Impact of Crush Rock Mining on Soil Enzyme Activities and Nutritional Composition of Ipomea batata in Okue-Ishiagu, Ebonyi State, Nigeria Nwenewo Eugenia Chidinma¹, Ndukwe Ijeoma Franca², Egede Solomon Chinedu³, Agbom Chukwuka⁴ and Nwokporo Ifeanyi Emmanuel⁵. 1,2,4,5...