Ukubola okubomvu kuyisifo esibalulekile sokugcina amazambane.Ibangelwa yi-pathogen etholakala emhlabathini i-Phytophthora, i-Phytophthora, futhi itholakala ezindaweni ezikhulayo zamazambane emhlabeni jikelele.
Le pathogen izala emhlabathini osuthekile, ngakho-ke lesi sifo sivame ukuhlotshaniswa namasimu aphansi noma izindawo ezingakhanyi kahle.Izehlakalo zezifo ziphezulu emazingeni okushisa aphakathi kuka-70°F no-85°F.
Ungase ungaboni ukubola okubomvana ngaphambi kokuvuna noma ukugcinwa kwezigaxa, kodwa kuqala ensimini.Amagciwane ngokuvamile aqala ngokunamathiselwe ezinyaweni, kodwa kungenzeka futhi emehlweni noma amanxeba.Ukubola okuphinki nakho kungasakazeka kusuka ezigabeni kuya ezigabeni ngesikhathi sokugcinwa.
Njengamagciwane okulimaza sekwephuzile (Phytophthora infestans) kanye nokuvuza (Pythium lethal), i-pathogen ebolayo ebolile iyi-oomycete efana ne-fungus, hhayi ukhunta "wangempela".
Kungani kufanele sikhathazeke?Ngoba ukulawulwa kwamakhemikhali kwamagciwane okukhunta ngokuvamile akusebenzi kuma-oomycetes.Lokhu kunciphisa izinketho zokulawula amakhemikhali.
Ama-fungicides e-oomycete asetshenziswa kakhulu ekwelapheni ukubola okupinki yi-mefenfloxacin (efana ne-Ridomil Gold yase-Syngenta, i-Ultra Flourish yase-Nuffam) kanye ne-metataxyl (njenge-MetaStar evela ku-LG Life Sciences).I-Metalaxyl yaziwa nangokuthi i-metataxyl-M, efana namakhemikhali ne-metalaxyl.
Ilebula le-phosphoric acid lisho izikhathi nezindlela ezihlukahlukene zokusetshenziswa.E-Pacific Northwest, sincoma ukuthi kusetshenziswe amaqabunga amathathu kuya kwamane, aqale ngosayizi we-tuber kanye nosayizi wekhona.
I-Phosphoric acid ingasetshenziswa futhi njengendlela yokwelapha ngemva kokuvuna ngemva kokuba izilimo eziyizigaxa sezingenile endaweni yokugcina.Amanye ama-fungicides asetshenziselwa ukulawula ukubola okubomvana yi-fentrazone (isibonelo, i-Ranman evela e-Summit Agro), i-oxatipyrine (isibonelo, i-Orondis yase-Syngenta), kanye ne-flufentrazone (isibonelo, i-Valent USA Presidio).
Funda ilebula yomkhiqizo ngokucophelela futhi uxhumane nochwepheshe bendawo mayelana nenani elingcono kakhulu neshejuli endaweni yangakini.
Ngeshwa, amanye ama-Rhodopseudomonas amelana ne-metaxyl.Ukumelana nezidakamizwa kuqinisekisiwe ezindaweni ezitshala amazambane e-United States naseCanada.Lokhu kusho ukuthi abanye abalimi kungase kudingeke bacabangele ezinye izindlela zokulawula ukubola kwepinki, njengokufakwa kwe-phosphoric acid.
Wazi kanjani ukuthi kukhona okubolile okungamelana ne-metaxyl epulazini lakho?Thumela isampula ye-tuber elabhorethri yokuxilonga izitshalo bese ubacela ukuthi benze ukuhlolwa kokuzwela kwe-metaxyl-i-tuber kufanele ibonise izimpawu zokubola okuphinki.
Ezinye izindawo sezihloliwe ukuze kutholwe ukusabalala kwe-pink rot engazweli emishanguzweni.Sizokwenza ucwaningo kulo nyaka eWashington, Oregon nase-Idaho.
Sicela abalimi basePacific Northwest ukuthi babheke izimpawu zokubola okuphinki lapho bevuna noma behlola indawo yokubeka, futhi uma betholakele, basithumelele yona.Le sevisi imahhala, ngoba izindleko zokuhlolwa zikhokhwa ngesibonelelo sikahulumeni esivela ku-Northwest Potato Research Association.
UCarrie Huffman Wohleb ungusolwazi/uchwepheshe wesifunda kumazambane, izitshalo zemifino kanye nembewu e-Washington State University.Buka zonke izindaba zababhali lapha.