Agriculture and horticulture
H. Alikhani; A. Rahimi; M. Shamsaddin Saied; R. Sahafi; M.R. Pirmoradi
Abstract
To study the effects of different levels of iron and zinc chelates application and supplementary irrigation on the quantity and quality of Ferula assa-foetida L. asafetida, a factorial experiment was conducted in a randomized complete block design with three replications in Neyriz City (Fars province) ...
Read More
To study the effects of different levels of iron and zinc chelates application and supplementary irrigation on the quantity and quality of Ferula assa-foetida L. asafetida, a factorial experiment was conducted in a randomized complete block design with three replications in Neyriz City (Fars province) in 2018. The experimental treatments included the supplementary irrigation (no irrigation (control), once, and twice irrigation) and zinc and iron chelates foliar application (no foliar application (control), Zn (two per thousand) foliar application, Fe (two per thousand) foliar application, and combined Fe (1.5 per thousand) and Zn (1.5 per thousand) foliar application). The studied traits included the number of leaves, leaf length, crown diameter, aerial parts dry weight, plant survival percentage, concentration of elements Fe, Mn, Cu, and Zn in the aerial parts, asafetida weight, and essential oil content. The results showed that the supplementary irrigation increased the number of leaves, aerial parts dry weight, and survival percentage of the plant. Twice supplementary irrigation resulted in the highest aerial parts Fe content. Also, the iron and zinc chelates foliar application increased the leaf length and survival percentage of the plant compared to the control. The highest aerial parts Fe content was obtained by iron chelate foliar application. Under both supplementary and control irrigation conditions, the zinc and iron chelates foliar application significantly increased the plant volume by 1.5 times, asafetida weight by 2 to 2.8 times, and essential oil content by 0.6 to 0.9%. In addition, under no supplementary irrigation conditions, the highest aerial parts Mn content of the plant was obtained by zinc chelate foliar application as well as combined iron and zinc chelates foliar application, but under once and twice supplementary irrigation conditions, the foliar application had no significant effect on this parameter. Under both supplementary and control irrigation conditions, the highest aerial parts Cu content of the plant was observed in no foliar application treatment. The Zn foliar application caused the highest aerial parts Zn content of the plant. Therefore, it seems that the supplementary irrigation with the foliar application of iron and zinc chelates could increase the asafetida yield and essential oil content in F. assa-foetida by improving the growth characteristics.
F. Sayadi; A. Rahimi; H. Dashti; A. Tajabadi pour
Abstract
In this study, the effects of drought and nitrogen were analyzed on morphological traits and dry matter allocation of Isabgul (Plantago ovata) at Vali-e-Asr University of Rafsanjan in 2010. The research was conducted using factorial experiment based on RCD design with 3 replications. The factors included ...
Read More
In this study, the effects of drought and nitrogen were analyzed on morphological traits and dry matter allocation of Isabgul (Plantago ovata) at Vali-e-Asr University of Rafsanjan in 2010. The research was conducted using factorial experiment based on RCD design with 3 replications. The factors included nitrogen (0, 60, 120 and 180 mg N.Kg-1 soil) and soil moisture (100, 80, 60, 40 % FC). Results indicated that drought, nitrogen and their interaction significantly affected seed yield and total dry weight. The highest seed yield (1.72 g.plant-1) was obtained at 120 mg N.Kg-1 soil which was 77% higher than that in control. In 80% FC treatment, using 120 mg N.Kg-1 soil caused 93% increase in total dry weight, compared to control. In addition, with increasing drought stress, dry matter partitioning benefited the root and root mass ratio (RMR) increased significantly. However, no significant changes were recorded for shoot mass ratio (SMR) and grain mass ratio (GMR). Also, with increasing nitrogen fertilizer, more dry matter was transferred to the leaves and less dry matter was transferred to the seed.
S. Mirzai; A. Rahimi; H Dashti; Sh. Maddah Hosseini
Abstract
In order to investigate the effects of supplementary calcium chloride and potassium nitrate on proline, protein content, chlorophyll and growth of Ammi (Carum copticum L.) under different salinity levels and nutrient solutions (NS), a RCBD design with factorial arrangement was conducted at the Agriculture ...
Read More
In order to investigate the effects of supplementary calcium chloride and potassium nitrate on proline, protein content, chlorophyll and growth of Ammi (Carum copticum L.) under different salinity levels and nutrient solutions (NS), a RCBD design with factorial arrangement was conducted at the Agriculture Research Field, Vali-e-Asr University of Rafsanjan, during September 2009. The treatments were three levels of salinity (0, 50 and 100 mMol) and five different nutrition solutions including: Control: Hoagland solution only (N1); Hoagland solution plus 20 mM CaCl2 in nutrition solution (N2); Hoagland solution plus 20 mM CaCl2 as spray (N3); Hoagland solution plus 20 mM KNO3 in nutrition solution (N4) and Hoagland solution plus 20 mM KNO3 as spray (N5). Results showed that proline content was significantly affected by salinity and the type of nutrient solution and their interactions. Increasing salinity, especially at 100 Mmol NaCl, significantly reduced chlorophyll a,b and total chlorophyll. Chlorophyll a, b and total chlorophyll content were not significantly affected by the type of nutrition solution. The highest and lowest protein content were observed by control and 100 Mm NaCl treatments respectively. The type of nutrient solution also influenced protein content. The highest and lowest protein contents were related to N3 and N5, respectively. Total dry weight and stem dry weight were significantly reduced by salinity while root dry weight was not affected by salinity. The highest leaf area was achieved on control and nutrition solution N5. Generally, it is concluded that Ammi could tolerate salinity up to 50 mMol NaCl and leaf spraying of Ca and K would be better to ameliorate salinity rather than using in nutrition solution.
A. Rahimi
Abstract
In order to investigate seed pre-treatment and irrigation interval effects on quantity and quality yield of the primed seeds of cumin (Cuminum ciminum L.), an experiment was carried out in research field of Vali-e-Asr University of Rafsanjan in 2009. The study was conducted as a Factorial experiment ...
Read More
In order to investigate seed pre-treatment and irrigation interval effects on quantity and quality yield of the primed seeds of cumin (Cuminum ciminum L.), an experiment was carried out in research field of Vali-e-Asr University of Rafsanjan in 2009. The study was conducted as a Factorial experiment based on RCBD with four levels of seed pre-treatment (Control or without pre-treatment, seed pre-treatment with distilled water, seed pre-treatment with -0.3 and -0.9 Mpa PEG solution) and different irrigation intervals (5, 7, 9 and 11 days). The results indicated that the seed yield was significantly decreased with increasing of irrigation intervals which was related to more decrease of umbel number and seed number per umbel. The results also indicated that the percentage of the essence was increased with increasing irrigation interval however it was decreased in 11-day irrigation interval. Thousand seed weight and harvest index were not affected by seed pre-treatment and irrigation intervals. The highest umbel number in plant (14.62) and seed number per umbel (13.16) were obtained in seed pre-treatment of -0.3 Mpa PEG (P3), and in 5 and 7-day irrigation intervals. Totally, the highest seed yield (628.7 kg.ha-1) was obtained in seed pre-treatment of -0.3 Mpa PEG (P3) and 5-day irrigation interval and the highest essence content (3.62 %) was obtained in pre-treatment of distilled water (P2) and 7-day irrigation interval.
