qudhunka cas waa cudur kaydinta muhiimka ah ee baradhada.Waxaa sababa cudur-sidaha ciidda ka dhasha Phytophthora, Phytophthora, waxaana laga helaa meelaha baradhada ka baxa ee adduunka oo dhan.
Cudurkaan cudur-sidaha ah wuxuu ku soo baxaa carro dherarsan, sidaas darteed cudurku wuxuu inta badan la xiriiraa dhul-jiif ah ama meelaha aan si liidata u biyo lahayn.Dhacdooyinka cudurku waxay ku badan yihiin heerkulka u dhexeeya 70 ° F iyo 85 ° F.
Waxaa laga yaabaa inaadan dareemin qudhunka casaanka ah ka hor goosashada ama kaydinta tuberka, laakiin waxay ka bilaabataa beerta.Caadi ahaan caabuqyadu waxay ka yimaadaan lugaha, laakiin waxay sidoo kale ku dhici karaan indhaha ama nabarrada.qudhunka casaanka ayaa sidoo kale ku faafi kara digriiga ilaa digriiga inta lagu jiro kaydinta.
Sida jeermiska caabuqa goor dambe (Phytophthora infestans) iyo dheecaanka (Pythium dilaa ah), bakteeriyada qudhuntay ee casaanka ah waa fungus-sida oomycete, ma aha fangaska "dhabta ah".
Maxaynu u danaynaynaa?Sababtoo ah xakamaynta kiimikaad ee cudurada fangas guud ahaan maaha mid lagu dabaqi karo oomycetes.Tani waxay xaddidaysaa fursadaha xakamaynta kiimikada.
Fungicides-ka oomycete-ka ugu badan ee loo isticmaalo daawaynta qudhunka casaanka waa mefenfloxacin (sida Ridomil Gold from Syngenta, Ultra Flourish from Nuffam) iyo metalaxyl (sida MetaStar oo ka socota Sayniska Nolosha LG).Metalaxyl waxa kale oo loo yaqaan metalaxyl-M, kaas oo kiimiko ahaan la mid ah metalaxyl.
Calaamadda phosphoric acid waxay tusinaysaa waqtiyo iyo habab kala duwan oo codsiga.Waqooyiga-galbeed ee Baasifiga, waxaan kugula talineynaa saddex ilaa afar codsiyo caleen ah, laga bilaabo cabbirka tuberka iyo xajmiga geeska.
Fosfooraska acid sidoo kale waxaa loo isticmaali karaa daawaynta goosashada ka dib ka dib marka digriiga galaan kaydinta.Daawooyinka kale ee loo isticmaalo in lagu xakameeyo qudhunka casaanka ah waa fentrazone (tusaale, Ranman from Summit Agro), oxatipyrine (tusaale, Orondis from Syngenta), iyo flufentrazone (tusaale, Valent USA Presidio).
Si taxadar leh u akhri calaamadda alaabta oo kala tasho khubaro deegaanka ah qiimaha iyo jadwalka ugu fiican aaggaaga.
Nasiib darro, qaar ka mid ah Rhodopseudomonas ayaa u adkaysta metalaxyl.Iska caabbinta maandooriyaha ayaa la xaqiijiyay meelaha ka baxa baradhada ee Maraykanka iyo Kanada.Tani waxay ka dhigan tahay in beeralayda qaar ay u baahan karaan inay tixgeliyaan habab kale si loo xakameeyo qudhunka casaanka, sida codsiga fosfooraska.
Sidee ku ogaan kartaa haddii ay jiraan go'doono qudhunka casaanka ah ee u adkaysta metalaxyl ee beertaada?U soo gudbi muunadda tuberka shaybaarka ogaanshaha dhirta oo weydii inay sameeyaan baaritaanka xasaasiga ah ee metalaxyl - tuberku waa inuu muujiyaa calaamadaha qudhunka casaanka ah.
Meelaha qaar ayaa la sahamiyay si loo ogaado fiditaanka qudhunka casaanka ah ee u adkeysta daroogada.Waxaan sahan ku samayn doonaa sanadkan Washington, Oregon iyo Idaho.
Waxaan ka codsaneynaa beeraleyda Waqooyiga-galbeed ee Baasifiga inay raadiyaan calaamadaha qudhunka casaanka marka ay goosanayaan ama baarayaan kaydinta, haddii la helo, noo soo dir.Adeegani waa bilaash, sababtoo ah kharashka imtixaanka waxaa laga bixiyaa deeq ka timid Ururka Cilmi-baarista Baradhada Waqooyi-galbeed.
Carrie Huffman Wohleb waa borofisar ku-xigeen/khabiir gobolka ku takhasusay baradhada, khudaarta iyo miraha abuurka ee Jaamacadda Gobolka Washington.Halkan ka daawo dhammaan sheekooyinka qoraaga.