Agriculture and horticulture
F. Noormand Moaied; B. Abaszadeh; N. Valizadeh
Abstract
Background and objectives: Savory (Satureja spp.) has a special position among medicinal plants due to its valuable compounds, such as thymol and carvacrol. Savory is one of the genera of the Lamiaceae family, and this genus has 16 species of annual and perennial herbaceous plants in Iran. Due to the ...
Read More
Background and objectives: Savory (Satureja spp.) has a special position among medicinal plants due to its valuable compounds, such as thymol and carvacrol. Savory is one of the genera of the Lamiaceae family, and this genus has 16 species of annual and perennial herbaceous plants in Iran. Due to the high amount of essential oil, Satureja species are highly economically and medically important in the food, cosmetic, health, and pharmaceutical industries. This research aimed to increase the quantitative and qualitative yield of Satureja sahendica Bornm. essential oil with appropriate plant nutrition.Methodology: This research was carried out under irrigation conditions in the form of a randomized complete block design with eight fertilizer treatments (no fertilizer, N50, P25, K25(kg.ha-1), Cow Manure(30, 60 ton.ha-1), Cow Manure(30, 60 ton.ha-1)+ N50, P25, K25(kg.ha-1), Vermi-compost(5 ton.ha-1), Vermi-compost(5 ton.ha-1)+ N50, P25, K25(kg.ha-1)) in three replications over four years (2017-2020) in East Azarbaijan province. Cultivation was indirect and through grafting. Seedlings were prepared in greenhouse conditions by growing seeds in seedling trays with a mixture of peat moss, cocopeat, and perlite in a ratio 4:2:1. The treatments were applied only once, simultaneously with the plot preparation and before the planting stage. This was done by hand spraying and mixing with the soil. The plot dimensions were 4 x 3 meters, the distance between the planting lines was 50 cm, and the distance between the plants on the line was set to 30 cm. The irrigation method was drip irrigation twice a week in the early stages of growth and once a week after establishment. Weed weeding was also done during the growing season. Plant height, flowering date, crown area, and green shoot yield were measured during the cropping season. Essential oil was extracted by distillation with distilled water, and essential oil was analyzed by gas chromatography (GC) and gas chromatography coupled with mass spectrometry (GC/MS).Results: Based on the results, all traits showed a significant difference between different fertilizer treatments. The highest yield of flowering branches was 1974 kg.ha-1 (6% increase compared to the control) and the yield of essential oil was 22.25 kg.ha-1 (9% increase compared to the control), and the highest quality of essential oil (sum of phenolic compounds thymol and carvacrol) is 61.89% (18% increase in comparison to the control) with treatment of Cow Manure(60 ton.ha-1)+ N50, P25, K25(kg.ha-1) were obtained. To be economical, cow manure (60 tons per hectare) can also be used alone. With regards to 50% flowering, the latest product was a control treatment (without fertilizer) with 160.25 days, while the earliest product was Cow Manure (60 tons.ha-1) +N50, P25, K25 (kg.ha-1) with 155.33 days. The main components of the essential oil were Thymol, p-cymene, and γ-terpinene, respectively. The results of the average percentage of phenolic compounds thymol and carvacrol as essential oil quality in each fertilizer treatment and each year showed that the average quality of essential oil in the first year was 53.13%, in the second and third years it was 63.98 and 63.54, respectively. The percentage decreased to 47.93% in the fourth year.Conclusion: The use of fertilizer treatments, especially animal manures, along with chemical fertilizers, in addition to increasing yield, also causes early ripening. Early harvesting of the first layer allows the second layer to use the growing season optimistically and avoid autumn cold. As the plant age increases, the yield of essential oil increases, but the product is later, and the quality also decreases. Accordingly, Cow Manure(60 ton.ha-1)+ N50, P25, K25(kg.ha-1) should be applied to S. sahendica until the fourth year to produce adequate yields.
Agriculture and horticulture
S.M. Hasani; D. azadfar; M.H. Arzanesh; Z. Saeedi; S.H. Matinkhah
Abstract
The ecological, economic, and social benefits of agroforestry operations over the integrated agriculture are well-recognized, but failure to use the fertilizers and low profitability of the agroforestry systems may be a reason for the low acceptance of these systems by farmers. In this study, a factorial ...
