Nakuba i-metamine fumigants-sodium metam kanye ne-potassium metam-kuye kwafakazela ukwethenjwa okukhulu ekulawuleni ukhula, izifo, nama-nematode emasimini amazambane iminyaka engaphezu kwamashumi amane, okutholwe kwakamuva kuqinisekisile ukuthi kukhona okunye ukusetshenziswa okuningi komkhiqizo. ukwandisa ukusebenza kahle.
Idatha entsha yokuhamba kwe-metames emhlabathini ngemva kokufakwa "intsha" ngandlela-thile. Abaningi babecabanga ukuthi ukuhanjiswa kwemikhiqizo phezulu, phansi nangaseceleni kwakuzoba umfaniswano ngebanga elingama-intshi angu-6 kuya kwangu-12. Omunye umcabango ovamile wawuwukuthi umkhiqizo uzohlala emhlabathini, ucindezela izinambuzane kungakhathaliseki izimo zenhlabathi.
Ngo-2017, umbhali walesi sihloko waqala ukuzibuza ukuthi kwenzekani emhlabathini ngemuva kokusetshenziswa kwe-metham, lapho ochwepheshe abaningana be-anyanisi e-Washington beqala ukuzibuza ukuthi umkhiqizo ulahlekelwa ukusebenza kahle. Abayitholanga imiphumela ebilindelwe. Umbhali walesi sihloko uthenge umtshina we-miniRAE photoionization (PID) ngemva kokufunda ngobuchwepheshe kubacwaningi bamanyuvesi amakhulu futhi waqala uhambo lokukala ubukhona be-metham ekujuleni kwenhlabathi okuhlukahlukene amahora nezinsuku ngemuva kokufakwa.
Ngemva kweminyaka emithathu yocwaningo, ukuqoqa amasampula enhlabathi angaphezu kuka-40 athathwe ezimeni ezihlukahlukene, sithole okuguquguqukayo okuyisihlanu.
Sizibiza ngokuthi Izinsika Ezinhlanu Zokunyakaza kwe-metham emhlabathini. Le mibono emisha iyisihluthulelo sokwandisa ukusebenza kahle kokufakwa kwe-metham fumigant emhlabathini.
Ukugcinwa komswakama
Gcina umswakama ongu-80% kuyo yonke iphrofayili yenhlabathi kusukela ezinsukwini ezingama-30 ngaphambi kokufaka futhi emva kokufaka uma kungenzeka. Inhlabathi emanzi yenza kube lula ukuhamba kwama-metames, ikhuthaze ukuphefumula kwezinambuzane, futhi isiza ukugcina umkhiqizo. Uma umswakama wenhlabathi wehlela kumaphesenti angu-50 ngenxa yokushisa, umoya, noma ukunyakaza komhlabathi ngokweqile, ukufundwa kuzonyamalala phakathi namahora, hhayi izinsuku. Ngalolu lwazi, manje sesiyaqonda ukubaluleka okubalulekile kokumanzisa ngaphambili.
Isu lokubeka
Uma kuqhathaniswa namanye amafumigants, umfutho womhwamuko wemikhiqizo ye-metham uphansi kakhulu. Azisabalali kude noma ngokulinganayo njengoba labo abaye bayisebenzisa eminyakeni edlule bebecabanga. Hlola umhlabathi ukuze uqonde kangcono indawo eqondile yezinambuzane zakho. Bese ubeka kahle umkhiqizo wakho we-metam eduze kwezinambuzane eziqondiwe ngokuxubha, ukuhlubula noma ukuhlubula okujulile.
Izinsiza
Ungabukeli phansi ukulungiswa okuncane kwempahla oyisebenzisayo ukulungisa umhlabathi, ukusebenzisa umkhiqizo, futhi uhlanganise uhlelo. Kungenzeka ukukhulula inhlabathi kancane uma ungawomisi futhi ushiye umkhiqizo phezu noma eduze nendawo yomhlabathi.
Ukuphefumula kwezinambuzane
Imikhiqizo ye-Metam iphumelela kakhulu lapho imbewu yokhula, izifo kanye ne-nematode ziphefumula futhi zikhula ngaphambi kokusetshenziswa komkhiqizo. Inhlabathi eyomile kakhulu ithinta ukuphefumula kwezinambuzane. Uma ungeke ucabange ukuthi imbewu yokhula iyachuma endaweni ethile, cishe ayinjalo futhi kunzima kakhulu ukuyicindezela.
Inhlabathi
Ukunyakaza komkhiqizo kungase kukhawulwe inhlabathi eyomile, eminyene noma enenhlabathi. Gwema ukusebenzisa umkhiqizo endaweni eyiqhwa ejulile. Noma yini ongayenza ukuze inhlabathi ingomi ibalulekile.
Imiphumela yethu ibonisa ukuthi imikhiqizo ye-Metam iyasebenza njengakuqala. Akukho okushintshile ekusebenzeni komkhiqizo ngokwawo. Kodwa lapho kwenziwa izinguquko ezindleleni zokusetshenziswa, kusetshenziswa izinsika ezinhlanu njengesiqondiso, ukuthuthukiswa okubonakalayo kungenzeka. Insika ngayinye kweziyisihlanu ibaluleke kakhulu, futhi manje sinedatha yokuyisekela.