Agriculture and horticulture
B. Yousefi; M.H. Lebaschy; F. Sefidkon; H. Safari
Abstract
To investigate the effects of planting density and organic fertilizers on the yield traits of Satureja spicigera (K.Koch) Boiss. under the Kermanshah rainfed conditions, an experiment was conducted as a split-plot based on complete randomized block design (CRBD) with three replications in Kermanshah ...
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To investigate the effects of planting density and organic fertilizers on the yield traits of Satureja spicigera (K.Koch) Boiss. under the Kermanshah rainfed conditions, an experiment was conducted as a split-plot based on complete randomized block design (CRBD) with three replications in Kermanshah Agricultural and Natural Resources Research Center in 2016-2020 crop years. The main factor and sub-factor were fertilizer (rotten cow manure, enriched straw, and field soil (control)) and plant density (2.66, 4, and 8 plants.m-2), respectively. To have the desired densities, plants were grown with a distance of 50 cm between the rows and 25, 50, and 75 cm on the rows. The results showed that the traits including diameter, height, canopy area, fresh and dry weight of plant, fresh and dry yield per hectare, and essential oil yield per hectare were significantly different between the years, plant densities, and fertilizer treatments. The highest fresh yield (3639.3 kg.ha-1) was obtained in the rotten cow manure+ high plant density treatment and the highest dry yield (2105 kg.ha-1) and essential oil yield (72.59 kg.ha-1) in the enriched straw+ high plant density one. The results showed that the best fertilizer and plant density treatment for S. spicigera was straw enriched with ammonium sulfate and 8 plants.m-2.
Agriculture and horticulture
B. Yoosefi; F. Sefidkon; M. Mirza; M.H. Lebaschy
Abstract
Satureja mutica Fisch. & C. A. Mey. is one of the native savory species of Iran that has received much attention due to its high essential oil content and phenolic compound of thymol. Determination the most suitable and best planting density as well as soil fertility is very important in increasing ...
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Satureja mutica Fisch. & C. A. Mey. is one of the native savory species of Iran that has received much attention due to its high essential oil content and phenolic compound of thymol. Determination the most suitable and best planting density as well as soil fertility is very important in increasing the quantitative and qualitative yield of medicinal plants. In this study, to investigate the effects of plant density and feeding with organic fertilizers on quantitative and qualitative yield of essential oils in Satureja mutica Fisch. & C. A. Mey. under rainfed conditions, an experiment was conducted as split plots in a randomized complete block design with 3 replications in the Research and Education Center of Agriculture and Natural Resources of Kermanshah province in 3 crop years (2018-2020). The main factor included 3 fertilizer treatments and the sub-factor was 3 densities (2.66, 4, and 8 plants per square meter) in rows with a distance of 50 cm and with 3 planting distances (25, 50, and 75 cm). Plant aerial parts were harvested at full flowering stage and their essential oil (EO) was extracted by hydrodistillation method. EO yield was calculated according to the plant dry weight and its chemical compounds were identified using GC and GC/MS. The results showed that percentage and EO chemical composition did not show any difference between the years. There was a significant difference between the fertilizer treatments for the percentage and EO yield and thymol, carvacrol, and other EO chemical compounds at the level of 1%. There was a significant difference between the planting densities only for EO yield. Thymol had a positive relationship with the treatments of enriched straw and then rotten cow manure and the highest amount (53.2%) was observed in the enriched straw treatment. Carvacrol with the highest amount of 9.2%, showed a positive relationship with the rotten cow manure treatment.
Improvement and breeding
B. Yoosefi; S.R. Tabaie-Aghdaie; A. Amiri
Abstract
Forty eight damask rose (Rosa damascena Mill.) accessions from different parts of Iran (11 native accessions of Kermanshah and 37 accessions from other provinces of the country) were cultivated in a randomized complete block design with three replications in Mehregan research station, Kermanshah province ...
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Forty eight damask rose (Rosa damascena Mill.) accessions from different parts of Iran (11 native accessions of Kermanshah and 37 accessions from other provinces of the country) were cultivated in a randomized complete block design with three replications in Mehregan research station, Kermanshah province in 2006-2011 and their yield, morphological, and phenological traits were studied. Each experimental plot consisted of three individual plants with a distance of 3 m × 3 m. The drip irrigation was carried out once every 10 days. Also, the chemical fertilizers and pesticides were not used in the field. The desired traits were recorded and analyzed after the seedlings establishment in the third to fifth years. The results of combined analysis of variance showed that all the studied traits were significantly different (P<0.01) between the experimental years and between the different accessions. The variance of accession × year interaction in all the traits was significant (P<0.01). According to the results, the accessions Kermanshah codes 10, 11, 2, and 3, Kurdistan 1, and Isfahan codes 7 and 4 could be introduced for the cultivation in the climatic conditions of Kermanshah province as the compatible accessions with suitable flower and essential oil yield.
