Jurnal Agrikultura

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ABSTRACT Synergism of herbicide mixture of Glyphosate IPA 240 g/L and 2,4 D Amines 120 g/L in controlling various types of weeds Mixture of herbicides with two or more types of active ingredients will show an interaction of the ingredients. These interactions could be synergistic, additive, or antagonistic. The purpose of this research was to investigate the herbicide mixture of Glyphosate IPA 240 g/L and 2,4 D Amines 120 g/L to control various types of broadleaf weeds and grass weeds. The research was conducted from March until May 2019, at the green house of the Faculty of Agriculture, Universitas Padjadjaran at Jatinangor Sumedang. The treatment consisted of three types of herbicides with different dosages, namely mixture of glyphosate IPA 240 g/L and 2.4 D Amine 120 g/L (2,880, 1,440, 720, 360, 180, and 0 g/ha), glyphosate IPA 240 g/L (1,920, 960, 480, 240, 120, and 0 g/ha), and 2,4 D Amine 120 g/L (960, 480, 240, 120, 60, and 0 g/ha) with five replications. The target weeds were Ageratum conyzoides, Synedrella nodiflora, Borreria alata, Ischaemun timorense, and Otochloa nodosa.  Data were analyzed using analysis of linear regression and MSM method to determine LD95 treatment and LD95 expectation. The result showed that mixture of herbicides glyphosate IPA and 2.4 D Amine had LD95 treatment value (3992,91 g/ha) and smaller than LD95 expectation value (4180,81 g/ha), so the herbicide mixture was synergistic. Keywords: Mixed herbicide, IPA Glyphosate, 2,4 D Amine, LD95, MSM method ABSTRAK Herbisida campuran dengan dua atau lebih jenis bahan aktif akan menunjukkan interaksi satu bahan dengan bahan yang lain. Interaksi tersebut dapat bersifat sinergis, aditif dan antagonis. Tujuan dari penelitian ini yaitu untuk mengetahui interaksi herbisida campuran berbahan aktif IPA Glifosat 240 g/L dan 2,4 Amina 120 g/L terhadap pengendalian gulma berdaun lebar dan gulma rumput. Penelitian dilaksanakan pada bulan Maret sampai Mei 2019, di rumah kaca Fakultas Pertanian Uni