Growth Stage Influences Mesotrione Efficacy and Fate in Two Bluegrass (Poa) Species
Mesotrione provides PRE and early POST control of annual bluegrass during Kentucky bluegrass establishment from seed, but applications do not effectively control multitiller plants. The physiological effects of growth stage on efficacy and the basis of mesotrione selectivity between species is not w...
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| Veröffentlicht in: | Weed technology 2016-04, Vol.30 (2), p.524-532 |
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| description | Mesotrione provides PRE and early POST control of annual bluegrass during Kentucky bluegrass establishment from seed, but applications do not effectively control multitiller plants. The physiological effects of growth stage on efficacy and the basis of mesotrione selectivity between species is not well understood. The objectives of this research were to evaluate mesotrione behavior in these species at three growth stages: pretiller (3 to 5 leaves), 1-tiller, and multitiller (5 to 7 tillers). In greenhouse experiments, a single mesotrione application at 280 g ai ha−1 injured pretiller, 1-tiller, and multitiller annual bluegrass 54, 33, and 11% at 4 wk after initial treatment (WAIT), respectively. A sequential application of mesotrione increased injury to pretiller and 1-tiller annual bluegrass by 20 and 17% from a single treatment, respectively. Sequential mesotrione applications caused at least 14% injury to multitiller annual bluegrass and Kentucky bluegrass at all growth stages and did not reduce tillering compared to the nontreated. Annual bluegrass absorbed 34% more root-applied 14C-mesotrione than Kentucky bluegrass in hydroponic culture, but relative differences (Bq g−1) among growth stages were not detected for both species. Averaged across growth stages, annual and Kentucky bluegrass absorbed 31 and 35% of the applied radioactivity after foliar treatments, respectively. However, averaged across species, multitiller plants metabolized approximately two times more 14C-mesotrione than pretiller and 1-tiller plants. Overall, the selectivity of mesotrione for annual bluegrass control during Kentucky bluegrass establishment results from differential levels of root absorption. Mesotrione has limited efficacy for controlling multitiller annual bluegrass due to enhanced degradation compared to pretiller and 1-tiller plants. Nomenclature Mesotrione; annual bluegrass, Poa annua L.; Kentucky bluegrass, Poa pratensis L. ‘Midnight'. Mesotrione brinda control de Poa annua en PRE y POST temprano durante el establecimiento del césped Poa pratensis a partir de semilla, pero las aplicaciones no controlan efectivamente plantas en el estadio de múltiples hijuelos. Los efectos fisiológicos del estadio de desarrollo sobre la eficacia y las bases de la selectividad de mesotrione entre especies no se conocen bien. Los objetivos de esta investigación fueron evaluar el comportamiento de mesotrione en estas especies en tres estadios de desarrollo: pre-hijuelo (3 a 5 hojas), 1 |
| doi_str_mv | 10.1614/WT-D-15-00153.1 |
| format | Article |
| fullrecord | <record><control><sourceid>jstor_proqu</sourceid><recordid>TN_cdi_proquest_journals_1794522966</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><jstor_id>24856088</jstor_id><sourcerecordid>24856088</sourcerecordid><originalsourceid>FETCH-LOGICAL-b416t-d3ca7204b91b0fc4649577e0cfc0ea16d6f75932df91762227a42728927ab6373</originalsourceid><addsrcrecordid>eNqFkEtLAzEUhYMoWKtrV0LAjS5ik0weM0vty0JFoSN1FzJpUqfUSU2mlP57oxW3ru6F851zLweAS4LviCCsNy_RABGOMCY8uyNHoEM4x4hKho9BB-cFRjiTb6fgLMZVggSluANm4-B37TuctXpp4aRx661tjI3wyUbfhto3Fg6dq402e6ibBRzp1sK6geXOw4cEL4OOEd68eH0LZxtrahvPwYnT62gvfmcXvI6GZf8RTZ_Hk_79FFWMiBYtMqMlxawqSIWdYYIVXEqLjTPYaiIWwkleZHThCiLTt1RqRiXNi7RUIpNZF1wfcjfBf25tbNXKb0OTTioiC8YpLYRIVO9AmeBjDNapTag_dNgrgtV3c2peqoEiXP00p0hyXB0cq9j68IdTlnOB8zzp6KBXtU_9_Jv3BYTTdvY</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1794522966</pqid></control><display><type>article</type><title>Growth