Pengaruh Pemberian Pupuk Kandang Kambing dan NPK terhadap Pertumbuhan Tanaman Kangkung (Ipomoea reptans poir)

Abstract

Water spinach (Ipomoea reptans Poir) is one of the most popular leafy vegetables in Indonesia. In addition to being easy to cultivate, water spinach also has high nutritional value and is widely favored by people from various backgrounds. This vegetable contains various vitamins such as vitamins A and C, as well as essential minerals such as iron and calcium, which play an important role in maintaining body health. This study was conducted on farmland in Teluk Panji Village, Kampung Rakyat District, Labuhan Batu Selatan Regency, North Sumatra Province at an altitude of 25 meters above sea level from June 2025 to July 2025. The research used a two-factorial Randomized Block Design (RBD) with two treatment factors, namely: Factor 1: Goat manure fertilizer with four dosage levels: 0 g/plant, 30 g/plant, 60 g/plant, and 90 g/plant. Factor 2: NPK 15:15:15 fertilizer with three dosage levels 0 g/plant, 0.5 g/plant, and 1 g/plant. The observed variables included plant height, number of leaves, stem diameter, fresh shoot weight, fresh root weight, and total fresh plant weight.The application of goat manure fertilizer had a significant effect on plant height, number of leaves, stem diameter, fresh shoot weight, fresh root weight, and total fresh weight of water spinach. The application of NPK fertilizer had a significant effect on plant height, number of leaves, stem diameter, fresh shoot weight, fresh root weight, and total fresh weight of water spinach. The interaction between goat manure fertilizer and NPK had a significant effect on plant height, number of leaves, fresh shoot weight, fresh root weight, and total fresh weight of water spinach. However, the interaction between goat manure fertilizer and NPK had no significant effect on the stem diameter of water spinach plants.