نوع مقاله : مقاله کامل علمی- پژوهشی
نویسندگان
1 دانشجوی کارشناسی‌ارشد، گروه اگروتکنولوژی، دانشکده کشاورزی، دانشگاه فردوسی، مشهد، ایران
2 استاد، گروه اگروتکنولوژی، دانشکده کشاورزی، دانشگاه فردوسی، مشهد، ایران.
3 استادیار، مرکز ملی تحقیقات شوری، سازمان تحقیقات آموزش و ترویج کشاورزی- یزد- ایران
4 استادیار، گروه علوم دامی، دانشکده کشاورزی، دانشگاه فردوسی، مشهد، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and Objectives:
Khorasan Razavi province, one of the main livestock production hubs, is currently facing a shortage of bulky forage, and its water and soil resources are increasingly becoming saline. The primary goal of this study was to select superior quinoa lines with higher production capacity and favorable quality traits and to investigate the potential for cultivating forage quinoa lines adapted to the climatic conditions of the region.
Materials and Methods:
This study was conducted during the 2022-2023 growing season at the Salinity Research farm of the Faculty of Agriculture, Ferdowsi University of Mashhad, Iran. The experiment was carried out in a split-plot arrangement within a randomized complete block design (RCBD) with three replications. Six superior quinoa lines, selected from forage quinoa evaluation trials at the National Salinity Research Center of Yazd, including NSRCQF1 (line one), NSRCQF3 (line two), NSRCQF5 (line three), NSRCQF7 (line four), NSRCQF8 (line five), and NSRCQF11 (line six), were assigned to the main plots. Three harvest stages, including the early flowering, end of flowering, and dough grain stages, were assigned to the subplots. Forage was randomly harvested from each subplot over an area of one square meter, and agronomic traits such as fresh weight, dry weight per plant, dry matter percentage, leaf weight, stem weight, leaf-to-stem ratio, shoot crude protein content, acid detergent fiber and neutral detergent fiber, ash and fresh forage yield were measured.
Results:
The results indicated that harvesting at the end of flowering and dough grain stages yielded the highest forage production, which was statistically significant. Harvesting at the beginning of flowering produced the best forage quality in terms of crude protein content (16.89%), showing a statistically significant difference at the 5% probability level compared to other growth stages. Among the six lines evaluated, line NSRCQF3 showed superiority in forage production, while line NSRCQF11 excelled in forage protein content. The highest fresh forage yield (29 tons per hectare) was obtained at the dough grain stage. The highest leaf-to-stem ratio (50%) was achieved at the beginning of flowering, while the lowest ratio (39%) was observed at the dough grain stage.
Conclusion:
The results of this study demonstrated that harvest timing significantly affects the quantitative and qualitative performance of quinoa forage. Harvesting at the dough grain stage resulted in high forage yield, while harvesting at the flowering stage maximized crude protein content (16.89%), highlighting the importance of selecting the appropriate harvest time. Among the six lines evaluated, NSRCQF3 showed superiority in forage production, and NSRCQF11 excelled in forage protein content. Based on these findings, quinoa can be utilized as a salt- and drought-tolerant forage crop in saline and arid regions, although research in this area is still in its early stages and requires further extensive studies.
کلیدواژه‌ها [English]
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