PENGARUH PUPUK N, P, K DAN PUPUK ORGANIK CAIR Azolla pinnata TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KEDELAI HITAM (Glycine max L. Merril). = THE EFFECT OF N, P, K FERTILIZERS AND Azolla pinnata LIQUID ORGANIC FERTILIZERS ON THE GROWTH AND YIELD OF BLACK SOYBEAN (Glycine max L. Merril) - ANALISA, WIDYA (2018)