University of Tabriz Journal of Agricultural Science and Sustainable Production 2476-4310 36 1 2026 04 20 Evaluation of yield and Ecological indexes of camelina- chickpea intercropping in dryland and irrigation conditions and different nitrogen levels Evaluation of yield and Ecological indexes of camelina- chickpea intercropping in dryland and irrigation conditions and different nitrogen levels 15 37 21408 10.22034/saps.2024.61757.3225 FA Shahzad Jamaati Somarin PhD Student of Agrotechnology (Agroecology), Department of Plant Production and Genetics, Faculty of Agricultural Sciences, Gilan University, Gilan, Iran. Elmira Mohammadvand Faculty of Agricultural Science, University of Guilan, Rasht, Iran GholamReza MohsenAbadi Department of Plant Production and Genetics, Faculty of Agricultural Sciences, University of Gilan, Gilan, Iran. Majid Majidian Department of Agronomy and Plant Breeding, Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran Journal Article 2024 05 22 Background and objectives: Considering the problems related to water scarcity and reduced precipitation in the region, and the importance of expanding oilseed cultivation as well as research programs on crops with low water and fertilizer requirements in Ardabil Province (Namin), a study was conducted to evaluate the yield and ecological indices of camelina–chickpea intercropping under different nitrogen fertilizer levels in irrigated and rainfed conditions in this region. Materials and methods: The experiment was conducted as a split-factorial arrangement based on a randomized complete block design with three replications during the 2022–2023 cropping year. Experimental treatments included irrigation at two levels-irrigated (three irrigations) and rainfed (no irrigation)-assigned to the main plots. The factorial treatments in the subplots consisted of nitrogen fertilizer at two levels: control (11.5 kg ha⁻¹ pure nitrogen applied as a starter and uniformly for all treatments) and 46 kg ha⁻¹ pure nitrogen, along with seven cropping patterns. These included sole cropping of camelina and chickpea and their intercropping based on replacement series patterns: 1:1, 2:2, and 3:3 (equal ratio, 50% of each crop), 2:1 (66% and 33%, respectively), 1:2 (33% and 66%, respectively), and a mixed cropping of camelina and chickpea (equal ratio, 50% of each crop). Results: Under irrigated conditions, intercropping showed superiority over other treatment levels in most of the studied traits, including grain yield. The land equivalent ratio (LER) for camelina–chickpea intercropping was greater than one and positive. The best treatment combination was observed in the 2:2 intercropping pattern of camelina and chickpea under irrigated conditions with the control fertilizer level. The competition ratio of camelina was highest under rainfed conditions with the control fertilizer level in the intercropping ratios of 2:1 (66:33), followed by 1:1, 3:3, 2:2, and 1:2, respectively. Overall, the mean competition ratio of camelina exceeded that of all other studied treatments, indicating the highest competitive ability in these treatments. Conclusion: Considering the climatic conditions of Ardabil Province, the irrigated treatment combined with the application of 46 kg ha⁻¹ pure nitrogen and intercropping arrangements of 3:3 and 2:2 camelina with chickpea (50:50) can be recommended. Background and objectives: Considering the problems related to water scarcity and reduced precipitation in the region, and the importance of expanding oilseed cultivation as well as research programs on crops with low water and fertilizer requirements in Ardabil Province (Namin), a study was conducted to evaluate the yield and ecological indices of camelina–chickpea intercropping under different nitrogen fertilizer levels in irrigated and rainfed conditions in this region. Materials and methods: The experiment was conducted as a split-factorial arrangement based on a randomized complete block design with three replications during the 2022–2023 cropping year. Experimental treatments included irrigation at two levels-irrigated (three irrigations) and rainfed (no irrigation)-assigned to the main plots. The factorial treatments in the subplots consisted of nitrogen fertilizer at two levels: control (11.5 kg ha⁻¹ pure nitrogen applied as a starter and uniformly for all treatments) and 46 kg ha⁻¹ pure nitrogen, along with seven cropping patterns. These included sole cropping of camelina and chickpea and their intercropping based on replacement series patterns: 1:1, 2:2, and 3:3 (equal ratio, 50% of each crop), 2:1 (66% and 33%, respectively), 1:2 (33% and 66%, respectively), and a mixed cropping of camelina and chickpea (equal ratio, 50% of each crop). Results: Under irrigated conditions, intercropping showed superiority over other treatment levels in most of the studied traits, including grain yield. The land equivalent ratio (LER) for camelina–chickpea intercropping was greater than one and positive. The best treatment combination was observed in the 2:2 intercropping pattern of camelina and chickpea under irrigated conditions with the control fertilizer level. The competition ratio of camelina was highest under rainfed conditions with the control fertilizer level in the intercropping ratios of 2:1 (66:33), followed by 1:1, 3:3, 2:2, and 1:2, respectively. Overall, the mean competition ratio of camelina exceeded that of all other studied treatments, indicating the highest competitive ability in these treatments. Conclusion: Considering the climatic conditions of Ardabil Province, the irrigated treatment combined with the application of 46 kg ha⁻¹ pure nitrogen and intercropping arrangements of 3:3 and 2:2 camelina with chickpea (50:50) can be recommended.

https://sustainagriculture.tabrizu.ac.ir/article_21408_e4331388bf4480cd72e86b803ce11d73.pdf