Stage Influences Mesotrione Efficacy and Fate in Two Bluegrass (Poa) Species</title><source>JSTOR Archive Collection A-Z Listing</source><source>Cambridge University Press Journals Complete</source><creator>Yu, Jialin ; McCullough, Patrick E</creator><creatorcontrib>Yu, Jialin ; McCullough, Patrick E</creatorcontrib><description>Mesotrione provides PRE and early POST control of annual bluegrass during Kentucky bluegrass establishment from seed, but applications do not effectively control multitiller plants. The physiological effects of growth stage on efficacy and the basis of mesotrione selectivity between species is not well understood. The objectives of this research were to evaluate mesotrione behavior in these species at three growth stages: pretiller (3 to 5 leaves), 1-tiller, and multitiller (5 to 7 tillers). In greenhouse experiments, a single mesotrione application at 280 g ai ha−1 injured pretiller, 1-tiller, and multitiller annual bluegrass 54, 33, and 11% at 4 wk after initial treatment (WAIT), respectively. A sequential application of mesotrione increased injury to pretiller and 1-tiller annual bluegrass by 20 and 17% from a single treatment, respectively. Sequential mesotrione applications caused at least 14% injury to multitiller annual bluegrass and Kentucky bluegrass at all growth stages and did not reduce tillering compared to the nontreated. Annual bluegrass absorbed 34% more root-applied 14C-mesotrione than Kentucky bluegrass in hydroponic culture, but relative differences (Bq g−1) among growth stages were not detected for both species. Averaged across growth stages, annual and Kentucky bluegrass absorbed 31 and 35% of the applied radioactivity after foliar treatments, respectively. However, averaged across species, multitiller plants metabolized approximately two times more 14C-mesotrione than pretiller and 1-tiller plants. Overall, the selectivity of mesotrione for annual bluegrass control during Kentucky bluegrass establishment results from differential levels of root absorption. Mesotrione has limited efficacy for controlling multitiller annual bluegrass due to enhanced degradation compared to pretiller and 1-tiller plants. Nomenclature Mesotrione; annual bluegrass, Poa annua L.; Kentucky bluegrass, Poa pratensis L. ‘Midnight'. Mesotrione brinda control de Poa annua en PRE y POST temprano durante el establecimiento del césped Poa pratensis a partir de semilla, pero las aplicaciones no controlan efectivamente plantas en el estadio de múltiples hijuelos. Los efectos fisiológicos del estadio de desarrollo sobre la eficacia y las bases de la selectividad de mesotrione entre especies no se conocen bien. Los objetivos de esta investigación fueron evaluar el comportamiento de mesotrione en estas especies en tres estadios de desarrollo: pre-hijuelo (3 a 5 hojas), 1-hijuelo, y múltiples hijuelos (5 a 7 hijuelos). En experimentos de invernadero, una aplicación sencilla de mesotrione a 280 g ai ha−1 dañó P. annua en el estadio de pre-hijuelo, 1-hijuelo, y múltiples hijuelos 54%, 33, y 11% a 4 semanas después del tratamiento inicial (WAIT), respectivamente. Una aplicación secuencial de mesotrione aumentó el daño a P. annua en los estadios pre-hijuelo y 1-hijuelo en 20 y 17%, en comparación con el tratamiento sencillo, respectivamente. Las aplicaciones secuenciales de mesotrione causaron al menos 14% de daño a P. annua en el estadio de múltiples hijuelos y al césped P. pratensis en todos los estadios de desarrollo, y no redujo la producción de hijuelos al compararse con el testigo sin tratamiento. P. annua absorbió 34% más 14C-mesotrione aplicado a la raíz que P. pratensis en un cultivo hidropónico, pero diferencias relativas (Bq g−1) entre los estadios de desarrollo no fueron detectadas en ninguna de las especies. Al promediar los estadios de desarrollo, P. annua y