List of Articles Irrigation cycle

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  1 - Estimation of water requirements of Robinia pseudoacania and Ailanthus altissima Mill For afforestation under different water stresses (Case study: Robat Karim town)
  Mohammad Asgari Vahid Etemad Abdolmajid Liaghat Pedram Attarod Mohsen Javanmiri Pour
  Since the creation of green space depends on the availability of water and dedicated water for irrigation of urban green space, green belts and afforestation in arid and semi-arid climates. Water availability has great value and should be used optimally with high effici More

  Since the creation of green space depends on the availability of water and dedicated water for irrigation of urban green space, green belts and afforestation in arid and semi-arid climates. Water availability has great value and should be used optimally with high efficiency. For this reason, in order to save water, planting species that need less water and at the same time have optimal growth efficiency has always been as an executive policy. The aim of current study is to estimate the water requirement of tree species in the field and greenhouse under different water stresses in Robat Karim town of Tehran province. This research has been done in both space of greenhouse and field by saplings of Robinia pseudoacania and Ailanthus altissima Mill and it was done in a completely random design in the field and greenhouse. This research has two stages and each stage consists of several phases. In the first stage, respectively soil field capacity, determining of MAD, determining water requirement of saplings through evapotranspiration were examined and in fact, by determining the water requirement of saplings, the irrigation cycle was determined. In the second stage, the studied saplings were subjected to water stresses 2, 4 and 6 days after reaching MAD and at each period, the physical characteristics data of the saplings were collected. Generally, the results of this study have shown that Robinia pseudoacania has a higher water requirement and more irrigation cycles in the field and greenhouse than Ailanthus altissima Mill. Manuscript profile
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  2 - تاثیر استفاده از سوپر جاذب، بر عملکرد و اجزا عملکرد ذرت دانه ای سینگل کراس 704 در شرایط آب و هوایی لرستان
  یدالله یوسفی فرد علی عصاره منوچهر کلهر
  کمبودآبیکیازمهمترینمشکلاتیاستکهدرمناطقخشکو نیمه خشکبهوفورتجربهمی شود.کمبودآب بهعنوانفاکتوریمحدودکننده،رشدوتوسعه یپوششگیاهیدراینمناطق رابامحدودیتروبرومی سازد. با توجه به اینکه ایران کشوری کم آب و خشک است، استفاده از راهکارهایی جهت کاهش مصرف آب و استفاده بهینه از مقدار آب More

  کمبودآبیکیازمهمترینمشکلاتیاستکهدرمناطقخشکو نیمه خشکبهوفورتجربهمی شود.کمبودآب بهعنوانفاکتوریمحدودکننده،رشدوتوسعه یپوششگیاهیدراینمناطق رابامحدودیتروبرومی سازد. با توجه به اینکه ایران کشوری کم آب و خشک است، استفاده از راهکارهایی جهت کاهش مصرف آب و استفاده بهینه از مقدار آب موجود، راه حل بسیاری از مشکلات خواهد بود. یکی از این  راه کارها، استفاده از مواد سوپر جاذب جهت افزایش جذب و نگهداری آب است. در این تحقیق، تاثیر سوپر جاذب استاکوزورب بر حجم آب قابل مصرف برای یک دوره رشد، کارآیی مصرف آب و عملکرد دانه و اجزای عملکرد ذرت دانه سینگل کراس 704 مورد بررسی قرار گرفت. تیمارهای آزمایشی، شامل آبیاری کامل بر اساس عرف منطقه (1T )، تیمار کم آبیاری با مصرف75درصد نیاز آبی گیاه (2  T) ، تیمار کم آبیاری به همراه مصرف سوپر جاذب (3(T و تیمار کم آبیاری به همراه مصرف سوپر جاذب و محلول پاشی سولو پتاس( 4 T) بود.در اعمال سطوح آبیاری، آبیاری برای تیمار شاهد، هنگامی صورت گرفت که 50 درصد ظرفیت زراعی تخلیه شده باشد. برای اعمال تیمار‌های کم آبیاری، تخلیه 75 درصد رطوبت FC مبنای کم آبیاری قرار گرفت. نتایج این مطاله نشان داد که استفاده از سوپر جاذب استاکوزورب بر عملکرد دانه، ارتفاع بوته، قطر ساقه، تعداد ردیف دانه در بلال، عملکرد بیولوژیک و وزن هزار دانه در سطح 5 درصد معنی دار می باشد. همچنین بیشترین کارایی مصرف آب، مربوط به تیمار 4 T و کمترین کارآیی مصرف آب، مربوط به تیمار 1 T می باشد.  این نتایج  نشان دهنده آن است که در صورت استفاده از پلیمر‌های سوپر جاذب، علاوه بر افزایش عملکرد محصول، کارآیی مصرف آب نیز افزایش پیدا می کند. Manuscript profile
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  3 - Evaluation of Growth Indices and Quantitative and Qualitative Characteristics of Forage Amaranth in Comparison with Forage Millet
  Naser Zareh Bahram Amiri Hamid Reza Miri Omid Alizadeh Reza Hamidi
  10.30495/JCEP.2023.1918753.1750
  Drought is one of the major factors limiting productivity in agriculture and nutrition management, including the use of potash fertilizers, plays an important role in plant resistance to drought. In order to evaluate the quantitative and qualitative characteristics of f More

