Abstract
In Croatia a three years preliminary research has already been conducted to explore the possibilities of sweet potato (Ipomoea batatas) cultivation and introduction into our growing areas. Positive effects on the yield were expected from the endomycorrhiza application according to the new growing technologies close to organic-biological production, as well as from mulching with differently colored polyethylene (PE) films. Arbuscular mycorrhizal (AM) fungus Glomus mossae was used as inoculants. A significant positive effect of mycorrhiza on the yield of sweet potato roots, as well as on the average root mass, however not on the number of roots per plant, was recorded. PE mulching had a significant effect on the yield and average root mass, as well. Interaction AM × PE film provided the significantly highest yield of thick toots per plant.
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