PRODUKTIVITAS TANAMAN GAMAL (Gliricidia sepium) DAN INDIGOFERA (Indigofera zollingeriana) YANG DIBERI BERBAGAI DOSIS PUPUK BIOORGANIK
Abstrak
Penelitian ini bertujuan untuk mendapatkan kajian tentang produktivitas tanaman gamal (Gliricidia sepium) dan indigofera (Indigofera zollingeriana) yang diberi berbagai dosis pupuk bioorganik. Penelitian ini menggunakan rancangan acak lengkap pola faktorial dua faktor yaitu faktor pertama adalah jenis tanaman (G = Gamal; I = Indigofera) dan faktor kedua adalah dosis pupuk bioorganik yaitu D0 = tanpa pupuk; D1 = 5 ton ha-1; D2= 10 ton ha-1; D3= 15 ton ha-1; D4= 20 ton ha-1; D5= 25 ton ha-1; dan D6= 30 ton ha-1, sehingga terdapat 14 kombinasi perlakuan. Setiap perlakuan diulang 3 kali sehingga terdapat 42 unit percobaan. Hasil penelitian menunjukkan bahwa produktivitas tanaman indigofera nyata (P<0,05) lebih tinggi dibandingkan dengan gamal. Pemberian pupuk bioorganik secara nyata (P<0,05) meningkatkan tinggi tanaman, jumlah daun, berat kering daun, berat kering batang, berat kering total hijauan, jumlah khlorofil, dan luas daun per pot, dan hasil tertinggi terjadi pada dosis 30 ton/ha. Interakasi terjadi (P<0,05) pada luas daun per pot. Berdasarkan hasil penelitian dapat disimpulkan bahwa produktivitas tanaman indigofera (Indigofera zollingeriana) lebih tinggi dibandingkan gamal (Gliricidia sepium), pemberian pupuk bioorganik meningktkan produktivitas tanaman dengan hasil tertinggi terjadi pada dosis 30 ton/ha, dan interaksi terjadi pada luas daun per pot.
Kata kunci: Indigofera, gamal, dosis pupuk, pupuk bioorganik
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