BEIJING, Nov 7 (Reuters) - China's commerce ministry said on Tuesday it has granted conditional regulatory approval to the proposed $25 billion merger between fertiliser companies Agrium Inc AGU.TO and Potash Corp of Saskatchewan Inc PTO.TO . ministry, in a statement, said the merged entity should divest some assets including those in Israel and Chile. The merged entity also cannot acquire stakes in industry competitors for five years without regulatory approval, it added.