Ọmụmụ ihe a tụlere mmetụta ogologo oge nke ABW atọọgwụ ahụhụmmemme na njikwa bluegrass kwa afọ yana ịdị mma turfgrass mara mma, ma naanị ya yana yana njikọta yana dị iche ichepaclobutrasolmmemme na njikwa bentgrass na-akpụ akpụ. Anyị chere na itinye ọgwụ ụmụ ahụhụ dị larịị iji chịkwaa ABW ka oge na-aga ga-ebelata mkpuchi bluegrass kwa afọ n'okporo ụzọ bentgrass na-akpụ akpụ yana ngwa paclobutrasol kwa ọnwa ga-abawanye njikwa.
Ka oge na-aga, a na-eme nyocha abụọ n'ọhịa ma megharịa ya. Nnwale 1 bụ nnwale afọ abụọ emere site na 2017 ruo 2019 na saịtị abụọ nwere akụkọ ABW. Ọmụmụ ihe a nyochara mmemme atọ nke ụmụ ahụhụ, njikwa bentgrass na-akpụ akpụ, na ngwa ngwa nke paclobutrasol (Trimmit 2SC, Syngenta) kwa ọnwa na 0.25 lb ingredient ingredient per acre (16 fl oz ngwaahịa kwa acre; 280 g ai kwa hectare) sitere na mkpụrụ osisi bluegrass kwa afọ. . Ghichaa tupu Ọktọba maka njikwa bluegrass kwa afọ.
Emere nyocha na 2017 na 2018 na golf simulated na Loggershot 2 Farm (North Brunswick, NJ) na mkpuchi mkpuchi bluegrass kwa afọ nke 85% na mmalite nke nnwale ahụ. Emeghachiri nnwale ahụ na 2018 na 2019 na nkuzi golf na Forest Hills Course Club (Bloomfield Hills, NJ), ebe a na-enyocha ihe mkpuchi anya na 15% na-akpụ akpụ bentgrass na 10% ọka wit na-agba agba (Lolium perenne L.). N'ime nnwale ahụ, 75% bụ Poa annua.
Ọgwụgwọ mkpụrụ ahụ gụnyere ịkụ ihe na-akpụ akpụ bentgrass 007 n'ọnụego 1 paụnd nke mkpụrụ ndụ dị ọcha kwa 1,000 square (kilogram 50 kwa hectare) otu izu ka mmalite nke mmemme ọnụ ụzọ pesticide (lee nkọwa mmemme pesticide n'okpuru). A na-emeghachi ọgwụgwọ ugboro anọ ma hazie ya dị ka ihe 2 × 3 × 2 n'ime ihe mgbochi zuru oke nke nwere atụmatụ nkewa. Ịgha mkpụrụ dị ka saịtị zuru oke, mmemme ụmụ ahụhụ dị ka subplot, paclobutrasol dị ka subplot, 3 x 6 ft (0.9 mx 1.8 m).
Emebere usoro mgbochi a iji gbochie mmebi nke bluegrass nke na-eme kwa afọ n'oge oge. Ọ mejupụtara cyantraniliprole systemic pesecticide (Ference, Syngenta) etinyere na dose nke ihe dịka 200 GDD50 (80 GDD10) n'oge oge okooko osisi dogwood (Cornus florida L.) iji chịkwaa mmalite oge opupu ihe ubi ABW larvae tupu iji indoxacarb (Provaunt) . etinyere na ihe dịka 350 GDD50 (160 GDD10) mgbe ngwakọ Catawbiense Michx nọ na ifuru iji chịkwaa ọgbọ ọgbọ mmiri ọ bụla dị ndụ, yana Spinosad (Conserve, Dow AgroSciences) ejiri chịkwaa larvae ọgbọ mbụ n'oge ọkọchị.
Mmemme oke na-akwụsịtụ iji ọgwụ ahụhụ iji chịkwaa ABW ruo mgbe ịdị mma turf na mpaghara a na-agwọbeghị ruru ogo nbibi.
