KEBERGANTUNGAN MANGGIS (Garcinia mangostana L.) TERHADAP CENDAWAN MIKORIZA ARBUSKULAR DAN PUPUK FOSFAT DI LAPANG (Mycorrhizal dependency of Mangosteen under field to Applicated Phosphate Fertilizer)

Syarif , Auzar (2010) KEBERGANTUNGAN MANGGIS (Garcinia mangostana L.) TERHADAP CENDAWAN MIKORIZA ARBUSKULAR DAN PUPUK FOSFAT DI LAPANG (Mycorrhizal dependency of Mangosteen under field to Applicated Phosphate Fertilizer). Jurnal Stigma, XIII (2). ISSN 0853-3776

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Abstract

The field experiment was conducted to evaluate the mycorrhizal dependency of mangosteen to applicated phosphate fertilizer from Januari 2000 until April 2001 in the experimental field of Andalas University Padang. The experiment was to evaluate two arbuscular mycorrhizal fungi species (Glomus etunicatum and Glomus manihotis, and control) and four dosages of phosphate fertilizer (0, 150, 300, and 450 mg plant-1 month-1). The experimental design were Randomized Blocks Design in factorial pattern with three replications. The results of the experiments showed that (1) the maximum infection levels of Glomus etunicatum, Glomus manihotis, and control on roots of 16 months mangosteen were 68.53, 64.34, and 57.99 percent at the optimum dosages of phosphate fertilizer 70.26, 288.18, and 265.49 mg plant-1 month-1 (2) total dry weight of mangosteen inoculated with Glomus etunicatum, Glomus manihotis, and control were 9.13, 8.58, and 7.64 g plant-1 at the optimum dosages of 243.02, 421.99, and 863.82 mg plant-1 month-1 phosphorus fertilizer respectively (3) Mycorrhizal dependency of mangosteen under field was highest at the dosage on 150 mg P plant-1 month-1 for Glomus etunicatum and 450 mg P plant-1 month-1 for Glomus manihotis. Key words: mangosteen, mycorrhizal, phosphate

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