Saffron Agronomy and Technology

Saffron Agronomy and Technology

Evaluation of the flowering ability of saffron (Crocus sativus L.) corm under field and controlled environmental conditions in Sari plain region

Document Type : Research Paper

Authors
Faezeh Zaefarian 1
Abbas Jalali 2
Hamed Kaveh 3
Fatemh Delavarnia 4
1 Associate Professor, Department of Agronomy, Faculty of Crop Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
2 PhD of Crop Ecology, Faculty of Crop Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
3 Assist. Prof., Department of Plant Production and Researcher at Saffron Institute, University of Torbat Heydarieh, Torbat Heydarieh, Iran.
4 MSc. Dept. of Agronomy, Faculty of Crop Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
10.22048/jsat.2023.405842.1494
Abstract
The present research was conducted in order to achieve the best method of planting and obtaining the maximum yield of flowers and stigmas of saffron (Crocus sativus L.) in two stages in Sari Plain. The first stage was carried out in the research farm of Sari Agricultural Sciences and Natural Resources University during 2021-2022 as split plots on randomized complete blocks design with three replications, in which the experimental treatments included drainage depth (15, 30, and 45 cm) in the main plots and three drainage distances (50, 100 and 150 cm) in the subplots. In the second stage, the produced corms were stored for three months in the incubation environment, and then, the corms were transferred to two different environments of aeroponic and field to evaluate saffron's flower and stigma performance. The measured traits included the number of produced flowers, average flower weight, dry stigma weight in both field and aeroponic, and the amount of safranal, picrocrocin, and crocin and in aeroponic conditions. The evaluation of reproductive traits of saffron under aeroponic showed that with increasing the depth of the drain and decreasing the distance of the drain, traits such as the number of flowers, flower weight, and stigma dry weight increased; when the maximum value of these traits, equivalent to 4744 flowers.m-2, 1423 g.m-2, and 10.7 g.m-2 were observed at 30 cm drainage depth and 100 cm drainage distance, which did not have a significant difference with 45 cm drainage depth treatment and 100 cm drainage distance. In addition, the results showed that the amount of picrocrocin decreased with increasing the depth of the drain and the distance of the drain. In addition, no significant difference was observed between different treatments for crocin content. Comparing the reproductive traits of plants under two cultivation conditions, namely air, and field, revealed a reduction of 21%, 20%, and 12% in the number of flowers, fresh flower weight, and dry weight of stigma, respectively, within the field conditions. In summary, the findings suggest that, for optimal saffron production in coastal areas, the propagation of corms in the field at depths of 30 cm and 100 cm with proper drainage, followed by flowering of the propagated corms through aeroponic cultivation, could be a viable and economically sound approach for one-year saffron cultivation in the Sari plain region.
Keywords
Aeroponic
Drainage
Reproductive traits
Secondary metabolite

Subjects

Behdani, M.A., & Fallahi, H.R. (2015). Saffron (Crocus sativus L.): Technical Knowledge Based on Research Approaches. University of Birjand Press. pp. 412. [In Persian].
Ebrahimi, M., Pouyan, M., Hoseini, S., Shahi, T., & Ragh Ara, H. (2021). Effect of mother-corm weight on the yield, reproductive growth, apocarotenoid content and production of daughter corms in saffron aeroponic cultivation. Journal of Saffron Research, 9(2), 335-351. (In Persian with English Summary).https://doi.org/10.22077/jsr.2021.4025.1151.
Gresta, F., Lombardo, G., Siracusa, L., & Ruberto, G. (2009). Effect of mother corm dimension and sowing time on stigma yield, daughter corms and qualitative aspects of saffron (Crocus sativus L.) in a Mediterranean environment. Journal of the Science of Food and Agriculture, 88(7), 1144-1150. https://doi.org/10.1002/jsfa.3177.
Hosseini, M., & Rahimi, H. (2018). Effect of irrigation regimes on yield and qualitative criteria of saffron (Crocus sativus L.). Journal of Saffron Research, 5(2), 247- 255. (In Persian with English Summary).
Jalali, A., Zaefarian, F., Torabi, B., & Abbasi, R. (2022a). Changes of some growth indices and yield of saffron (Crocus sativus L.) in different altitudes. Saffron Agronomy and Technology, 10(3), 195-213. (In Persian with English Summary). https://doi.org/10.22048/jsat.2022.340439.1460.
Jalali, A., Zaefarian, F., Torabi, B., & Abbasi, R. (2022b). The effect of maternal corm weight and planting depth on flower yield and daughter corm of saffron (Crocus sativus L.) in Sari Plain. Journal of Saffron Research, 10(2), 231-244. (In Persian with English Summary). https://doi.org/10.22077/jsr.2022.5568.1194.
Koocheki, A., & Seyyedi, S.M. (2020). Nutrition management and farm’s age affect saffron daughter corms behavior, nutrients uptake and economic water and fertilizer use efficiency: A large-scale on-farm experiment in Torbat Heydarieh, Iran. Communications in Soil Science and Plant Analysis, 51(9), 1161-1183.
Kumar, R., & Sharma, O.C. (2018). Enhancing saffron (Crocus sativus) productivity by land configuration and corm intensity manipulation under Kashmir condition. Indian Journal of Agricultural Sciences, 88(5), 798-804. https://doi.org/10.56093/ijas.v88i5.80098.
Kumar, R. (2009). Calibration and validation of regression model for non-destructive leaf area estimation of saffron (Crocus sativus L.). Scientia Horticulturae, 122, 142-145.
Molina, R.V., Valero, M., Navarro, Y., Guardiola, J.L., & Garcia-Luis, A. (2005). Temperature effects on flower formation in saffron (Crocus sativus L.). Scientia Horticulturae, 103, 361-379. ttps://doi.org/10.1016/j.scienta.2004.06.005.
Mollafilabi, A. (2014). The effect of new agricultural technologies on the characteristics of growth, yield, yield components of saffron flower and corm. Ph.D. Dissertation. Faculty of Agriculture, Ferdowsi University of Mashhad, Iran. [In Persian].
Rezvani, N., Sorooshzadeh, A., & Farhadi, N. (2012). Effect of nano-silver on growth of saffron in flooding stress. World Academy of Science, Engineering and Technology, 6, 519-524.
Rezvani Moghaddam, P., Khorramdel, S., Aminghafori, A., Shabahang, J., & Asadi, G.A. (2012). The effects of mushroom compost rate and corm density on corm yield and stigma yield of saffron (Crocus sativus L.). 4th International Saffron Symposium. October 22-25. Kashmir, India.
Sadat-Moslemi, F., Vaziri, A., Sharifi, G., & Gharechahi, J. (2021). The effect of salt stress on some secondary metabolites of saffron. Journal of Plant Research, 34(1), 263-274. [In Persian].