The effect of planting date and application of chemical and biological nitrogen fertilizers on nutrient uptake, nitrogen use efficiency, grain and oil yield of camelina (Camelina sativa) in the Eqlid region

Articles in Press

Document Type : Research Paper

Authors

1 MSc Student, Dept. of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University

2 Prof., Dept. of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University

3 Associate Prof., Dept. of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University

4 Department of Agronomy, Faculty of Agriculture, Yasouj University

10.22034/saps.2025.64493.3310

Abstract

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.

Keywords

Main Subjects

Journal of Agricultural Science and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 23 October 2026

Files

Share

How to cite

Statistics