Pofuna kuchepetsa kuwonongeka kwa tizilombo toononga mbewu, tapanga tizilombo tambiri tambiri. Njira yogwiritsira ntchito tizirombo tating'onoting'ono tofanana, ndiye timasankha bwanji zomwe zili zoyenera mbewu zathu? Lero tikambirana za tizirombo tating'onoting'ono tiwiri tomwe timagwira: imidacloprid ndi thiamethoxam.
Alimife timadziwa bwino imidacloprid, chifukwa chake thiamethoxam ndi nyenyezi yatsopano yophera tizilombo. Ubwino wake ndi chiyani kuposa okalamba?
01. Kusanthula kosiyanasiyana kwa imidacloprid ndi thiamethoxam
Ngakhale njira ziwirizi ndizofanana (zimatha kuletsa tizilombo tating'onoting'ono tating'onoting'ono ta nicotinic acid acetylcholinesterase receptor, potero kumatseketsa kayendedwe kabwino ka tizilombo tating'onoting'ono tating'onoting'ono tomwe timayambitsa ziwalo ndi kufa kwa tizirombo), thiamethoxam ili ndi Ubwino waukulu 5:
Thiamethoxam imagwira ntchito kwambiri
Metabolite yayikulu ya thiamethoxam mu tizilombo ndi clothianidin, yomwe imagwirizana kwambiri ndi tizilombo ta acetylcholine receptors kuposa thiamethoxam, chifukwa chake imakhala ndi mankhwala ophera tizilombo;
Ntchito ya metabolites ya imidacloprid ya hydroxylated yafupika.
Thiamethoxam imatha kusungunuka m'madzi
Kusungunuka kwa thiamethoxam m'madzi ndi kasanu ndi kawiri kuposa imidacloprid, kotero ngakhale m'malo ouma, sizimakhudza kuyamwa ndi kugwiritsa ntchito thiamethoxam ndi tirigu.
Kafukufuku wasonyeza kuti m'nthaka yonyowa, thiamethoxam imawonetsa kuwongolera kofanana ndi imidacloprid; koma pakagwa chilala, ndibwino kwambiri kuposa imidacloprid.
Kutsika kwa thiamethoxam kotsika
Popeza imidacloprid yakhala pamsika kwa zaka pafupifupi 30, kukula kwakulimbana ndi tizilombo kwachulukirachulukira.
Malinga ndi malipoti, mphepo ya ntchentche zofiirira, nsabwe za m'masamba, ndi udzudzu wa chiva zimayamba kulimbana nayo.
Kuopsa kwakulimbana pakati pa thiamethoxam ndi imidacloprid pazomera zofiirira, nsabwe za m'masamba ndi tizirombo tina ndizochepa kwambiri.
Thiamethoxam imathandizira kukaniza mbewu ndikulimbikitsa kukula kwa mbewu
Thiamethoxam ili ndi mwayi womwe mankhwala ena ophera tizilombo sangafanane, ndiye kuti, ali ndi mphamvu yolimbikitsa mizu ndi mbande zamphamvu.
Kafukufuku akuwonetsa kuti Thiamethoxam imatha kuyambitsa mapuloteni osagwirizana ndi chomera, ndipo nthawi yomweyo imatulutsa auxin, cytokinin, gibberellin, abscisic acid, peroxidase, polyphenol oxidase, ndi phenylalanine ammonia lyase mu zomera. Zotsatira zake, thiamethoxam nawonso imapangitsa kuti mbeu zimayambira komanso mizu yolimba komanso imathandizira kukana kupsinjika.
Thiamethoxam imatenga nthawi yayitali
Thiamethoxam ili ndi ntchito yolimba yothandizira masamba ndi mizu ya systemic, ndipo wothandizirayo amatha kulowetsedwa mwachangu komanso mokwanira.
Ikagwiritsidwa ntchito panthaka kapena njere, thiamethoxam imayamwa mwachangu ndi mizu kapena mbande zomwe zikangoyamba kumene, ndipo imanyamulidwa kupita mbali zonse za thupi kudzera mu xylem m'thupi. Imakhala m'thupi nthawi yayitali ndikuchepetsa pang'onopang'ono. Kuwonongeka kwa mankhwala clothianidin kuli ndi mankhwala ophera tizilombo ambiri, chifukwa chake thiamethoxam imatha kukhala yayitali kuposa imidacloprid.
Post nthawi: Jan-11-2021