Center Pivot Case Study - South Africa Gerrit Burger, Haifa South Africa Agronomist interviews Steve Broad, a potato grower in South Africa... 38% increasing in potato yield with Multi-K Mg The Multi-K™ Mg treatment outperformed the existing side dressing practice in all areas measured... Time and method of fertilizer application for potatoes Abstract: 1977 Dahnke , et al. reported on the results of 17 soil fertility field trials with...