Evaluafion Of The biological effects Of Fertilizer application on yield and yield components of Dill (Anethum graveolens)

Biologic fertilizers actually are complex of some micro organisms that mobilize main nutrients from unavailable form to available form and can improve root system and seed germination and are one of main sources of nutrients providing in sustainable agriculture. To study effects of biologic fertilizers on growth of dill (Anethum graveolens) an experiment was curried out in Looieen plain (Saveh suburb).Investigation conducted on the basis of complete randomized blocks design with four treatments and three replications.The treatments were as fallow: 1- Nitroxin application (Azotobacter and Azospirillum bacteria). 2- Barvar2 application (pseudomonas flurescence) as phosphorus solubilizing bactria. 3- Application of mixture of above two biologic fertilizers. 4-control treatment (without any biologic fertilizer application). Results showed utilization of biologic fertilizers significantly increased seed yield¡ biologic yield¡ bush height¡ umberella flowering arrangement number in bashes¡ seed number in any umberella¡ seed number in bashes and one thousand seed weight.Nitroxin Barvar 2 had most effects on above parameters and nitroxin also had promising results. Most and least seed yield obtained in first treatment and control (16.31 and 9.8 gr) respectively. It was concluded utilization of biologic fertilizers improves growth and growth characteristics of dill and can substitute chemicals without hazards to environment.