نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد آگروتکنولوژی، گروه زراعت و اصلاح نباتات ، دانشکده کشاورزی، دانشگاه یاسوج
2 عضو هیات علمی گروه زراعت و اصلاح نباتات دانشگاه یاسوج
3 دانشیار گروه زراعت و اصلاح نباتات دانشکده کشاورزی دانشگاه یاسوج
4 گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه یاسوج
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Abstract
Introduction and Objective: The aim of this study was to investigate the improvement of nutrient uptake and nitrogen efficiency indices in Camelina influenced by integrated nitrogen fertilizer management at different planting dates.
Materials and Methods: The experiment was conducted as a split-plot randomized complete block design with 3 replications in the Eqlid region. The main factor included nitrogen fertilizers at 4 levels (100% chemical )urea(, 75% chemical + biofertilizer) Azotobacter and Azospirillum), 50% chemical + biofertilizer and no nitrogen). The secondary factor included planting date at 4 levels (September 11, September 26, April 9, and April 24).
Findings: The interaction between planting date and nitrogen fertilizer was significant for all traits studied, except for phosphorus content and grain oil percentage. The highest potassium, iron, and zinc contents were obtained from the planting date of September 26 and the combined application of chemical and bio-nitrogen fertilizers, which also led to an increase in leaf and seed nitrogen content with delayed planting. The highest seed yield, oil yield, and protein yield were achieved at the planting date of September 26 with the application of 75% chemical + biofertilizer. The efficiency of nitrogen use and nitrogen uptake efficiency decreased significantly with increasing nitrogen levels.
Conclusion: The planting date of 26 September and the application of a combined 75% chemical nitrogen + biofertilizer is recommended for achieving optimal oil yield of camelina in the tested region.
کلیدواژهها [English]
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