Malinga ndi kafukufuku wopangidwa ndi Produce Solutions, gulu la agronomists la mbatata, njira yotsatizana yogwiritsa ntchito nematocide yamadzimadzi yokhala ndi njira yatsopano yochitira zinthu, pamodzi ndi chinthu chomwe chilipo granular, ndiye njira yabwino kwambiri yothanirana ndi nematode ya mbatata.
Kampaniyo idakhala zaka zitatu kuyesa Velum Prime (fluopyram) ku Shropshire, ndikuigwiritsa ntchito yokha komanso motsatizana ndi ma granular nematocides pamitengo yosiyana. Kampaniyo tsopano ili ndi chithunzi chomveka bwino cha malo ake mu njira zowongolera za mbatata cyst nematode (PCN) ndi ndalama zomwe zimagwirizana.
Kwa agronomist James Lee, yemwe ankayang'anira mayeserowo, ntchitoyi inatsimikizira kuti Velum Prime (fluopyram) sichilowa m'malo mwa granular nematicides. "Pambuyo pa zaka zitatu, tawona Velum Prime ikugwira ntchito yofunikira pakuwonjezera zinthu zina," akutero. "Pankhaniyi, zomwe tapeza zikugwirizana ndi zomwe Bayer wakhala akunena nthawi zonse."
Mpaka chaka chatha, kuwongolera tizilombo kumatengera kugwiritsa ntchito ma granular nematicides monga vidat (oxamil). Kenako kunabwera Velum Prime kumapeto kwa chaka cha 2019, chomwe chidachokera ku SDHI fungicide fluopyram, yodziwika bwino kwa alimi a tirigu omwe amalimbana ndi matenda a foliar ngati septoria.
M'mayesero a 2019, zokolola zabwino kwambiri komanso malire okwera kwambiri zidapezedwa pogwiritsa ntchito Velum Prime ndi Vydate kuchuluka kwathunthu m'malo mokhala ndi theka la granular. Njira imeneyi imabweretsa ndalama zogulira mankhwala kumayambiriro kwa nyengo kwa alimi, nthawi zambiri mtengo waukulu kwambiri wotetezera mbewu.
"Ndalama zoyamba ndizokwera, koma inali njira yopindulitsa kwambiri. Anabweretsa zokolola zapamwamba kwambiri komanso ndalama zabwino kwambiri.
Mayeso awonetsa kuti mitundu ya nematode yomwe ilipo ndi G pallida yokha, ndipo mayeso obzala asanabzalidwe akuwonetsa kuchuluka kwa cysts 27/g nthaka. Pazigawo za mizere iwiri, kutalika kwa mamita 12, mankhwala ankagwiritsidwa ntchito pogwiritsa ntchito zipangizo zaulimi: Velum Prime anagwiritsidwa ntchito pa seeder, ndipo Vydate anagwiritsidwa ntchito pabedi.
"Machiritso onse anali ndi zotsatira zabwino pakukula kwa zokolola ndi zokolola zomaliza poyerekeza ndi mankhwala osachiritsika, kusonyeza kulamulira kwa nematode," akuwonjezera Bambo Li. Ngakhale kuti zopindulitsa zoteteza mbewu za Velum Prime zinali zapamwamba pang'ono kuposa Vydate ikagwiritsidwa ntchito yokha, kugwiritsa ntchito kwawo kosasintha kumabweretsa zokolola zambiri.
"Kusiyana kwa zokolola kokhaku kumatsimikizira kugwiritsa ntchito zinthu zonse ziwiri mokwanira," akutsindika. "Zomwe zili m'mphepete mwa nyanja zimathandiziranso izi ndipo zikuwonetsa kupsinjika kwa nematode pambewu." Apo ayi, zopindulitsa zomveka za thupi zinalembedwa m'madera onse ochiritsidwa, popanda zotsatira za mankhwala pa zinthu zowuma kapena kukhalapo kwa zolakwika zamkati.
Panalinso kusiyana kochepa pa kameredwe ndi kakulidwe kakukokera pakati pa mankhwala, zonse zimafika pa 50% kumera patatha masiku 31 mutabzala. "Monga momwe zimayembekezeredwa, malo omwe anali otetezedwa bwino ku nematode adakhala ndi zomera zolimba chifukwa cha kuchuluka kwa zinthu zomwe zimagwiritsidwa ntchito."
Cholakwika chokhacho pakuyesa chinali chakuti kusanthula nthaka pambuyo pokolola kunawonetsa kuti chiŵerengero chapakati pa mazira oyambirira (Pi) ndi chiwerengero chomaliza cha mazira (Pf) sichinasinthe. “Izi zinali zodabwitsa. Zotsatira za agrotechnical zikuwonetsa kuti ziwembu zomwe sizinachiritsidwe zitha kukhala ndi chiwopsezo chochulukirachulukira, koma sikunatheke kuwonjezereka pamankhwala aliwonse. Sitikudziwa momwe tingafotokozere."
Velum Prime ndiwowonjezera wolandirika ku chida cholimbana ndi nematode ya mbatata ndipo idafika nthawi yake, akufotokoza mwachidule James Lee wa Produce Solutions.
Chifukwa tsogolo lalitali la granular nematicides silidziwika bwino, opanga ayenera kutenga mwayi uliwonse kuyesa chinthu chatsopano ndikuwona ngati chikugwirizana nawo.