Agriculture and horticulture
leili safaei; Fatemeh Sefidkon; saeed- davazdahemami-; Davood Aminazarm
Abstract
In order to study different methods of soil fertilization in Satureja .khuzistanica a research carried out in Fozveh station of Agricultural and Natural Resource Research Center of Isfahan, during 2016- 2020. The treatments were different levels of chemical fertilizers (N50P25K25), different levels of ...
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In order to study different methods of soil fertilization in Satureja .khuzistanica a research carried out in Fozveh station of Agricultural and Natural Resource Research Center of Isfahan, during 2016- 2020. The treatments were different levels of chemical fertilizers (N50P25K25), different levels of organic fertilizers (Cow Manure30, Cow Manure60 and 5 ton/ha Vermi-compost) and combination of chemical and organic fertilizers (N50P25K25+ Cow Manure30, N50P25K25+ Cow Manure60, N50P25K25+ 5 ton/ha Vermi-compost). These treatments were compared with the control. The project had 3 replications, according to a randomized complete block design. The percentage of essential oil was measured by water distillation (Clevenger) at 50% flowering stage. The amount of essential oil compounds was evaluated by gas chromatography (GC) and the qualification of essential oil was measured by Gas chromatography-mass spectrometry (GC-MS). According to the results, the maximum essential oil percentage and oil yeild in S. khuzistanica was 3.7% (in the third year) and 132.6 kg/ha (in the second year). Based on the results of the experimental years, the highest oil yield was observed in the combined treatment of 50 kg/ha nitrogen, 25 kg/ha of phosphorus and 25 kg/ha of potas plus 5 tons per hectare of vermicompost, in the third year. During the experimental years, 14 compounds were identified in S. khuzistanica essential oil that major compound was carvacrol (86.4-95.3%). According to the results, the qualitative yield of essential oil of this species was less affected by soil fertility treatments, but the quantitative yield of essential oil had a significant increase that indirectly increases the qualitative yield of essential oil. Finally, it was concluded that intermediate method was the superior treatment in order to improving quantitative yield and can lead to sustainable agriculture.
L. Safaei; H. Zeinali; D. Afiuni
Abstract
In order to study the effect of irrigation water salinity on the quantity and quality of fennel (Foeniculum vulgare Mill.) oil, and seed production, a field experiment was conducted in a split-plot based on randomized complete block design with three replications. The experimental treatments included ...
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In order to study the effect of irrigation water salinity on the quantity and quality of fennel (Foeniculum vulgare Mill.) oil, and seed production, a field experiment was conducted in a split-plot based on randomized complete block design with three replications. The experimental treatments included fennel genotype at four levels (German P11-820065, European 11486, and two indigenous genotypes including Lorestan and Hamedan) and water salinity at three levels (2 (control), 5, and 8 dS/m). The results showed that the effect of salinity was significant on all traits except α-pinene, myrcene, and essential oil percentage. Genotypes showed no significant difference in anethole, α-phellandrene, γ-terpinene, percentage, and essential oil yield. The interaction of salinity× genotype had a significant effect on all traits. Genotype P11-820065 had the highest essential oil percentage (3.90%) and yield (91.41 kg ha-1), and seed dry yield (2359.7 kg ha-1) between genotypes at control salinity level. With increasing salinity level, the seed and essential oil yield in non-indigenous genotypes decreased by a slope more than that of indigenous genotypes. Moreover, the content of anethole as the most important essential oil component of fennel increased to 5 dS/m salinity and then decreased. Based on the results of this study, under irrigation water salinity conditions, indigenous genotypes had higher economic efficiency due to their higher resistance to salinity stress. Water salinity affected only the content of essential oil components, but had no effect on its composition.
