Texas, USA 2010 - International Herbage Seed Group

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Significant differences were recorded in the number of seed in inflorescence (see. Figure 1). Atthe most grass species the number of the seed was higher at treated grasses; however, at the somespecies then number of the seed was lower in consequence with higher number of fertile stems.Positive influence of trinexapac-ethyl application on increase of number of perennial ryegrassseed was observed by Silberstein et al. (2002), who found out that TE increases number ofcreated ripe seed, while potential number of seed isn't impressed with. Application TE so haspositively effect on Floret site utilization (FSU). According to Young et al. (2007) the nitrogenrate increasing has significant effect on increasing of both, actual and potential seed number, butinsignificant effect on FSU in perennial ryegrass.Reduction in plant height and lodging was recorded on all the treated plots. Application oftrinexapac-ethyl on cool season grass seed crops can significant increases seed yields mainly dueto number of seed increasing. There is slight variation in the increasing of seed yield betweengrass species, but average increasing of seed yield is about 12-15 %. Based on trials the PGRModdus (trinexapac-ethyl 250 g l -1 ) at 0.8 l ha -1 preferably applied at growth stage GS 31-32 or0.4 l ha -1 applied 2 times (GS 29 and GS 32) has been allowed for minor use in seed crops ofeach grass species under study in the Czech Republic.201
Table 1 The effect of trinexapac–ethyl on seed yield selected grass species<strong>Seed</strong> yield2007 2008 averagespecies treatment kg ha -1 Tukey kg ha -1 Tukey kg ha -1 rel.PerennialryegrassAnnualryegrassMeadowfescueuntreated 933.6 d 554.6 e 744.1 100TE 200 1230.1 ab 708.0 a 969.1 130TE 2x 100 1238.2 ab 696.0 abc 967.1 130untreated 1748.4 a 1655.0 c 1701.7 100TE 200 1792.8 a 1842.6 ab 1817.7 107TE 2x 100 1860.2 a 1757.5 a 1808.8 106untreated 718.8 de 356.2 ab 537.5 100TE 200 765.1 cd 378.2 ab 571.7 106TE 2x 100 800.8 bcd 521.4 a 661.1 123Red fescue untreated 902.0 ab 1194.5 bc 1048.3 100TE 200 995.4 a 1348.8 a 1172.1 112TE 2x 100 982.7 a 1227.0 ab 1104.9 105Kentucky bluegrassuntreated 346.3 bcd 517.0 b 431.7 100TE 200 471.3 a 676.0 a 573.6 133TE 2x 100 413.7 ab 628.7 ab 521.2 121Timothy untreated 834.7 a 640.0 ab 737.3 100TE 200 859.1 a 706.6 a 782.8 106TE 2x 100 903.0 a 729.2 a 816.1 111Cocksfoot untreated 838.3 abcd 625.5 ab 731.9 100TE 200 799.8 abcd 762.8 a 781.3 107TE 2x 100 862.0 abc 694.7 ab 778.4 106FestuloliumLofaFestuloliumHykoruntreated 893.8 bcdef 734.9 bc 814.4 100TE 200 1055.4 abc 767.0 ab 911.2 111TE 2x 100 998.1 abcde 877.2 a 937.6 115untreated 938.4 a 952.4 abc 945.4 100TE 200 937.2 a 1099.1 a 1018.1 107TE 2x 100 950.6 a 1147.9 a 1049.2 111Tall oat grass untreated 516.6 bc 367.4 c 442.0 100TE 200 671.5 a 506.1 ab 588.8 133TE 2x 100 549.3 b 513.7 a 531.5 120Yellow oatgrassuntreated 266.8 c 207.6 a 237.2 100TE 200 285.1 a 231.3 a 258.2 109TE 2x 100 302.9 b 239.2 ab 271.0 114202
Page 1 and 2:
Proceedings of the 7th Internationa
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Table of ContentsORAL PRESENTATIONS
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Seed yield components and yield per
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International Herbage Seed Conferen
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16:15 - 16:30 Reliability of salini
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Hotel expense is covered for night
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40,000 were slaves (McDonald, 2007)
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Fig. 1. Texas AgriLife Research and
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$7 billion for cattle, $3 billion f
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principle and encourages both AgriL
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eceived by growers, the above perce
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seed conditioning plants are locate
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Table 4.Hectares of open-field burn
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system, a seed crop is produced fro
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Fig. 1. Land resource areas of Texa
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y land owners. Seed yields are low
Page 33 and 34:
The influence of planting density o
Page 35 and 36:
Simple correlation and regression a
Page 37 and 38:
Variation in seed shattering in a g
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Seed retention (SR) was calculated
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mm160120Precipitation8040020Km h -1
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Young, B. A. (1986). A Source of Re
Page 45 and 46:
Several methods are commonly used f
Page 47 and 48:
Table 3. Effect of the length of ha
Page 49 and 50:
Alfalfa seed production in semi-hum
Page 51 and 52:
Rather near the meteorological stat
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ReferencesBolaños-Aguilar E.D., Hu
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ased bioenergy conversion plants wa
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Table 1. Average distances required
Page 59 and 60:
Figure 1. Optimized locations for 1
Page 61 and 62:
Perennial ryegrass (Lolium perenne
Page 63 and 64:
Relative Seed Yieldsingle composite
Page 65 and 66:
Flowers, M.D.; Hart, J.M.; Young II