Read More
The ecological, economic, and social benefits of agroforestry operations over the integrated agriculture are well-recognized, but failure to use the fertilizers and low profitability of the agroforestry systems may be a reason for the low acceptance of these systems by farmers. In this study, a factorial split-split plot experiment was conducted in a randomized complete block design with three replications to investigate the effects of bio-, organic, and chemical fertilizers on the improvement of yield, qualitative traits, and the greater profitability of this system. The medicinal species at two levels, fertilizer at five levels, and tree species at two levels were considered as the main-, sub-, and sub-sub plots, respectively. The tree species including cherry (Prunus avium L.) and walnut (Juglans regia L.) were selected for the agroforestry system and the medicinal species including coriander (Coriandrum sativum L.) and flixweed (Descurainia sophia (L.) Schur) were cultivated understorey of this system. Four fertilizer treatments including the organic manure (3 kg.m-2)+humic acid organic fertilizer (AgriPlus) (0.5 kg.100 l-1 of water.100 m-2), Mycomix endomycorrhizal biofertilizer (100 g.m-2), Bioazospir bacterial fertilizer (200 g.100 kg of seed), and chemical fertilizer based on the soil analysis (75 kg of urea, 150 kg of triple superphosphate, and 150 kg of potassium sulfate at the beginning of sowing+100 kg of potassium sulfate 30 days after sowing and another 100 kg two months after sowing per hectare) were examined with the control (without fertilizer). The results showed that the plant height and 1000-seed weight at the 5% probability level and the plant fresh and dry weight, number of seeds per spike, seed yield per plant and hectare, and percentage of protein, nitrogen, phosphorus, and potassium per seeds at the 1% probability level were significantly affected by the fertilizer treatments in flixweed. In coriander, the plant height, leaves and stems fresh yield, number of seeds per umbel and plant, biological and economic yield, and percentage and essential oil yield were significantly affected by the fertilizer treatments at the 1% probability level, too. In flixweed, the organic fertilizer, bioazospir, mycorrhiza, and chemical fertilizer caused the highest amount of studied traits, respectively and the control treatment caused the lowest one. In coriander, the mycorrhizal fertilizer, organic fertilizer, bioazospir, and chemical fertilizer resulted in the highest amount of studied traits, respectively and the control treatment caused the lowest one. Also, both medicinal plants showed much better performance in the combined cultivation with the cherry tree. Among the various combinations in the cultivation, the combined cultivation of coriander with cherry tree was selected as the best one.
Agriculture and horticulture
M. Nosrati Momvandi; E. Zeid Ali; M.J. Zarea; H. Mumivand; M. Kiani
Abstract
To investigate the effects of planting date (March 20 and April 21), full fertilizer (PLANTFEED) (zero and two per thousand), and harvest time (8 am, 12 noon, and 19 pm) on the quantitative and qualitative yield (leaves and stems dry weight, stems to leaves ratio, yield and percentage of essential oil, ...
Read More
To investigate the effects of planting date (March 20 and April 21), full fertilizer (PLANTFEED) (zero and two per thousand), and harvest time (8 am, 12 noon, and 19 pm) on the quantitative and qualitative yield (leaves and stems dry weight, stems to leaves ratio, yield and percentage of essential oil, and carvacrol percentage) of Satureja rechingeri Jamzad, a factorial experiment was conducted in a randomized complete block design with three replications in 2017. Based on the results, all the mentioned traits except the stems to leaves ratio were affected by planting date and full fertilizer treatment. The planting date of April 21 and the application of full fertilizer increased all the studied traits except the carvacrol percentage and the stems to leaves ratio. The morning harvest time treatment increased the percentage and essential oil yield. The highest percentage of carvacrol (93.66%) was obtained in the triple interaction of planting date (March 20) × full fertilizer (two per thousand) × harvest time (evening) and the lowest one (82.77%) was obtained in the triple interaction of planting date (March 20) × no fertilizer application × harvest time (morning). The results showed that in the planting date of April 21 treatment, the application of full fertilizer caused better results in most of the mentioned traits. Also, the morning and evening harvest treatments caused the highest percentage and essential oil yield and carvacrol percentage. To investigate the effects of planting date (March 20 and April 21), full fertilizer (PLANTFEED) (zero and two per thousand), and harvest time (8 am, 12 noon, and 19 pm) on the quantitative and qualitative yield (leaves and stems dry weight, stems to leaves ratio, yield and percentage of essential oil, and carvacrol percentage) of Satureja rechingeri Jamzad, a factorial experiment was conducted in a randomized complete block design with three replications in 2017. Based on the results, all the mentioned traits except the stems to leaves ratio were affected by planting date and full fertilizer treatment. The planting date of April 21 and the application of full fertilizer increased all the studied traits except the carvacrol percentage and the stems to leaves ratio. The morning harvest time treatment increased the percentage and essential oil yield. The highest percentage of carvacrol (93.66%) was obtained in the triple interaction of planting date (March 20) × full fertilizer (two per thousand) × harvest time (evening) and the lowest one (82.77%) was obtained in the triple interaction of planting date (March 20) × no fertilizer application × harvest time (morning). The results showed that in the planting date of April 21 treatment, the application of full fertilizer caused better results in most of the mentioned traits. Also, the morning and evening harvest treatments caused the highest percentage and essential oil yield and carvacrol percentage.
