List of Articles Seed Quality

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Effects of altitiudinal variation on physical and physiological characteristics of Alder seeds (Alnus Subcordata C.A.M) (Case study Vaz forest management plan-District 1)
  ghahreman Rezai فرشاد Yezdian فرزاد farzad.shafizadeh@yahoo.com M.A Hedayati
  In order to survey on trends of physical and physiological changes, Alder seeds were collected from different altitudes (200-2000 masl) with a 500 m intervals from Vaz watershed forests around Nour city, Mazandaran province. After cleaning, seed traits such as moisture More

  In order to survey on trends of physical and physiological changes, Alder seeds were collected from different altitudes (200-2000 masl) with a 500 m intervals from Vaz watershed forests around Nour city, Mazandaran province. After cleaning, seed traits such as moisture content (MC%), 1000 seed weight (TSW), seed and fruit dimentions, germination and empty seed percent were determined at seed lab of Caspian forest tree seed centre. Data were analysed by One Way ANOVA based on Duncan test with SPSS. According to results of this survey, all traits were sensible at 99% except of germination (95%). As, the highest MC% were recorded at 1500 m.a.s.l (14%) and the lowest at 200, 2000 m.a.s.l   (6.6, 7.2 res). 1000 SW were increased till 1500 masl, then reduced at 2000 m.a.s.l. The highest (0.18 gr) and the lowest (0.1 gr) TSW were recorded at 1500 and 200 m.a.s.l res. The longest (2 cm) and the widest (1.38 cm) fruit were grown at 1500 and the shortest (1.3 cm) and the narrowest (.74 cm) at 200 m.a.s.l. Germination didn't show any special corelation with altitude. The highest (62%) were registered at 1500 m.a.s.l and the lowest (23%) at 200 m.a.s.l. According to the resuts of germination the highest empty seeds (62%) were found at 200 m.a.s.l and the lowest (23%) At 1500 m.a.s.l. Results of this investigation showed that the quality of Alder seeds increased to 1500 m.a.s.l. and then decreased slightly. It seems that similar investigation on the seeds of this species in Caspian region conducted to preparing of seed quality map which is an indicator of forest quality.   Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - مدیریت بذر سیب زمینی در میان کشاورزان سیب زمینی کار شهرستان فریدون شهر (استان اصفهان)، ایران
  اصغر باقری مجتبی سوختانلو
  این پژوهش به بررسی سازوکارهای مدیریت بذر سیب زمینی توسط سیب­زمینی­کاران شهرستان فریدون­شهر در استان اصفهان پرداخته است. این پژوهش به روش پیمایشی انجام شد. جامعه آماری تحقیق، شامل سیب­زمینی­کاران شهرستان فریدونشهر بودند. نمونه­ای متشکل از 250 نفر More

  این پژوهش به بررسی سازوکارهای مدیریت بذر سیب زمینی توسط سیب­زمینی­کاران شهرستان فریدون­شهر در استان اصفهان پرداخته است. این پژوهش به روش پیمایشی انجام شد. جامعه آماری تحقیق، شامل سیب­زمینی­کاران شهرستان فریدونشهر بودند. نمونه­ای متشکل از 250 نفر از سیب‏زمینی‏کاران (جامعه کل: 725 نفر) برای گردآوری اطلاعات تعیین شدند. روش نمونه گیری مورد استفاده در تحقیق، طبقه ای تصادفی با انتساب متناسب بود. ابزار تحقیق پرسشنامه­ای بود که روایی صوری آن توسط گروهی از اعضای هیأت علمی و کارشناسان جهادکشاورزی شهرستان فریدون­شهر تأیید شد. برای تعیین پایایی تحقیق از آلفای کرونباخ استفاده شد که برای متغیرهای تحقیق بالاتر از 7/0 بدست آمد. نتایج نشان داد که "بخشی از غده­های تولید شده  توسط کشاورزان" اولویت اول کشاورزان به عنوان منبع غده بذری سیب‏زمینی بود. 6/89 درصد از سیب زمینی کاران غدههای بذری را در شرایط نامناسبی نگهداری می­کنند. دانش و مهارت اکثر کشاورزان درزمینه مدیریت بذر سیب زمینی پایین بود و رابطه مثبت و معنی­داری با سطح تحصیلات و عملکرد سیب­زمینی داشت ولی رابطه آن با سن منفی بود. براساس تحلیل رگرسیون لجستیک، قدرت پیش­بینی مدل 639/0 بود و حساسیت کل مدل برای پیش­بینی 0/86 درصد بدست آمد. هم­چنین از میان عامل­های فردی، حرفه­ای و اقتصادی،  متغیرهای سن، تعداد نیروی کار خانواده، وسعت مالکیت زمین­ها، وسعت زیرکشت سیب­زمینی، عملکرد تولید سیب­زمینی در واحد هکتار، تعداد قطعات مالکیت زمین­ها و سطح دانش و اطلاعات در میان پاسخ‏گویان بطور معنی­داری بر پذیرش و بکارگیری سیستم­های نوین تولید بذر سیب­زمینی دلالت دارند. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Effect of iron and zinc spraying and harvesting times on germination and some biochemical characteristics of soybean cultivar Williams 82
  Armin Poursafar Mohammad Sedghi Raouf Seyed Sharifi Mohammad Hasanzadeh
  In order to study the changes of seed germination of soybean (Glycine max) and some biochemical characteristics, a factorial experiment as randomized complete block design was conducted at the Agricultural and Natural Resources Research Center of Ardabil Province (Magha More

