Ukubola okubomvu sisifo esibalulekileyo sokugcina amazambane.Ibangelwa yintsholongwane efumaneka emhlabeni iPhytophthora, Phytophthora, kwaye ifumaneka kwindawo ezikhulisa iitapile kwihlabathi jikelele.
Le pathogen ivelisa kumhlaba ohluthisiweyo, ngoko isifo sihlala sidityaniswa namasimi asezantsi okanye iindawo ezingakhutshelwanga kakuhle.Izehlo zezifo ziphezulu kumaqondo obushushu aphakathi kwama-70°F nama-85°F.
Awunakuqaphela ukubola kwepinki phambi kokuvuna okanye ukugcinwa kwe-tuber, kodwa iqala entsimini.Usulelo ludla ngokuvela kwiinyawo ezincanyathiselweyo, kodwa lunokwenzeka nasemehlweni okanye emanxebeni.I-pink rot inokusasazeka ukusuka kwii-tubers ukuya kwii-tubers ngexesha lokugcinwa.
Njengeentsholongwane zentsholongwane kade (Phytophthora infestans) kunye nokuvuza (Pythium lethal), intsholongwane ebolileyo epinki yi-oomycete efana nomngundo, hayi umngundo "wokwenene".
Kutheni sifanele sikhathalele?Ngenxa yokuba ukulawulwa kweekhemikhali ze-fungal pathogens ngokuqhelekileyo ayisebenzi kwii-oomycetes.Oku kunciphisa iindlela zokulawula iikhemikhali.
Ezona zisetyenziswa ngokuqhelekileyo ii-oomycete fungicides kunyango lwe-pink rot yi-mefenfloxacin (efana ne-Ridomil Gold esuka kwi-Syngenta, i-Ultra Flourish evela e-Nuffam) kunye ne-metataxyl (efana ne-MetaStar evela kwi-LG Life Sciences).I-Metalaxyl ikwabizwa ngokuba yi-metatalaxyl-M, efana neekhemikhali ezifana ne-metataxyl.
Ileyibhile ye-phosphoric acid ithetha amaxesha ahlukeneyo okusetyenziswa kunye neendlela.KwiPacific Northwest, sincoma izicelo ezintathu ukuya kwezine zamagqabi, ngokuqala ngobukhulu be-tuber kunye nobukhulu bekona.
Iasidi yePhosphoric ingasetyenziswa njengonyango emva kokuvuna emva kokuba i-tubers ingene kwindawo yokugcina.Ezinye izibulali zifo zokungunda ezisetyenziselwa ukulawula ukubola kwepinki yi-fentrazone (umzekelo, iRanman esuka kwi-Summit Agro), i-oxatipyrine (umzekelo, i-Orondis esuka kwi-Syngenta), kunye ne-flufentrazone (umzekelo, i-Valent USA Presidio).
Funda ileyibhile yemveliso ngononophelo kwaye udibane neengcali zengingqi malunga nexabiso elingcono kunye neshedyuli kwindawo yakho.
Ngelishwa, ezinye i-Rhodopseudomonas ziyakwazi ukumelana ne-metaxaxyl.Ukunganyangeki kweziyobisi kuqinisekisiwe kwiindawo ezikhula iitapile e-United States naseCanada.Oku kuthetha ukuba abanye abalimi banokufuna ukuqwalasela ezinye iindlela zokulawula ukubola kwepinki, njengokusetyenziswa kwe-asidi ye-phosphoric.
Wazi njani ukuba kukho i-metataxyl-resistant pink rot eyedwa kwifama yakho?Ngenisa isampulu ye-tuber kwilebhu yoxilongo lwesityalo kwaye ubacele ukuba benze uvavanyo lobuzaza be-metallaxyl-i-tuber kufuneka ibonise iimpawu zokubola okupinki.
Ezinye iindawo ziye zavavanywa ukuze kubonwe ukuxhaphaka kokubola kwepinki enganyangekiyo ngamachiza.Siza kuqhuba uphando kulo nyaka eWashington, Oregon nase-Idaho.
Sicela abalimi basePacific Northwest ukuba bajonge iimpawu zokubola kwepinki xa bevuna okanye behlola ukugcinwa, kwaye ukuba bafunyenwe, bathumele kuthi.Le nkonzo ikhululekile, kuba iindleko zovavanyo zihlawulwa kwisibonelelo esivela kuMntla-ntshona wePotato Research Association.
UCarrie Huffman Wohleb ngunjingalwazi/ingcali yengingqi kwiitapile, imifuno kunye nezityalo zembewu kwiYunivesithi yaseWashington State.Jonga onke amabali ombhali apha.