Intomologists kubva kuYunivhesiti yeBrazil Durados muBrazil akawana iyo yakatarisa inokwezva inokwezva kana yakasanganiswa zvidiki zvezvipembenene zvepfuma
Izvi zvakaderedza kukuvara kunokonzerwa nekudyara chibage pamasaiti ese masere emasere muMata Grosu-du-sul, mune yekurima rechitunha serraado muBrazil.
Kurwira kweiyo Corn Decrious Scoop (Spodoptera Frugiperda) iri kuwedzera kuoma nekuda kwekuwedzera kwekutadza kwechikepe uye genetically yakagadziridzwa bacillus turirirtiesis (BT) zvidyarwa.
Muchidzidzo ichi, iyo nzira yakazara yakaedzwa nekupuruzira iyo inokwezva Nocttovi ®c metomyl chipembenene.
Kuedza kwakaitwa pamatanda ekutengesa minda, pane tsika dzisina bt uye bt miviri yemakore ekurima (2018 uye 2019) pamasangano masere ari kumaodzanyemba kweMatu Grosu ita Sul, Brazil.
Izvi zvinotevera zvipembenene zvipembenene zvekupembedza zvakashandiswa: kupfira mitsetse inoenderera ichingoita zana nemakumi mashanu, makumi maviri nemashanu. Nguva nenguva kupfira machena makumi maviri nemashanu; kutonga (pasina kushandisa kwesplecicides); uye kupfira iyo nzvimbo yese yekupfeka zvipembenene (kutonga kwakanaka).
Chikafu Chekudya chakabatana neyekupararira morekuru akaiswa kune zvirimwa pamatanho emichero V1 naV3, uye hukuru hwehuwandu hwevanhu vakuru hwakafungidzirwa uye huwandu hwekukuvara kwemashizha zvinokonzerwa nemhombwe.
Kushandiswa kwehupfu bait ine mitsetse ine nguva yakaderera pane kana yakaenzana ne50 m zvakanyanya kuderedza chikamu chekukuvara kwezvirimwa, uye mhedzisiro yacho yakasimba yezvirimwa BT.
Masayendisiti anotenda kuti kutonga kwevakuru kweiyo chigaro chezviyo kunogona kunge kuri nani kana nzira dzekutadza zvinhu zvakarongeka, kuitira kuti urege kukohwa kwechipiri kwekukohwa kweBrazil neanopfuura 90%.
Iyo inokwezva yakapihwa neiyo nharaunda Agrotechnical kambani isca, Inc., United States, iyo Inoshandisa Simba rePheromones uye zvimwe zvezvimwe zvezvemari zvakavanzika nezvirimwa nezvirimwa uye mhuka izvo Shandisa maitiro emhando dzakanangiswa zvipembenene.
Isca yakagadzira uye inogadzira iyi nocttovi chigadzirwa kugovera upl muBrazil.
(Kunobva: www.Czitay.com).