Effects of Harvest Age and Nitrogen Fertilization Levels on Nutrient Composition and Yield of Red Elephant Grass (Pennisetum purpureum cv. Red)Rizka Muizzu Aprilia, Kusmartono Kusmartono, Kuswanto Kuswanto, Ifar Subagiyo, Asri Nurul Huda, Avril Rahma Prasasti and Rasyid Farda HidayatullohBIO Web Conf., 218 (2026) 01018DOI: https://doi.org/10.1051/bioconf/202621801018