Dampak Aplikasi Fungsisida Perlakuan Benih Jagung Terhadap Kelimpahan Nematoda dan Artropoda Tanah
AbstrakThe objectives of this research were to study the effect of application of fungicide as a seed treatment of corn on soil nematodes and arthropods. The fungicide test as seed treatment with dosage of 5 g in 1 Â kg of corn seed. Four corns that were planted in polybag with capacity 5 kg of soil were set as experimental unit, and they were arrange in randomize block experimental designed with 3 block as replications. The treatments of this experiment were four fungicides with different active ingredient namely Fenamidone, Metalaxsil, Propiconazole, and Dimethomorph and one check with no fungicide. Disturb soil samples for nematode extraction and undisturb soil in ring soil sampler for arthropod extraction were taken from the polybag when corn was 40 days old after planting. Nematodes were extracted by sieving and centrifugation with sugar solution methods, while arthropods were extracted by Berlese funnel extractor under one week incubation. Nematode was grouped into feeding groups and arthropod into order taxonomyc groups. The analysis of variance procedure was applied to the data of nematodes and arthropods abundance and their mean difference was test by Least Significant Difference (LSD) with 5% of significantly level. The results showed that the effect of fungicide application as a seed treatment of corn was varied. Â Application of Metalaxil and Propiconazole tend to suppress the abundance of plant parasitic nematodes, but not for the free living groups, while the other fungicides test was not significantly affected to both of plant parasitic and free living nematodes groups. All of test fungicides were significantly suppress the abundance of Acarina, but not for Collembola and others arthropods abundance.Â Â Key words: seed treatment, corn, soil organismÂ Â
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