Pomology
A. Fatemi; A. Safari; M. Saeidi; Z. Kolahchi
Abstract
Introduction
Drought is the most important limiting factor for the yield and quality of products in the world. Fertilizer application can mitigate drought stress in plants. Most farmers prefer to use inorganic (chemical) fertilizers because of their fast impact on plant growth. The reasonable ...
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Introduction
Drought is the most important limiting factor for the yield and quality of products in the world. Fertilizer application can mitigate drought stress in plants. Most farmers prefer to use inorganic (chemical) fertilizers because of their fast impact on plant growth. The reasonable cost of inorganic fertilizers and their availability are the other reasons. However, the long-term effects of organic fertilizers on plant growth and soil fertility has been proved. The grapevines are one of the most important garden products in the world as well as in Iran. It has been reported that the application of biochar has significant effects on soil fertility as well as plant growth. Biochars have properties such as highly porous structure, high specific surface area, higher water holding capacity of the soil, the long-term stability in the soil. In addition, our previous study indicated that it could decrease the hazard of sodium in soil compared with compost. In Iran, the cultivation area of grapevines was the second grade after the pistachio cultivation area in 2019. According to statistical data on agriculture in 2019, the cultivation area of irrigated and rain-fed grapevines in Kermanshah province was 7710 and 1515 ha, respectively. According to this report, the production of irrigated and rain-fed grapevines in Kermanshah province in 2019 was 82718 and 1763 tons, respectively. The effect of application of some inorganic and organic fertilizers under drought stress on yield, water use efficiency, and some biochemical characteristics of the grapevine leaves cultivar Bidane-Ghermez has been previously studied. In this research, the effect of drought stress and the application of potassium sulfate, compost, and biochar on antioxidant activities of the grapevine leaves cultivar Bidane-Ghermez was investigated.
Materials and Methods
A greenhouse study with a factorial experiment based on a block of randomized completely design was conducted with fertilizer treatments including control, potassium sulfate (1250 mg kg-1), compost (5% w/w), and biochar (10% w/w) without and with drought stress conditions (80 and 40% FC, respectively) during 2017-2018. For this research, the biochar was produced from apple tree pruning under low oxygen conditions by slow pyrolysis at 400 ◦C. The compost was purchased from the municipal compost factory of Kermanshah province. To evaluate drought stress and inorganic and organic fertilizers' application on antioxidant enzymes activities, the superoxide dismutase and peroxidase activities and total soluble protein of grapevine leaves were determined. The data were analyzed by ANOVA and the mean of studied characteristics was compared by Duncan’s test at 5% probability level using SAS software.
Results and Discussion
the results indicated that the interaction effect of fertilizers treatments and drought stress on the superoxide dismutase and peroxidase activities as well as total soluble protein was significant (P<0.01). Under drought stress conditions, among fertilizers’ treatments, the activity of superoxide dismutase for potassium sulfate was significantly lower than compost and biochar treatments (P<0.01). The results also showed that the peroxidase activity for compost was significantly higher than potassium sulfate and biochar treatments (P<0.01). Besides, the highest total soluble protein amount was found for biochar treatment (P<0.01).
Conclusion
according to the results of this study, it can be concluded that the increase of total soluble protein of grapevine leaves under drought stress conditions by biochar application contributed to the increase of superoxide dismutase and peroxidase activities also increasing the bioavailability of macro-and micronutrients. Biochar application increased significantly the potassium concentration of the leaves of the grapevines. Potassium regulates water movement at the plant and also provides a higher relative water content of grapevine leaves. Moreover, potassium decreases the non-stomatal effects are also attributed to stomatal closure during drought stress conditions. Furthermore, potassium contributes to protein synthesis. Biochar application also increased the phosphorus, copper, and magnesium of the leaves of the grapevine. Higher concentration of phosphorus under drought stress conditions caused the grapevine leaves to suffer less from phosphorus deficiency. Copper exists in superoxide dismutase and is considered a key player in superoxide detoxification. Under drought stress conditions, higher manganese concentration by biochar application resulted in more protection of the cellular membrane against Reactive Oxygen Species (ROS). For fertilizer recommendation in order to reduce drought stress effects on some antioxidant enzymes activities of Bidane-Ghermez grapevine leaves, the application of biochar is recommended first then potassium sulfate and compost.