P. pratensis absorbieron 31 y 35% de la radioactividad aplicada después de los tratamientos foliares, respectivamente. Sin embargo, al promediar las especies, las plantas en el estadio de múltiples hijuelos metabolizaron aproximadamente el doble de 14C-mesotrione que las plantas en pre-hijuelos y 1-hijuelo. En general, la selectividad de mesotrione para el control de P. annua durante el establecimiento del césped P. pratensis resulta de niveles diferenciales de absorción radical. Mesotrione tiene eficacia limitada para el control de P. annua en el estadio de múltiples hijuelos producto de una mayor degradación del herbicida al compararse con plantas en los estadios de pre-hijuelo y 1-hijuelos.</description><identifier>ISSN: 0890-037X</identifier><identifier>EISSN: 1550-2740</identifier><identifier>DOI: 10.1614/WT-D-15-00153.1</identifier><language>eng</language><publisher>Lawrence: The Weed Science Society of America</publisher><subject>Absorption ; Annual plants ; Herbicides ; Hydroponics ; Ice ; Lawns ; Metabolites ; placement ; Plant growth ; Plant roots ; Plants ; Radioactive decay ; Radioactivity ; selectivity ; Sorghum ; Tillering ; Tillers ; translocation ; Turf grasses ; turfgrass ; Turfgrasses ; WEED MANAGEMENT—OTHER CROPS/AREAS ; Winter</subject><ispartof>Weed technology, 2016-04, Vol.30 (2), p.524-532</ispartof><rights>Copyright 2016 Weed Science Society of America</rights><rights>Copyright Allen Press Publishing Services Apr-Jun 2016</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-b416t-d3ca7204b91b0fc4649577e0cfc0ea16d6f75932df91762227a42728927ab6373</citedby><cites>FETCH-LOGICAL-b416t-d3ca7204b91b0fc4649577e0cfc0ea16d6f75932df91762227a42728927ab6373</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/24856088$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/24856088$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27922,27923,58015,58248</link.rule.ids></links><search><creatorcontrib>Yu, Jialin</creatorcontrib><creatorcontrib>McCullough, Patrick E</creatorcontrib><title>Growth Stage Influences Mesotrione Efficacy and Fate in Two Bluegrass (Poa) Species</title><title>Weed technology</title><description>Mesotrione provides PRE and early POST control of annual bluegrass during Kentucky bluegrass establishment from seed, but applications do not effectively control multitiller plants. The physiological effects of growth stage on efficacy and the basis of mesotrione selectivity between species is not well understood. The objectives of this research were to evaluate mesotrione behavior in these species at three growth stages: pretiller (3 to 5 leaves), 1-tiller, and multitiller (5 to 7 tillers). In greenhouse experiments, a single mesotrione application at 280 g ai ha−1 injured pretiller, 1-tiller, and multitiller annual bluegrass 54, 33, and 11% at 4 wk after initial treatment (WAIT), respectively. A sequential application of mesotrione increased injury to pretiller and 1-tiller annual bluegrass by 20 and 17% from a single treatment, respectively. Sequential mesotrione applications caused at least 14% injury to multitiller annual bluegrass and Kentucky bluegrass at all growth stages and did not reduce tillering compared to the nontreated. Annual bluegrass absorbed 34% more root-applied 14C-mesotrione than Kentucky bluegrass in hydroponic culture, but relative differences (Bq g−1) among growth stages were not detected for both species. Averaged across growth stages, annual and Kentucky bluegrass absorbed 31 and 35% of the applied radioactivity after foliar treatments, respectively. However, averaged across species, multitiller plants metabolized approximately two times more 14C-mesotrione than pretiller and 1-tiller plants. Overall, the selectivity of mesotrione for annual bluegrass control during Kentucky bluegrass establishment results from differential levels of root absorption. Mesotrione has limited efficacy for controlling multitiller annual bluegrass due to