -1 has been allowed for minor use in seed crops of perennial ryegrass,red fescue, Festulolium, timothy, cocksfoot and KBG.ArkemCrops treated by Arkem (metsulfuron-methyl) showed relatively strong symptoms of injury,mainly growth retardation. Damage of meadow fescue and Festulolium in the first harvest yearwas very strong and so the Arkem was rejected from trials in the given species for subsequentyears. This is corresponding with results obtained by Mathiassen et al. (2007). Inferior symptomswere observed only on KBG, cocksfoot and timothy. The seed yields were compared to thestandard but if double dose was used the seed yield of cocksfoot became lower. Based on resultsof trials the Arkem in dose 30 g ha -1 has been allowed for minor use in seed crops of KGB,cocksfoot and timothy.197
Figure 2 Relative seed yield (%) selected grass species treated by Aurora super SGCallisto 480 SCThe herbicide Callisto 480 SC (mesotrione) caused strong chlorosis after application, mainly onFestulolium and timothy if a double dose was used. However, later the symptoms of chlorosisfade away. If the base dose was tested the seed yields of all grasses without meadow fescue werecomparable to standard. Nevertheless, if the double dose was applied the seed yields ofFestulolium and timothy in the third harvest year were lower compared to control. Based ontrials the Callisto 480 SC in dose 0.3 l ha -1 has been allowed for minor use in seed crops ofFestulolium and timothy.HusarThe herbicide Husar (iodosulfuron + mefenpyr-diethyl) was applied only in KBG and cocksfoot.The slight symptoms of growth retardation were recorded on both species, mainly if double doseof Husar was applied. The seed yield was satisfied but when it was applied in double dose theseed yield of cocksfoot was significantly decreased. Nevertheless, due to good control of Poaannua, one from most problematic weeds in grass seed crop (Cagań et al. 2006), this herbicide isallowed for minor use in seed crops of KGB and cocksfoot at 200 g ha -1 .ReferencesCagań, B., Macháč, J., Frydrych, J. & Macháč, R. (2006) Occurrence of biotic harmful agents inCzech grass seed production (1995-2004). Plant protection Science 42 (2): p. 58-65Mathiassen, S.K., Rabølle, M. & Kudsk, P (2007) Prediction of herbicide selectivity in grassseed crops from pot experiments. In Aamlid, T.S., Havstad, L.T. & Boelt, B (eds) Seedproduction in the northern light. Proceedings of the Sixth International Herbage SeedConference, Gjennestad, Norway, June 18-20, 2007. p. 169-171.198
- Page 157 and 158: Effects of intraspecific competitio
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- Page 161 and 162: The seed yield of Gangi was, on ave
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- Page 165 and 166: ResultsVariation among populations
- Page 167 and 168: Table 2. Means of total seeds per p
- Page 169 and 170: Ryle, G. J. (1970). Partition of As
- Page 171 and 172: Control of Apion trifolii in red cl
- Page 173 and 174: Number of seeds /inflorescencesimil
- Page 175 and 176: population. However, in spite of th
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- Page 179 and 180: Table 1. Effect of Palisade growth
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- Page 185 and 186: Relative seed yield (%)Flowers/m225
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- Page 189 and 190: Annual ryegrass seed production in
- Page 191 and 192: seed yield, kg/haExtractable Al, mg
- Page 193 and 194: ReferencesHaby, V.A. (1995). Soil m
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- Page 201 and 202: Development of new tetraploid Chlor
- Page 203 and 204: Following 4 (or 5) cycles of select
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- Page 207: KBGcocksfootHykorLofatimothymeadowf
- Page 211 and 212: and GA 4 . In consequence this inac
- Page 213 and 214: Table 1 The effect of trinexapac-et
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- Page 217 and 218: inflorescece number and seed yield
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- Page 231 and 232: Table 2. Photosynthesis rate of fla
- Page 233 and 234: Organization of grass seed research
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- Page 237 and 238: through y4 (0.133). Increasing y 1
- Page 239 and 240: Newell G.J., Lee B. (1981)Ridge reg
- Page 241 and 242: Relative humidity, seed moisture co
- Page 243 and 244: Ergovaline contents in grasses from
- Page 245 and 246: 11.8 % (Central East) to 40.0% (Nor
- Page 247 and 248: ReferencesBony, S. & Delatour, P. (
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- Page 251 and 252: seed yield. All systems of establis
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- Page 255 and 256: Casals, Marie-LaureFNAMSImpasse du
- Page 257 and 258: Mao, PeishengForage Seed LabChina A
Aurora super SGThe good selectivity of Aurora super SG (carfentrazone-ethyl + MCPP-P) in both doses wasrecorded on all tested grass species. However, slight growth retardations were observed oncocksfoot and KBG treated by double dose of herbicide. Small chlorosis, mainly in first harvestyear, was recorded on Festulolium cv. Hykor. If the base dose was tested the seed yields of allgrasses without meadow fescue were comparable or higher to standard treatment.Figure 1 Relative seed yield (%) selected grass species treated by ArratNevertheless, if the double doses was used the seed yields all the species were significantlylower compared to standard in one harvest year at the least. Based on trial results the Aurorasuper SG in dose 1.0 kg ha -1 has been allowed for minor use in seed crops of perennial ryegrass,red fescue, Festulolium, timothy, cocksfoot and KBG.ArkemCrops treated by Arkem (metsulfuron-methyl) showed relatively strong symptoms of injury,mainly growth retardation. Damage of meadow fescue and Festulolium in the first harvest yearwas very strong and so the Arkem was rejected from trials in the given species for subsequentyears. This is corresponding with results obtained by Mathiassen et al. (2007). Inferior symptomswere observed only on KBG, cocksfoot and timothy. The seed yields were compared to thestandard but if double dose was used the seed yield of cocksfoot became lower. Based on resultsof trials the Arkem in dose 30 g ha -1 has been allowed for minor use in seed crops of KGB,cocksfoot and timothy.197
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