| تعداد نشریات | 282 |
| تعداد نشریات سازمان | 80 |
| تعداد شماره‌ها | 3,262 |
| تعداد مقالات | 36,058 |
| تعداد مشاهده مقاله | 55,187,665 |
| تعداد دریافت فایل اصل مقاله | 94,186,177 |
ارزیابی اثرات تاریخ کاشت و کود نیتروژن بر عملکرد و اجزای عملکرد کاملینا (Camelina sativa L.) تحت شرایط اقلیمی کرمانشاه | ||
| پژوهش های کاربردی زراعی | ||
| دوره 37، شماره 1 - شماره پیاپی 142، شهریور 1404، صفحه 24-1 اصل مقاله (767.96 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/aj.2025.362244.1646 | ||
| نویسندگان | ||
| محسن پاشایی1؛ فرزاد مندنی* 2؛ دانیال کهریزی3 | ||
| 1گروه تولید و ژنتیک گیاهی، دانشگاه رازی، کرمانشاه، ایران. | ||
| 2گروه مهندسی تولید و ژنتیک گیاهی، دانشگاه رازی، کرمانشاه | ||
| 3گروه بیوتکنولوژی، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران. | ||
| چکیده | ||
| به منظور بررسی تأثیر تاریخ کاشت و کود نیتروژنه بر عملکرد، اجزای عملکرد و تولید روغن گیاه کاملینا در شرایط دیم، آزمایشی به‌صورت کرت‌های خردشده در قالب بلوک‌های کامل تصادفی در سه تکرار در مزرعه تحقیقاتی پردیس کشاورزی و منابع طبیعی دانشگاه رازی کرمانشاه در سال زراعی 99-1398 انجام شد. فاکتور اصلی تاریخ کاشت (سوم آبان، 18 آبان و 30 آبان ماه) و فاکتور فرعی کود نیتروژن (0، 50،100، 150 کیلوگرم کود اوره در هکتار) بود. صفات مورد ارزیابی شامل ثبت مراحل نموی گیاه (روزت، ساقه رفتن، گلدهی، غلاف بندی و رسیدگی فیزیولوژیک) ، عملکرد، اجزای عملکرد و میزان تولید روغن بود. نتایج نشان داد که کمترین طول دوره مراحل نموی در تاریخ کاشت اواسط آبان ماه مشاهده‌شده و در سایر تاریخ کاشت‌ها طول دوره نموی افزایش یافت. بیشترین میزان عملکرد دانه (459 کیلوگرم در هکتار) در تاریخ کاشت اواسط آبان ماه مشاهده شد. درحالی‌که بالاترین تعداد غلاف در بوته (8/52 درصد افزایش) متعلق به تاریخ کاشت اوایل آبان ماه بود. به‌جز مراحل نموی سایر صفات موردبررسی تحت تأثیرمیزان مصرف کود نیتروژن قرار گرفت. بیشترین میزان عملکرد دانه، عملکرد وزن خشک کل و عملکرد روغن در تیمار حداکثر میزان مصرف کود نیتروژن بود که نسبت به شرایط عدم مصرف کود نیتروژن به ترتیب 4/37، 4/31 و 5/16 درصد بالاتر بود. به‌طورکلی نتایج این مطالعه نشان داد که بیشترین عملکردکاملینا به لحاظ صفات اندازه‌گیری شده در تاریخ کاشت‌های سوم آبان و 18 آبان و صرف‌نظر از مسائل زیست‌محیطی در شرایط کاربرد 150 کیلوگرم کود نیتروژن در هکتار مشاهده شد. | ||
| کلیدواژه‌ها | ||
| شاخص برداشت؛ عملکرد روغن؛ عملکرد وزن خشک کل؛ وزن هزار دانه | ||
| عنوان مقاله [English] | ||
| Evaluation of the effects of sowing date and nitrogen fertilizer on yield and yield components of Camelina (Camelina sativa L.) in Kermanshah climatic conditions | ||
| نویسندگان [English] | ||
| Mohsen Pashaei1؛ Farazd Mondani2؛ Danial Kahrizi3 | ||
| 1Department of Plant Production and Genetics, Razi University, Kermanshah, Iran. | ||
| 2Department of Plant Production and Genetics, Razi University, Kermanshsh. Iran | ||
| 3Department of Biotechnology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran. | ||
| چکیده [English] | ||
| Extended Abstract Introduction The production of adequate food is an essential national and security objective for every country. Achieving this goal requires adopting appropriate measures such as increasing the efficiency of agricultural production systems through suitable policies, utilizing new varieties adapted to current conditions, and utilizing unconventional water resources. Camelina, a new oilseed crop, has unique agricultural properties such as low nutrient requirements, resistant to weeds, high resistance to drought stress, pests, and plant diseases. The provision of environmental factors within the range of the plant's tolerance and resilience plays a crucial role in achieving desirable and suitable yield of any plant. Nitrogen is among the vital nutrients that significantly affect crop