PENINGKATAN HASIL DAN NILAI NUTRISI RUMPUT KUMPAI (Hymenachne amplexicaulis (Rudge) Nees.) DENGAN FUNGI MIKORIZA ARBUSKULA DAN PUPUK ORGANIK DI TANAH PODZOLIK MERAH KUNING
Abstrak
Fungi mikoriza arbuskula (FMA) dapat membantu tanaman untuk penyediaan dan penyerapan unsur P yang rendah ketersediaannya pada tanah masam. Pupuk organik dapat memberikan pengaruh terhadap sifat fisik, kimia dan biologis tanah. Tujuan penelitian ini adalah untuk mempelajari dan mengetahui pengaruh FMA dan pupuk organik terhadap peningkatan hasil dan nilai nutrisi rumput kumpai di tanah masam podzolik merah kuning. Penelitian menggunakan rancangan acak lengkap pola faktorial 5×3 dan ulangan tiga kali. Dua faktor sebagai perlakuan yaitu FMA dan pupuk organik. FMA terdiri dari tiga taraf: 0 g/pot, 10 g/pot dan 20 g/pot. Pupuk organik terdiri dari lima taraf: 0%, 50% pupuk kandang sapi, 100% pupuk kandangsapi, 50% pupuk kompos dan 100% pupuk kompos. Peubah yang diamati adalah panjang daun, lebar daun, panjang tanaman, jumlah anakan, jumlah daun, produksi bahan kering hijauan, berat kering akar, protein kasar, kandungan fosfor, kecernaan bahan kering dan kecernaan bahan organik in-vitro. Hasil penelitian menunjukkan bahwa pemberian FMA dan pupuk organik berpengaruh sangat nyata (P<0.01) terhadap semua peubah yang diamati. Sedangkan interaksi FMA dan pupuk organik berpengaruh sangat nyata terhadap berat kering akar, protein kasar, kandungan fosfor dan kecernaan bahan organik.
Kata kunci: Hymenache amplexicaulis (Rudge) Nees., fungi mikoriza arbuskula, pupuk organik, hasil dan nilai nutrisi.
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