Mun kimanta magungunan fungicides don kula da cututtuka a William H. Daniel Turfgrass Research and Diagnostic Center a Jami'ar Purdue a West Lafayette, Indiana.Mun gudanar da gwaje-gwajen kore a kan raƙuman bentgrass 'Crenshaw' da 'Pennlinks' ganye.
Hoto 1: Crenshaw bentgrass maganin fungicides.An ƙaddamar da aikace-aikacen ƙarshe a kan Agusta 30 don Maxtima da Traction da Agusta 23 don Xzemplar.Kibau suna nuna lokutan aikace-aikacen kwanaki 14 (Xzemlar) da kwanaki 21 (Maxtima da Traction) don kowane maganin kashe kwayoyin cuta.
Daga Afrilu 1 zuwa Satumba 29, 2023, za mu yanke ganye biyu sau biyar a mako a inci 0.135.Mun yi amfani da 4 fl.Wakilin jika Excalibur (Aqua-Aid Solutions) akan ganyen biyu akan Yuni 9 da 28. oz/1000 sq ft. Farashin akan Yuli 20 shine 2.7 fl oz.oz/1000 sq. ft. don iyakance busassun busassun wuri.
Daga nan mun yi amfani da wakilin Fleet wetting (2.7 fl oz/1000 sq ft) zuwa ga ganye a ranar 16 ga Agusta don iyakance busassun busassun wuri.
Mun yi amfani da ruwan Tempo SC guda 9 (cyfluthrin, Envu).oz/acre da Meridian (Thiamethoxam, Syngenta) 12 fl oz.Yuni 9 oz/acre don sarrafa tururuwa.Mun yi amfani da 0.5 lb na takin nitrogen a ranar 10 ga Yuni da Satumba 2 ta amfani da Country Club MD (18-3-18, Lebanon Lawn).N/1000 murabba'in ƙafa
Makircin mu na gwaji sun kasance girman ƙafa 5 x 5 kuma an ƙirƙira su ta hanyar yin amfani da ƙayyadaddun ƙayyadaddun ƙirar toshe tare da maimaitawa huɗu.Yi amfani da injin feshi mai ƙarfi na CO2 a 50 psi da TeeJet 8008 lebur nozzles ɗin lebur guda uku daidai da galan 2/1000 murabba'in ƙafar ruwa.
A cikin duka karatun (Gwaji na 1 da Gwaji na 2), mun fara duk jiyya a ranar 17 ga Mayu, tare da lokacin gwamnatin ƙarshe ta bambanta a cikin jiyya (Table 1).A ranar 1 ga Yuli, mun yi amfani da mai ba da hannu don rarraba daidai gwargwado ta wurin dala da ta kamu da hatsin hatsi a kan adadin cc 12.5 a kowane gado.Sa'an nan kuma mu bar hatsin hatsin a saman lawn na tsawon kwanaki hudu kafin a yanka.
Mun tantance tsananin tabo dala bisa adadin cibiyoyin kamuwa da cuta a wani wuri.An ƙididdige yankin da ke ƙarƙashin ƙwayar cutar ci gaba (AUDPC) ta amfani da hanyar trapezoidal ta amfani da dabarar Σ [(yi + yi+1)/2] [ti +1 - ti], inda i = 1,2,3, ... n -1, inda yi – rating, ti – lokaci na i-th rating.An ƙaddamar da bayanai don nazarin bambance-bambance da ma'anar rabuwa (P=0.05) ta amfani da gwajin LSD mai kariya na Fisher.
Mun fara lura da bambance-bambance a cikin sarrafa tabo dala tsakanin wuraren jiyya a ranar 31 ga Mayu.A ranar 13 ga Yuni, tsananin tabo dala a cikin jiyya na aikin ya fi girma fiye da na sauran jiyya (Hoto 1).Sabanin haka, tsananin tabo na shirin $20 na Yuli 20 ya yi ƙasa da sauran jiyya.
A ranar 2 ga Agusta, an bi da wuraren da 1.3 fl na Traction (fluazimide, tebuconazole, Nupharm).oz/1000 sq. ft. – Farashin tabo na kwanaki 21 a dalar Amurka ya fi girma fiye da fakitin da aka yi wa Maxtima (fluconazole, BASF) 0.4 oz.oz/1000. ƙafafu sama da wannan lokacin.A ranar 16 da 28 ga Satumba, makonni biyu da huɗu bayan aikace-aikacen ƙarshe, bi da bi, filaye da aka yi da Traction sun fi dala tabo fiye da Maxtima kuma suna da ƙarancin ƙimar AUDPC fiye da sarrafawa.
Mun fara ganin dala a ranar 7 ga Yuli.Tun daga ranar 7 ga Yuli, duk wuraren da aka yi wa magani ba su da barkewar cutar ƙasa da ɗaya a kowane wuri.Babu bambance-bambancen magani a duk lokacin gwajin.Ƙimar AUDPC a cikin duk filayen da aka kula da su sun kasance ƙasa da ƙasa fiye da waɗanda ke cikin maƙallan sarrafawa marasa magani (Table 1).
Cibiyar Bincike da Cibiyar Bincike ta Daniel Turfgrass ta Jami'ar Purdue ta kimanta tasirin magungunan fungicides akan balagagge, tsaye mai rarrafe bentgrass.
Daga Afrilu 1 zuwa Oktoba 1, ana yanka sau uku a mako zuwa tsayin inci 0.5.Mun gabatar da Ference (cyantraniliprole, Syngenta) a ranar 30 ga Yuni a 0.37 fl.oz/1000 sq. ft. don sarrafa farin grub.A ranar 20 ga Yuli, mun yi amfani da wakili mai laushi Excalibur a adadin 2.7 fl.oz/1000 sq. ft. don iyakance busassun busassun wuri.