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Thus, similar to tissue tests, remo
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Conclusion:Perhaps our most importa
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Modelling critical NDVI curves in p
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The five spectral reflectance measu
Page 75 and 76:
Harvest loss in ryegrass seed crops
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Larger than expected harvest losses
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Rolston, P.; Trethewey, J.; McCloy,
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Optical sensors have the potential
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Figure 2. Seed yield response to ap
Page 85 and 86:
Flowers, M. D., Hart, J.M., Young I
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In 2010, France has launched the fo
Page 89 and 90:
Yield (% maximum)ConclusionThe resu
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Plant N uptakeN unavailableSoil nit
Page 93 and 94:
Stresses associated with germinatio
Page 95 and 96:
correspond to electrical conductivi
Page 97 and 98:
applied later in the fall was more
Page 99 and 100:
Figure 2. Establishment of five ove
Page 101 and 102:
The seed vigour testing was perform
Page 103 and 104:
Table 1. Germination index (GI) for
Page 105 and 106:
Reliability of salinity screening L
Page 107 and 108:
AcknowledgmentThis research was sup
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Table 2. Greenhouse salinity screen
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The seeds were collected from the A
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increases germination to its potent
Page 115 and 116:
Light, lodging and flag leaves-what
Page 117 and 118:
Relative seed yieldSeed yield (kg/h
Page 119 and 120:
Hampton, J.G.; Clemence, T.G.A.; He
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The seed set is of major importance
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In grass species with poor seed ret
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support system to optimize fungicid
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weather stations in grass seed fiel
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ust resistance loci in Lolium peren
Page 131 and 132:
Seed yield variation in a red clove
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100Seed yield plant -1 (g)806040200
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Marden, J. H. 1984. Remote percepti
Page 137 and 138:
Crimson clover seed production in t
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Piper, C.V. 1935. Forage plants and
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deal of investigation into the caus
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genes and subsequent ability to pro
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Gatenby, W.A., S.C. Munday-Finch, A
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Control of Vulpia myuros in red fes
Page 149 and 150:
The strip design provides an opport
Page 151 and 152:
The pot experiments did not reveale
Page 153 and 154:
CharacterWeed abundance1 A few plan
Page 155 and 156:
Jensen, P. K. (2010) Longevity of s
Page 157 and 158:
Effects of intraspecific competitio
Page 159 and 160:
flowering, Gangi accumulated a high
Page 161 and 162: The seed yield of Gangi was, on ave
Page 163 and 164: Seed yield components and yield per
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
Page 177 and 178: Corvallis where they were debearded
Page 179 and 180: Table 1. Effect of Palisade growth
Page 181 and 182: Variations on potential and harvest
Page 183 and 184: Determination of optimum desiccatio
Page 185 and 186: Relative seed yield (%)Flowers/m225
Page 187 and 188: Harvesting too soon after peak flow
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
Page 195 and 196: Kentucky bluegrass (Poa pratensis L
Page 197 and 198: urn residue management (Fig. 1 and
Page 199 and 200: Comparing herbicide selectivity in
Page 201 and 202: Development of new tetraploid Chlor
Page 203 and 204: Following 4 (or 5) cycles of select
Page 205 and 206: Loch, D.S., Rethman, N.F.G. & van N
Page 207 and 208: KBGcocksfootHykorLofatimothymeadowf
Page 209 and 210: Figure 2 Relative seed yield (%) se
Page 211: and GA 4 . In consequence this inac
Page 215 and 216: Silberstein, T.B., Young, W.C. III,
Page 217 and 218: inflorescece number and seed yield
Page 219 and 220: Germination of Lolium multiflorum g
Page 221 and 222: Effect of sowing density on seed yi
Page 223 and 224: y-products of this grass seed crop
Page 225 and 226: Table 2. Effect of PGR on seed yiel
Page 227 and 228: Further culm length measurements ga
Page 229 and 230: chlorophyllometer. Measurements wer
Page 231 and 232: Table 2. Photosynthesis rate of fla
Page 233 and 234: Organization of grass seed research
Page 235 and 236: Path Coefficient and Ridge Regressi
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. (
Page 249 and 250: Long-term Evaluation of Annual Ryeg
Page 251 and 252: seed yield. All systems of establis
Page 253 and 254: Preliminary results after four year
Page 255 and 256: Casals, Marie-LaureFNAMSImpasse du
Page 257 and 258: Mao, PeishengForage Seed LabChina A
Page 259 and 260: Vanasche, DavidVanasche Farm36130 N
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Texas, USA 2010 - International Herbage Seed Group

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