Items where Author is "Refa, firgiyanto"

M. Zayin Sukri, MZ and Sugiyarto, Sugiyarto and Refa, firgiyanto (2020) The growth response of chili plant in sand land with the provision of organic material, zeolite and cane blotong. IOP Conference Series: Earth and Environmental Science. ISSN 1755-1307

M. Zayin, Sukri and Refa, firgiyanto and Vega Kartika, Sari and Basuki, Basuki Kombinasi Pupuk Kandang Sapi, Asam Humat dan Mikoriza Terhadap Infeksi Akar Bermikoriza Tanaman Cabai dan Ketersediaan Unsur Hara Tanah Udipsamments. Jurnal Penelitian Pertanian Terapan. ISSN 2407-1781

muhammad, zayin sukri and Hanif Fatur, Rohman and Refa, firgiyanto The effect of Biofertilizer Application and Shoot Pruning on the Production of chili plants on sandy media. IOP Conference Series: Earth and Environmental Science The 4th International Conference on Food and Agriculture, 980. ISSN 980 012016