Anyị tụlere ọgwụgwọ fungicides maka njikwa ọrịa na William H. Daniel Turfgrass Research and Diagnostic Center na Mahadum Purdue na West Lafayette, Indiana.Anyị mere ule akwụkwọ ndụ akwụkwọ ndụ na-akpụ akpụ bentgrass 'Crenshaw' na 'Pennlinks' elu.
Onyonyo 1: Crenshaw bentgrass ọgwụgwọ fungicides.Edebere ngwa ikpeazụ na August 30 maka Maxtima na Traction na August 23 maka Xzemplar.Àkú ndị a na-egosi oge ntinye nke ụbọchị 14 (Xzemlar) na ụbọchị 21 (Maxtima na traction) maka ọgwụ nje ọ bụla.
Site na Eprel 1 ruo Septemba 29, 2023, anyị ga-egbutu elu abụọ ahụ ugboro ise n'izu na sentimita 0.135.Anyị na-eji 4 fl.Onye nnọchi anya Wetting Excalibur (Aqua-Aid Solutions) na elu abụọ na June 9 na 28. oz/1000 sq. ft. ọnụahịa na Julaị 20 bụ 2.7 fl oz.oz/1000 sq. ft. iji kpachie ntụpọ akọrọ na mpaghara.
Anyị tinyeziri Fleet wetting agent (2.7 fl oz/1000 sq ft) na elu elu n'August 16th iji kpachie ntụpọ akọrọ.
Anyị ji mmiri mmiri Tempo SC 9 (cyfluthrin, Envu).oz/acre na Meridian (Thiamethoxam, Syngenta) 12 fl oz.June 9 oz/acre maka njikwa ndanda.Anyị tinye 0.5 lb nke fatịlaịza nitrogen na June 10 na Septemba 2 site na iji Country Club MD (18-3-18, Lebanon Lawn).N/1000 square ụkwụ
Ntụle nnwale anyị bụ 5 x 5 n'ogo ma bụrụ nke e mere ya site na iji nhazi ngọngọ zuru oke nwere ntụgharị anọ.Jiri ihe sprayer nwere CO2 na 50 psi na atọ TeeJet 8008 flat spray nozzles na nha nke galọn abụọ/1000 square ụkwụ mmiri.
N'ime ọmụmụ abụọ ahụ (Nnwale 1 na Nnwale 2), anyị malitere ọgwụgwọ niile na May 17, na oge nke nchịkwa ikpeazụ dịgasị iche iche n'ofe ọgwụgwọ (Table 1).Na Julaị 1, anyị na-eji ihe mgbasa ozi na-ekesa ntụpọ dollar riri ọka rye n'ogo nke 12.5 cc kwa akwa.Anyị na-ahapụ ọka rye n'elu ahịhịa maka ụbọchị anọ tupu ịchachaa.
Anyị tụlere ịdị njọ nke ntụpọ dollar dabere na ọnụọgụ ebe ọrịa na saịtị.A na-agbakọ mpaghara n'okpuru usoro ọganihu ọrịa (AUDPC) site na iji usoro trapezoidal site na iji usoro Σ [(yi + yi+1)/2] [ti+1 - ti], ebe i = 1,2,3, ... n -1, ebe yi – rating, ti – oge nke i-th rating.Edebere data na nyocha nke ọdịiche yana pụtara nkewa (P=0.05) site na iji ule LSD echedoro Fisher.
Anyị buru ụzọ hụ ọdịiche dị na njikwa ntụpọ dollar n'etiti saịtị ọgwụgwọ na Mee 31st.Na June 13, ntụpọ ntụpọ dollar na ọgwụgwọ ọrụ ahụ dị elu nke ukwuu karịa na ọgwụgwọ ndị ọzọ (Foto 1).N'aka nke ọzọ, ntụpọ ntụpọ nke mmemme $20 Julaị 20 dị ala karịa ọgwụgwọ ndị ọzọ.
N'August 2, a na-emeso mpaghara ahụ na 1.3 fl nke Traction (fluazimide, tebuconazole, Nupharm).oz/1000 sq. ft. – Ọnụahịa ntụpọ ụbọchị iri abụọ na otu na dollar US dị elu nke ukwuu karịa maka ngwugwu a na-emeso Maxtima (fluconazole, BASF) 0.4 oz.oz/1000 sq. ụkwụ n'otu oge ahụ.Na Septemba 16 na 28, izu abụọ na anọ ka emechara ngwa ikpeazụ, n'otu n'otu, atụmatụ ejiri Traction mesoo nwere nnukwu ntụpọ dollar karịa Maxtima ma nwee ụkpụrụ AUDPC dị ala karịa njikwa.
Anyị buru ụzọ hụ ntụpọ dollar na 7 Julaị.Ruo Julaị 7, saịtị niile a na-agwọ nwere ihe na-erughị otu ntiwapụ n'otu saịtị.Enweghị ọdịiche ọgwụgwọ ọ bụla n'ime nnwale ahụ niile.Ụkpụrụ AUDPC n'ime atụmatụ niile a na-emeso dị obere karịa ndị nọ na nhazi njikwa na-adịghị edozi (Table 1).
Mahadum Purdue's Daniel Turfgrass Research and Diagnostic Center tụlere ịdị irè nke ọgwụgwọ fungicides na tozuru okè, na-akpụ akpụ bentgrass n'efu.
Site na Eprel 1 ruo Ọktoba 1, na-egbutu ugboro atọ n'izu ruo n'ịdị elu nke 0,5 inch.Anyị webatara Ference (cyantraniliprole, Syngenta) na June 30 na 0.37 fl.oz/1000 sq. ft. maka njikwa grub ọcha.Na Julaị 20, anyị na-eji ihe na-eme ka mmiri dị na Excalibur mee ihe n'ihe dị ka 2.7 fl.oz/1000 sq. ft. iji kpachie ntụpọ akọrọ na mpaghara.