enhanced degradation compared to pretiller and 1-tiller plants. Nomenclature Mesotrione; annual bluegrass, Poa annua L.; Kentucky bluegrass, Poa pratensis L. ‘Midnight'. Mesotrione brinda control de Poa annua en PRE y POST temprano durante el establecimiento del césped Poa pratensis a partir de semilla, pero las aplicaciones no controlan efectivamente plantas en el estadio de múltiples hijuelos. Los efectos fisiológicos del estadio de desarrollo sobre la eficacia y las bases de la selectividad de mesotrione entre especies no se conocen bien. Los objetivos de esta investigación fueron evaluar el comportamiento de mesotrione en estas especies en tres estadios de desarrollo: pre-hijuelo (3 a 5 hojas), 1-hijuelo, y múltiples hijuelos (5 a 7 hijuelos). En experimentos de invernadero, una aplicación sencilla de mesotrione a 280 g ai ha−1 dañó P. annua en el estadio de pre-hijuelo, 1-hijuelo, y múltiples hijuelos 54%, 33, y 11% a 4 semanas después del tratamiento inicial (WAIT), respectivamente. Una aplicación secuencial de mesotrione aumentó el daño a P. annua en los estadios pre-hijuelo y 1-hijuelo en 20 y 17%, en comparación con el tratamiento sencillo, respectivamente. Las aplicaciones secuenciales de mesotrione causaron al menos 14% de daño a P. annua en el estadio de múltiples hijuelos y al césped P. pratensis en todos los estadios de desarrollo, y no redujo la producción de hijuelos al compararse con el testigo sin tratamiento. P. annua absorbió 34% más 14C-mesotrione aplicado a la raíz que P. pratensis en un cultivo hidropónico, pero diferencias relativas (Bq g−1) entre los estadios de desarrollo no fueron detectadas en ninguna de las especies. Al promediar los estadios de desarrollo, P. annua y P. pratensis absorbieron 31 y 35% de la radioactividad aplicada después de los tratamientos foliares, respectivamente. Sin embargo, al promediar las especies, las plantas en el estadio de múltiples hijuelos metabolizaron aproximadamente el doble de 14C-mesotrione que las plantas en pre-hijuelos y 1-hijuelo. En general, la selectividad de mesotrione para el control de P. annua durante el establecimiento del césped P. pratensis resulta de niveles diferenciales de absorción radical. Mesotrione tiene eficacia limitada para el control de P. annua en el estadio de múltiples hijuelos producto de una mayor degradación del herbicida al compararse con plantas en los estadios de pre-hijuelo y 1-hijuelos.</description><subject>Absorption</subject><subject>Annual plants</subject><subject>Herbicides</subject><subject>Hydroponics</subject><subject>Ice</subject><subject>Lawns</subject><subject>Metabolites</subject><subject>placement</subject><subject>Plant growth</subject><subject>Plant roots</subject><subject>Plants</subject><subject>Radioactive decay</subject><subject>Radioactivity</subject><subject>selectivity</subject><subject>Sorghum</subject><subject>Tillering</subject><subject>Tillers</subject><subject>translocation</subject><subject>Turf grasses</subject><subject>turfgrass</subject><subject>Turfgrasses</subject><subject>WEED MANAGEMENT—OTHER CROPS/AREAS</subject><subject>Winter</subject><issn>0890-037X</issn><issn>1550-2740</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqFkEtLAzEUhYMoWKtrV0LAjS5ik0weM0vty0JFoSN1FzJpUqfUSU2mlP57oxW3ru6F851zLweAS4LviCCsNy_RABGOMCY8uyNHoEM4x4hKho9BB-cFRjiTb6fgLMZVggSluANm4-B37TuctXpp4aRx661tjI3wyUbfhto3Fg6dq402e6ibBRzp1sK6geXOw4cEL4OOEd68eH0LZxtrahvPwYnT62gvfmcXvI6GZf8RTZ_Hk_79FFWMiBYtMqMlxawqSIWdYYIVXEqLjTPYaiIWwkleZHThCiLTt1RqRiXNi7RUIpNZF1wfcjfBf25tbNXKb0OTTioiC8YpLYRIVO9AmeBjDNapTag_dNgrgtV3c2peqoEiXP00p0hyXB0cq9j68IdTlnOB8zzp6KBXtU_9_Jv3BYTTdvY</recordid><startdate>20160401</startdate><enddate>20160401</enddate><creator>Yu, Jialin</creator><creator>McCullough, Patrick E</creator><general>The Weed Science Society of America</general><general>Weed Science Society of America</general><general>Cambridge University Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X2</scope><scope>7XB</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>LK8</scope><scope>M0K</scope><scope>M2O</scope><scope>M7P</scope><scope>MBDVC</scope><scope>PADUT</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope></search><sort><creationdate>20160401</creationdate><title>Growth Stage Influences Mesotrione Efficacy and Fate in Two Bluegrass (Poa) Species</title><author>Yu, Jialin ; McCullough, Patrick E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-b416t-d3ca7204b91b0fc4649577e0cfc0ea16d6f75932df91762227a42728927ab6373</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Absorption</topic><topic>Annual plants</topic><topic>Herbicides</topic><topic>Hydroponics</topic><topic>Ice</topic><topic>Lawns</topic><topic>Metabolites</topic><topic>placement</topic><topic>Plant growth</topic><topic>Plant roots</topic><topic>Plants</topic><topic>Radioactive decay</topic><topic>Radioactivity</topic><topic>selectivity</topic><topic>Sorghum</topic><topic>Tillering</topic><topic>Tillers</topic><topic>translocation</topic><topic>Turf grasses</topic><topic>turfgrass</topic><topic>Turfgrasses</topic><topic>WEED MANAGEMENT—OTHER CROPS/AREAS</topic><topic>Winter</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yu, Jialin</creatorcontrib><creatorcontrib>McCullough, Patrick E</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Agricultural Science Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection (ProQuest)</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Research Library</collection><collection>Biological Science Database</collection><collection>Research Library (Corporate)</collection><collection>Research Library China</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><jtitle>Weed technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yu, Jialin</au><au>McCullough, Patrick E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Growth Stage Influences Mesotrione Efficacy and Fate in Two Bluegrass (Poa) Species</atitle><jtitle>Weed technology</jtitle><date>2016-04-01</date><risdate>2016</risdate><volume>30</volume><issue>2</issue><spage>524</spage><epage>532</epage><pages>524-532</pages><issn>0890-037X</issn><eissn>1550-2740</eissn><abstract>Mesotrione provides PRE and early POST control of annual bluegrass during Kentucky bluegrass establishment from seed, but applications do not effectively control multitiller plants. The physiological effects of growth stage on efficacy and the basis of mesotrione selectivity between species is not well understood. The objectives of this research were to evaluate mesotrione behavior in these species at three growth stages: pretiller (3 to 5 leaves), 1-tiller, and multitiller (5 to 7 tillers). In greenhouse experiments, a single mesotrione application at 280 g ai ha−1 injured pretiller, 1-tiller, and multitiller annual bluegrass 54, 33, and 11% at 4 wk after initial treatment (WAIT), respectively. A sequential application of mesotrione increased injury to pretiller and 1-tiller annual bluegrass by 20 and 17% from a single treatment, respectively. Sequential mesotrione applications caused at least 14% injury to multitiller annual bluegrass and Kentucky bluegrass at all growth stages and did not reduce tillering compared to the nontreated. Annual bluegrass absorbed 34% more root-applied 14C-mesotrione than Kentucky bluegrass in hydroponic culture, but relative differences (Bq g−1) among growth stages were not detected for both species. Averaged across growth stages, annual and Kentucky bluegrass absorbed 31 and 35% of the applied radioactivity after foliar treatments, respectively. However, averaged across species, multitiller plants metabolized approximately two times more 14C-mesotrione than pretiller and 1-tiller plants. Overall, the selectivity of mesotrione for annual bluegrass control during Kentucky bluegrass establishment results from differential levels of root absorption. Mesotrione has limited efficacy for