  Drought is one of the major factors limiting productivity in agriculture and nutrition management, including the use of potash fertilizers, plays an important role in plant resistance to drought. In order to evaluate the quantitative and qualitative characteristics of forage amaranth in comparison with forage millet, a split factorial experiment was designed and conducted in a randomized complete block design with three replications in 2016 and 2017 in Saadatshahr region of Fars province. In this experiment, three irrigation intervals (5, 10 and 15 days) were used as the main factor, potassium fertilizer (50, 100 and 150 kg.ha-1) and forage plants (amaranth and millet) as sub-plots. The results of mean comparison of two-year combined analysis showed that amaranth had significantly more height, stem diameter, inflorescence length, number of leaves per plant, dry forage yield, ash percentage, crude protein and carbohydrate content than millet. Increasing the irrigation interval reduced the height, stem diameter, inflorescence length, number of leaves per plant, 1000-seed weight, percentage of crude fiber, dry matter yield, ash percentage, and soluble carbohydrates. By increasing potassium fertilizer level, plant height, stem diameter, inflorescence length, number of leaves per plant, percentage of crude fiber, dry forage yield, ash percentage, crude protein percentage, ADF percentage and NDF percentage in the plant decreased. In general, it can be concluded that amaranth plant has higher yield and drought tolerance than millet and the application of 150 kg.ha-1 of potassium fertilizer can be recommended to achieve higher yield. Manuscript profile
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  4 - Evaluation the Effects of Superabsorbent on Qualitative Characteristics of Lawn
  F. Sheikhmoradi I. Argi V. Abdosi A. Esmaeili
  Water sources optimizing required a suitable irrigation program. Different material can use to increase water use efficiency. Superabsorbent is one of the materials where used in around the world. These materials put in the soil and absorb water so that reserved water i More

  Water sources optimizing required a suitable irrigation program. Different material can use to increase water use efficiency. Superabsorbent is one of the materials where used in around the world. These materials put in the soil and absorb water so that reserved water is usable by plant in the time of drought stress and they can reduce stress and lead to prevent yield loss. Therefore, the experiment was conducted to evaluate effects of different superabsorbent and irrigation cycles on lawn. A split plot experiment based on randomized block design with three replications was used. Irrigation cycles and superabsorbent amounts used as main-plot and sub-plots respectively. Four irrigation periods (1, 2, 4 and 6 days) and four superabsorbent amounts (0, 20, 25 and 30 g/m2) were used as experimental treatments. One-day irrigation interval and zero superabsorbent amounts were used as control. Lawn water requirement was calculate by evaporation from a pan class. Results showed that superabsorbent amount had significant effect on shoot height, total chlorophyll and plant density. Results showed that lawn performance was higher in 30 g/m2 of superabsorbent amount at two-day irrigation cycle. Manuscript profile
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  5 - The Effect of Paclobutrazol on Physiological Characteristics of Bermuda Grass under Drought Stress
  asghar pakdel حمید رضا میری رامین سامانی بابادائی
  Grass is considered as one of the most important covering plants in designing green spaces. We aimed to assess the growth retarding effects of Paclobutrazol on several physiological characteristics of Bermuda grass under dry stress in the form of a randomized factorial More

