Influence of Arbuscular Mycorrhizal Fungi, Green Manure of Leucaena leucocephala and Gliricidia sepium on the Yield of White Yam (Dioscorea rotundata) and Soil Bioremediation in the Abandoned Quarry Influence of Arbuscular Mycorrhizal Fungi, Green Manure of Leucaena leucocephala and Gliricidia sepium on the Yield of White Yam (Dioscorea rotundata) and Soil Bioremediation in the Abandoned Quarry

Abstract

White yam (Dioscorea rotundata) was planted in the abandoned quarry to determine the growth and yield effects of mycorrhizal fungi, green manure, and other soil amendments. Seed yams were planted on the heaps (1 m × 1 m) in three replicates and three blocks. Data collected were analyzed using analysis of variance and Duncan multiple range test. The results showed that Glomus mosseae, Glomus etunicatum, green manure of Gliricidia sepium (GS), poultry manure, and NPK fertilizer influence yam’s shoot, root, and tuber weights. It was further observed that the combined treatments of GS and Leucaena leucocephala had better enhancement of growth and yield characters of yam. Biofertilizers together with plant and animal remains are therefore recommended for the bioremediation of quarry and other areas affected by natural, human, or ecological activities.