تأثیر کودهای زیستی حل کننده فسفات پتاس و تثبیت کننده نیتروژن بر خصوصیات بنه زعفران تحت رژیم های مختلف آبیاری.

Saffron (Crocus sativus L.), a bulbous and perennial plant, is highly influenced by environmental factors such as light, moisture, temperature, and nutrition, which can significantly affect its growth and development. To investigate the effects of different biofertilizers and irrigation regimes on the characteristics of saffron corms and flowers, an experiment was conducted over two agricultural years (2021-2022 and 2022-2023) in the agricultural lands of Ziar city, a suburb of Isfahan. This experiment was carried out as split plots based on randomized complete block design with three replications. The main factor was deficit irrigation at three levels (50%, 75%, and 100% of the crop water requirement), and the sub-factors included eight levels: nitrogen-fixing free-living bacteria (B-N), potassiumsolubilizing bacteria (B-K), phosphate-solubilizing bacteria (B-P), their combination, and a control with no fertilizer. The results indicated that the highest number of corms (415 m-2), corm weight (2360 g. m-2), corm without scales belonged weight (2304 g. m-2), number of corms weighing 0-4 grams (244 m-2), number of corms weighing 4-8 grams (135 m-2), number of corms weighing 8-12 grams (55.3 m-2), number of corms weighing over 12 grams (64.2 m-2), dry stigma weight (0.492 g. m-2), and dry style weight (0.122 g. m-2) were obtained from the treatment with 100% water requirement and NPK biofertilizer combination. Ultimately, the best treatment for optimal performance was 100% water requirement combined with NPK biofertilizer. [ABSTRACT FROM AUTHOR]