Analisa Sifat Nutrisi Tanah Perkebunan Yang Diberi Pupuk Urea ( CO(NH2)2 ) Me…

Has conducted a study to analyze the nutritional properties of plantation land by urea CO (NH2)2 using a sensor soil nutrient modified Wenner. Soil nutrient concentrations simulated by varying the mass amounts of fertilizer, where the mass of fertilizer used is 5, 10, and 15 grams. Then measuring to see a shift in the frequency and amplitude. The results obtained indicate that there has been Δ…