Pengaruh Berbagai Media Tanam dan Dosis Pupuk Nitrogen Terhadap Pertumbuhan dan Hasil Tanaman Sawi Hijau (Brassica juncea L.).

Green mustard is a type of vegetable with commercial value and bright prospects due to its delicious taste, easy availability, and uncomplicated cultivation. Mustard greens are rich in nutrients, for instance, every 100 grams of mustard greens contain 2.3 grams of protein, 0.3 grams of fat, 4.0 grams of carbohydrates, 220.0 mg of calcium, 38.0 mg of phosphorus, 2.9 mg of iron, 1940 mg of vitamin A, 0.09 mg of vitamin B, and 102 mg of vitamin C, as well as 92 grams of water. The high demand for green mustard has triggered production development to meet consumer needs. Increasing production requires attention to cultivation techniques, including the use of a combination of growing media and nitrogen fertilizer. Nitrogen is crucial for plant vegetative growth, and the use of a combination of organic and inorganic fertilizers can enhance nitrogen uptake by plants. This research was conducted in March-April at the Agricultural Greenhouse, Brawijaya University. The growing media used included a mixture of soil, rice husk charcoal, and cow manure with various ratios. The research results indicate that the treatment using a 1:1:1 mixed growing media (soil, rice husk charcoal, cow manure) and the application of 75 kg N/ha (urea) + 75 kg N/ha (ZA) provided the best results in terms of plant height, leaf area, fresh weight, and consumption weight. However, treatments with a 0:2:1 mixture and various doses of nitrogen fertilizer (150 kg N/ha urea, 150 kg N/ha ZA, 75 kg N/ha urea + 75 kg N/ha ZA, 112.5 kg N/ha urea + 37.5 kg N/ha ZA) resulted in lower growth and yield of green mustard. This is likely due to the lack of nutrients in the growing media mixture. [ABSTRACT FROM AUTHOR]