yield that its deficiency can lead to severe reduction in yield and excess of it also poses significant environmental risks. Sowing date is another environmental factor that affects agricultural production. By sowing each crop at the desired time, better utilization of other effective environmental factors on the seedyield can be achieved. Hence, this study aimed to evaluate the effects of sowing date and nitrogen fertilizer application on the yield, yield components, and oil production of Camelina as a new agricultural crop, considering the importance of self-sufficiency in oil production for the country and efficient use of agricultural lands indryland condition. Materials & Methods This experiment was conducted as split plot layoaut based on a complete randomized block design with three replications at the research farm of Razi University of Kermanshah during the agricultural in 2018-2019. The main factor was sowing date (October 25, November 9 and November 21), and the sub-factor was nitrogen fertilizer (including0, 50, 100, 150 kg ha-1). The evaluated traits included recording plant growth stages, seedyield, yield components, and oil production. The sowing dates were determined based on effective rainfall and the source of nitrogen supply was also 46% urea fertilizer. The fertilization process was carried out three times, including at the end of the four-leaf stage, at the end of the stem elongation stage, and at the beginning of the grain filling stage. The studied traits included yield and its components, total dry weight yield, harvest index, and grain oil yield. The data were analyzed using ANOVA and the means were compared with the Duncan test. Results & Discussion The study findings indicated that the shortest growth period was observed for the sowing date of November 9, whereas the growth period increased in other sowing dates. Notably, the highest seed yield (459 kgha-1) was obtained from sowing ofNovember 9, while the highest number of pods per plant (52.8% increase) was belonged to the sowing date of October 25. Except for growth stages, other traits were also significantly affected by the amount of nitrogen fertilizer. Our findings demonstrated that the treatment with maximum nitrogen fertilizer application led to the highest seed yield, total dry weight yield, and oil yield of camelina, which were 37.4%, 31.4%, and 16.5% greater than the control (without fertilizer), respectively. It appears that desirable sowing dates lead to an improvement in yield-related traits and its components due to the plant's greater utilization of environmental conditions and minimizing exposure to high temperatures during the final stages of growth. High temperatures at the end of the growing season can cause physiological limitations, especially during the flowering period, and subsequently lead to limitations in the supply of photosynthetic assimilates and weak plant growth (Moravveji et al., 2017). Various studies have shown that nitrogen fertilizer also improves grain yield components such as the number of seeds per pod, and number of sub and sub sub branches, and 1000-grain weight, ultimately leading to improved grain yield and oil yield (Manore & Yohanns, 2019), which is consistent with the results of this study. Conclusion It can be concluded that in dry conditions where the sowing date depends on seasonal rainfall, a specific sowing date cannot be determined with certainty. | ||
| کلیدواژه‌ها [English] | ||
| 1000-grain weight, Harvest index, Oil yield, Total dry weight yield | ||
| مراجع | ||
|
| ||
|
آمار تعداد مشاهده مقاله: 517 تعداد دریافت فایل اصل مقاله: 355 |
||