Pomology
Asiyeh Safari; Akram Fatemi; Mohsen Saeedi; Zahra Kolahchi
Abstract
Introduction: the lack of water resources in arid and semi-arid regions is one of the most important limiting factors of the growth of plants, especially fruit trees. Grapevines are one of the most important horticultural products in the world as well as in Iran. The water content of plant tissues, their ...
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Introduction: the lack of water resources in arid and semi-arid regions is one of the most important limiting factors of the growth of plants, especially fruit trees. Grapevines are one of the most important horticultural products in the world as well as in Iran. The water content of plant tissues, their growth, and the availability of different nutrients in the soil are significantly reduced under water stress conditions. Therefore, the successful production of the plant under water stress conditions depends on the management of plant nutrition. By application of organic and chemical fertilizers, the physical, chemical, and biological properties of soil can be improved. Besides, it can reduce the adverse effects of drought stress conditions.
Materials and Methods: To evaluate the effect of compost, biochar, and potassium sulfate application on dry matter, relative water content (RWC), chlorophyll a, b, total, and carotenoid contents, as well as the concentration of macro-and micronutrients of leaves of grapevines ‘Bidane-Ghermez’ under two drought stress conditions, this experiment, was conducted in the research greenhouse during 2017-2018. The experiment was carried out as a factorial experiment based on a randomized complete block design (RCBD) with two factors and four replications. The first factor, without drought stress conditions (80% field capacity (FC)), and drought stress conditions (40% FC), and fertilizer treatments included potassium sulfate (1.25 g.kg-1), compost (5 % w/w), and biochar (10% w/w).
Results and Discussion: The results of the analysis of variance (ANOVA) showed that the interaction effect of drought stress ×fertilizers application was not significant for dry matter, and RWC (P>0.05). Also, the results of ANOVA indicated that the simple effect of drought stress conditions was not significant for dry matter but the simple effect of fertilizer application was significant for leaf dry matter (P<0.01). Without drought stress conditions, there were no significant differences in leaf dry matter between different fertilizer treatments. However, under drought stress conditions, the highest dry matter of grapevine leaves was observed in biochar, compost, and potassium sulfate, respectively. Also, there were no significant differences in leaf dry matter of grapevine between biochar treatment under drought stress conditions and all fertilizer treatments without drought stress conditions. The simple effect of drought stress conditions was significant for leaf dry matter (P<0.05). The results of ANOVA revealed that the interaction effect of drought stress ×fertilizer application was not significant for chlorophyll a, b, total, and carotenoid contents of grapevine leaves. However, the simple effects of drought stress conditions and fertilizer application were significant for chlorophyll a, b, total, and carotenoid contents of grapevine leaves (P<0.01). Relative water, chlorophyll a and carotenoid contents of grapevine leaves were not significantly different among fertilizers treatments. The increase of chlorophyll a/b ratio compared with control was changed in order biochar>potassium sulfate>compost. Moreover, the interaction effect of drought stress ×fertilizer application was significant for nitrogen (N), magnesium (Mg), ferrous (Fe), zinc (Zn), and copper (Cu) concentrations of grapevine leaves (P<0.01). The ANOVA indicated that the simple effects of drought stress conditions and fertilizer application had a significant effect (P<0.01) on macro- and micro-elements concentrations of grapevine leaves. By application of biochar, the concentration of P, K, Mg, and Cu of grapevine leaves significantly were higher than compost and potassium sulfate applications. This consequently resulted in higher chlorophyll a/b ratio and dry matter of grapevine leaves in biochar treatment for control under drought stress conditions.
