Nematodes yog cov tsiaj txhu ntau tshaj plaws hauv ntiaj teb thiab tuaj yeem pom nyob qhov twg muaj dej. Ntawm lawv, cov nroj tsuag cab kab mob nematodes suav txog 10%. Lawv ua rau muaj kev puas tsuaj rau cov nroj tsuag loj hlob los ntawm cov kab mob parasitism thiab yog ib qho tseem ceeb ua rau kev poob nyiaj txiag loj hauv kev ua liaj ua teb thiab hav zoov. Hauv kev kuaj mob hauv thaj teb, cov kab mob nematode tuaj yeem yooj yim tsis meej pem nrog cov ntsiab lus tsis txaus, mob qog noj ntshav hauv paus, clubroot, thiab lwm yam, ua rau muaj kev kuaj mob tsis raug lossis ncua kev tiv thaiv thiab kho. Tsis tas li ntawd, cov kab mob hauv paus tshwm sim los ntawm kev noj nematode muab lub sijhawm rau qhov tshwm sim ntawm cov kab mob hauv av xws li cov kab mob wilt, damping tawm, hauv paus rot, damping-off, thiab canker, uas ua rau cov kab mob sib xyaw thiab ua rau muaj kev nyuaj siab ntxiv.
Cov ntawv ceeb toom qhia tias kev puas tsuaj nematode ua rau kev lag luam poob txog US $ 157 billion thoob ntiaj teb txhua xyoo, uas yog sib npaug rau kab puas tsuaj. Txawm li cas los xij, kev lag luam sib txawv ntawm nematicides thiab tshuaj tua kab yog loj heev. Kev sib koom ua lag luam ntawm nematicides tsuas yog 1/10 ntawm kev ua lag luam ntawm cov tshuaj tua kab, thiab tseem muaj chaw loj rau kev loj hlob.
Fluensulfone
Fluensulfone yog ib hom heterocyclic fluoroalkenyl sulfone nematicide tsim los ntawm Israel's Maxim Corporation (tam sim no ADAMA) los ntawm 1993 txog 1994. Fluensulfone yog ib qho non-fumigating nematicide nrog tsawg toxicity thiab kev sib cuag tua nyhuv. Nws inhibits nematodes los ntawm kev tau txais lipid zog reserves thiab thaiv cov nematodes los ntawm kev tau txais lub zog raws, yog li tua nematodes.
Kev tshawb fawb tau pom tias fluensulfone txawv ntawm carbamates, organophosphorus, thiab macrolide tebchaw nyob rau hauv uas nws cov nematicidal nyhuv yog irreversible thiab nematodes tuag nyob rau hauv 48 teev tom qab kev sib cuag nrog cov kua. Fluensulfone muaj cov nyhuv tua zoo rau peb hom nematode qe, larvae thiab cov neeg laus. Thaum nws ua rau cov qe, nws muaj qee yam ovicide nyhuv thiab txo cov qe qe qe; thaum nws ua rau larvae, nws ua rau txhav thiab tuag tes tuag taw ntawm larvae, tsis muaj zog lub laub thiab pub kev ua ub no ntawm stylet, thiab cuam tshuam nws cov metabolism thiab rog tsub zuj zuj.
Mechanism ntawm kev ua
Fluensulfone ua rau nematodes los ntawm kev sib cuag, txo cov kev ua ntawm nematode thiab ua rau lawv tuag tes tuag taw. Lawv tso tseg tsis pub noj tom qab 1 teev ntawm kev kis, txo lawv txoj kev muaj peev xwm kis tau, txo lawv lub peev xwm tso qe, txo lawv cov qe qe qe, thiab hatch larvae uas tsis tuaj yeem ciaj sia. Nws irreversible nematicidal nyhuv tua nematodes.
Fluensulfone ua rau ntau yam txheej txheem physiological hauv nematodes, qhia tias cov tshuaj no muaj cov txheej txheem tshiab ntawm kev ua haujlwm uas xav tias txawv ntawm cov tshuaj nematicides thiab tshuaj tua kab tam sim no. Nws cov txheej txheem tshwj xeeb ntawm kev txiav txim tsis meej thiab xav tau kev tshawb fawb ntxiv.
daim ntawv thov
Siv los tswj ntau yam kab mob parasitic nematodes thiab hauv paus-knot nematodes ntawm txiv hmab txiv ntoo, melons, zaub thiab horticultural qoob loo.
Cov kev tshawb fawb tau pom tias fluthiacen sulfone tuaj yeem tiv thaiv thiab tswj cov hauv paus-knot nematodes xws li Javan cag-knot nematode, yav qab teb cag-knot nematode, qaum qaum-knot nematode, stinging nematode, qos dawb nematode, Colombian cag-knot nematode, pob kws luv- lub cev nematode, thiab peanut cag-knot nematode.
kev cia siab
Thaum Lub Rau Hli 28, 2000, Nyiv lub Bayer Pesticide Co., Ltd. tau thov rau kev sib xyaw patent rau fluensulfone hauv kuv lub tebchaws; invention lub npe: nematicidal trifluorobutene compound; Hnub tso cai tshaj tawm: Lub Xya Hli 28, 2004; Daim ntawv tso cai tus lej: CN1159304C. Lub sijhawm tiv thaiv ntawm patent no tau tas sijhawm rau Lub Rau Hli 27, 2020.
Nyob rau hauv xyoo tas los no, nrog rau kev txhawb nqa ntawm cov zaub tsis raws caij nyoog, cov hauv paus-knot nematodes tau tsim los ua cov kab mob tseem ceeb tshaj plaws hauv av. Tam sim no, ntau dua 90 qhov tseem ceeb hauv paus-knot nematodes tau tshawb pom thoob ntiaj teb thiab tuaj yeem kis tau ntau dua 3,000 hom nroj tsuag. Hauv paus-knot nematodes tsis tsuas yog muaj ntau hom tswv, tab sis kuj tuaj yeem kis tau qee yam kab mob fungal thiab kab mob. Fluensulfone, raws li cov tshuaj nematicide tshiab tsis ntev los no tau tsim tawm ntawm kev ua lag luam, muaj lub sijhawm ua qhov tseem ceeb.