M. Mazloomi Abukhyly; S. khorasaninejad; M. Alizadeh
Abstract
Lavandula stricta Del. is a native aromatic plant in Iran from Lamiaceae, traditionally used for treatment of rheumatic and stomach pain and cough. In usual agricultural systems, the purpose of using fertilizers and their combination is to obtain the highest seed yield and quality of the active substances. ...
Read More
Lavandula stricta Del. is a native aromatic plant in Iran from Lamiaceae, traditionally used for treatment of rheumatic and stomach pain and cough. In usual agricultural systems, the purpose of using fertilizers and their combination is to obtain the highest seed yield and quality of the active substances. This study was aimed to compare the effects of nanofertilizer and fertilizer on growth indices, morphological and biochemical properties of lavender "Upright" (Lavandula stricta Del.) regenerated from seed and tissue culture. The experiment was conducted as factorial design based on randomized complete block design with three replications and four experimental units at the research farm of Gorgan University of Agricultural Sciences and Natural Resources, during the growing season of 2016-2017. The treatments were two plants with different regeneration methods (seeds and tissue culture) and various types of fertilizers (control or no fertilizer, NPK fertilizer at concentrations of 10 and 20 kg per hectare and nanofertilizer at concentrations of 10 and 20 kg ha). The results showed that fertilizer treatments had significant effects on all measured properties except leaf area, shoot height, internodes length, shoot fresh and dry weight, 1000-seed weight and total phenol content (P<0.01). The type of plant also caused differences in biochemical, developmental and morphological properties except shoot height, number of main stem, shoot fresh and dry weight, and 1000-seed weight. Interaction effect of fertilizer and type of plant was significant for all measured properties except shoot height, shoot fresh weight and 1000-seed weight. In general, the results showed that application of NPK nano fertilizer had positive effect on the growth of tissue culture plants and resulted in improved yield.
A. Afkari
Abstract
In order to investigate the effects of drought stress and nitrogen fertilizer on some physiological and biochemical characteristics of basil (Ocimum basilicum L.), a split-plot experiment was conducted based on randomized complete block design in three replications in the research farm of Islamic Azad ...
Read More
In order to investigate the effects of drought stress and nitrogen fertilizer on some physiological and biochemical characteristics of basil (Ocimum basilicum L.), a split-plot experiment was conducted based on randomized complete block design in three replications in the research farm of Islamic Azad University, ArdabilBranch, 2015. The treatments included drought stress (70, 140 and 210 mm of class A evaporation pan) and nitrogen fertilizer at three levels (0, 50 and 100 kg/hectare) respectively. The results showed that the effect of drought stress treatment was significant on the traits investigated. The interaction of drought stress × nitrogen fertilizer had a significant effect on the traits measured, such as chlorophyll a, total chlorophyll, relative water content, dry matter yield, and essential oil yield. In addition, fertilizer treatment caused a significant increase in the physiological characteristics, dry matter yield, and essential oil yield. According to the results, the maximum content of chlorophyll a (2.65 mg/g fresh weight), total chlorophyll (3.42 mg/g fresh weight), relative water content (72.02 percent), dry matter yield (2261.25 kg/hectare), and essential oil yield (7.13 kg/hectare) were obtained for the control treatment and 100 kg of nitrogen per hectare. The maximum content of carbohydrates (3.40 μg/g glucose per fresh weight) and proline (0.681 µmol/g fresh weight) was related to the severe stress treatment. The content of chlorophyll a, b, total, relative water content, carotenoid, and essential oil percent and yield decreased by increasing the drought stress, while the content of carbohydrate and proline increased. Therefore, irrigation at 70 mm evaporation and 100 kg nitrogen fertilizer per hectare could be recommended as the best treatment to achieve the highest levels of chlorophyll a, chlorophyll total, relative water content, dry matter yield, and essential oil yield of basil.
M. Pouryousef; D. Mazaheri; A.R. Yousefi; A. Rahimi; A. Tavakoli
Abstract
In order to study the effect of fertilizing treatments and limited irrigation regimes on grain qualitative traits and mucilage production of Isabgol (Plantago ovata Forsk.), a field experiment was conducted at Experimental Farm of College of Agronomy and Animal Sciences, University of Tehran. The experimental ...
