Ama-Irises ngokuvamile awathobeki, ngakho-ke ayabonakala cishe kuzo zonke izindawo. Kodwa-ke, lezi zinambuzane ezinhle zezimbali azithandi ukwedlula abalimi. Enye yezinambuzane ezinonya ngale ndlela i-iris fly. Noma incane, yenza umonakalo omningi, futhi okubaluleke kakhulu, uma impukane ingatholakali futhi ichithwa ngesikhathi, kuzoba nzima kakhulu ukuyiqeda, ngoba minyaka yonke kuba nezinye izinambuzane ezinjengalezi.
Ukuqonda kanjani ukuthi impukane ixazululwe ku-irises?
Izinsuku ezifudumele zasentwasahlobo azigcini nje ngokuqhakaza izimbali zokuqala. Kwakungalesi sikhathi, lapho ama-buds esevele esakhekile emithini, futhi kwavela impukane ye-iris, yangaphandle efana ncamashi nalena ejwayelekile. Ekuqaleni kukaMeyi, ungena esihlahleni futhi uhlala lapho kuze kube yilapho esedla, edla amantshontsho amancane, angahlulwa.
Ezincwadini zesayensi, lesi sinambuzane singatholakala ngaphansi kwegama "intombazane yezimbali ye-iris", ehambisana ngokuphelele nemvelo yayo.
Isinambuzane sishiya ihlumela ngemuva kokubeka amaqanda lapho. Ngokuhamba kwesikhathi, kuvela izibungu ezincane, ezimhlophe-eziluhlaza okwesibhakabhaka kubo, "ezidla" ihlumela kusuka ngaphakathi. Ngakho-ke, ama-inflorescence ayofuna ngisho esigabeni sokuhluma, angavuli: ayoma ngaphandle, abole ngaphakathi.
Umzuzu ongathandeki kakhulu ukuthi kusukela ihlumela lezi zibungu ziwele phansi ngaphansi kwesihlahla, lapho zibusika khona kahle, ziphuze, futhi izimpukane ezisentwasahlobo ezilandelayo zihlasela irises futhi. Uma ungawephuli lo mbuthano onesihluku, ukugeleza kwama-irises ngeke kubonwe nhlobo.
Ungacubungula kanjani ama-irises avela ku-iris fly?
Ukususa inkathazo, kubalulekile ekuqaleni kwentwasahlobo ukwenza ukwelashwa kwezitshalo ngama-insecticides:
- fafaza irises ngokwayo;
- chitha umhlabathi ngaphansi kwesihlahla.
Izidakamizwa ezinjenge-Aktara, BI-58, Confidor, Mosplan zibonakalise ukuthi zilungile impela ekulweni neflaya.
Okwesibili izimbali ziphathwa kakade ngemuva kokubonakala kwama-peduncle, kodwa ngaphambi kokuba ama-buds adwetshwe. Futhi uma kusala izimpukane ezimbalwa, lawo ma-buds lapho lihlala khona futhi lalela amaqanda kufanele akhethwe futhi ashiswe. Lokhu kuzosiza ukuvikela ukuvela kwesizukulwane esisha.
