RESPON PERTUMBUHAN DAN PRODUKSI TANAMAN BENGKUANG TERHADAP PEMBERIAN PUPUK KANDANG DAN PUPUK KALIUM

This study aimed to determine the manure and potassium fertilizers and the interaction between the two factors on the growth and yield of jicama. The design used was Group Random Design (GRD) factorial pattern 3x3 with 3 replications, there were two factors examined, namely (1) manure (P) consisting of 3 levels, namely: P1 (8 tons/ha), P2 ( 13tons/ha), P3 (18tons/ha) ; (2) potassium fertilizer (K) consists of 3 levels ,namely :K1 (137kg/ha), K2 (187kg/ha), K3 (237kg/ha). The parameters observed in this study were : length plant at 15, 30, 45 dap, stem diameter at 15, 30, 45 days after planting, diameter and weight tuber. The results showed that the dosage of manure had a very significant effect on plant length at 45 days after planting, had no significant effect on length plant at 15 and 30 days after planting, stem diameter at 15, 30.45 days after planting, diameter and weight tuber. Potassium fertilizer dose had not significant effect on length plant at 15, 30, 45 days after planting, stem diameter at 15, 30, 45 days after planting, diameter and weight tuber. There was not significant inter action between manure and potassium fertilizers on the length plants at 15, 30, 45 days after planting, stem diameter at 15, 30, 45 days after planting, diameter and weight tuber.Penelitian ini bertujuan untuk mengetahui respon tanaman bengkuang terhadap pertumbuhan dan hasil akibat pemberian pupuk kandang dan pupuk kalium serta interaksi antara kedua faktor tersebut. Rancangan yang digunakan adalah Rancangan Acak Kelompok (RAK) pola faktorial 3x3dengan 3 ulangan, ada dua faktor yang diteliti yaitu, (1) pupuk kandang (P) terdiri dari 3 taraf yaitu: P1 (8 ton/ha), P2 (13 ton/ha), P3 (18 ton/ha); (2) pupuk kalium (K) terdiri dari 3 taraf yaitu: K1 (137 kg/ha), K2 (187 kg/ha), K3 (237 kg/ha). Parameter yang diamati meliputi panjang tanaman, diameter batang umur 15, 30, 45 hst, diameter dan berat umbi. Hasil penelitian menunjukkan bahwa dosis pupuk kandang berpengaruh sangat nyata terhadap panjang tanaman pada umur 45 hst, berpengaruh tidak nyata terhadap panjang tanaman pada umur 15 dan 30 hst, diameter batang pada umur 15, 30, 45 hst, diameter dan berat umbi. Dosis pupuk kalium berpengaruh tidak nyata terhadap panjang tanaman pada umur 15, 30, 45 hst, diameter batang pada umur 15, 30, 45 hst, diameter dan berat umbi. Tidak terdapat interaksi yang nyata antara pupuk kandang dan pupuk kalium terhadap panjang tanaman pada umur 15, 30, 45 hst, diameter batang pada umur 15, 30, 45 hst, diameter dan berat umbi