Faezeh Zaefarian; Mohammad Mehdi Mirzaei; Shiva Taheri
Abstract
In order to investigate the effect of pretreatment of seeds with organic fertilizers on germination and seedling indices of three cultivar of black cumin seed, a factorial experiment was conducted in the form of a completely randomized block design in four replications in 2021. The treatments of this ...
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In order to investigate the effect of pretreatment of seeds with organic fertilizers on germination and seedling indices of three cultivar of black cumin seed, a factorial experiment was conducted in the form of a completely randomized block design in four replications in 2021. The treatments of this experiment were cultivar in three levels (Iranian, Indian and Syrian) and seed pretreatment in three levels of organic fertilizers: humic acid, biozinc and control (without pretreatment). Characteristics of germination percentage and rate, germination uniformity, root, shoot and seedling length, fresh and dry weight of root, shoot and seedling, seedling tissue water content, seedling length vigour index and allometric coefficient were measured. The results showed that the studied treatments and their interaction had a significant effect on most of the measured traits. The maximum and minimum germination percentages (93.67% and 83.33%, respectively) were allocated to Iranian and Indian cultivars; while the maximum germination uniformity (256.79 hours) was obtained in the Syrian cultivar pretreated with humic acid and the minimum germination uniformity (134.40 hours) was obtained in both Iranian cultivar without pretreatment and the Iranian cultivar pretreated with biozinc. Also, the highest seedling length and seedling length vigour index were recorded in Iranian cultivars pretreated with humic acid (4.20 cm and 400.21), respectively, and the lowest ones (1.42 cm and 113.01) in Syrian cultivar pretreated with biozinc. In general, in the present study, the effect of seed pretreatment using humic acid as organic fertilizer was positive in many germination indexes.
Mahboobe Mohammadi; Mohammad Hassan Rashed Mohassel; Ehsan Neamatollahi
Abstract
This experiment was designed to investigate the effect of seed coating with micronutrient elements, regulators and growth stimulants on the characteristics of germination and seedling establishment of sugar beet seeds, and in the form of a completely randomized design with four repetitions in the year ...
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This experiment was designed to investigate the effect of seed coating with micronutrient elements, regulators and growth stimulants on the characteristics of germination and seedling establishment of sugar beet seeds, and in the form of a completely randomized design with four repetitions in the year 2020, in the Razavi Seed and Plant Institute was carried out under laboratory and greenhouse conditions. The treatments of this experiment were different combinations of micronutrient elements, regulators and growth stimulants which included 29 treatments along with a control treatment (without coating). The results showed that germination percentage, daily germination rate, germination rate coefficient, root and shoot length, root and shoot dry weight, and seedling root length index were significantly affected. Seed coating treatments were applied. In general, treatment 21, including macro elements + micro elements + humic acid + Gibberellic acid, with a germination percentage of 97%, seedling length index 13.87, allometric coefficient 0.2232, as the best treatment, increasing the mean You have a witness about the treatment. Also, among the different seed coating treatments, treatment 22, including microelements + humic acid + Gibberellic acid + kaolin, had the highest percentage of seedling establishment with 95%. Seed coating with micronutrients, humic acid and Gibberellic acid had the greatest effect on improving seedling growth and quality and germination percentage.
mohammad behzad amiri; Parviz Rezvani Moghaddam; Mohsen Jahan
Abstract
An experiment based on CRD design with three replications was conducted in 2014 year, in Ferdowsi University of Mashhad, Iran. The experimental treatments included 7 types of eco-friendly inputs: Humic acid, Fulvic acid, Nitroxin (contains Azotobacter spp. And Azospirillum spp. Bacterias), Biophosphorous ...
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An experiment based on CRD design with three replications was conducted in 2014 year, in Ferdowsi University of Mashhad, Iran. The experimental treatments included 7 types of eco-friendly inputs: Humic acid, Fulvic acid, Nitroxin (contains Azotobacter spp. And Azospirillum spp. Bacterias), Biophosphorous (contains Bacillus sp. And Pseudomonas sp. bacterias), Biosulfur (contains Thiobacillus spp. Bacteria), Glomus mosseae, Glomus intraradices, and control. The results showed that organic acids of humic and fulvic increased germination percentage 25 and 20% and germination rate 58 and 33% compared to control, respectively. Germination percentage was 20, 25, and 24% more in biofertilizers of nitroxin, biophosphorous and biosulfur compared to control, respectively and germination rate under application of this fertilizers added 59, 24, and 50% compared to control, respectively. Humic acid, fulvic acid, nitroxin, biophosphorous, biosulfur, Glomus mosseae and Glomus intraradices reduced mean germination time 33, 35, 38, 19, 36, 36, and 16% compared to control, respectively. The highest radicle and plumule length obtained in treatment of humic acid and the highest radicle to plumule length observed in treatment of biosulfur. Fulvic acid increased radicle and plumule dry weight 51 and 38% compared to control, respectively. The highest and the lowest radicle to plumule dry weight obtained in treatments of Glomus intraradices (0.199) and control (0.124), respectively.
H. Zaremanesh; H.R. Eisvand; N. Akbari; A. Ismaili; M. Feizian
Abstract
In order to reduce the effects of salinity on germination and growth of Khuzestani savory by humic acid, two experiments were performed. The first experiment was done by priming the seeds with zero concentrations, 20, 40 and 60 mg / l of humic acid (H1, H2, H3 and H4, respectively) and germinating them ...
