Texas, USA 2010 - International Herbage Seed Group

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Fotyma, E. & Bezduszniak, D. (2000): Valuation of the nitrogen nutritional status of wintercereals on the ground of leaf greenness index. Fragmenta Agronomica 4, 29-45.Gislum, R. & Boelt, B. (1999): The effect of autumn nitrogen application in tall fescue (Festucaarundinacea Schreb.) and red fescue (Festuca rubra L.) grown for seed. In: Falcinelli, M.,Rosellini, D. (Eds.) Herbage seed as a key factor for improving production andenvironmental quality. Proceedings of the 4 th International Herbage Seed Conference,Italy, 96-101.Hart, J.A., Rolston, P., Mellbye, M.E., Siberstein, T.B., Young, W.C.III, McCloy, B.L.,Gingrich, G.A., Christensen, N.W. & Gislum, R. (2007): Comparison of soil N tests forprediction of spring N rate in perennial ryegrass seed production. In: Aamlid T.S, HavstadL.T, Boelt B. (Eds.) Seed production in the northern light. Proceedings of the 6 thInternational Herbage Seed Conference, Norway, 239-243.221
Organization of grass seed research in the NetherlandsS. de Vlieger 1 & J. Wander 21. Agrarisch Innovatie en Kenniscentrum Rusthoeve, Noordlangeweg 42, 4486 PR, Colijnsplaat, TheNetherlands, samdevlieger@proefboerderij-rusthoeve.nl, +31-107072132. DLV Plant, De Drieslag 15, 8251 JZ Dronten, The Netherlands, j.wander@dlvplant.nl, +31-651376489AbstractIn 2008 it was decided that all research in grass seed would be allocated at the AgriculturalInnovation and Knowledge centre Rusthoeve at Colijnsplaat in the Netherlands. Under the flagof this centre a Grass seed Expertise Centre was founded in which Rusthoeve and DLV Plantparticipate in doing research and trails for the Grass seed sector in general.The assignment of the Expertise Centre is to gather all necessary information and knowledge tokeep up with the latest developments in this specialized crop and also take the initiative to findanswers for problems and improvements of the technical and economical aspects of grass seedproduction. The Expertise Centre operates in commission by a farmers interest working groupfor grass seed production which, in consultation with the Expertise Centre, determines a yearlyresearch program. The implemented projects are also financed through means of this workinggroup, a farmers contribution to this fund is based on a payment per hectare grass seedproduction.To meet up with the above mentioned both Johan Wander and Sam de Vlieger can, due to theirlong time experience in respectively grass seed research and grass seed production, fall back on abroad network of institutes and specialists. Results of research are published on several websitesas www.kennisakker.nl and www.graszaad.info. Currently the Expertise Centre is performing ascreening test for herbicides in 20 different grass seed species. Furthermore the research programfor 2010 comprises tests with a growth regulator and the testing of remedies against the loss ofseed during the ripening.222
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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
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The influence of planting density o
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Simple correlation and regression a
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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
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Several methods are commonly used f
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Table 3. Effect of the length of ha
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Alfalfa seed production in semi-hum
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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
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Figure 1. Optimized locations for 1
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Perennial ryegrass (Lolium perenne
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Relative Seed Yieldsingle composite
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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
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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
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Flowers, M. D., Hart, J.M., Young I
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In 2010, France has launched the fo
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Yield (% maximum)ConclusionThe resu
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Plant N uptakeN unavailableSoil nit
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Stresses associated with germinatio
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correspond to electrical conductivi
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applied later in the fall was more
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Figure 2. Establishment of five ove
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The seed vigour testing was perform
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Table 1. Germination index (GI) for
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Reliability of salinity screening L
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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
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Light, lodging and flag leaves-what
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Relative seed yieldSeed yield (kg/h
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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
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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
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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
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The strip design provides an opport
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The pot experiments did not reveale
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CharacterWeed abundance1 A few plan
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Jensen, P. K. (2010) Longevity of s
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Effects of intraspecific competitio
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flowering, Gangi accumulated a high
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The seed yield of Gangi was, on ave
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Seed yield components and yield per
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ResultsVariation among populations
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Table 2. Means of total seeds per p
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Ryle, G. J. (1970). Partition of As
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Control of Apion trifolii in red cl
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Number of seeds /inflorescencesimil
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population. However, in spite of th
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Corvallis where they were debearded
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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 212: and GA 4 . In consequence this inac
Page 213 and 214: Table 1 The effect of trinexapac-et
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: Table 2. Photosynthesis rate of fla
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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