Ososayensi abavela eCabi, e-University of Wageningen naseZari Research Institute, kanye nombhali oholayo uLena Ranger Globallen, lapho izici zithinta ukubukeka nokusatshalaliswa kwama-paritoids ama-scoops eZambia abhekwayo.
Ukutholwa kwabo kuletha izindaba eziqondile zezinhlelo zokulawula ngokwezemvelo, ngoba imiphumela ibonisa amandla okwandisa inani labantu bendawo yezitha zemvelo ze-corn decious scoop (i-worm)). Futhi-ke, kunezindlela eziphephile nezisebenzayo zokulwa nezilokazane ukuthi abalimi abancane abangazisebenzisa ezitshalweni zabo.
Izinhlobo zezihlaseli ezihlaselayo zivame ukufika endaweni entsha ngaphandle kwezitha zemvelo zendawo futhi, ngaleyo ndlela, ukunwebeka ngokukhululeka, ukudala usongo kubalimi abampofu emazweni aphansi naphakathi nendawo.
I-Corn Corn Scoop evumayo, isiloka esihlaselayo sezilimo, esihlala enyakatho naseNingizimu Melika, safika e-Afrika ngonyaka we-2016 futhi selokhu sabangela ukulimala okukhulu kwamanye amazwe ezwenikazi lonke. Isibonelo, abalimi bemimbila balahlekelwa yisilinganiso esingu-26,6% eGhana kwathi abangama-35% eZambia ngenxa yalesi sinambuzane.
Kungakho ukuqonda kwe-biocontrol kubalulekile. Kulokhu, iqembu labaphenyi ngaphansi kobuholi bukaCabi basebenza umsebenzi ukuze bakhombe ama-parasitoids endawo ahlasela "umxha wamandla" eZambia. Babegibela amaqanda nezibungu ze-scop ngesikhathi somjikelezo wesivuno sommbila ngenkathi yemvula yango-2018-2019 ezindaweni ezine eLusaka naseSifundazweni esiseCentral seZambia ukuthola ama-parasitoids.
Sekukonke, ama-larvae angama-4373 namaqanda ayi-162 aqoqiwe. Kusayithi ngalinye nosuku lokuqoqwa, amanani okuvuna alotshwayo, inani lezitshalo ezifakazelwe kanye nenani lomonakalo wokuhlaziya ukuthi yiziphi izici ezichaza kangcono ukubonakala kwesitha semvelo esikubi. Ososayensi bathole ukuthi ngokuvamile izinga lokuhlaselwa kwezithelo ezivela ezitheni zemvelo endaweni ngayinye liyahluka kusuka ku-8.45.111%.
Bakhombe izinhlobo eziyi-12 ezahlukahlukene zama-parasitoids nezinto ezithinta ukubukeka kwama-parasitoids. Ngenxa yalokho, izici ezi-4 eziphambili zabelwa:
- Indawo Yensimu
- Isigaba sokukhula kommbila,
- Ubuningi be-Pest
- Isigaba samanzi seLichwater.
Ukutholwa okungalindelekile kwakuwushintsho ekumeni kwe-parasitoids ngesikhathi somjikelezo wokukhula kommbila. Ngesikhathi sezigaba zokugcina zokuvuthwa kommbila (amaqabunga ayi-11-12, zishiya zikhonkotha), ukuvela kanye nenombolo yama-parasitoids ancipha.
Ucwaningo lukhombisa ukubaluleka kokuqonda izici zesikhala nesikhathi ngenxa yokusungulwa kwezitha zemvelo zendawo. Kuyiqiniso ikakhulukazi ekusebenziseni ukulawulwa kwemvelo kanye nokuthuthukiswa kwezindlela ezifika ngesikhathi zokulwa nezigaba ezithile zezinambuzane ukuze kukhuphule izindawo ezihambelana nalezi zigameko kanye nokuhamba kwazo ezindaweni zezitshalo zezolimo e-Afrika.
Kudingeka ucwaningo olulandelayo ukunquma uhlobo olunembile lwe-parasitide, ngokwesibonelo, ngokukhonjwa kwamangqamuzana nokuziphatha okuhle, noma kunjalo, isinyathelo sokuqala nesibalulekile phambili ekulweni nenye yezinambuzane eziyingozi kakhulu ezisongela ikusasa labalimi base-Afrika.
(Umthombo nesithombe: Izindaba.AgROPALES.com).