Study the effect of biological and chemical fertilizers on Artemisia annua L. root characteristics

Abstract

To consider the effect of biological and chemical fertilizers on Artemisia annua L. root characteristics (root height, dry and wet weight of root and water amount of root after flowering stage) an experiment was carried out in factorial design in completely randomized design with 4 replications in a educational green house in Tehran in 2010. Treatments included chemical fertilizers (Nitrogen (N), Phosphorus (P)) in 4 levels (N0P0, N40P40, N80P40, N80P80) and biological fertilizers in 4 levels (control, Nitroxin [include bacteria which stimulus growth (Azotobacter and Azospirillum)], Bio-phosphorus [(include bacteria which stimulus growth (Bacillus and Pseudomonas)] and Vemricompost fertilizer. Results showed that using biological fertilizer, and increasing different levels of chemical fertilizers (N, P) had significant effect on under consideration characteristics. Means comparison showed that biological fertilizers application leads to significant increase in all under consideration features. Among biological fertilizer, Vemricompost treatments are the most effective. Means comparison of applying different levels of chemical fertilizers indicated that N80P80 had the most increase in features. Interaction effect had different effects on those feature.