  Grass is considered as one of the most important covering plants in designing green spaces. We aimed to assess the growth retarding effects of Paclobutrazol on several physiological characteristics of Bermuda grass under dry stress in the form of a randomized factorial design study with three repetitions. The treatments in this study were paclobutrazol at concentrations of 0, 25, 50, and 75 mg/l and drought stress at four levels (irrigation based on 100, 80, 60, and 40% of the field’s capacity). We found that grass under severe drought stress conditions (40% FC) and were treated with concentrations of 50 and 75 mg/l Paclobutrazol had the highest amount of proline. Grass under moderate drought stress (60% FC) and was treated with Paclobutrazol 50 mg/l had the highest amount of soluble carbohydrates. When using 75 mg/l Paclobutrazol resulted in increased chlorophyll in Bermuda grass. Grass that was irrigated under normal conditions (100% FC) and was treated with different concentrations of paclobutrazol had the highest relative water content. The highest ion leakage was seen in grass under severe drought stress (40% FC) and 0 mg Paclobutrazol. In conclusion, we suggest the use of 50 mg/l Paclobutrazol in order to reduced water consumption or enhancing the growth of grass under drought stress. Manuscript profile
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  6 - The effect of mycorrhizal fungi, water stress and year on flower yield and some characteristics of medicinal plant of Borage (Borago officinalis L.) in Yasouj region
  Ali Rahimi
  Identifying the critical time and timing of plant irrigation based on a precise and basic plan is the key to water conservation, improvement of irrigation operations and plant tolerance to water shortage in agriculture. In recent years, vesicular arbuscular mycorrhizal More

  Identifying the critical time and timing of plant irrigation based on a precise and basic plan is the key to water conservation, improvement of irrigation operations and plant tolerance to water shortage in agriculture. In recent years, vesicular arbuscular mycorrhizal fungi have been used in many plants to deal with dehydration and drought stress. In this regard, an experiment was conducted as split-plot in the form of randomized complete block design with 3 replications in the Yasuj region at years 2015 and 2016. Water stress was considered as the main factor in the form of irrigation after 30, 60, 90, 120 and 150 mm of evaporation from the evaporation pan class A and mycorrhizal fungus was considered as a secondary factor in the form of no application, application of Glomus mosseae and application of Glomus intraradices. The results showed that the interaction of irrigation and mycorrhizal fungi on flower phosphorus, flower yield, biological yield and water use efficiency of Borage was significant. In irrigation levels after 60, 90, 120 and 150 mm of water evaporation from the evaporation pan, the use of mycorrhizal fungi Glomus mosseae and Glomus intraradices compared to the absence of fungi respectively increased the yield of plant flowers (30.04% and 27.35 %), (90.2% and 90.98%), (93.21% and 94.1%) and (81.73% and 78.86%), also, at these levels of irrigation, biological yield and water use efficiency of Borage flower achieved a significant increase in the presence of mycorrhizal fungus, compared to the absence of mycorrhizal fungus application. Application of both strains of mycorrhizal fungus Glomus mosseae and Glomus intraradices in irrigation levels after 90, 120 and 150 mm of water evaporation from the evaporation pan compared to no application of mycorrhizal fungus, respectively, resulted in a significant increase in the harvest index of Borage flower (44.55% and 43.36%), (13.21% and 15.96%) and (5.6% and 5.41%) and flower phosphorus (44.69% and 20.45%), (150% and 125%) and ( 267.74% and 235.48%). Mycorrhizal fungus was able to moderate the negative effects of drought stress and increase the above-mentioned traits in those irrigation levels, and based on the results of this study, irrigation treatment after 90 mm of water evaporation from the evaporation pan + the use of Glomus mosseae mycorrhizal fungi is recommended. Manuscript profile