Pustaka Ilmiah Universitas Padjadjaran

Abstrak

Pengaruh Pupuk Organik Dan Sp-36 Terhadap Beberapa Sifat Kimia Andisols Serapan P Dan Hasil Tanaman Kubis (Brassicaoleracea Var. Grand 11)

The aim of the experiment was to find out the interaction effect between organic fertilizers and the dosages of P fertilizer on available P and P retention in Andisols from Pangalengan, West Java, P uptake and yield of cabbage. The experimental design was factorial randomized block which consisted of two factors. The first factor were: amendment of 20 ton ha of cattle manure, chicken manure, sheep manure, and straw rice compost. The second factor was application of phosphate fertilizers SP-36 in the rate of 0, 90, 180, and 270 kg/ ha P2O5. The results of the experiment showed that there was significant interaction effect between organic fertilizers and P fertilizer on avai!able P, but not on pH, ZPC (pHo), P-retention, P-uptake, and yield of cabbage. Organic fertilizers amendment increased pH and ZPC (pHo) significantly. Application of 90 kg/ha P2O5, sheep manure or straw rice compost amendment gave the highest available P. Available P, P retention and yield of cabbage were not affected by the application of P fertilizer except at 270 kg/ha P2O5. The application of chicken manure and sheep manure gave the highest P uptake and yield of cabbage.