硝磺草酮的除草活性及对草坪的安全性

农药AGROCHEMICALSVol.49,No.8Aug.2010硝磺草酮的除草活性及对草坪的安全性史伟1，李香菊1，耿贺利2，李峰2(1.1001932.()200120)摘要：40%SC3640%SC40%SC40%SC120~960ga.i./hm2关键词：中图分类号：S482.3文献标志码：A文章编号：1006-0413(2010)08-0615-03WeedControlEfficacyandTurfgrassSafetyofMesotrioneSHIWei1,LIXiang-ju1,GENGHe-li2,LIFeng2(1.PlantProtectionInstitute,CAAS,Beijing100193,China;2.Syngenta(China)InvestmentCo.,Ltd.,Shanghai200120,China)Abstract:Greenhousestudieswereconductedtoevaluateweedcontrolefficacyandturfgrasssafetyofmesotrioneappliedpostemergence.TheresultofexperimentsshowedthatmesotrionehadexcellenteffectonAmaranthusretroflexuswithChenopodiumalbumfollowedandDigitariasanguinaliswasrelativelytheinsensitiveoneamong3weedspecies.“Minimumdoserequirementforasatisfactoryefficacy”(ED90)ofmesotrioneincreasedastheincresingofweedleaf-stages.Mesotrioneappliedat120-960ga.i./hadidnotinhibitthebiomassofturfgrassintheexperimentsexceptAgrostismatsumurae,butcausedleafblanchingofZoysiajaponica,Festucaarundinacea,Loliumperenne,CynodondactylonandAgrostismatsumurae,whichmayaffecttheornamentalquality.Keywords:mesotrione;weedcontrolefficacy;turfgrass;safety40%SC200040%SC(HPPD)40%SC3~5d40%SC[1]40%SC[2-4]40%SC[5][6-7]242,43640%SC40%SC1材料与方法1.1供试药剂40%SC()1.2试验方法1.2.140%硝磺草酮SC除草活性试验AmaranthusretroflexusChenopodiumalbumDigitariasanguinalis(90%)450g12cm30%(255)5/135740%SC5(1)415d(%)=10040%SC90%(ED90)40%收稿日期：20100301修返日期：20100419作者简介：(1984)[e-mail]通讯作者：[e-mail]应用技术616农药AGROCHEMICALSSC3表140%硝磺草酮SC在杂草不同叶龄下的施药剂量/(ga.i.·hm2)115304560757.5304560753060901201503154560759015309012015060901201501805153090120150156013516519530901201802257751051351651951351651952252551051501952403301.2.2草坪安全性试验FestucaarundinaceaLoliumperennePoaannuaCynodondactylonZoysiajaponicaAgrostismatsumurae180g6cm30%(205)40d9cm120240480720960ga.i./hm2440d(%)=1001.2.3施药器械ASS3412.5L/hm21.3统计分析SPSS(Duncan's)(P=0.05)EXCEL2结果与分析2.140%硝磺草酮SC的除草活性2.1.140%硝磺草酮SC对不同杂草的除草活性差异40%SC3~5d7d40%SC3ED9099.8125.7253.5ga.i./hm2340%SC2.1.2杂草不同时期对40%硝磺草酮SC的敏感性差异40%SC240%SC340%SC表240%硝磺草酮SC剂量杂草鲜重抑制率关系方程及ED90值(y=)(r2)ED90/(ga.i.·hm2)173.86+0.354x0.932245.6317.03+0.732x0.993799.8552.32+0.323x0.9075116.7738.13+0.251x0.9482206.4118.36+1.010x0.980171.038.33+0.649x0.9427125.7526.88+0.360x0.9355175.7767.21+0.096x0.9970238.4139.35+0.288x0.9951175.8312.56+0.405x0.9899253.553.00+0.344x0.9700252.6714.79+0.256x0.9748409.52.240%硝磺草酮SC对草坪的安全性2.2.140%硝磺草酮SC对草坪生物量的影响40%SC40d40%SC120~960ga.i./hm240%SC120ga.i./hm216.7%(P=0.05)40%SC(3)表3不同草坪喷施40%硝磺草酮SC后40d的鲜重/(ga.i.