Conclusion: Based on the results of this research, it can be concluded that the application of fertilizers reduced drought stress effects on biochemical characteristics and dry matter of grapevine leaves. According to the results, at first the application of biochar is recommended, then potassium sulfate and compost. Our previous results indicated that by application of compost, the available sodium (Na) of soil was increased 8.53 and 60.52 % for potassium sulfate and compost treatments compared to control, respectively. While, by application of biochar, the available Na of soil reduced 3.73 % in comparison with control. This finding is so important regarding the Na effects on soil structure, the toxicity of Na for plants as well as the interaction between Na and K. Considering K is a critical element to regulate the water content of plant tissue and reduces the hazards of water stress conditions, the higher concentration of Na prevents K uptake from the soil solution by plant.
Mohammad Behzad Amiri; Parviz Rezvani Moghaddam; Mohsen Jahan
Abstract
Introduction: Maintenance of soil fertility as a permanent bed for continuous production of agricultural products is one of the most important issues affecting the sustainability of food production. In order to achieve healthy food production, application of ecological inputs such as organic fertilizers ...
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Introduction: Maintenance of soil fertility as a permanent bed for continuous production of agricultural products is one of the most important issues affecting the sustainability of food production. In order to achieve healthy food production, application of ecological inputs such as organic fertilizers are inevitable. Organic fertilizers are fertilizer compounds that contain one or more kinds of organic matter. They can improve the soil’s ability to hold water and nutrients. They create a beneficial environment for earthworms and microbial organisms that break the soil down into rich, fine humus. Compost is organic matter that has been decomposed and recycled as a fertilizer and soil amendment. Compost can greatly enhance the physical structure of soil. The addition of compost may provide greater drought resistance and more efficient water utilization. Vermicompost is the final product of composting organic material using different types of worms, such as red wigglers or earthworms, to create a homogenized blend of decomposed vegetable and food waste, bedding materials and manure. Vermicompost helps store nutrients and keeps them safe from leeching and irrigation, functioning to balance hormones within plant physiology, and adding beneficial biology to soil. Vermicompost improves soil aeration, enriches soil with micro-organisms (adding enzymes such as phosphatase and cellulose), attracts deep-burrowing earthworms already present in the soil and improves water holding capacity, enhances germination, plant growth and crop yield, improves root growth and structure. Cow manure is an excellent fertilizer containing nitrogen, phosphorus, potassium and other nutrients. It also adds organic matter to the soil which may improve soil structure, aeration, soil moisture-holding capacity, and water infiltration. Plant density is the number of individuals of a given plants that occurs within a given sample unit or study area. Planting density can impact the overall health of plants. Plantings that are too sparse (the density is too low) may be more susceptible to weeds, while planting that are too dense might force plants to compete over scarce nutrients and water and cause stunted growth. Despite of many researches on the effect of organic fertilizers and plant density on different crops, information on the effects of these factors for many medicinal plants is scarce, therefore, in this study effect of organic fertilizers and plant density on morphological characteristics and yield of Echium amoenum in a low input cropping system was studied.
Materials and Methods: In order to evaluate the effect of different fertilizers on quantitative characteristics of Echium amoenum at different plant densities, a factorial experiment based on RCBD design with three replications was conducted in 2011-2013 growing seasons, in Ferdowsi University of Mashhad, Iran. Experimental factors included three plant densities (10, 5 and 3 plant per m2) and five different types of organic and chemical fertilizers (municipal waste compost, vermicompost, cow manure, chemical (urea) fertilizer and control).