Iji chọpụta nke ọma ihe mejupụtara ụdị ahịhịa ahịhịa, grid abụọ dị 36 x 36 n'ime (91 x 91 cm) nwere oghere 100 dabara adaba na-etinye n'ime ebe ọ bụla. Chọpụta ụdịdị ndị dị na nkwụsịtụ n'etiti June na Ọktoba. A na-enyocha ihe mkpuchi bluegrass kwa afọ kwa ọnwa n'oge oge na-eto eto kwa afọ site na 0% (enweghị mkpuchi) ruo 100% (nkpuchi zuru ezu). A na-enyocha ịdị mma ahịhịa ahịhịa n'ọ̀tụ̀tụ̀ 1 ruo 9, ebe 6 weere dị ka ihe a na-anabata. Iji nyochaa ịdị irè nke mmemme ọgwụ ahụhụ ABW, a na-enyocha njupụta larval site na iji mmịpụta nnu na mbido June tupu ndị okenye ọhụrụ amalite ịpụta.
Edebere data niile na nyocha nke iche site na iji usoro GLIMMIX na SAS (v9.4, SAS Institute) na-enwe mmetụta na-enweghị usoro. A tụlere nnwale nke mbụ site na iji atụmatụ nkewa nkewa, ma nyochara nnwale nke abụọ site na iji nhazi 2 × 4 factorial gbawara agbawa. Mgbe ọ dị mkpa, a na-eji ule LSD echedoro nke Fisher iji kewapụta ụzọ (p=0.05). A tụlere saịtị iche iche n'ihi na mmekọrịta ha na saịtị mere na ụbọchị dị iche iche yana njirimara saịtị dị iche iche.
ABW nwere ike were were belata mkpuchi bluegrass kwa afọ na bentgrass na-akpụ akpụ, mana naanị ma ọ bụrụ na anabata nnukwu mmebi nke bluegrass kwa afọ. N'ime nnwale ndị a, mmebi nke ABW na-ebelata ogo turf n'ozuzu ya ruo nwa oge na ọkwa ụfọdụ ndị gọọmenti weere na ọ dịghị anabata. Nke a nwere ike ịbụ n'ihi na ọtụtụ (60-80%) nke turfgrass bụ bluegrass kwa afọ. A hụbeghị mmebi nke bentgrass ABW na-akpụ akpụ site na iji usoro ọnụ ụzọ. Anyị na-eche na ka usoro ihe ọkụkụ ABW dabere na ọnụ ụzọ iji chịkwaa bluegrass kwa afọ na-enweghị mmemme PGR, anyị na-eche na mkpuchi mkpuchi bluegrass mbụ kwa afọ ga-adị mkpa ka ọ dị ala iji kwe ka ABW mebie nnukwu mmebi kwa afọ na bluegrass na-enweghị emetụta àgwà izugbe. ahịhịa. Ọ bụrụ na a na-ahapụ naanị obere mmebi tupu ịgbasa ọgwụ ụmụ ahụhụ, nsonaazụ ndị a na-egosi na njikwa bluegrass kwa afọ ga-adịte aka.
Usoro mgbochi ụmụ ahụhụ na-akacha mma ma dị irè mgbe ejikọtara ya na mmemme nlekọta uto osisi. Anyị na-eji paclobutrasol na ọmụmụ ihe a, mana fluoropyrimidine nwere ike ịmepụta nsonaazụ yiri ya. Ọ bụrụ na ejiri atụmatụ ABW dabere n'ọnụ ụzọ na-enweghị atụmatụ PGR, mbelata bluegrass kwa afọ nwere ike ọ gaghị agbanwe agbanwe ma ọ bụ dị ịrịba ama n'ihi na bluegrass kwa afọ nwere ike ịgbake ngwa ngwa site na mmebi na mbubreyo mmiri. Usoro kachasị mma bụ ịmalite ngwa ngwa paclobutrasol kwa ọnwa n'oge opupu ihe ubi mgbe isi mkpụrụ ahụ gbawara, hapụ ABW mebie ya ruo mgbe a pụghị ịnabata ya (ndị njikwa ma ọ bụ ndị ọzọ), wee tinye larvicides na akara akara kachasị elu iji chịkwaa ABW. . Atụmatụ na-ejikọta atụmatụ abụọ a na-enye njikwa bluegrass dị irè karị kwa afọ karịa atụmatụ ọ bụla ma na-enye ogige egwuregwu dị elu maka mmadụ niile ma otu izu ma ọ bụ abụọ nke oge na-eto eto.
Oge nzipu: Ọktoba 25-2024