Matangi madiki emvura nitrogen anotamba basa rakakosha muminda yakawanda nekuda kweiyo yakanakisa yakaderera-tembiricha yekudzokorora kugona uye kutakurika.
Kunyatsogadzirirwa masampulogical samples anofanirwa kuchengetwa nguva dzose, anotakurika kuchengetedza mitezo chidiki diki, inoshanda yemvura nitrogen nitrogen tangi.