Anyị ji Fleet moisturize agent (Harrell's) na Ọgọst 16 n'ime 3 fl.oz/1000 sq. ft. iji kpachie ntụpọ akọrọ na mpaghara.Anyị tinyeziri 0.75 lbs nke nitrogen na Mee 24 iji Shaw (24-0-22).N/1000 sq. ft. Sep 13, 1.0 lbs.N/1000 square ụkwụ
Atụmatụ dị 5 x 5 ụkwụ n'ogo ma hazie ya na blọk zuru oke nwere ihe ngbanwe anọ.Jiri ihe sprayer nwere CO2 na 45 psi na atọ TeeJet 8008 flat spray nozzles na nha 1 galọn/1000 square ụkwụ mmiri.
Anyị tinyere ngwa mbụ fungicides na Mee 19th na nke ikpeazụ na August 18th.A na-etinye ọka rye nke nwere ntụpọ ntụpọ dollar ahụ n'otu n'otu site na mgbasa ozi na June 27 na Julaị 1 n'ogo 11 cm3 na 12 cm3 kwa ibé, n'otu n'otu.Anyị na-ahapụ ọka rye n'elu ahịhịa maka ụbọchị anọ tupu ịchachaa.
A na-enyocha oke ọrịa kwa izu abụọ n'ime ọmụmụ ihe ahụ.A na-enyocha oke ọrịa site na iji anya na-enyocha pasent nke mpaghara ọ metụtara na saịtị ọ bụla.A na-agbakọ mpaghara dị n'okpuru usoro nrụgide ọrịa (AUDPC) site na iji usoro trapezoidal akọwara n'elu.Edebere data na nyocha nke ọdịiche yana pụtara nkewa (P=0.05) site na iji ule LSD echedoro Fisher.
Anyị buru ụzọ hụ ntụpọ dollar (<0.3% ịdị njọ, ọnya 0.2 butere n'otu saịtị) na June 1, ọnụ ọgụgụ ha mụbara na-esochi inoculation.Na Julaị 20, ejiri Encartis (boscalid na chlorothalonil, BASF) gwọọ mpaghara ahụ 3 fl.oz / 1000 sq. ft - 14 ụbọchị na 4 fl oz / 1000 sq. ft. - 28 ụbọchị, Daconil Ultrex (chlorothalonil, Syngenta) 2.8 fl oz / 1000 sq. ft. - 14 ụbọchị, atụmatụ emeso atụmatụ nwere obere dollar ntụpọ. karịa atụmatụ ndị ọzọ niile a na-emeso na njikwa enweghị ọgwụgwọ.
Site na Julaị 20 ruo Septemba 15, ogbunigwe niile a na-emeso nwere obere nrịanrịa karịa atụmatụ njikwa enweghị ọgwụgwọ.Ebe a na-emeso ya na Encartis (3 fl oz / 1000 sq ft - ụbọchị 14), Encartis (3.5 fl oz / 1000 sq ft - 21 ụbọchị) Septemba 2, izu abụọ mgbe ngwa ikpeazụ (WFFA) d), Xzemplar (fluxapyroxad, BASF) 0.21 fl.ounce/1000 sq. ft. – ụbọchị iri abụọ na otu, Xzemlar (0.26 oz/1000 sq. ft. – 21 days) na saịtị a na-emeso mmemme nwere oke ntụpọ dollar kacha nta.
N'August 3 na Ọgọst 16, ọnụego Encartis na njedebe ngwa enweghị mmetụta dị ukwuu na njikwa ntụpọ dollar US.Agbanyeghị, na Septemba 2 na 15 (WFFA 2 na 4), enwere ike ịgwọ saịtị na Encartis (3 fl oz/1000 sq ft – ụbọchị 14) na Encartis (3.5 fl oz/1000 sq ft)...- ụbọchị 21) nwere nguzogide ntụpọ USD dị ala karịa Encartis (4 fl oz/1000 sq ft - ụbọchị 28).
N'ụzọ dị iche, ọdịiche dị na ọnụọgụ nchịkwa na oge ọgwụgwọ Xzemplar na Maxtima emetụtaghị oke ntụpọ dollar n'oge oge ọmụmụ.Ọnụego ngwa dị elu nke Daconil Action (3 fl oz/1000 sq ft) agwakọta ya na Secure Action ebuteghị mbelata na ntụpọ dollar.Na Septemba 2, Xzemplar's Dollar Point Control Center gwọkwara saịtị ole na ole karịa Maxtima.
Ụkpụrụ AUDPC nke saịtị niile a na-emeso dị obere karịa nke saịtị nchịkwa na-adịghị edozi.Ogo ntụpọ dollar na-agbadata mgbe niile na atụmatụ a na mmemme a n'oge ọmụmụ ihe niile, yana ụkpụrụ AUDPC kachasị ala nke ọgwụgwọ niile.
Saịtị a na-emeso ya na Daconil Ultrex naanị nwere ụkpụrụ AUDPC dị elu karịa saịtị a na-emeso ya na ọgwụgwọ niile ma ewezuga ndị ejiri 0.5 ml Secure (fluridinium, Syngenta).oz / 1000 sq. ft. - 21 ụbọchị) Daconil Action (2 fl oz / 1000 sq ft) na Secure Action (azibendazole-S-methyl na fluazinam, Syngenta) 0.5 fl.oz / 1000 sq. ft. - 21 ụbọchị Ọ dịghị phytotoxicity a hụrụ n'oge ọmụmụ.
Oge nzipu: Eprel 16-2024