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In order to reduce the effects of salinity on germination and growth of Khuzestani savory by humic acid, two experiments were performed. The first experiment was done by priming the seeds with zero concentrations, 20, 40 and 60 mg / l of humic acid (H1, H2, H3 and H4, respectively) and germinating them in zero salinity (distilled water), 50, 25, 75 and 100 mM أNaCl (S1, S2, S3, S4 and S5, respectively) in petri dishes. In the second experiment in the greenhouse, humic acid at zero, 10, 20, 30 and 40 mg / kg soil (H1, H2, H3, H4 and H5, respectively) and salinity stress including zero, 50, 25, 75 and 100 mM sodium chloride (S1, S2, S3, S4 and S5, respectively). The results of the first experiment showed that germination percentage and rate were decreased by increasing in salinity, While, germination rate and percentage were improved by humic acid priming. Salinity also decreased the growth characteristics in pot experiment. While humic acid led to the improvement of these growth traits. With increasing salinity, electrolyte leakage increased, but it was reduced by humic acid. The positive results of using humic acid in reducing the harmful effects of salinity, in addition to laboratory (seed priming) were also proven in pots (soil application). Therefore, in general, according to the positive results of this study on improving the germination and growth indices of Khuzestani savory plant, the use of humic acid can be recommended to reduce the adverse effects of salinity.
Ali Asghar Armak; Hassan Feizi; Masood Alipanah
Abstract
With the aim of investigation of Humic and biological fertilizer sources together with nitrogen fertilizer on corm production on Torbat Heydarieh landrace, an experiment was conducted in research farm of University of Torbat Heydarieh in 2015-2016. The experiment consisted 18 treatments in which main ...
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With the aim of investigation of Humic and biological fertilizer sources together with nitrogen fertilizer on corm production on Torbat Heydarieh landrace, an experiment was conducted in research farm of University of Torbat Heydarieh in 2015-2016. The experiment consisted 18 treatments in which main factor was three levels of nitrogen fertilizer (0, 25, 50 kg/ha as urea) and sub factor was application of Biumic (micronutrients and acid humic), Super humic, Superhumic+Biumic, Humiful (acid humic), Nitrokara (nitrogen, phosphorus-soluble bacteria) and control. The experiment performed as split plot layout based on randomized complete block design with three replications. Results demonstrated that application of nitrogen had the significant effect on fresh weight and fresh yield of replacement corms. In 25 kg nitrogen treatment the fresh weight and fresh yield of replacement corms increased 5.6 and 8.2 percent in compared to control, respectively. In Super humic+Biumic treatment the fresh and dry weight of replacement corms increased 61.5 and 60.2 percent in compared to control, respectively. All of resource treatments significantly enhanced number of replacement corm. Overall, it seems that nitrogen fertilizer using had not considerable impact on corm traits, but employing of Humic and biological fertilizer could be very important on saffron corm production.
salim farzaneh; shahram khodadadi; Saeed Khomari; morteza Barmaki
Abstract
< p >The purpose of this study was to investigate the effect of seed coating with combinations of micronutrients, stimulants and growth regulators on emergence, plant establishment and early stages of sugar beet growth. This study was carried out in greenhouse conditions at Mohaghegh Ardabili University ...
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< p >The purpose of this study was to investigate the effect of seed coating with combinations of micronutrients, stimulants and growth regulators on emergence, plant establishment and early stages of sugar beet growth. This study was carried out in greenhouse conditions at Mohaghegh Ardabili University in 2018. Experiment was conducted as factorial in a completely randomized design with three replications. Seed washing (washing and not-washing), varity (Shekofa-Persian) and various combinations of micronutrients, stimulants and growth regulators which contains 5 were treated with a control (no cover-up) were the experimental factors. Comparison of the mean data from the experiment showed that among the sugar beet monogerm hybrids, Pars hybrid was superior in terms of establishment percentage. The results of this study showed that seed coating after washing increased the efficiency of sugar beet seed coating treatments. Among different treatments, seed coating treatments 1 [Zn+Mn+B (9, 16.5 and 8.5 g/ kg-1 seed Respectively)+ Gibberellic acid+ Ethylene+ Salicylic acid (1.2, 2 and 0.35 mL/ kg-1 seed, Respectively)] and 2 [Zn+Mn+B (9, 16.5 and 8.5 g/ kg-1 seed Respectively)+ Amino acid+ Humic acid + Seaweed extract (8, 12 and 12 g / kg-1 seed, Respectively)] had the most effect on accelerating emergence and improvement of seedling growth and maximum chlorophyll index and quantum yield of photosystem II were observed in these treatments.
Abstract
Arctium lappa is a medicinal plant of Asteraceae. Seeds have a little germination due to seed dormancy. In order to break dormancy and increase the germination of its seeds an experiment with 28 treatments in a completely randomized design with four replications (25 seeds). Treatments were consisting ...
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Arctium lappa is a medicinal plant of Asteraceae. Seeds have a little germination due to seed dormancy. In order to break dormancy and increase the germination of its seeds an experiment with 28 treatments in a completely randomized design with four replications (25 seeds). Treatments were consisting of chemical scarification with sulfuric acid solution 98% for 10 and 20 min, hormone treatments of 24 and 48 hours of Gibberellic acid (GA3) (300 & 500 ppm), moist prechilling for 7 and 14 days at +5 °C temperature, and combined moist prechilling and hormonal treatments, hot water (70 °C, for 10 and 15 min.) humic acid (54 kg/L). Results showed that the effect of treatments on percentage and rate germination of Arctium lappa was significant (P≤%5). The maximum coleoptile length, radicle length, seedling length, germination percentage and germination ratio was related to 14 days moist prechilling treatment with GA3 (500 ppm- 48h) (98/78 %). On the basis of the results and with regard to the negative effect of H2SO4 and hot water on the consequential growth of seedlings, usage of 14 days moist prechilling accompanied with application of GA3 was appropriate.
