Existing of Vesicular Arbuscular Mycorrhizal on The Corn Field Subjected by Long-term Organic and Inorganic Fertilizers
2009
Yusnaini
The existing of vesicular arbuscular mycorrhizal fungi was determined in continuously cropping systems which had applied by organic and/or inorganic fertilizers for a long term (4 years) application of corn and upland rice rotation. The experiment was established at Taman Bogo, Probolinggo sub-district, East Lampung district. The experiment were: control (without fertilizer), 20 Mg ha-1 chicken manure (CK), 20 Mg ha-1 green manure Glyricidium sp. (GM), 100 % inorganic fertilizers (IF) (urea 300 kg ha-1, SP 36 200 kg ha-1, and KCl 100 kg ha-1), 50% CK + 50% IF, 50% GM + 50% IF, 75% CK + 25% IF, and 75% GM + 25% IF. Soil samples were taken at the first corn growing season (2001) and the eight corn growing season (2004). VAM fungi spores were examined by wet sieving methods. The results showed that application of chicken manure or its combination with inorganic fertilizers had higher VAM fungi spore. The dominant species of VAM fungi at all treatment was Glomus constrictum.
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