Results and Discussion: The results showed that with reduction of plant density, effect of organic fertilizers on increasing the flower yield was exacerbated and at the lowest density, municipal waste compost, vermicompost and cow manures increased flower yield 112, 79 and 223% compared to control, respectively. In all studied densities, length of lateral branches in conditions of organic fertilizers application was more than control. Municipal waste compost, vermicompost, cow manure and chemical fertilizer increased total phenol 106, 54, 66 and 173% compared to control, respectively. In plant mean density (5 plant per m2), application of municipal waste compost, vermicompost and cow manure increased total anthocyanin 83, 74 and 57% compared to control, respectively. In general, result of this study showed that application of organic and chemical fertilizers at optimal plant densities, can improve growth characteristics and quantitative and qualitative yield of Echium amoenum.Organic fertilizers are the most significant resources for development of agricultural soil quality and increase in the yield of different medicinal plants. It has been reported that this ecological inputs provide favorable conditions for plant growth and development through improvement of physical, chemical and biological properties of the soil, therefore, it can be concluded that improvement of the most studied traits in the present study were due to use of organic fertilizers. Fallahi et al., (20) have reported the positive effects of organic fertilizers on the improvement of quantitative and qualitative characteristics in chamomile (Matricaria chamomilla L.). It seems that plants compete with each other over scarce nutrients and water in high plant density and cause stunted growth. Some other studies have reported that suitable plant density can increase the growth and yield of some medicinal plants such as coriander (Coriandrum sativum L.), Ajwain (Carum copticum L.), lemon balm (Melissa officinalis L.) and anise (Pimpinella anisum L.).
Conclusion: In general, results of this study showed that application of organic and chemical fertilizers at optimal plant densities, while improving growth and yield characteristics of Echium amoenum flower can be ensured health of production of this important medicinal plant.
Mojgan Parvandi; Mohammad Farsi; Mohsen Ashrafi
Abstract
Introduction: The white button mushroom does not produce remarkable yield in the third flash. Nutritional deficiency and the inability of this mushroom to efficient use of compost are mentioned as its reasons. Basically, compost includes two major food components, lignocellulose and microbial biomass. ...
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Introduction: The white button mushroom does not produce remarkable yield in the third flash. Nutritional deficiency and the inability of this mushroom to efficient use of compost are mentioned as its reasons. Basically, compost includes two major food components, lignocellulose and microbial biomass. But this microbial biomass provides just 10% of button mushroom food needs. According to research studies, differentenzymes in both white button mushroom and oyster mushroom are responsible for decomposition of lignin compounds in compost media, from begin of mycelium grows to the end of fruiting. Lacasse, manganese peroxidase, lignin peroxidase, glyoxal oxidase enzymes contribute to degradation of lignin compounds in degradation mushroom has proven by researchers however itis dependent on mushroom types. Manganese peroxidase enzyme (EC. 1.11.1.13) is an extracellular parser lignin enzyme that has a central peroxidase core. Manganese peroxidase enzyme oxidizesMn2+ to Mn3+ and then Mn3+ oxidizes phenolic structure to fonoxile radical. Produced Mn3+ is very active and makes complex by chelating organic acids that is produced by mushrooms such as oxalate or malate. Mn3+ ions become stable by helping of these chelates and it can penetrate through materials such as wood. On the other hand, in recent years, plant biotechnology provides new solutions for old problems such as use of microorganisms, particularly using bacteria for gene transfer and improvement of superlatives. For a sample of this method, Agrobacterium-mediated transformation system can be noted. In addition, the use of suitable promoters for heterologous genes expression in suitable hosts is an important strategy in functional biotechnology that has been raised in edible mushroom genetic engineering. The lack of efficient and sufficient use of compost, low power of white button mushroom in competition with other rivals, lack of yield per area unit due to production costs, pests and diseases, low flexibility and adaptability with environmental conditions changes are some of the problems that the mushroom reformers are faced. Unlike the great efforts made by researchers, conventional breeding techniques to produce the A. bisporus mushroom only have been led to produce a few new races. Therefore, todays some problems associated with traditional methods of breeding of edible mushrooms, including the need to provide races that have desired characteristics, the traditional method performance tests and low chances of success in the transfer of important agronomic characteristics such as functionality and disease resistance. So, they almost have been replaced with new biotechnology methods. Anexample of this method is to manipulateproperties transformation for the particular purpose. Modification of both expression or type of lignin degrading enzyme are possible solutions to deal with this problem, but these are not applicable or are difficult to be done with traditional breeding programs. In recent years, gene transformation mediated with Agrobacterium routinely is used for gene transformation to mushrooms and is proposed as a method for removing limitations of white button mushroom breeding.
