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Articles by M.R. Chaichi
Total Records ( 3 ) for M.R. Chaichi
  Ali Akbar Tajali , Gholamreza Amin , M.R. Chaichi and G. Zahedi
  Camphorosma monspeliaca L. were collected in full flowering stage from 3 different habitats in Iran. Essential oil of aerial parts was obtained using cellevenger apparatus and chemical composition were analyzed by GC and GC/MS and identified in comparison with authentic compounds. The yields of essential oils were to 0.15 v/w% and the major compounds in 3 habitats were α-pinene, citronellyl pentanoate, endo-bourbonanol, α-fenchene, trans-pinocarveol, limonene, pinocarvone, camphene and dill ether.
  A.H.A. Ahmadi , M.R. Chaichi and M. Mirabzade
  The study was conducted to determine the effects of nitrogen fertilizing systems and harvest frequencies on DM (dry matter) yield and forage quality of snail medic; Medicago scutellata var. Robinson. Rhizobium meliloti inoculation and four levels of chemical nitrogen fertilizer (0, 25, 75 and 125 kg N ha-1) were allocated to the main plots while four levels of harvest frequencies such as 1, 2 and 3 weeks intervals and control with only one harvest at 50% flowering were assigned to subplots. According to the results of this experiment, nitrogen fertilizing systems had significant effects (p<0.05) on DM yield and CP (crude protein) concentration of snail medic as these traits increased with the increment in availability of nitrogen for plants. Harvest frequency increased the DM yield, CP and WSC (water soluble carbohydrate) concentrations, whereas decreased the ADF (acid detergent fiber) concentration. Interaction between harvest frequency and nitrogen fertilizer systems was significant (p<0.05) for DM yield and WSC concentration; hence treatment of 75 kg N ha-1 with two-week harvest interval produced acceptable DM yield with proper quality in M. scutellata, which eliminated the necessity of Rhizobium inoculation and reduced the cost and environmental contamination compared to 125 kg N ha-1.
  R. Bagheri , M.R. Chaichi , M. Mohseni-Saravi , G.R . Amin and G. Zahedi
  This study was conducted in order to study the effect of grazing on quality and quantity of Artemisia sieberi essential oil in Kerman province of Iran. Vegetation sites of Artemisia sieberi under three grazing intensity (heavy, moderate and non-grazed) with the same ecological conditions were selected based on distance of water resource and nomad tent in Khabre National Park and near rangelands. Within each sits, two individual plants sampled at random in full flowering stage. The oils were obtained by hydrodistillation of air-dried samples and were analyzed by GC-MS. The main constituents of oils were as follows: non-grazed site; 1,8cineol (29.9%), myrcene (14.1%), moderate grazed site; myrcene (15.9%), 1,8cineol (15.1%), Eudesm-7(11)-en-4-ol (11.1%) and heavy grazed site; 4-tepinyl acetate (23.3%), davanone (21.9%), p-cymene (19%).
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