Read More
In order to study the effect of fertilizing treatments and limited irrigation regimes on grain qualitative traits and mucilage production of Isabgol (Plantago ovata Forsk.), a field experiment was conducted at Experimental Farm of College of Agronomy and Animal Sciences, University of Tehran. The experimental design was a split plot based on a randomized complete block design with three replications. In this research, four irrigation regimes including full irrigation, light limited irrigation, moderate limited irrigation and severe limited irrigation, were assigned to the main plots and five fertilizing treatments including control (without fertilizer), chemical fertilizer, combined use of chemical fertilizer and Barvar Phosphate Biofertilizer, cattle manure and combined use of chemical fertilizer and cattle manure, were assigned to the sub plots. Results showed that irrigation regimes had significant effect (p ≤ 0.05) on all measured traits. Mucilage and grain yields decreased with decrement in irrigation frequency from full to severe limited irrigation but mucilage percentage and grain swelling factor increased; therefore, the highest mucilage and grain yield were obtained in full irrigation regime. The highest mucilage percentage and grain swelling factor were obtained in severe limited irrigation. Results also showed that fertilizing treatments had significant effect (p ≤ 0.05) on all measured traits. The highest mucilage yield (252.58 kg/ha) was obtained in combined use of chemical fertilizer and cattle manure treatment under full irrigation regime. Mucilage percentage and grain swelling factor were significantly higher (p ≤ 0.05) in cattle manure treatment.
E. Arazmjo; M. Heidari; A. Ghanbari
Abstract
In order to study the effects of water stress and three sources of fertilizers on flower yield, physiological parameters (chlorophyll a and b, proline and carbohydrate concentration), sodium and potassium in Chamomile (Matricaria chamomoilla L.) a field experiment in split plot design with three replications ...
Read More
In order to study the effects of water stress and three sources of fertilizers on flower yield, physiological parameters (chlorophyll a and b, proline and carbohydrate concentration), sodium and potassium in Chamomile (Matricaria chamomoilla L.) a field experiment in split plot design with three replications was conducted in 2008 at Zabol University. Treatments included W1 (90% FC or Control), W2 (75% FC) and W3 (50% FC) as main plot and three sources of fertilizers: F1 (Control or non fertilizer application), F2 (chemical fertilizer), F3 (manure fertilizer) and F4 (compost) as sub plots. Results showed water stress at W3 treatment, reduced dry flower yield about 18.1%. In this study, however the highest flower yield was obtained from W1 and use of chemical fertilizer treatments but at W3 treatment, among the fertilizer, manure fertilizer had the best effect on flower yield in Chamomile. Water stress increased the activity of substance but the highest active substance was obtained in W2 and use of chemical fertilizer. In this experiment, chlorophyll a and b and K contents in leaves by impact of water stress decreased but free proline, total soluble carbohydrate concentration and sodium were increased under water stress. Use of manure fertilizer had the highest positive effects on physiological parameters and potassium uptake under water stress in chamomile.
B. Dadman; R. Omidbaigi; F. Sefidkon
Abstract
This field experiment was conducted from April to October 2005 in order to study the effects of different nitrogen levels (0, 50, 100, 150 and 200 kg ha-1) on essential oil content and compositions of Mexican marigold (Tagetes minuta L.). The utilization of nitrogen significantly affected essential oil ...
Read More
This field experiment was conducted from April to October 2005 in order to study the effects of different nitrogen levels (0, 50, 100, 150 and 200 kg ha-1) on essential oil content and compositions of Mexican marigold (Tagetes minuta L.). The utilization of nitrogen significantly affected essential oil content and compositions of Mexican marigold compared to control samples without nitrogen fertilizer. The application of 200 kg ha-1 nitrogen gave the highest oil content (1.16%). The results of the oil analysis showed that the constituents of the oils varied between nitrogen levels. There fore it could be concluded that for maximum production of essential oil, Mexican marigold should be grown with 200 kg ha-1 nitrogen but in order to preserve environment by decrease consuming fertilizer and soil management it is better to suggest 150 kg ha-1 nitrogen to produce safer crops because of the little differences of 150 with 200 kg ha-1 nitrogen on oil content.
E. Sharifi Ashoorabadi; M.H. Lebaschi; A. Matin; B. Abbaszadeh; K. Alizadeh Anaraki
Abstract
To investigation of Eenergy efficiency in agroecosystem, a field experiment was carried out on Mellisa officinlais in Alborz research complex in 2004 year. The treatments was 80 kgha-1 nitrogen application in soil and spry application (%2 nitrogen) that was compared to the control treatment (no fertilizers) ...
