Ichi chidzidzo chakaongorora mhedzisiro yenguva refu yevatatu ABWmushonga wezvipembenenezvirongwa zvepagore bluegrass control uye fairway turfgrass mhando, zvese zviri zvega uye zvakasanganiswa zvakasiyanapaclobutrazolzvirongwa uye zvinokambaira bentgrass control. Isu takafungidzira kuti kushandisa mishonga yekuuraya zvipembenene pachikumbaridzo kudzora ABW nekufamba kwenguva kunoderedza kuvharwa kwepagore kwebluegrass muzvinokambaira bentgrass fairways uye kuti kushandiswa kwemwedzi nemwedzi kwepaclobutrazol kuchawedzera kudzora.
Nokufamba kwenguva, maedzo maviri emumunda akaitwa uye akadzokororwa. Kuedza 1 yaive yemakore maviri kuyedza munda yakaitwa kubva 2017 kusvika 2019 panzvimbo mbiri dzine nhoroondo yeABW. Chidzidzo ichi chakaongorora zvirongwa zvitatu zvemishonga yezvipembenene, zvinokambaira bentgrass manejimendi, uye kushandiswa kwemwedzi nemwedzi kwepaclobutrazol (Trimmit 2SC, Syngenta) pa 0.25 lb active ingredient paeka (16 fl oz product per acre; 280 g ai per hectare) kubva kumbeu yebluegrass yegore. . Pwanya pamberi paOctober yegore negore bluegrass control.
Tsvagiridzo yakaitwa muna 2017 na 2018 pane yakateedzerwa gorofu paLoggershot 2 Farm (North Brunswick, NJ) ine chivharo chegore negore chebluegrass che85% pakutanga kwekuyedza. Chiyedzo ichi chakadzokororwa muna 2018 na 2019 pamakosi egorofu kuForest Hills Course Club (Bloomfield Hills, NJ), uko chivharo chekuona chakaongororwa pa15% inokambaira bentgrass uye 10% perennial gorosi dema (Lolium perenne L.). Mukuedza, 75% yaiva Poa annua.
Mushonga wembeu waisanganisira kudyara zvinokambaira bentgrass 007 pamwero wepaundi 1 yembeu mhenyu yakachena pa1,000 square feet (50 kilograms per hectare) svondo rimwe chete mushure mekutanga kwechirongwa chemishonga yezvipembenene (ona nezvechirongwa chemishonga yezvipembenene pazasi). Mishonga yakadzokororwa kane uye yakarongwa se2 × 3 × 2 factorial mune randomized yakazara block ine kupatsanurwa zvirongwa. Kudyara seyero yesaiti yakazara, chirongwa chezvipembenene se subplot, paclobutrazol se subplot, 3 x 6 ft (0.9 mx 1.8 m).
Ichi chirongwa chekudzivirira chakagadzirirwa kudzivirira kukanganisa kwebluegrass kunoitika gore rega rega mumwaka. Inosanganisira systemic insecticide cyantraniliprole (Ference, Syngenta) inoiswa padosi inosvika mazana maviri GDD50 (80 GDD10) panguva yekupedzisira maruva e dogwood (Cornus florida L.) kudzora chizvarwa chekutanga chechirimo ABW magonye asati ashandisa indoxacarb (Provaunt) . yakashandiswa panosvika 350 GDD50 (160 GDD10) apo Catawbiense Michx yakasanganiswa yakanga iri muruva kuti idzore magonye echizvarwa chechirimo, uye Spinosad (Conserve, Dow AgroSciences) yakashandiswa kudzora makonye echizvarwa chekutanga muchirimo.
Zvirongwa zveThreshold zvinomisa kushandiswa kwezvipembenene kudzora ABW kudzamara turf hunhu munzvimbo dzisina kurapwa hwasvika padanho rekudzikira.
