Abstract
Arbuscular mycorrhizal fungi (FMA) may help the plant for the provision and absorption of P element where as the availability is low in acid soils. Organic fertilizers will affect to the physical, chemical and biological properties of the soil. The purpose of this study was to find out and prove that improvements in ultisol fertility by giving FMA and organic fertilizer will affect the fiber content of kumpai grass. The experiment used a Randomized Block Design with five treatments and 4 replications. The treatments were consisted of: 1) FMA 0 g / pot + organic fertilizer 0%, 2) FMA 20 g / pot + organic fertilizer 50% cow dung, 3) FMA 20 g / po t+ 100% cow manure, 4) FMA 20 g / pot + 50% compost, and 5) FMA 20 g / pot + 100% compost. The observed variables were NDF, ADF, hemicellulose, cellulose and lignin content. The results showed that the treatment had significant effect on all observed variables.
 Keywords: Hymenache amplexicaulis (Rudge) Nees, fiber fraction, arbuscular mycorrhizal fungi, organicfertilizer
Highlights
Arbuscular mycorrhizal fungi (FMA) may help the plant for the provision and absorption of P element where as the availability is low in acid soils
The results showed that the treatment had significant effect on all observed variables
Peranan pupuk organik untuk keberhasilan pertumbuhan tanaman pakan rumput poliploid pada tanah masam dan salin
Summary
Dilanjutkan dengan analisis fraksi serat hijauan (NDF, ADF, Hemiselulosa, Selulosa dan Lignin) di laboratorium Nutrisi Ruminansia Fakultas Peternakan Universitas Andalas. FMA jenis multiple spora dengan merk dagang Cemiko I yang terdiri dari (Glomus sp, Acaulospora sp dan Scutellospora sp,) diperoleh dari laboratorium Ilmu Tanah Fakultas Pertanian Universitas Andalas. Sebagai pupuk dasar digunakan TSP, KCl, CO(NH2). Peralatan yang digunakan adalah peralatan pengolah tanah, mistar, alat penyiram, kantong plastik, timbangan, polybag, dan peralatan laboratorium untuk analisa fraksi serat hijauan. Pupuk dasar TSP, KCl, dan pupuk organik diberikan secara bersamaan, dengan cara ditebar di tanah dalam petak percobaan, kemudian diaduk menggunakan alat garu agar lebih homogen, dan dibiarkan selama seminggu sampai saat penanaman. Pengolahan data dilakukan menggunakan analisis keragaman untuk mengetahui pengaruh perlakuan terhadap peubah yang diamati. Perlakuan yang berpengaruh nyata dilanjutkan dengan uji jarak berganda Duncan
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