Mun yi amfani da Fleet moisturizing wakili (Harrell's) a kan Agusta 16th a cikin 3 fl.oz/1000 sq. ft. don iyakance busassun busassun wuri.Sannan mun yi amfani da 0.75 lbs na nitrogen a ranar 24 ga Mayu ta amfani da Shaw (24-0-22).N/1000 sq. ft. Satumba 13, 1.0 lbs.N/1000 murabba'in ƙafa
Makirci suna da girman ƙafa 5 x 5 kuma an shirya su cikin cikakkun tubalan da aka tsara tare da maimaitawa huɗu.Yi amfani da injin feshi mai ƙarfi na CO2 a 45 psi da TeeJet 8008 lebur nozzles ɗin lebur guda uku a daidai galan 1/1000 na ruwa murabba'in ƙafa.
Mun yi amfani da aikace-aikacen maganin gwari na farko a ranar 19 ga Mayu kuma na ƙarshe a ranar 18 ga Agusta.hatsin Rye da ya kamu da cutar tabo dala an yi amfani da shi daidai ta hanyar watsawa a ranar 27 ga Yuni da Yuli 1 akan ƙimar 11 cm3 da 12 cm3 a kowane wuri, bi da bi.Sa'an nan kuma mu bar hatsin hatsin a saman lawn na tsawon kwanaki hudu kafin a yanka.
An tantance tsananin cutar kowane mako biyu a duk tsawon binciken.An tantance tsananin cutar ta hanyar tantance yawan adadin yankin da abin ya shafa a kowane wuri.An ƙididdige yankin da ke ƙarƙashin ƙwayar cuta (AUDPC) ta amfani da hanyar trapezoidal da aka kwatanta a sama.An ƙaddamar da bayanai don nazarin bambance-bambance da ma'anar rabuwa (P=0.05) ta amfani da kariyar gwajin LSD na Fisher.
Mun fara lura da wuraren dala (<0.3% tsanani, 0.2 raunuka a kowane wuri) a ranar 1 ga Yuni, kuma adadin su ya karu bayan allurar rigakafi.A ranar 20 ga Yuli, an kula da wuraren da Encartis (boscalid da chlorothalonil, BASF) 3 fl.oz / 1000 sq. ft - kwanaki 14 da 4 fl oz / 1000 sq. ft. - 28 days, Daconil Ultrex (chlorothalonil, Syngenta) 2.8 fl oz / 1000 sq. ft. - 14 days, shirye-shiryen da aka bi da su suna da ƙarancin dala. fiye da duk wasu makirce-makircen da aka bi da su da kuma abubuwan da ba a kula da su ba.
Daga ranar 20 ga Yuli zuwa 15 ga Satumba, duk wuraren da aka yi wa magani ba su da ɓatanci fiye da wuraren kulawa da ba a kula da su ba.Yankunan da aka bi da Encartis (3 fl oz / 1000 sq ft - 14 days), Encartis (3.5 fl oz / 1000 sq ft - 21 days) Satumba 2, makonni biyu bayan aikace-aikacen ƙarshe (WFFA) d), Xzemplar (fluxapyroxad, BASF) 0.21 fl.oza/1000 sq. ft. – 21 days, Xzemlar (0.26 oz/1000 sq. ft. – 21 days) da shirye-shiryen da aka kula da wuraren suna da ƙarancin tabo dala.
A ranar 3 ga Agusta da 16 ga Agusta, ƙimar Encartis da ƙayyadaddun aikace-aikacen ba su da tasiri sosai kan sarrafa tabo na dalar Amurka.Duk da haka, a ranar 2 da 15 ga Satumba (WFFA 2 da 4), shafukan sun fi dacewa a yi musu magani tare da Encartis (3 fl oz/1000 sq ft - 14 days) da Encartis (3.5 fl oz/1000 sq ft)...- Kwanaki 21) yana da ƙarancin juriya ta USD fiye da Encartis (4 fl oz/1000 sq ft - 28 days).
Sabanin haka, bambance-bambance a cikin ƙimar gudanarwa da kuma lokacin jiyya na Xzemplar da Maxtima ba su da tasiri sosai kan tsananin dala a lokacin binciken.Mafi girman ƙimar aikace-aikacen Daconil Action (3 fl oz/1000 sq ft) haɗe tare da Amintaccen Action bai haifar da raguwar tabo ba.A ranar 2 ga Satumba, cibiyar kula da kamuwa da cuta ta Dollar Point ta Xzemplar ta kula da ƙananan shafuka fiye da Maxtima.
Ƙimar AUDPC na duk wuraren da ake kula da su sun yi ƙasa da na wuraren da ba a kula da su ba.Tsananin tabo dala ya kasance ƙasa da ƙasa a cikin wannan shirin a duk tsawon binciken, tare da mafi ƙarancin ƙimar AUDPC na duk jiyya.
Shafukan da aka yi amfani da su tare da Daconil Ultrex kadai suna da ƙimar AUDPC mafi girma fiye da wuraren da aka bi da su tare da duk jiyya banda waɗanda aka yi da 0.5 ml Secure (fluridinium, Syngenta).oz / 1000 sq. ft. - 21 days) Daconil Action (2 fl oz / 1000 sq ft) da Secure Action (azibendazole-S-methyl da fluazinam, Syngenta) 0.5 fl.oz / 1000 sq. ft. - 21 kwanaki Babu phytotoxicity da aka lura a ko'ina cikin binciken.
Lokacin aikawa: Afrilu-16-2024