controlling multitiller annual bluegrass due to enhanced degradation compared to pretiller and 1-tiller plants. Nomenclature Mesotrione; annual bluegrass, Poa annua L.; Kentucky bluegrass, Poa pratensis L. ‘Midnight'. Mesotrione brinda control de Poa annua en PRE y POST temprano durante el establecimiento del césped Poa pratensis a partir de semilla, pero las aplicaciones no controlan efectivamente plantas en el estadio de múltiples hijuelos. Los efectos fisiológicos del estadio de desarrollo sobre la eficacia y las bases de la selectividad de mesotrione entre especies no se conocen bien. Los objetivos de esta investigación fueron evaluar el comportamiento de mesotrione en estas especies en tres estadios de desarrollo: pre-hijuelo (3 a 5 hojas), 1-hijuelo, y múltiples hijuelos (5 a 7 hijuelos). En experimentos de invernadero, una aplicación sencilla de mesotrione a 280 g ai ha−1 dañó P. annua en el estadio de pre-hijuelo, 1-hijuelo, y múltiples hijuelos 54%, 33, y 11% a 4 semanas después del tratamiento inicial (WAIT), respectivamente. Una aplicación secuencial de mesotrione aumentó el daño a P. annua en los estadios pre-hijuelo y 1-hijuelo en 20 y 17%, en comparación con el tratamiento sencillo, respectivamente. Las aplicaciones secuenciales de mesotrione causaron al menos 14% de daño a P. annua en el estadio de múltiples hijuelos y al césped P. pratensis en todos los estadios de desarrollo, y no redujo la producción de hijuelos al compararse con el testigo sin tratamiento. P. annua absorbió 34% más 14C-mesotrione aplicado a la raíz que P. pratensis en un cultivo hidropónico, pero diferencias relativas (Bq g−1) entre los estadios de desarrollo no fueron detectadas en ninguna de las especies. Al promediar los estadios de desarrollo, P. annua y P. pratensis absorbieron 31 y 35% de la radioactividad aplicada después de los tratamientos foliares, respectivamente. Sin embargo, al promediar las especies, las plantas en el estadio de múltiples hijuelos metabolizaron aproximadamente el doble de 14C-mesotrione que las plantas en pre-hijuelos y 1-hijuelo. En general, la selectividad de mesotrione para el control de P. annua durante el establecimiento del césped P. pratensis resulta de niveles diferenciales de absorción radical. Mesotrione tiene eficacia limitada para el control de P. annua en el estadio de múltiples hijuelos producto de una mayor degradación del herbicida al compararse con plantas en los estadios de pre-hijuelo y 1-hijuelos.</abstract><cop>Lawrence</cop><pub>The Weed Science Society of America</pub><doi>10.1614/WT-D-15-00153.1</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0890-037X |
| ispartof | Weed technology, 2016-04, Vol.30 (2), p.524-532 |
| issn | 0890-037X 1550-2740 |
| language | eng |
| recordid | cdi_proquest_journals_1794522966 |
| source | JSTOR Archive Collection A-Z Listing; Cambridge University Press Journals Complete |
| subjects | Absorption Annual plants Herbicides Hydroponics Ice Lawns Metabolites placement Plant growth Plant roots Plants Radioactive decay Radioactivity selectivity Sorghum Tillering Tillers translocation Turf grasses turfgrass Turfgrasses WEED MANAGEMENT—OTHER CROPS/AREAS Winter |
| title | Growth Stage Influences Mesotrione Efficacy and Fate in Two Bluegrass (Poa) Species |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-09T14%3A24%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor_proqu&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Growth%20Stage%20Influences%20Mesotrione%20Efficacy%20and%20Fate%20in%20Two%20Bluegrass%20(Poa)%20Species&rft.jtitle=Weed%20technology&rft.au=Yu,%20Jialin&rft.date=2016-04-01&rft.volume=30&rft.issue=2&rft.spage=524&rft.epage=532&rft.pages=524-532&rft.issn=0890-037X&rft.eissn=1550-2740&rft_id=info:doi/10.1614/WT-D-15-00153.1&rft_dat=%3Cjstor_proqu%3E24856088%3C/jstor_proqu%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1794522966&rft_id=info:pmid/&rft_jstor_id=24856088&rfr_iscdi=true |