Effect of Chemical and Biological Phosphorus on the Yield of Summer Savory (Satureja hortensis L.)


1 Department of Agronomy, Faculty of Agriculture, Urmia University, Urmia, Iran.

2 Group of Medicinal Plants, Department of Horticulture, Faculty of Agriculture, Urmia University, Urmia, Iran.

3 Department of Horticulture, Faculty of Agriculture, Urmia University, Urmia, Iran


To survey the effects of chemical and biological phosphorus on the yield and essential oil of Satureja hortensis L. as an important medicinal plant, factorial experiment was conducted based on randomized complete block design with three replicates at Research Station of Faculty of Agriculture, Urmia University in 2011. The treatments were chemical phosphorus fertilizer with four levels (0, 50, 100 and 150 kg/ha P as triple supper phosphate) and biological phosphorus fertilizer with four levels (0, 100, 200 and 300 g/ha Pseudomonas putida Strain P13 and Bacillus lentus Strain P5). The results of ANOVA showed the significant interaction effect between chemical and biological phosphorus on the yield of fresh weight, biological yield, stem dry weight, and the yield of drug and essential oil. There was non-significant effect of chemical and biological phosphorus on the essential oil percent, harvest index of drug and harvest index of essential oil. The highest amounts of total fresh weight (23327 kg/ha), biological yield (5282 kg/ha), stem dry weight (2523 kg/ha) and yield of drug (2759 kg/ha) and essential oil (79 kg/ha) were obtained from 200 g/ha of biological phosphorus without chemical fertilizer. The minimum amounts of total fresh weight, biological yield, stem dry weight, the yield of drug and essential oil were observed in higher than 200 g/ha of biological phosphorus.


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