Kuti uone kuumbwa kwemhando dzeturfgrass, maviri 36 x 36 mu (91 x 91 cm) masikweya grid ane zana akaenzana akaparadzana nzvimbo dzakaiswa munzvimbo yega yega. Ziva mhando dziripo pamharadzano imwe neimwe pakati paChikumi naGumiguru. Chivharo chegore negore chebluegrass chaiongororwa mwedzi nemwedzi mukati memwaka wekukura wepagore pachiyero kubva pa0% (hapana chivharo) kusvika ku100% (chivharo chizere). Hunhu hwehuswa hwehuswa hunoongororwa zvinoonekwa pachiyero che1 kusvika 9, uye 6 ichionekwa seyakagamuchirwa. Kuti uongorore kushanda kwechirongwa cheABW chezvipembenene, mashizha emhute akaongororwa achishandisa munyu mukutanga kwaJune vanhu vakuru vatsva vasati vatanga kubuda.
Yese data yakaiswa pasi pekuongororwa kwekusiyana uchishandisa nzira yeGLMMIX muSAS (v9.4, SAS Institute) ine zvimiro-zvinoitika kudzokorora. Kuedza kwekutanga kwakaongororwa pachishandiswa kupatsanurwa-puratifomu, uye kuyedza kwechipiri kwakaongororwa uchishandisa randomized 2 × 4 factorial split-plot design. Pazvinenge zvakakodzera, Fisher's Yakachengetedzwa LSD bvunzo yakashandiswa kupatsanura nzira (p=0.05). Masayiti akaongororwa akaparadzana nekuti kudyidzana nemasaiti kwakaitika pamazuva akasiyana uye hunhu hwesaiti hwakasiyana.
ABW inogona kusarudza kuderedza gore negore chifukidziro chebluegrass mune zvinokambaira bentgrass, asi chete kana kukuvara kwakanyanya kune gore negore bluegrass kuchibvumidzwa. Muzviedzo izvi, huwandu hweturf hwakangoderedzwa nechinguvana neABW kukuvadzwa kusvika kumatanho anoonekwa seasingagamuchirwe nevamwe vatambi vegorofu. Izvi zvinogona kunge zvichikonzerwa nekuti ruzhinji (60-80%) rweturfgrass ndeyegore negore bluegrass. Kukuvadzwa kwezvinokambaira bentgrass ABW hakuna kumboonekwa uchishandisa nzira yechikumbaridzo. Isu tinofungidzira kuti kuitira pachikumbaridzo-based ABW chirongwa chezvipembenene kuti chinyatso kudzora gore negore bluegrass pasina chirongwa chePGR, tinofungidzira kuti kutanga kwegore negore kuvharwa kwebluegrass kunoda kuderera kuti ABW iite kukuvadza kwegore negore kubluegrass pasina kukanganisa hutano huzhinji. uswa. Kana kukuvadzwa kudiki chete kuchibvumidzwa pamberi pekupfapfaidza zvipembenene, mhedzisiro iyi inoratidza kuti yenguva refu yegore negore bluegrass control ichave isina basa.
Matanho emishonga yezvipembenene eThreshold anonyanya kushanda uye anoshanda kana asanganiswa nemapurogiramu ekugadzirisa kukura kwezvirimwa. Takashandisa paclobutrazol muchidzidzo ichi, asi fluoropyrimidine inogona kuunza migumisiro yakafanana. Kana chikumbaridzo-chakavakirwa ABW chirongwa chikashandiswa pasina chirongwa chePGR, gore negore bluegrass kudzvinyirirwa kunogona kusaenderana kana kukosha nekuti gore negore bluegrass inogona kukurumidza kupora kubva mukukuvadzwa mukupera kwechirimo. Zano rakanakisa nderekutanga mwedzi nemwedzi kushandiswa kwepaclobutrazol muchirimo mushure mekunge misoro yembeu yaputika, rega ABW iite kukuvara kusvika isingachabvumirwe (mamaneja kana vamwe), uye wozoisa larvicides pahuwandu hwema label doses kudzora ABW. . Urongwa hunobatanidza mazano maviri aya hunopa hunobudirira hwepagore bluegrass kutonga kupfuura chero nzira yega uye inopa nhandare dzepamusoro-soro kune vose kunze kwevhiki imwe kusvika maviri yemwaka wekukura.
Nguva yekutumira: Oct-25-2024