Ngokocwaningo olwenziwe yiProduce Solutions, iqembu lezazi zezolimo namazambane, indlela elandelanayo esebenzisa i-nematocide ewuketshezi enendlela entsha yokwenza, kanye nomkhiqizo okhona oyimbudumbudu, iqhinga elingcono kakhulu lokulawula i-cyst nematode yamazambane.
Le nkampani yachitha iminyaka emithathu ihlola iVelum Prime (fluopyram) eShropshire, iyisebenzisa yodwa futhi ilandelana nama-granular nematocides ngamanani ahlukahlukene. Ifemu manje inesithombe esicacile sendawo yayo kumasu okulawula i-potato cyst nematode (PCN) kanye nezindleko ezihambisanayo.
Kusazi sezolimo namahlathi u-James Lee, obengamele izivivinyo, umsebenzi ukuqinisekisile ukuthi iVelum Prime (fluopyram) ayithatheli indawo ye-granular nematicides. “Ngemuva kweminyaka emithathu, sibone iVelum Prime idlala indima ebalulekile ekugcwaliseni eminye imikhiqizo,” usho kanje. "Ngalokhu, esikutholile kuhambisana nalokho okushiwo yiBayer."
Kuze kube ngonyaka odlule, ukulawulwa kwezinambuzane zamakhemikhali kwakusekelwe ekusetshenzisweni kwe-nematicides eyimbudumbudu njenge-vidat (oxamil). Kwabe sekufika iVelum Prime entwasahlobo ka-2019, esekelwe ku-SDHI fungicide fluopyram, ejwayele abalimi bakakolweni abalwa nezifo zamaqabunga njenge-septoria.
Esivivinyweni sango-2019, kokubili isivuno esihle kakhulu kanye nemajini yesamba esiphezulu kutholwe ngokuqhubekayo kusetshenziswa isilinganiso esigcwele se-Velum Prime ne-Vydate esikhundleni sokulinganisa uhhafu wegranule. Le ndlela ingenisa izindleko ezibalulekile zamakhemikhali esizini yangaphambi kwesikhathi kubalimi, ngokuvamile okuyizindleko ezinkulu zokuvikela izitshalo.
“Izindleko zokuqala ziphezulu, kodwa bekuyindlela enenzuzo kakhulu. Waletha isivuno esiphezulu kanye nemali engenayo engcono kakhulu.
Ukuhlola kubonise ukuthi izinhlobo ze-nematode ezikhona ziyi-G pallida kuphela, nokuhlolwa kwangaphambi kokutshala okubonisa isibalo sokuqala sesimila esingu-27/g umhlabathi. Emagcekeni emigqa emibili, ngayinye engamamitha angu-12 ubude, ukwelashwa kwenziwa kusetshenziswa imishini yezolimo: I-Velum Prime yafakwa emshinini wokuhlwanyela imbewu, kwathi i-Vydate yafakwa ekwelashweni kombhede.
"Zonke izindlela zokwelapha zaba nomthelela omuhle ekukhuleni kwesivuno kanye nesivuno sokugcina uma kuqhathaniswa nokwelashwa okungalashwa, okubonisa ukulawulwa kwe-nematode," kunezela uMnu. Nakuba izinzuzo zokuvikela izitshalo zeVelum Prime bezingaphezulu kancane kune-Vydate uma isetshenziswa iyodwa, ukusetshenziswa kwayo okungaguquki kubangele isivuno esikhulu kakhulu.
“Lo mehluko wesivuno uwodwa uthethelela ukusebenzisa yomibili imikhiqizo ngokugcwele,” uyagcizelela. "Idatha yemajini nayo iyakuqinisekisa lokhu futhi ikhombisa ingcindezi ye-nematode esitjalweni." Uma kungenjalo, izinzuzo ezicacile zomzimba zarekhodwa kuzo zonke izindawo ezilashwayo, ngaphandle komthelela wokwelashwa kokuqukethwe kwento eyomile noma ukuba khona kokukhubazeka kwangaphakathi.
Kuphinde kwaba nomehluko omncane ekuhlumeni nasekuthuthukisweni kokudonsa phakathi kokwelashwa, konke kwafinyelela ku-50% ukuhluma ezinsukwini ezingama-31 ngemuva kokutshala. "Njengoba bekulindelekile, iziza ebezivikeleke kangcono ku-nematode zaba nezitshalo ezinamandla ngenxa yamazinga aphezulu okufakwa kwemikhiqizo."
Okuwukuphela kwento engaqondakali ocwaningweni kwaba ukuthi ukuhlaziywa kwenhlabathi ngemva kokuvuna kwabonisa ukuthi isilinganiso phakathi kwenani lokuqala lamaqanda (Pi) kanye nenani lokugcina lamaqanda (Pf) alizange lishintshe. “Kwakumangaza lokhu. Imiphumela ye-Agrotechnical iphakamise ukuthi iziza ezingakaphathwa zizoba nezinga eliphezulu lokuphindaphinda, kodwa mancane amathuba okuba kube nokwenyuka kunoma yikuphi ukwelapha. Asazi ukuthi singakuchaza kanjani."
I-Velum Prime iyisengezo esamukelekayo esikhalimeni sokulwa nama-cyst nematode futhi yafika ngesikhathi, kufingqa u-James Lee weProduce Solutions.
Ngenxa yokuthi ikusasa lesikhathi eside le-granular nematicides alicacile, abakhiqizi kufanele basebenzise wonke amathuba ukuze bazame umkhiqizo omusha futhi babone ukuthi uyabafanela yini.