Pengaruh Kombinasi NPK dan Pupuk Kandang terhadap Sifat Tanah dan Pertumbuhan serta Produksi Tanaman Caisim

The study was conducted in Keputran village, Tanggamus District, Lampung Province. The aim of this study was to examine a proper combination of NPK fertilizer and chicken manure for the vegetable crops, especially chinese mustard (Brassica campetris Var. Chinensis L.) in order to increase the production. A randomized completely block design was used in this experiment with ten treatments and three replications. The results showed that the application of chicken manure with the dosage of less than 5 Mg ha-1 combined with NPK fertilizer did not effective to affect the increasing of growth and production of chinese mustard. Meanwhile, application of chicken manure more than 5 Mg ha-1 combined with NPK fertilizer was significantly affected the growth, production of chinese mustard and soil properties i.e. total-C, total-N, available P , exchangeable K, and humic and fulvic acid. The application of chicken manure effective to reduce NPK fertilizer. The best yield was found in using 50% of NPK fertilizer and 50% of chicken manure (10 Mg ha-1)