Isithombe: I-Powdery Mildew ku-Black-Eyed Susan Amaqabunga
Kushicilelwe: Okthoba 30, 2025 14:29:44 UTC
Isithombe esisondele kakhulu esinokulungiswa okuphezulu esibonisa isikhutha emaqabunga e-Black-Eyed Susan, esinamagqabhagqabha okukhunta amhlophe eqabungeni eliluhlaza elinezimbali eziphuzi ngokugqamile ekukhanyeni kwemvelo kwasehlobo.
Powdery Mildew on Black-Eyed Susan Leaves
Lesi sithombe esinokulungiswa okuphezulu, sefomethi yokwakheka kwezwe sibonisa ukubuka eduze kwamahlamvu ka-Black-Eyed Susan (Rudbeckia hirta) abonisa izimpawu ze-powdery mildew, isifo sokukhunta esivamile esithinta izitshalo zasengadini. Sithwetshulwe ngaphansi kokukhanya kwemvelo okuthambile, isithombe silinganisa ukunemba kwesayensi nokucaca kobuhle, esibonisa umehluko phakathi kwamaqabunga aluhlaza esitshalo anempilo kanye nokuphaphathekile, okuyimpuphu okufana nokutheleleka. Ukwakheka kunikeza kokubili umongo nemininingwane: amaqabunga amaningana agcwalisa uhlaka ngezendlalelo ezidlulanayo, ngokukhula kwesikhunta esimhlophe kubonakala ngokucacile ezindaweni zazo zonke, kuyilapho izimbali ezisagolide ezijwayelekile ze-Black-Eyed Susan zilunguza emaphethelweni aphansi esithombe, zengeza ukuthinta kombala namandla.
Maphakathi nesithombe, iqabunga elilodwa elikhulu ligxile kakhulu, libonisa ukusabalala komkhuhlane oyimpuphu. Isikhunta sibonakala sinamabala angavamile, amhlophe ngokumpunga agxile emithanjeni nase-midrib, ancipha kancane kancane abheke emaphethelweni. Ukuthungwa kwesikhutha kuthambile kancane, neziqephu ngazinye zihlangana zibe ifilimu elincanyana elenza buthuntu ubucwebe bemvelo beqabunga. Eduze kwayo, amanye amaqabunga abonisa izigaba ezihlukene zokutheleleka - amanye anamachashaza alula, amanye anezingqimba eziminyene, ezinochaki - anikeza umuzwa wokuqhubeka kwesifo. Izingxenye ezinempilo zamahlamvu zihlala ziluhlaza ngokujulile, ukuma kwazo okumahhadla, ezinoboya kancane kubonakala ngaphansi kwembongolo yesikhutha.
Izimbali ezimbili ezigqamile engxenyeni yesithathu engezansi yohlaka zethula umehluko obonakalayo osheshayo. Amacembe awo - aphuzi osagolide athinta i-russet eduze nezikhungo - aphuma ngaphandle avela ezindlini ezimnyama, ezihlanzekile futhi ezingenasici. Zisebenza njengesikhumbuzo esidabukisayo sobuhle bemvelo besitshalo, njengoba nje izifo ziqala ukuthatha amaqabunga aso. Eceleni kwezimbali, imiqumbe engavulwanga iphakamisa ukukhula okuqhubekayo nokuqina, okuboleka lesi simo kokubili isithakazelo sesayensi nokulinganisela ngokomzwelo.
Ingemuva lifiphele kancane, lihlanganiswe amaqabunga agqagqene neziqu ezinikezwe ngemibala ehlukahlukene eluhlaza. Lokhu kujula kwensimu kudonsela ukunaka emaqabunga angenwe yileli gciwane ngaphambili, okuwenza abe indawo okugxilwe kuyo ngenkathi kugcinwa umbono ophelele wokutshala okuphumelelayo, okuminyene. Isiphazamiso sokukhanya kwelanga emaqabunga sidala ukugqama okucashile emaphethelweni amaqabunga, kugcizelela isimo sawo sezinhlangothi ezintathu kanye nokusabalala kwesikhutha ezindaweni ezithungwe.
Mayelana nokwakheka, isithombe sifinyelela ukulingana okubucayi phakathi kokuxilongwa nobuhle. Ibhala iphethini ebonakalayo ehlukile yesikhutha - ukubukeka okumhlophe okunamabala, okunothuli emaqabunga aluhlaza - ngendlela engafeza kokubili izinjongo zemfundo nezobuciko. Umehluko wombala phakathi kwamaqabunga anegciwane kanye nezimbali ezigqamile kuthuthukisa ikhwalithi yokuxoxa: ngisho nalapho sibhekene nokungapheleli, isitshalo siyaqhubeka siqhakaza.
Ngokwesayensi, isithombe sithwebula ukubonakaliswa okujwayelekile kwe-Erysiphe cichoracearum noma isikhunta esihlobene, esichumayo ezimweni ezifudumele, eziswakeme nokugeleza komoya okulinganiselwe. Ukulungiswa okuhle kuveza ukuthungwa kwempuphu yesikhutha, okuvumela ukukhonjwa ngabalimi bezitshalo noma abalimi. Ngobuciko, ukusebenzisana kohlaza, okuphuzi, nokumhlophe ngaphansi kokukhanya kwemvelo kwemvelo kuvuselela umuzwa wamaqiniso nokushesha - uhlobo lokubuka okuthulile umuntu akwenzayo lapho enakekela ingadi yasehlobo.
Sekukonke, lesi sithombe sima njengerekhodi elinembile lokubonwayo kanye nokuvezwa okucatshangelwe kahle kwenselele evamile yengadi. Imema umbukeli ukuthi abone izifo hhayi njengento embi nje, kodwa njengengxenye yomjikelezo wemvelo - isikhumbuzo sokulinganisela phakathi kobuhle nokungapheleli kuyo yonke indawo ephilayo.
Isithombe sihlobene: Umhlahlandlela Wezinhlobo Ezinhle Kakhulu zika-Susan Anamehlo Amnyama ukuze Akhule Engadini Yakho