Materials and Methods: In this research, the oyster mushroom strain Florida was used as the source of manganese peroxidase (mnp) gene and white button mushroom strain 737 gill and cap tissue were used as transformation host. Agrobacterium strain LBA4404 harbors p133H88-FM plasmid thatcontainsmnp gene of oyster mushroom and also hph gene under control of gpdII promoter of the button white mushroom strain IM008 was used as a transformer. Selection medium containing 30 mg/ml Hygromycin B and was used for selecting transformed explants. To confirm transformation, PCR with specific primers of mnp and hph genes was performed on genomic DNA of selected colonies.
Results and Discussion: Results showed the gill tissue explants, with transformation rate 5%, have a better response to applied transformation method than cap tissue explants, with transformation rate zero percent. As expected, polymerase chain reaction with specific primers ofhph and mnp genes amplified 1049 and 1086 bp fragments and verified the transformation of mycelium's grown on selection medium. It seems that Bacterial strain and also used plasmid were one of the responses for observed low rate transformation which is in accordance with leach and co-workers study. Finally, we could propose that cap tissue is more suitable for further gene transformation of this mushroombecause of high transformation rate of cap tissue.
Farima Doaei; Parviz Rezvani Moghaddam; Reza Ghorbani; Ahmad Balandary
Abstract
Introduction: In order to response to greater demand for wild medicinal plants consumption, it has been recommended that wild medicinal plants can be brought into cultivation systems. Cichorium pumilum Jacq. is an annual species of Asteraceae family, that has a long history of herbal use and is especially ...
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Introduction: In order to response to greater demand for wild medicinal plants consumption, it has been recommended that wild medicinal plants can be brought into cultivation systems. Cichorium pumilum Jacq. is an annual species of Asteraceae family, that has a long history of herbal use and is especially of great value for its tonic effects upon the liver and digestive tract. The root and the leaves of chicory are digestive, hypoglycemic, diuretic, laxative and tonic. Using chemical fertilizers can be easily lost from soils through fixation, leaching or gas emission that can lead to reduced fertilizer efficiency. The applications of organic fertilizers such as compost and vermicompost can be considered as a good management practice to increase cropping system sustainability, reducing soil erosion and improving soil physical, chemical and biological properties. Soil microorganisms have a significant role in regulating the dynamics of organic matter breakdown and the availability of plant nutrients such as nitrogen, phosphate and sulfur.
Materials and Methods: For evaluating the effects of organic, mineral and biological fertilizers on seed yield and yield components of dwarf chicory (Cichorium pumilum Jacq.), a field experiment was conducted at the Agricultural Research Station, the Ferdowsi University of Mashhad (36016/ N, 59036/ E, elevation 985 m) during growing season of 2011-2012. The experimental layout was factorial based on randomized complete block design with four replications. The experimental treatments were all combination of organic and chemical fertilizers (compost 4 t/ha, vermicompost 4 t/ha, urea fertilizer 130 kg/ha and control) and biological fertilizer (biosulfur biofertilizer + pure sulfur 100 kg/ ha and control). Before conducting the experiment, soil sample were taken from the depth of 0-30 cm, and physical and chemical characteristics of the soil and also used compost and vermicompost were determined. All fertilizer treatments were added to the soil and mixed well with the soil before sowing. In order to avoid leaching, all urea fertilizer was divided to two parts and these were used in two dates during the growth period. Cichorium pumilum Jacq seeds were hand sown in 2.5 ×4 m plots in five rows and with plant density 20 plants m−2. Before harvesting the grain, five plants were randomly selected in each plot from 2500 cm2 (50×50cm) and their characteristics and traits such as plant height, number of tiller per plant, number of branch per plant, number of inflorescence per plant, number of seed per inflorescence, number of seed per plant and seed weight were determined. For statistical analysis, analysis of variance (ANOVA) and Duncan multiple range test at 0.05 level were performed using SAS version 9.1 (SAS Institute Inc., Cary, NC, USA).
