PENGARUH JARAK TANAM DAN DOSIS PUPUK KANDANG AYAM TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KENTANG ( Solanum tuberosum L.) VARIETAS GRANOLA THE EFFECT OF PLANT SPACING AND CHICKEN MANURE OF DOSAGE ON GROWTH AND YIELD OF POTATO PLANT (Solanum tuberosum L. - Fatkur, Fatkur (Agrineḉa, 2013)