Read More
To investigation of Eenergy efficiency in agroecosystem, a field experiment was carried out on Mellisa officinlais in Alborz research complex in 2004 year. The treatments was 80 kgha-1 nitrogen application in soil and spry application (%2 nitrogen) that was compared to the control treatment (no fertilizers) in complete randomize block design with three replication. In both treatments, the first application was conducted when plant high was 10 cm and second application was after 30 days. The harvest carried out before flowering. The energy efficiency was calculated by a software that had been designed.The results showed that, the spry method was significant (a=%5) to others. In comparison of other treatments, the spry application of nitrogen, increased energy efficiency to 2.14. In the spry method, nitrogen fertilizer reduced. Based on the results, low input Agriculture systems could be introduced for sustainable agriculture.
M. Niakan; R.A. Khavarynejad; M.B. Rezaee
Volume 20, Issue 2 , July 2004, , Pages 131-148
Abstract
The effects of three levels of nitrogen fertilizer(urea)(o,100,200 Kg ha¹) with two levels phosphorus(super phosphate)(0,100 Kg ha¹) and two levels of potasium(0,100 Kg ha¹) fertilizer in different rate of N/P/K on fresh weight, dry weight,number,aera and oil contetnt ...
Read More
The effects of three levels of nitrogen fertilizer(urea)(o,100,200 Kg ha¹) with two levels phosphorus(super phosphate)(0,100 Kg ha¹) and two levels of potasium(0,100 Kg ha¹) fertilizer in different rate of N/P/K on fresh weight, dry weight,number,aera and oil contetnt of leaf in Mentha piperita L.in field. According to the results rate of 200/200/200 Kg ha¹ of N/P/K increased fresh weight ,dry weight and number of leaf while rate of 200/100/200 Kg ha¹ of N/P/K increased leaf aera and oil content.Resuls also a positive correlation was shown between leaf aera and oil content.
M. Niakan; R. Khavarynejad; M.B. Rezaee
Volume 19, Issue 1 , May 2003, , Pages 1-14
Abstract
The effects of two levels of nitrogen fertilizer (urea) (0,100 kg ha-1) with one of levels in phosphorus (super phosphate) and potassium (potass oxide ) fertilizer (each of 100 kg ha-1) in two rate of 0/100/100 kg ha-1 (N0 p100 k100، control) and 100/100/100 kg ha-1 (N100 P100K100) on quantity and quailty ...
Read More
The effects of two levels of nitrogen fertilizer (urea) (0,100 kg ha-1) with one of levels in phosphorus (super phosphate) and potassium (potass oxide ) fertilizer (each of 100 kg ha-1) in two rate of 0/100/100 kg ha-1 (N0 p100 k100، control) and 100/100/100 kg ha-1 (N100 P100K100) on quantity and quailty of leaf (in before flowering) and flowering branches (in flowering) oil in Mentha piperita L. under the fram condition in form spilit plot design in four repeat have been evaluated. According to the results obtained, with out regard to kind of treatment, main composition in oil included: B-ocimene, linalool, 1,8- cineole, B caryophyllene, myrcene. In rate N0 P100 K100 (control), amount of linalool and 1,8 cineole in flowering branches were more of leaf oil. In before flower enhancement of nitrogen fertilizer increased amount of linalool and 1,8 cineol and reduced amount of B-caryophyllene and B-ocimene in leaf oil. In flowering branches, applied of nitrogen fertilizer increased amount of B-ocimene and B-caryophyllene and reduced linalool and 1,8 cineole. Amount of oil in flowering branches in control was more of leaf. Increased of nitrogen fertilizer, had positive effect on content leaf and flowering branches oil.
M. Najafpour Navaei
Volume 13, Issue 1 , July 2002, , Pages 41-50
Abstract
The effects of chemical fertilizers on seed yeild of Echium amoenum, Were studied. The seed were planted in green house during autumn 1994.Plantlets transfered in the field in early spring. Fertilizer treatment (Urea and Super Phosphate Triple) used in a complately randomized block design with 16 treatment ...
Read More
The effects of chemical fertilizers on seed yeild of Echium amoenum, Were studied. The seed were planted in green house during autumn 1994.Plantlets transfered in the field in early spring. Fertilizer treatment (Urea and Super Phosphate Triple) used in a complately randomized block design with 16 treatment in 4 replication.
Fertilizer increased seed ylied and nitrogen had an important role on seed yeild.
