In collaboration Iranian Medicinal Plants Society

Document Type : Research Paper

Authors

1 Ph.D. Student in Agronomy, University of Birjand and Researcher of Saffron Research Institute, University of Torbat Heydariye

2 Associate Professor, Dept. of Agronomy & Plant Breeding and Faculty Member of Saffron Research Group, University of Birjand

3 Professor, Dept. of Agronomy & Plant Breeding and Faculty Member of Saffron Research Group, University of Birjand

4 Assistant Professor, Dept. of Plant Production, and Researcher of Saffron Research Institute, University of Torbat Heydariye

Abstract

In order to investigate the effect of salinity levels, bio fertilizer and nano fertilizer of Fe on quantitative and qualitative characteristics of saffron, a factorial experiment was conducted as a combined analysis in location by a randomized complete block design with three replications. Bio fertilizer was applied at four levels of zero, 500, 1000 and 1500 kg ha-1 and nanoparticles of Fe was applied at two levels of non-consumption and application of four liters per hectare. These factors were investigated in two locations with different irrigation salinity (2.29 and 4.49 dS m-1). The results showed that there were the highest values for traits of weight of flower, number of flowers, dry weight of stigma and weight of stigma + style in irrigation conditions with a salinity of 2.29 dS m-1. In the mentioned traits, under the conditions of irrigation with salinity of 2.29 dS m-1, there was no significant difference between the application and non-application levels of nano fertilizer of Fe; However, in the conditions of irrigation with salinity of 4.49 dS m-1, the application of nano fertilizer of Fe compared to non-application, caused a significant increase of 35.5, 33, 32.8 and 34.1% of these traits, respectively. Comparison of mean for triple interaction showed that at both salinity levels of 2.29 and 4.49 dS m-1, in the absence of bio fertilizer, the application of nano fertilizer of Fe could significantly increase the amount of crocin. However, in the application of different levels of bio fertilizer, the application of nano fertilizer of Fe reduced significantly the amount of crocin. The highest amount of safranal was observed in salinity of 4.49 dS m-1 and in the treatments of application of 500 and 1500 kg per hectare of bio fertilizer and application of nano fertilizer of Fe as well as non-application of bio fertilizers and nanoparticles of Fe. Irrigation with salinity of 4.49 dS m-1 in bio fertilizer levels (except for 500 kg ha-1) caused a significant increase in picrocrocin. In generally, it seems that for achieving higher yields, irrigation with less saline water and in case of irrigation with water by more than salinity of 4.2 dS m-1, the use of nano fertilizer of Fe to moderate the effects of salinity is recommended.

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Main Subjects

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