The combination effect of Potassium fertilizer on rice brown leaf spot and narrow brown leaf spot disease intensities
2001
Abdulrachman, S. | Yulianto (Balai Penelitian Tanaman Padi, Sukamandi, Subang (Indonesia))
An experiment to evaluate the combination effect of potassium fertilizer treatment on rice brown leaf spot and narrow brown leaf spot disease intensities was carried out on Planosol soil type at Jakenan district in the wet season of 1994/95. The experiment was arranged in randomized completely block design with six treatments i.e: (a) without fertilizer, as a control, (b) crop residue (rice straw), (c) NPK fertilizer, (d) rice straw and NPK fertilizer, (e) NP fertilizer, and (f) rice straw and NP fertilizer. The result indicated that the disease intensities of rice brown leaf spot and narrow brown leaf spot were decreased with NPK fertilization. On the other hand, the application of crop residue (rice straw) only decreased the rice narrow brown leaf spot intensity./Penelitian untuk mengevaluasi pengaruh pemberian kombinasi pupuk kalium terhadap intensitas penyakit bercak daun cokelat dan bercak daun bergaris pada padi dilaksanakan pada tanah Planosol di Jakenan pada MH 1994/95. Percobaan dilakukan berdasarkan rancangan acak kelompok dengan enam perlakuan dan enam ulangan yaitu: (a) tanpa pemupukan sebagai kontrol, (b) dengan jerami, (c) pupuk NPK, (d) dengan jerami dan pupuk NPK, (e) pupuk NP, dan (f) dengan jerami dan pupuk NP. Hasil penelitian menunjukkan bahwa intensitas penyakit bercak daun cokelat dan bercak daun bergaris secara nyata dapat ditekan melalui pemberian pupuk NPK, masing-masing dengan dosis 120 kg N, 45 kg P2O5 dan 90 kg K2O/ha. Di lain pihak, pemberian jerami hanya menurunkan penyakit bercak daun bergaris.
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