Kucetyiswa ukuba abalimi be-canola basebenzise izixhobo zokulawula ukukhula kwezityalo (ii-PGR) kwizityalo ze-canola ezikhula ngokukhawuleza ukuze kwandiswe isivuno kunye nozinzo lwezityalo.
Kule ntwasahlobo, izityalo azifani ngobukhulu kuphela, kodwa nakwizigaba zophuhliso: ukusuka kwizityalo ezinamagqabi amathandathu okwenyani ukuya kwizityalo ezinee-cotyledons kuphela.
Ngoko ke, ulawulo luya kuba nzima ngakumbi kwaye luya kufuna indlela ethile kwindawo ethile,” utshilo uNigel Scott, umphathi wezobuchwepheshe wengingqi eProcam.
Nangona abalimi bengathandi ukutyala imali, abanye baphoswe yisivuno esikhulu ehlotyeni elidlulileyo ngenxa yokunqongophala kotyalo-mali kunye nesivuno esibi kwixesha elidlulileyo.
Kutheni ke ngoko iingcali zezolimo zixela isivuno esingangqinelaniyo kangaka? Xa ejonga emva kwiminyaka elishumi edlulileyo, uNigel uthi umhla oqhelekileyo wokuhlwayela yiveki yesithathu ka-Agasti.
Nangona kunjalo, ngenxa yosongelo oluvela kwiincukuthu zekhaphetshu, imihla yokuhlwayela isusiwe kwangethuba okanye yahlehliswa ukuze kuthintelwe imeko apho isityalo sikwinqanaba le-cotyledon xa kuvela iincukuthu ezindala ekupheleni kuka-Agasti.
Kulo nyaka, ukuhlwayela kugqitywe kwangethuba kwezinye iindawo. Wakhomba kwisithili sakhe, iDurham, apho, njengezinye iindawo zaseNgilani, ukuvuna kugqitywe ngaphambi kwexesha elicwangcisiweyo.
Izityalo ezifumana amanzi zikhula ngokukhawuleza. Nangona kunjalo, kwiindawo apho kunqongophala khona amanzi okanye umhlaba owomileyo, ixesha lokuhluma liyakhula.
Ngoko ke, ukukhula kwesityalo kuyahluka ngokuxhomekeke ekufumanekeni kwamanzi; ezinye izityalo zikhula amagqabi okwenyani amane, amahlanu, okanye amathandathu, ngelixa ezinye zikhula ii-cotyledons kuphela.
Inxalenye yokugqibela yezityalo ezityalwe emva kokufuduka kukaSeptemba ukuza kuthi ga ngoku ivelise igqabi elinye lokwenyani. Okuxhalabisayo kukuba uNigel uqalile ukuqaphela inani elikhulu lezinambuzane ezindala.
“Ngoko ke, nakwintsimi enye, sibone izityalo zikwizigaba ezintathu ezahlukeneyo zokukhula.”
Kwizityalo ezivuthwa kwangoko, abalimi bakhe baceba ukusebenzisa izixhobo zokulawula ukukhula kwezityalo—into abangazange bayenze ixesha elide.
Uqaphele ukuba abalimi kufuneka basebenzise abalawuli bokukhula kwezityalo (ii-PGR) ngoku ukuze basebenze kakuhle ngaphambi kokuba kube kade.
Eyona ndlela ifanelekileyo, esi sichumisi kufuneka sisetyenziswe xa isityalo sinamagqabi amane ukuya kwamathandathu okwenyani (phakathi ku-Okthobha). Abalawuli bokukhula banokuthintela ukukhula kweendawo ezingaphezulu komhlaba kwaye bakhuthaze ukuhluma kweengcambu (jonga umzobo).
Oku kuchazwa kukuba xa i-petiole inde, umngcipheko wokuba isifo sisasazeke esiqwini uyancipha.
"Le ngxaki idla ngokuvela kwiindawo ezincinci ezinyangiweyo ngemithi yokubola efana ne-difenoconazole."
Okokugqibela, ucebise ukuba kufakwe isichumiso kwizityalo ezikhula kancinci kuba amaqondo obushushu omhlaba aya kwehla kwaye kuya kufuneka ziqokelele i-biomass ukulungiselela ubusika.
"Kwanezityalo ezivuthiweyo zifuna izondlo ezithile, ingakumbi i-manganese kunye ne-boron, ukuze zivelise isivuno esiphezulu."
Enye yeengxaki eziphambili kweli hlobo lokwindla kukufumanisa ixesha elifanelekileyo lokusebenzisa i-clethodim ukulawula ukhula, ngenxa yeentlobo ngeentlobo zezityalo ezikhulisweyo.
Ukufaka izibulali-zinambuzane ngexesha kuyinselele kuba kunokonakalisa iindawo ezinkulu zezityalo. “Ngenxa yoko, abalimi kufuneka banikele ingqalelo engakumbi kwixesha lokufaka,” utshilo uNigel.
Ukwacebisa ukuba ukwanda kwamanqanaba e-nitrogen aseleyo emhlabeni ngenxa yembalela yasehlotyeni kukhuthaze ukukhula kwezityalo. Ukunyuka kwamaqondo obushushu omhlaba kuthetha ukwanda kweeminerali.
"I-Buckwheat ikhula ibe nde kune-rapeseed, kwaye ngenxa yokhuphiswano phakathi kwezityalo, ikwathatha indawo ye-rapeseed. Ngaphandle kwe-buckwheat, i-rapeseed ibingayi kukhula ibe nde kangaka."
Ixesha lokuthumela: Matshi-09-2026