effects of biofertilzer with organic and chemical fertilizers on quantities yield and physiological parameters in indian senna (cassia angustifolia vahl)

introduction and aim: sennai (cassia angustifolia vahl) is one of the valuable plants which used to constipation treatment. production of organic plants is one of the goals of medicinal plant production, this is possible with the application of bio-fertilizers. in the past decades due to the use of chemical fertilizers numerous environmental impacts, including soil and water pollution problems in the health of humans and other living things came into being. bio-fertilizers are useful microorganism in the area around the plant roots. they can coloniz in plant roots and increase growth by improving the absorption of minerals nutrients, especially phosphorus. microorganisms in biofertilizers can convert mineral elements in the soil into the vitamins and other minerals in the soil and reach them to the roots. the use of bio-fertilizers is cheaper and do not cause pollution in the ecosystem. materials and methods: in order to study the effects of different types of biological fertilizers with organic and chemical fertilizers on quantities yield, photosynthesis pigments and nutrient elements concentration in indian senna (cassia angustifolia vahl), a field experiment was conducted as factorial design with three replications at university of zabol in 2012. the experiment consisted of three different types of biological fertilizer: b1= nitroxin, b2= biosulfure, b3= barvar phosphate biofertilizer 2 and b4= combined of b1+b2+b3 as a first factor and f1=manure, f2=compost and f3=chemical fertilizer was as the second factor. results: results showed that, biofertilizer had significant effect on grain yield, number of pod per plant and the amount of phosphorus in shoot and seed of indian senna. the highest grain yield and phosphorus in this study was obtained from barvar phosphate biofertilizer and nitroxin and the number of pods per plant was obtained from nitroxin. the results showed that, organic and chemical fertilizer and interaction between biological fertilizer and organic fertilizers had significant effects on the grain yield, biological yield, number of branches per plant and number of pods per plant. the highest values of these traits were obtained at b1f1 treatment. the use of biological fertilizers although had no significant effects on photosynthesis pigments and soluble carbohydrate in leaves but organic and chemical fertilizer have a significant effect on the chlorophyll a and soluble carbohydrate in leaves of indian senna. conclusion: the results of this experiment showed that, the best treatment in this study was the use of biological fertilizer nitroxin with organic manure. this treatment improved yield quality and physiological parameters in indain senna