Alkaline substrate pH yana darajar dalilin chlorosis na ciki shine Fe-rashi
Stevia (Stevia rebaudiana) ta sami karbuwa a matsayin madadin mai zaki saboda tana dauke da sinadarin glycosides wadanda sun ninka sau 300 na farin rake. A cikin yanayin dumi mai zafi (Yankunan USDA na 9-11), tsire-tsire ne na yau da kullun, amma ba zai shawo kan yankunan da ke cikin tsananin damuna ba kuma a waɗancan wurare, ana kula da shi kamar na shekara-shekara. Wata rukuni karkashin jagorancin Dakta David Shew na Jami'ar Jihar ta Arewacin Carolina sun gudanar da gwaje-gwaje masu yawa don yin bincike kan yadda aka yi amfani da ita azaman madadin amfanin gona. NC jihar ita ma shirin kiwo ne wanda ke haɓaka sabbin kayan gona
ya dace da yanayin zafi da zafi mai ɗimbin yawa a Kudancin Amurka
Duk tsire-tsire suna da mafi kyawun zangon pH a waje wanda tsire-tsire za su yi gwagwarmaya. A mafi girman matakan pH matakan abinci kamar Fe, manganese (Mn), tutiya (Zn), da jan ƙarfe (Cu) sun zama ba su da wadatar shuka. A mafi yawan lokuta tsire-tsire tare da ƙimar pH masu banƙyama zasu sami alamun rashin ƙarancin Fe. Ironarfe ƙarfe abu ne da ba ya motsi a cikin shuka kuma sakamakon haka ba za a iya sauya shi daga ƙananan ganyaye don saduwa da tsire-tsire da ake buƙata a cikin sabon ɓangaren tsire-tsire masu tasowa.
Don haka, yayin yunƙurin tantance ƙarancin Fe yana da mahimmanci a yi lissafin wurin da alamomin suke don taimakawa kawar da wasu ƙarancin abinci mai gina jiki. A wannan yanayin na stevia, tsire-tsire na sama suna nuna rawaya da tsaka-tsakin chlorosis (Fig. 3). Ta haka ne, tare da
haɗuwa da yanayin bayyanar cutar, kuma alkalin alkaline pH yana darajar dalilin chlorosis ta tsakiya shine ƙarancin Fe saboda ƙananan matakan pH.
Karanta cikakken labarin a www.e-gro.org.