  In order to study the changes of seed germination of soybean (Glycine max) and some biochemical characteristics, a factorial experiment as randomized complete block design was conducted at the Agricultural and Natural Resources Research Center of Ardabil Province (Maghan) in 2020-2021. Treatments included 2 spraying factors as iron and zinc sulfates besides three harvesting times: green pod, physiological maturity and dry mature pod. According to the results, interactions of spraying and harvesting time were significant on grain yield and protein percentage, and the highest amounts of both traits were obtained by applying zinc sulfate at dry mature pod. Seed oil content was affected by both treatments so that, the highest amount was obtained at the green pod at rate of 21.4% and zinc sulfate had the greatest effect on grain oil percentage at rate of 20.3%. Furthermore, interaction of spraying and harvesting time was significant on seed Fe and Zn contents and results showed that the highest amount of seed Fe (121.6 mg/kg) was achieved by iron sulfate and that of seed Zn (91.1 mg/kg) by zinc sulfate, both at the physiological maturity. Seed germination was also affected by interaction of spraying and harvesting time and the highest rate (96.6%) was observed at dry mature pod by applying zinc sulfate. In general, Zn consumption increased germination percentage, grain rate, seed oil percentage and grain yield, and iron consumption improved grain protein. The physiological maturity and dry mature pod harvestings improved the values of measured traits except the seed oil. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - Effect of Fe, Zinc and Mn foliar application on qualitity forage in sorghum
  iman farahani
  In 1390 the project was done in the research field PNU Farmahini.In a randomized complete block design with four replicates each consisting of 8 plots was carried out.Treatments include foliar application of zinc, iron, manganese, iron, manganese, iron, zinc and mangane More

  In 1390 the project was done in the research field PNU Farmahini.In a randomized complete block design with four replicates each consisting of 8 plots was carried out.Treatments include foliar application of zinc, iron, manganese, iron, manganese, iron, zinc and manganese, iron, zinc, manganese and control treatment. Concentration of 5 per thousand Vkvdhay fertilizer for the use of the sulfate form. Spraying was done in two stages stem and tassel emergence. The results showed that the effect of treatments on nitrogen, phosphorus, potassium, iron, zinc, manganese, seed yield, forage yield and dry matter yield were significant.Effect of treatments on yield was significant at the 1% level. The highest grain yield of 5.75 tons per ha foliar spray of iron, zinc and manganese and the lowest yield of 4.72 tons per hectare in control was obtained.The highest fresh and dry matter yield, 22/55 and 95/13 tons per ha foliar spray of iron, zinc and manganese and the lowest is 17/49 and 67/9 tons per ha and the control group. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  5 - Effcts of organic and chemical fertilizer combinations on yield, yield components, oil and protein percentages of two canola cultivars
  Elanz Ebrahimian Ahmad Bybordi
  Effects of chemical and organic fertilizers combinations on yield, yield components, seed oil and protein percentage of two canola cultivars were studied. The experiment was carried out as factorial based on a randomized complete block design with three replications in More

  Effects of chemical and organic fertilizers combinations on yield, yield components, seed oil and protein percentage of two canola cultivars were studied. The experiment was carried out as factorial based on a randomized complete block design with three replications in Agricultural and Natural Resources Research Center of Azerbaijan-e-Sharqi province of Iran in 2010. The first factor comprised seven levels of organic and chemical fertilizers and their combinations including: non cattle manure and non urea (control), 100% cattle manure (organic), 80% cattle manure and 20% urea (combined), 60% cattle manure and 40% urea (combined), 40% cattle manure and 60% urea (combined), 20% cattle manure and 80% urea (combined) and 100% urea (chemical) and the second factor was two canola cultivars (Okapi and Modena). The results showed that the highest yield, yield components, oil and protein percentages were obtained from a combination treatment, application of 20% cattle manure along with 80% urea (96 kg/ha), that was differed significantly from other chemical treatments for seed yield and number of seeds per pod. Therefore, application of this treatment could be recommended because it leading to a higher yield with lower chemical fertilizer application. Besides, variety okapi was superior to Modena based on the measured characteristics. Manuscript profile