Pengaruh Pemupukan N,P dan K Terhadap Produksi Daum Tempuyung (Sonchus arvensis L.)

Effect of N, P, and K on leaf yield of perennial sowthistle (Sonchus arvensis L.)A 23 factorial fertilizer field trial trial of nitrogen (urea), phosphorus (TSP) and potassium (KCl) on perennial sowthistle plant (Sonchus arvensis L.) was carried out on redish brown latosol soil at Cimanggu Experimental Station in Bogor to evaluate their effect on its leaf production and also to find the best fertilizer combination to produce high yielding leaf production. A randomized block design with eight fertilizer combination treatments and consist of three factors: N, P, and K and each factor consist of two level: 0 and 31 kg/ha calculated as N, P2O5, and K2O. only the main effect of nitrogen fertilizer at the rate of 31 kg N/ha showed a significant yield, 656.69 g/plot of equivalent to 1094.49 kg/ha dry leaf, 15% higher than the average yield of no nitrogen treatments, 569.67 g/plot or equivalent to 949.45 kg/ha dry leaf.