Results and Discussion: The Results indicated that studied factors and their interactions had not significant effect on morphological traits (plant height, number of tiller per plant, number of branch per plant) and on yield components of seed such as: number of seed per inflorescence, 1000-seed weight, seed weight per plant, seed yield and harvest index (HI). The results showed that organic and chemical fertilizers had significant effect on number of inflorescence per plant, number of seed per plant, biological yield (p< 0.05).The highest number of inflorescence per plant, number of seed per plant and seed weight per plant were observed in chemical fertilizer + biosulfur biofertilizer treatment. The highest seed yield (1489 kg.ha-1) obtained from compost + biosulfur biofertilizer treatment. Chemical fertilizer + biosulfur biofertilizer treatment (7576 kg.ha-1) produced the highest biological yield. It seems that because of high solubility of chemical fertilizer, nutrients are immediately available to the plants therefore, plants can use nutrients of chemical fertilizer faster than other fertilizers. Biofertilizer and organic fertilizer can improve soil properties and also through nutrient supply, improves plant growth.
Conclusion: In this study, it seems that the morphological traits (plant height, number of tiller and number of branches per plant) and yield components such as the number of seeds per inflorescence and seed weight were influenced by genetic characteristics and fertilizer treatments had little effect on mentioned traits and the plant was able with nutrient available in soil, overcome its needs. Overall in this study, results showed that the use of compost combination with biosulfur biofertilizer had positive effect on studied traits of dwarf chicory and use of them can be an effective step towards sustainable production and replacement use of chemical fertilizers.
Mohammad Taghi Darzi; Bijan Sadeghi Nekoo
Abstract
Introduction: Hyssop (Hyssopus officinalis) is a perennial herb which is cultivated in temperate regions of Asia, Europe and America. The essential oil of hyssop is widely used as traditional drug in some of the parts of Asia and Europe to treat respiratory diseases. Hyssop is also used in food, pharmaceutical, ...
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Introduction: Hyssop (Hyssopus officinalis) is a perennial herb which is cultivated in temperate regions of Asia, Europe and America. The essential oil of hyssop is widely used as traditional drug in some of the parts of Asia and Europe to treat respiratory diseases. Hyssop is also used in food, pharmaceutical, flavor and cosmetic industries throughout the world. It is mainly used for antispasmodic, stomachic, antifungal, relax spasm and cough treatment. Applying organic fertilizers and biofertilizers such as compost, vermicompost and nitrogen fixing bacteria contain Azotobacter and Azospirillum has led to a decrease in chemical fertilizers consumption and has provided high quality agricultural products. Several studies have shown that organic and bio-fertilizers application such as vermicompost and nitrogen fixing bacteria can increase essential oil content of medicinal plants of dill, basil and fennel.The main object of this work was to record the best suitable treatment of organic and biological fertilizer to obtain highest yield of Hyssop.
