PENGARUH PEMBERIAN PUPUK KASCING TERHADAP KETERSEDIAAN NITROGEN PADA BERBAGAI JENIS TANAH DAN SERAPAN NITROGEN OLEH PAKCOY (Brassica rapa L.)

Nitrogen is a primary macro nutrient needed by plants and has an important role in plant growth. Regosols, Latosols, Grumusols are soils that have the potential as medium for growth, with different characteristics levels of productivity constrained soil nitrogen. Application nitrogen-rich vermicompost alternative to overcome problem three soils. The research aimed determine available nitrogen content absorption pakcoy adding on Grumusols. used split-plot design main plot form types (T1 = T2 T3 Grumusols) subplot dose fertilizer (K0 0 t ha-1, K1 10 K2 20 K3 30 ha-1) so there 12 treatments repeated times. results showed application increased total N, organic carbon, cation exchange capacity, height, fresh weight, dry N uptake. ha-1 was optimum parameter availability.