Abstract
The study determines the effect of arbuscular mycorrhiza fungi (AMF) and organic fertilizer on sunflower growth (Helianthus annuus L.) in former iron ore mine in Lhoong, Aceh Besar. The Randomized block design is 2×3 factorial with 4 replications was used. The first factor: Without Mycorrhiza and Mixed Mycorrhiza. The second factors were Without Fertilizer, Manure, and Guano. The results showed that at α = 5% variation analysis, AMF had very significant effect on plant height in 10 d After Planting (DAP), leaf number 50 DAP, fresh weight of top-trimmed, and AMF colonized roots. Furthermore, it showed a significant effect on plant height 40 and 50 DAP, leaf number 20, 40 DAP and dry weight of top-trimmed. Fertilizer were significantly affected on plant height in 10 and 20 DAP, leaf number 50 DAP and fresh/dry weight of the top-trimmed. It showed a significant effect on plant height 30 DAP and leaf number 40 DAP. Mixed Mycorrhiza and Guano showed the best results. The interaction between AMF and fertilizer had a significant effect on plant height at 50 DAP and fresh weight of the top-trimmed. Mixed Mycorrhiza and Manure showed the best results on 50 DAP with increasing in plant height, while Mixed mycorrhiza and Guano increased fresh weight of the top-trimmed.Keywords: arbuscular mycorrhiza fungi (AMF), Helianthus annuus L., critical land, organic fertilizer, sunflower growth.
Highlights
Land degradation is a process where the value of the biophysical environment is influenced by one or more combinations of human action processes to the soil [1]
Plant height The result of variance analysis (F test) showed that arbuscular mycorrhiza fungi (AMF) was very significant at 10 d After Planting (DAP), not significant at 20 and 30 DAP, and had a significant effect on 40 and 50 DAP on plant height
Provision of AMF and organic fertilizer have significantly affect to the growth of sunflower plants on the critical land of the former iron ore mine in Lhoong - Aceh Besar
Summary
Land degradation is a process where the value of the biophysical environment is influenced by one or more combinations of human action processes to the soil [1]. Based on the study of the potential of AMF, organic fertilizer and sunflower benefits are quite promising, the authors tried to use mycorrhiza and organic fertilizer to see how the effect of AMF and organic fertilizer on the growth of sunflower plants on critical land of former iron ore mine and this research is expected to help increasing growth of sunflower on such land in Lhoong Aceh Besar. The second factor is organic fertilizer with a dose of 30 ton ha-1 or equivalent to 150 g of polybag-1, consisting of 3 types, namely: P0 = Non-fertilizer, P1 = Manure, P2 = Guano From these two factors, there were 6 treatment combinations and each treatment combination was repeated 4 times to 24 units of the experiment.
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