·hm2)/g/g/g/g/g/g06.190.29b6.100.59a2.670.47a3.930.65a2.781.25a3.890.20a1206.760.84b5.460.52a3.140.50a3.720.52a2.300.94a3.240.20b2408.281.09a6.000.82a2.910.64a3.500.26a2.711.57a2.130.44c4806.120.26b5.430.61a2.880.75a4.090.29a1.890.55a2.940.59b7205.890.78b4.810.35a3.500.85a3.620.62a2.591.22a2.860.30b9606.211.09b6.161.66a3.070.45a3.730.49a2.361.03a1.890.28cP=0.052.2.240%硝磺草酮SC对不同草坪观赏品质的影响40%SC5~7d40d4617480240960120240ga.i./hm2表4不同草坪喷施40%硝磺草酮SC后40d白化率/(ga.i.·hm2)00a0a0a0a0a0a1201.4a1.8ab0a0a16.8b1.6a2400.8a3.3bc0a0.5a15.4b9.8b48014.8b9.9cd0a0a70.8cd13.8b72025.3b16.8d0a0a53.6c24.5b96053.4c6.7c0a9.2b88.7d83.8cP=0.053结论与讨论40%SC45.6~206.4ga.i./hm240%SC7Hugie[8]Pannacci[9]ED9071.0~238.4ga.i./hm240%SC7Pannacci[9]ED90175.8~409.5ga.i./hm240%SC7Jones[10]40%SC40%SC[11]40%SC0~960ga.i./hm2Jones[4,10]40%SC0~720ga.i./hm2960ga.i./hm29.2%Willis[12]280.1ga.i./hm212%~18%Willis40%SC0~240ga.i./hm2240ga.i./hm2Reicher[13]120ga.i./hm2240ga.i./hm23.3%Mccurdy[14]Taylor[15]Huckabay[16]Jones[10]40%SC480ga.i./hm2790%40%SC240ga.i./hm2790%40%SC参考文献：[1]MITCHELLG,BARTLETTDW,FRASERTEM,etal.Mesotrione:aNewSelectiveHerbicideforUseinMaize[J].PestManagScience,2001,57:120-128.[2]BEAMJB,BARKERWL,ASKEWSD.SelectiveCreepingBentgrass(Agrostisstolonifera)ControlinCool-seasonTurfgrass[J].WeedTechnology,2006,20:340-344.[3]MCCURDYJD,MCELROYJC,BREEDENGK,etal.MesotrioneplusProdiamineforSmoothCrabgrass(Digitariaischaemum)ControlinEstablishedBermudagrassTurf[J].WeedTechnology,2008,22:275-279.[4]JONESMA,CHRISTIANSNE.MesotrioneControlsCreepingBentgrass(Agrostisstolonifera)inKentuckyBluegrass[J].WeedTechnology,2007,21:402-405.[5],,.[M].:,1999.[6],,.[J].,1996(6):54-57.[7],,.[J].,1999(2):38-40.[8]HUGIEJA,BOLLEROGA,TRANELP.DefiningtheRateRequirementsforSynergismbetweenMesotrioneandAtrazineinRedrootPigweed(Amaranthusretroflexus)[J].WeedScience,2008,569:265-270.[9]PANNACCIE,COVARELLIG.EfficacyofMesotrioneUsedatReducedDosesforPost-emergenceWeedControlinMaize(ZeamaysL.)[J].CropProtection,2009,28:57-61.[10]JONESMA,CHRISTIANSNE.Mesotrione:EvaluateFertilizerGranuleFormulationsforPostCrabgrassControl:2006IowaStateTurfgrassResearchReport[R].Iowa:IowaStateUnivercity,2006.[11],,,.[J]..2007,28(5):29-33.[12]WILLISJB,ASKEWSD,MCELROYJC.ImprovedWhiteCloverControlwithMesotrionebyTank-mixingBromoxynil,Carfentrazone,andSimazine[J].WeedTechnology,2007,21:739-743.[13]REICHERZ,WEISENBERGERD.Mesotrione4SCSafetytoTurf-typeTallFescuewhenAppliedtoSeedingandNewlyEmergedTurf:2006AnnualReport[R].WestLafayette:PurdueUniversityTurfgrassScienceProgram,2006.[14