I-Stevia (i-Stevia rebaudiana) isithole ukuduma njengenye indlela yobumnandi ngenxa yokuthi iqukethe ama-glycoside anobumnandi obuphindwe izikhathi ezingama-300 kunoshukela umoba. Ezindaweni ezishisayo (i-USDA zones 9-11), iyimifino engapheli, kodwa ngeke idlule ubusika ezindaweni ezinobusika obunzima kakhulu futhi kulezo zindawo, iphathwa njengonyaka. Iqembu eliholwa uDkt. David Shew waseNorth Carolina State University lenze izivivinyo ezibanzi ukuze liphenye ukusetshenziswa kwalo njengenye isitshalo. I-NC State futhi uhlelo lokuzalanisa oluthuthukisa izinhlobo ezintsha zezitshalo
ifanele izimo zasehlobo ezishisayo nezinomswakama ezivame kakhulu e-Southern US
Zonke izitshalo zinebanga elifanele le-pH ngaphandle kwalokho izitshalo ezizozabalaza. Emazingeni aphezulu e-pH ye-substrate imisoco efana ne-Fe, i-manganese (Mn), i-zinc (Zn), ne-copper (Cu) iba kancane esitshalweni. Ezimweni eziningi izitshalo ezinamavelu e-pH aphezulu ngokungavamile zizoba nezimpawu zokushoda kwe-Fe. I-ayoni iyinto enganyakazi esitshalweni futhi ngenxa yalokho ayikwazi ukususwa emaqabunga aphansi ukuze ihlangabezane nezidingo zezitshalo ezingxenyeni ezintsha ezikhulayo zesitshalo.
Ngakho-ke, lapho uzama ukuxilonga ukuntula kwe-Fe kubalulekile ukulandisa ngendawo ye-symptomology ukusiza ukuqeda okunye ukushoda kwezakhi. Kulesi simo se-stevia, izingxenye ezingenhla zezitshalo zibonisa i-chlorosis ephuzi kanye ne-interveinal (Fig. 3). Ngakho, nge
inhlanganisela yendawo enezimpawu, kanye ne-alkaline substrate pH ixabisa imbangela ye-intervein chlorosis ukuntuleka kwe-Fe ngenxa yamazinga aphezulu e-pH engaphansi.
Funda isihloko esiphelele ku-www.e-gro.org.