Ao Whānui: Kua heke te mana whakahaere o te Boscalid i te mate pāwera wawe mai i te 70–75% ki te 30–40% i ngā whakamātautau mara o Huitene
E whakaatu ana ngā mahi mara me ngā mahi taiwhanga i Huitene i te tere o te mawhiti o Alternaria solani i ngā harore patu SDHI. I Wisconsin, ka tīmata ngā tohunga i te rehu wawe i te 300 rā-P, ā, ka ripoatahia he ātete kaha ki te strobilurin.
Ka ngaro pea te pānga o ngā patu harore i roto i ētahi wā torutoru. I whakaatuhia mārama tēnei e tētahi rangahau Huitene mō te boscalid, he patu harore SDHI. I puta te pepa i roto i te European Journal of Plant Pathology i te 22 o Oketopa 2021.
I whakahaerehia ngā whakamātautau mara ki Nymö mai i te tau 2014 ki te 2017. I te tau 2014, i whakahaerea e te boscalid te mate pāwera wawe me te whai huatanga o te 70–75%. I muri i te tau 2015 i heke mārama, ki raro ki te 30–40%, e ai ki ngā kaituhi.
Nā ngā whakamātautau taiwhanga i whakamārama te hekenga. I te tau 2014, i kitea te whakarerekētanga SdhC-H134R i ētahi wāhi, engari he iti noa iho te auau. I te tau 2017, ko te nuinga o ngā tauira he SdhB-H278Y, he SdhC-H134R rānei. He tino tairongo ngā momo-mohoao, me ngā uara EC50 i raro iho i te 1 µg/mL. Ko ngā momo-whakarerekētanga he uara EC50 neke atu i te 100 µg/mL.
Ngā rā o te wiki. Whakakore i te ohaurunga mā te pāwhiri kotahi.
Kua ngoikore kē ngā strobilurin. Tata ki te 90% o te taupori o Huitene i mau i te whakakapinga F129L, e whakaiti ana i te aro ki ngā harore patu QoI. Kua pūrongohia hoki te whakahekenga o te whai huatanga o te boscalid i roto i ētahi atu whenua, e ai ki ngā kaituhi.
Te rehu wā me ngā rā-P
I te Hononga o Amerika, ka whakamahia e te Whare Wānanga o Wisconsin tētahi tauira wae-wera e kiia nei ko ngā rā ā-tinana o te rīwai, arā, ko ngā rā-P. Ko te uara o te 300, neke atu rānei, te paepae mō te mōrearea o te mate pāwera wawe. Ka tīmata te paninga tuatahi o te harore patu harore ārai.
I te 20 o Hune 2026, kua hipa te tohu i ngā whakato tōmua i ngā wāhi e rua o Wisconsin. E ai ki te tohunga huawhenua toronga a Amanda Gevens, kua eke a Spring Green ki te 386 rā-P, ā, ko Arlington ki te 377. Mō te pirau o te hua rā, ka whakamahia e te ratonga kotahi te uara kaha o te mate o te 18, neke atu rānei, hei whakaoho i te rehu.
E whakatūpato ana hoki te whakahoutanga o Wisconsin mō te ātete nui ki ngā patu harore QoI, tae atu ki te azoxystrobin, i roto i te taupori Alternaria o te rohe. Kei roto i tana rārangi hua ngā kōwhiringa SDHI me te triazole, pērā i te boscalid, te fluopyram me te difenoconazole.
He aha te take
He maha ngā wā ka kiia te mate pāwera wawe he mate iti noa iho, he mate o te mutunga o te wā. Heoi, e whakaatu ana ngā raraunga o Huitene ka taea e te rōpū patu harore kotahi te ngaro i te haurua o tōna pānga mara i roto i te toru tau pea. Ina ngoikore ngā rōpū QoI me SDHI, he iti noa ngā taputapu e toe ana.
Me tīmata ngā kaiwhakatipu i ngā rehu mā te whakamahi i tētahi tauira mōrearea, kaua mā te maramataka. Me whakawhiti hoki e rātou ngā momo mahi, me te whakamahi i ngā ranunga me tētahi hoa mahi nō tētahi atu rōpū. Mā te whakamātautau ātete o te taupori Alternaria o te rohe ka āwhina i te whiriwhiri i taua hoa mahi.
Te ārai me te whakahaere · Tuhipoka ētita
Te mate pāwera wawe (Alternaria solani): ngā mea ka taea e ngā kaiwhakatipu te mahi
- Prevention: Te hauota taurite, te hurihanga hua, te tango i te mate urutā haulm a volunteers.
- Te aroturuki: Tīmatahia ngā rehu mā te whakamahi i tētahi tauira mōrearea, pērā i te 300 rā-P, kaua mā te whakamahi i te maramataka.
- Parenga matū: Difenoconazole (FRAC 3), boscalid (FRAC 7), azoxystrobin (FRAC 11) me te parahi (FRAC M1). Tirohia te rēhita ā-motu o tō whenua.
- Te whakahaere ātete: Kaua e neke atu i te rua, i te toru rānei ngā wā e whakamahia ai ngā rōpū 11 me te 7 i ia wā, engari me whakauru noa iho ki ngā ranunga.
Nā te tīma ētita o potatoes.news tēnei tuhinga hei whakamōhiotanga anake. Ehara i te taunakitanga nā tētahi kamupene, ā, ehara hoki i te mea whakahau. Whakamahia noa ngā hua tiaki tipu kua whakamanahia i tō whenua, ā, whai i te tapanga. He rerekē ngā ingoa hua me ngā rēhitatanga i waenga i ngā whenua; kōrero ki tētahi tohunga ahuwhenua ā-rohe.
Whakaahua: Te mate pāwera wawe (Alternaria solani) i runga i te rau rīwai (whakaahua). Linnea Stridh / Wikimedia Commons, CC BY-SA 4.0
