UJI EFIKASI FUNGISIDA UNTUK PENGENDALIAN PENYAKIT HAWAR PELEPAH (Rhizoctonia solani Khun.) PADA tanaman PADI SECARA IN VITRO DAN IN VIVO

Abstract

Rhizoctonia solani Khun, is a fungus that causes important diseases in rice plants which can reduce rice production. In Indonesia, the severity of rice leaf sheath blight attacks reaches 6 - 52% according to the management of the plantation environment and altitude. Evaluation of the effectiveness of the active ingredient of the fungicide in controlling sheath blight (R.solani) in rice plants in vitro and in vivo at the R&D Syngenta Station, Cikampek, Karawang, Jawa Barat, from 01 March to 20 July 2022. The active ingredient used is Propinab , Trifloxystrobin, Tebuconazole, Difenoconazole, Azoxistrobin, Propiconazole, Tricyclazole, Pyraclostrobin, Epoxyconazole. In vitro efficacy test for 10 treatments and 10 repetitions by calculating the diameter of the mycelium at 2 HSA to 14 HSA two-day intervals and in vivo efficacy test using 9 treatments 3 repetitions which calculates the proportion of attacks at 7 HSA1, 7 HSA2 and 14 HSA3. The results of the efficacy test showed that some of the fungicide active ingredients in controlling rice sheath blight (R.solani) in rice showed a significant difference between the fungicide active ingredients and the control targets. Treatment of the active ingredient Trifloxystrobin 25% + Tebuconazole 50% gave the best efficacy test results in vitro and in vivo.