Pengaruh Pupuk Organik Cair Nasa dan Interval Penyiraman Terhadap Pertumbuhan Jambu Air (Syzygium aqueum)

Abstract

Torgamba Subdistrict, South Labuhanbatu Regency is one of the marginal land distribution areas that has a low fertility rate. For this reason, many communities around the forest depend on their lives by utilizing forest products that can threaten forest sustainability. Planting MPTS of water apple type can be used as a solution to the problem. The purpose of this study was to obtain the optimal dose of nasa liquid fertilizer and watering interval against the growth of the water apple (Syzygium aqueum). This research was carried out in the greenhouse of the Faculty of Agriculture, University of North Sumatra in June-September 2022. Using a Factorial Complete Randomized Design with 2 factors, namely the dose of nasa liquid organic fertilizer (0 ml, 15 ml, 30 ml, 45 ml) and the watering interval (once every 1 day, once every 3 days, once every 5 days, once every 7 days) so that 16 treatments with 3 tests. Research results show that the treatment interaction between nasa liquid organic fertilizer and watering intervals showed results that had a noticeable effect on height but had no noticeable effect on the diameter, number of leaves, upper wet weight, upper dry weight, lower wet weight, lower dry weight of the water apple. N3 treatment (fertilizer dose 45 ml) and watering interval of once every 1 day obtained the best results on each of the measured parameters.