The Effect of different fertilization systems on nutrititative and qualitative characteristics medicine forage (Case study: alfalfa (Medicago sativa L.) and fennel (Foeniculum vulgare L.))

To study the effect of different fertilization systems on forage quality and secondary metabolites of medicinal forage in additive intercropping of alfalfa and fennel an experiment was conducted as split plot based on randomized complete block design with three replications at College of Agriculture، Shahed University in Tehran، 2011. The main plots were allocated to different levels biofertilizer and chemical fertilizer phosphorus in four levels viz. 1. Control (no fertilizer)، 2. Biofertilizer (Nitroxin، biophospherous fertilizer 2)، 3. Integrated fertilizer (bio fertilizers+ 50 percent chemical fertilizer)، 4. Chemical fertilizer (triple super phosphate). The subplots were allocated to different combinations of 1. Sole alfalfa، 2. Sole fennel، 3. 100 percent alfalfa+ 50 percent fennel، 4. 100 percent alfalfa+ 100 percent fennel. Results showed that the highest amount of crude protein was obtained in alfalfa+ 50 percent fennel at control treatment and the highest dry matter digestibility in sole alfalfa at integrated fertilizing system. The lowest percentage of essential oil was obtained in alfalfa+ 50 percent fennel at integrated fertilizing system.