B. Mirshekari; H. Asadi Rahmani; A. Mirmozafari Rodsari
Abstract
In order to study the effects of seed inoculation with Azospirillum strains and coating with microelements on seed and essential oil yield of cumin (Cuminum cyminum L.) an experiment was conducted at research field of agricultural faculty of Islamic Azad University of Tabriz. Studied factors were Azospirillum ...
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In order to study the effects of seed inoculation with Azospirillum strains and coating with microelements on seed and essential oil yield of cumin (Cuminum cyminum L.) an experiment was conducted at research field of agricultural faculty of Islamic Azad University of Tabriz. Studied factors were Azospirillum strains (lipoferum, brasilense, irakense, strain of and strain 21) included seed coating with microelements and no-coating seeds. Factorial experiment was arranged based on randomized complete block design. Results indicated that, when seeds were inoculated with Azospirillum, strain 21, umbel number per plant increased 11 umbel, compared with control. The lowest thousand seed weight obtained from treatment that seeds no-inoculated and no-coated. Seed yield was the highest (571 kg ha-1), when seeds were both inoculated with strain 21 and coated with microelements, and this value was twice more than the treatment of those seeds only inoculated with Azospirillum strains. When seeds were coated with microelements, yield increased to 147 kg ha-1 (based on averaged Azospirillum strains) compared to non-coated seeds. Essential oil yield of cumin ranged from 17.2 kg ha-1 in treatment of seed inoculation with Azospirillum, strain 21×seed coating with microelements to 2.56 kg ha-1 in control sample. Difference between seed and Essential oil yield of cumin was not significant, when those seeds coated with microelements were inoculated with strain 21 and strain of. In cumin planting seeds coating with microelements and inoculation with Azospirillum, strain 21 or strain of is recommended.
F. Heidari; S. Zehtab Salmasi; A. Javanshir; H. Aliari; M.R. Dadpoor
Volume 24, Issue 1 , May 2008, , Pages 1-9
Abstract
Peppermint (Mentha piperita L.) from Lamiaceae family is one of the most important medicinal plants, used in food, sanitary and cosmetic industries. A field experiment was carried out in Tabriz University in 2005. In this study, the effects of four plant densities (8, 12, 16 and 20 plants/m2) and microelements ...
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Peppermint (Mentha piperita L.) from Lamiaceae family is one of the most important medicinal plants, used in food, sanitary and cosmetic industries. A field experiment was carried out in Tabriz University in 2005. In this study, the effects of four plant densities (8, 12, 16 and 20 plants/m2) and microelements of two level (nonspraying, spraying) on yield and essential oil production of peppermint were evaluated at two cuttings. The data obtained from each harvests by factorial experiment on the basis of randomized complete block design (RCBD) with three replications and two cutting analysis of compound variance (split plot on time). The results of the first cutting showed that microelements of spraying dry yield, bush and leaf essential oil percentage and essential oil yield increased. In the first cutting dry yield, the oil yield increased by increasing the plant density. In second cutting, microelement spraying cause dry yield and leaf essential oil percentage and essential oil yield of significant affected. Also dry yield increased by increasing the plant density .The results of two cutting indicated that peppermint plants grown better in the first cutting than the second cutting. Plants harvested in first cutting had higher dry yield and essential oil yield, but had lower bush and leaf essential oil. The maximum leaf essential oil percentage (2.96%) obtained with spraying in the second cutting. The maximum essential oil yield was obtained (20.02 li.ha-1) in the first cutting.
