Effects of foliar spraying of l-phenylalanine and application of bio-fertilizers on growth, yield, and essential oil of hyssop [Hyssopus officinalis l. subsp. Angustifolius (Bieb.)]

摘要: Abstract In order to improve growth and yield of medicinal aromatic plants, the application natural substances has been increased in recent years. this study, effects different fertilizers under foliar spray l -phenylalanine on physiological characteristics essential oil content hyssop [Hyssopus officinalis L. subsp. Angustifolius (Bieb.)], as one important at field condition southwestern Iran were investigated a 2-year study (2016 2017). Experimental treatments including arbuscular mycorrhizal fungi, chemical (N.P.K), manure, vermicompost with control main plots well three levels sub plots. Results indicated that organic/biological along spraying have beneficial effective role improving characteristics, shoot performance, photosynthetic pigments, active hyssop. Hence, fungi symbiosis manure can be promising strategy achieving organic production plants such