Effect of phosphorous biofertilizer on some quantitative and qualitative traits of hyssop (Hyssopus officinalis)

حبیب زاده, فرهاد and غلامحسینی, مجید and حضرتی, سعید and نیکجویان, محمد جواد Effect of phosphorous biofertilizer on some quantitative and qualitative traits of hyssop (Hyssopus officinalis). In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

In order to investigate the effect of phosphorus bio- and chemical fertilizers on hyssop, an experiment was conducted in 2019 in a randomized complete block design with three replications at Imam Khomeini International University. Treatments included the application of phosphorus biofertilizer with irrigation, soil fertilization of phosphorus chemical fertilizer before planting, application of biofertilizer + 50% chemical fertilizer and non-use of phosphorus fertilizer (control). The results showed that the effect of experimental treatments on fresh weight, dry weight and phosphorus content of the vegetative parts was statistically significant at 1% level and on the percentage and yield of the essential oil at the 5% probability level. Application of biofertilizer produced the highest percentage of essential oil, while the lowest percentage of essential oil belonged to the use of phosphorus chemical fertilizer. The highest essential oil yield belonged to biofertilizer + 50% of phosphorus fertilizer, which did not show significant difference with single application of each of these two types of fertilizers. Biofertilizer application significantly increased the phosphorus content of the vegetative parts in control plant. It was concluded from this experiment that biofertilizer application was able to largely replace the phosphorus fertilizer.

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