عنوان مقاله [English]
نویسنده [English]چکیده [English]
In order to study the effect of organic and biologic manures on essential oil and some growth characteristic of herb dill (Anethum graveolens L. ) a field experiment was done in the form of factorial in randomized complete block design (RCBD) in research field of Islamic Azad University, college of agriculture and natural resources branch of karaj, Mahdasht,Iran in 2012. The treatments were: A) humic acid with three levels (a1 = none use, a2 = spraying on leaves[3 lit/ha], a3= soluble giving pie plant [6 lit/ha] , B) plant growth-promoting rhizobacteria with two levels (b1= none use, b2= use, C) seaweed extract(c1 = none use, c2 = soluble in irrigation water 1/5 lit/ha).Results illustrated that organic and biologic manures have significant preference in many of studied traits in compared to control. Humic acid had significant effect on essential oil, leaf length and shoot diameter at 1% level of probability. Among the treatments, soluble giving of humic acid pie plant + use of plant growth promoting rhizobacteria and seaweed had the maximum amount of essential oil and leaf length. Consumption of Plant growth promoting rhizobacteria causes increase in pedicel length and leaf length and decrease in MDA content. Maximum amount of pedicel length and root diameter was observed in Consumption of Plant growth promoting rhizobacteria and seaweed and none use of humic acid had treatment. Seaweed extract had significant effect on leaf length and shoot diameter at 1% level of probability. Experimental treatment had no significant effect on root length. Leaf spraying of humic acid and use of Plant growth promoting rhizobacteria and seaweed extract had maximum and minimum amount of root length and MDA content respectively. Overall, results showed that humic acid, plant growth promoting rhizobacteria and seaweed extract had additive effects on studied traits.