Effect of biofertilizers on vegetative growth and essential oil of sweet basil
Subject Areas : Agroecology Journal
Vahid Maleki
1
(Young Researchers and Elite Club
Karaj Branch
Islamic Azad University)
Khaled Salimi
2
(Department of Crop Production High Educational Complex of Saravan,)
Mohammad Reza Ardakani
3
(استاد گروه زراعت
واحد کرج
دانشگاه آزاداسلامی
کرج، ایران)
Keywords: o Azotobacter, o Azospirillum, o organic farming, o biofertilozer, o mycorrhiza,
Abstract :
ABSTRACT To study the effect of biofertilizers including mycorrhiza, azotobacter and azospirillum bacteria on vegetative traits of basil plant, an experiment was conducted at research field of Karaj Azad University based on randomized complete block design with four replications. Eight treatments include: no inoculation as control, inoculation with mycorrhiza, inoculation with azotobacter, inoculation with azospirillum, inoculation with mycorrhiza + azotobacter, inoculation with mycorrhiza + azospirillum, inoculation with azotobacter + azospirillum, and inoculation with mycorrhiza + azotobacter + azospirillum. Shoot amd root dry and fresh weight, inflorescence and plant height of sweet basil significantly increased by incubation with biofertilizers. Shoot dry weight was significantly higher in integrative inculation in camparison with control, but there were no significant differences among individual incubation of biofertilizers with control. Root dry and fresh weight were significantly higher in azotobacter and azospirillum in comparison with mycorrhiza; however, there was not a noticeable increase in integrative inoculation of biofertilizers. Inflorescence length and plant height were siginificantly higher in treated plants in camparison with control. In contrast, leaf width, leaf length and essential oil content of basil were not affected by biofertilizers. Thus, integrative application of azotobacter and azospirillum as seed incubation to increase the biomass and essential oil yield of basil is recommended.
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