Materials and Methods: A field experiment, arranged in a randomized complete blocks design with eight treatments and three replications at research field of the Agriculture Company of Ran, Firouzkuh, Iran during the growing season of 2012. The treatments were (1) 20 t/ha compost, (2) 12 t/ha vermicompost, (3) biofertilizer [inoculated seeds with Azotobacter and Azospirillum], (4) 10 t/ha compost + 6 t/ha vermicompost, (5) 20 t/ha compost + biofertilizer, (6) 12 t/ha vermicompost + biofertilizer, (7) 10 t/ha compost + 6 t/ha vermicompost + biofertilizer and (8) control [without fertilizer application]. Inoculation was carried out by immersing the hyssop seeds in the cells suspension of 108 CFU/ml for 15 min. The required quantities of compost and vermicompost were applied and incorporated to the top 5 cm layer of soil in the experimental beds before planting of hyssop seeds. Each experimental plot was 3 m long by 2.28 m wide with the spacing of 15 cm between the plants and 38 cm between the rows. There was a space of one meter between the plots and 2 meters between replications. Hyssop seeds were directly sown by hand. There was no incidence of pest or disease on hyssop during the experiment. Weeding was done manually and the plots were irrigated weekly (as trickle irrigation system). All necessary cultural practices and plant protection measures were followed uniformly for all the plots during the entire period of experiment. In this study, some morphological traits and yield hyssop including plant height, branch no./plant, fresh weight of plant, dry weight of plant, herb fresh yield, herb dried yield, essential oil content and essential oil yield were evaluated. In order to determine herb fresh yield and herb dry yield, 1 m-2 plants were used at the harvest time (full blooming). For determine the essential oil content (%), About 100 g dried herb of hyssop (dried in shadow) as sample from the each plot were selected and then were subjected to hydro-distillation (Clevenger type apparatus) for 3 hours. Essential oil yield also was calculated by using essential oil content and herb dried yield. Analysis of variance by using SAS software and mean comparisons by Least Significant Difference Test (LSD) (at the 5% probability level) was done.
Results and Discussion: The present results have shown that the highest plant height and branch no/plant in treatment of integrated application of 20 t/ha compost,biofertilizer,the maximum fresh weight of plant and herb fresh yield in treatment of application of 20 t/ha compost were obtained. Also, the highest dry weight of plant in treatment of integrated application of 10 t/ha compost, 6 t/ha vermicompost and biofertilizer and the highest herb dried yield, essential oil content and essential oil yield in treatment of integrated application of 12 t/ha vermicompost and biofertilizer were obtained. Vermicompost application through high ability for absorption of mineral nutrients like N, P and K by plants and then increase of biomass amount has a positive effect on secondary metabolites concentration such as essential oil and subsequently the enhanced essential oil content. Increased essential oil yield in treatment of 12 tonnes vermicompost per hectare and biofertilizer can be owing to the improvement of yield attributes such as herb dry yield and essential oil content.
Conclusion:Integrated application of organic manures and biofertilizer positively influenced morphological traits and yield of hyssop, as the highest herb dry yield, essential oil content and essential oil yield were obtained in treatment of integrated application of 12 t/ha vermicompost and biofertilizer and treatment of integrated application of 10 t/ha compost, 6 t/ha vermicompost and biofertilizer. On the base of research results, organic amendments and biofertilizer application can be caused in improvement of morphological characters and yield of hyssop.
Mahsa Salehi; Nematollah Etemadi; Naser Honarjoo; Mehrdad Jafarpour
Abstract
In order toa desirable growth, plants need fertile soil which has the availability of nutrient elements in it. Sometimes, in spite of having access to the nutrient elements, decrease yield, due to undesirable physical situation. Stock (Matthiolaincana cv. Column Crimson) is one of the potting flower ...
