Mushure menguva refu yekuchengetedza, fungicide bvunzo mune karoti kubva kumugadziri wechigadzirwa BASF inoratidza kuti varimi vekariti vane sarudzo yekudzikamisa kurasikirwa kwavo kwekuchengeta. Kutongwa kwacho kwakaitwa muFlevoland gore rakapera.
BASF yakatanga yakaenzanisa akasiyana fungicides, kusanganisira ayo anogadzira Signum, Scala uye Dagonis SC. Izvi zvakaitwa muchirongwa chekugezesa uye zvakare mune akati wandei marongero apo zviwanikwa zvinochinjana sezvazviri mukuita. Muedzo wefungicide wakaitwa nerudzi rweNerac pazvirongwa zvinoshanda muDronten neMarknesse.
Nyanzvi yehunyanzvi Kick van Saarloos yakatsanangura zvakabuda mukutongwa svondo rino. Kuti atsigire nyaya yake, akaunganidza makarotsi akarongwa ane fungal infestations kubva kumasampuli ekuchengetedza. Kukundikana kwezvinhu zvakarapwa mushure memwedzi mishanu yekuchengetedza kwakasiyana zvakanyanya zvichienderana nemarongwa ekurapa uye kumanikidza kwechirwere.
High mildew pressure
Muyedzo weBASF muDronten wakavakwa muna 2020 panzvimbo ine hunyoro hwakanyanya. Pachirongwa chekudzidzira muMarknesse, mashizha akatapukirwa nealternaria munguva yekukura. Mune ese maviri bvunzo BASF yakaenzanisa, pakati pezvimwe zvinhu, zvigadzirwa zvayo neyakajairwa fungicide.
Kupfapfaidza mana fungicide muzvinhu zvese zvakarapwa. Kudzorwa kwefungi kwakatanga pakupera kwaChikunguru. Zvadaro, nguva yevhiki mbiri nehafu yakashandiswa muchirongwa. Kupfapfaidza kwekupedzisira kwakaitika pakati pemwedzi waGunyana.
Muedzo wemumunda unoratidza kuti Signum neDagonis SC pamwe neSignum pamwe chete neScala zvine mhedzisiro yakanaka pane zvese ukuru uye alternaria. Van Saarloos anotaridza pahwaro hwemapepa kuti 98 percent ine mildew effect yakatemerwa Dagonis SC, yeSignum yakapfapfaidzwa nemushonga wemvura unova chikamu che95 percent.
Mhedzisiro pane alternaria
Panyaya yechirwere chinorema chealternaria, chirongwa chine kaviri Signum ine weti mumiriri inoteverwa nekaviri Scala ine wetting agent kuti iwane efficacy percentage ye80 percent. Muchidzidzo ichi neBASF, fungicide yakajairika inoramba iine 64 muzana.
'Kuita kwakanaka kwefungi kunoratidzwawo mugoho rehekita mumunda,' anodaro Van Saarloos. 'Kuenzaniswa nekusarapwa, tinoverenga imwe goho re22 muzana yezvinhu zvine Signum uye Scala uye zvinhu zvine Dagonis SC uye Scala. Mukuedza uku, izvi zvairevawo kuti taigona kukohwa mamwe matani makumi maviri nemaviri emakarotsi kubva pahekita imwe chete. '
Ongororo ichangoburwa yemasampuli ekuchengetedza inoratidza kuti mushure memwedzi mishanu isati yatongwa muDronten, chikamu chekudonha chinosiyana kubva pa9.8 muzana kusvika 22.7 muzana. Iwo makarotsi kubva muyedzo chirongwa muMarknesse akasimba mukuchengetedza. Pano chinhu chakanakisa chinotora mwero wekutadza kwekuchengetedza we2.4 muzana uye kune chinhu chisina kuita zvakanaka, BASF inorekodha chiyero chekutadza che6.3 muzana.
Zvirinani pane standard fungicide
Van Saarloos: 'Masampuli ekuchengetedza akanakisa akabatwa neSignum neScala. Zvinhu zvine Dagonis SC zvine kukundikana zvishoma, asi zvichiri kuita zvirinani kupfuura fungicide yakajairwa. Maererano nenyanzvi yemakaroti yeBASF, midzi ine mold inonyanya kuve ne botrytis uye sclerotinia.
Anopedzisa kuti zvigadzirwa zvakadai seSignum uye Scala mumakaroti zvinopa zvakanakisa kudzora mhedzisiro. Uyezve, Van Saarloos anoona Dagonis SC seimwe nzira yakanaka. 'Mushonga uyu une simba guru pazvirwere zvefungal muzvirimwa zvakawanda zvemuriwo. Imwezve mukana ishoma shoma yezvinhu inoshanda inopfapfaidzwa pahekita. Izvo zvinoita kuti chigadzirwa chitaridzike, semuenzaniso, kurima zvinoenderana nemamiriro ePlanetProof. '
MuBrassicas, hosha huru iAlternaria, ring spot neBotrytis. Resistance inyaya chaiyo saka varimi vanokurudzirwa kushandisa akati wandei mafungicides ane nzira dzakasiyana dzekuita. Chiratidzo (boscalid uye pyraclostrobin) ine chinzvimbo chakasimba muchikamu ichi (Brassicas uye makarotsi kunyanya) nekuda kwebasa rayo rakakura uye maitiro ayo akasiyana ekuita.