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In order toa desirable growth, plants need fertile soil which has the availability of nutrient elements in it. Sometimes, in spite of having access to the nutrient elements, decrease yield, due to undesirable physical situation. Stock (Matthiolaincana cv. Column Crimson) is one of the potting flower that its growth medium traditionally including HAWAR soil, basin sediment and untreated waste municipal. Due to decrease reach to mentioned soils, so that, it is necessary to replace a growth medium and surveying the effect of different organic matter in pot stock. Garden soil was used as main source of medium and as control. In this study, treatments including garden soil amendment by 4 and 8 % (w/w) of different organic matter (untreated waste municipal, beet pulp, leaf mold, and municipal compost). Another treatment was traditional growth medium. This research was performed in a randomized complete block design with four replications. Result showed that manure treatments on plant height, floret diameter, carbohydrate content had significant different (p
Rana Gholinegad; Alireza Sirousmehr; Barat Ali Fakheri
Abstract
In order to study the effects of drought stress and organic fertilizers (compost and vermicompost) on some physiological and biochemical characteristics of borage, an experiment with complete randomized block design in split plot arrangement with three replications was conducted in Zabol University, ...
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In order to study the effects of drought stress and organic fertilizers (compost and vermicompost) on some physiological and biochemical characteristics of borage, an experiment with complete randomized block design in split plot arrangement with three replications was conducted in Zabol University, Zabol, Iran. The treatments included 3 levels of stress as a witness or 100% of field capacity, 80%field capacity(mild stress) and 60% field capacity (tension) as the main factor and use organic fertilizers, including control (nofertilizer), consuming 40 tons of compost per ha, and consumes 4 ton of vermicompost per ha, were considered as minor. Results showed that chlorophyll index (SPAD) decreased with increasing severity of dehydration and the amount of chlorophyll fluorescence were added. The highest chlorophyll a (11.383 mg/g) in conditions stress and application of compost obtained and it was reduced with increasing stress intensity level and the lowest (5.763mg/g) in severe stress and lack of fertilizer application, respectively. The same trend was observed for total chlorophyll content. Most of the enzymes catalase, ascorbate peroxidase and polyphenol oxidase in conditions of severe stress and lack of application and at least 100% of field capacity and compost application, respectively. Proline at 60% field capacity and no application of any fertilizer (20.213 mmol/g wet weight) was a significant difference with other compounds treatments. Drought stress affected the dry weight of the borage plant and cut it and dry yield (6.134826 kg/per ha) in the water level control was not a significant difference with mild stress (80% field capacity). Overall production in drought conditions and the amount of enzyme scavengers, hydrogen peroxide and free radicals increases , then, in order to have acceptable performance of dry borage, crop irrigation to 80% capacity seems appropriate.
Ali Mohammadi Torkashvand; Marziyeh Alidoust; Ali Mahboub Khomami
Abstract
Peanut shelles as a waste of cultivated peanuts are produced in a considerable amount in Guilan province, Iran, that its compost can be used as an available resource in replacement of peat as growth medium of ornamental plants.This experiment was carried out to determine the possibility using of peanut ...
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Peanut shelles as a waste of cultivated peanuts are produced in a considerable amount in Guilan province, Iran, that its compost can be used as an available resource in replacement of peat as growth medium of ornamental plants.This experiment was carried out to determine the possibility using of peanut shells compost as an appropriate medium of Dracaena. The control treatment was a medium of peat: perlit at 2:1 ratio that in a compeletly randomized design, the peat was replaced by composted peanut shelles by 15, 30, 45, 60, and 100% V/V. The experiment had three replications. This study was carried out in Ornamental Plant Research Station of Lahijan, Guilan province, Iran. Chemical properties of media including EC, pH, total nitrogen, carbon, C/N ratio; and available concentrations of phosphorus, potassium, calcium, sodium and magnesium were measured. The growth factors including plant height, leaf number, dry weight of stem and leaf were evaluated.The concentrations of nitrogen, phosphorus, potassium, calcium, magnesium, iron and manganese in leaf were also measured. Results showed the peanut shell comopst because of decreasing C/N ratio and availability of nutrients in media, caused to increase plant height, leaf number and dry weight of shoot compared to control. The greatest rate of growth was achived in 15% and 45% compost treatments and its lowest obtained in 100% V/V treatment and control. In couclusion Peanut shell comopste can be used as alternative substitution of expensive peat in the growth media of ornamental plants.
