The Reaction of Valerian to the Application of Bio-Fertilizers under Drought Stress

The Reaction of Valerian to the Application of Bio-Fertilizers under Drought Stress

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Background and Objective: The goals of study were to recognize the effect of bio-fertilizers on some quantitative and qualitative traits of Valerian under drought stress.Materials and Methods: The experiment was conducted as split plot based on randomized complete block design with three replicationes at the Research Farm of Urmia during two successive seasons of 2015-2016 and 2016-2017.The test factors included drought stress at three levels of irrigation 60, 90 and 120 mm evaporation from pan class A as the main factor and inoculation with bio fertilizer in eight levels including: 1-control (non-inoculation), 2-mycorrhiza, Addams Family 3-Azotobacter, 4-Azospirilum, 5- combination of Azotobacter and Azospirilum, 6- combination of Azotobacter and Mycorrhiza, 7- combination of Azosperilum and Mycorrhiza, 8-Azotobacter, Mycorrhiza and Azospirilum as subplots.

Results: The results showed that with increasing drought stress, Sports Nutrition - Confectionary - Non Edible the plant height, root dry weight, shoot dry weight, root length, root volume, phosphorus and potassium decreased, and the percentage of valeric acid increased.The application of bio-fertilizers increased all studied traits except of the Valernic acid content.Conclusion: Based on the results of this study, with the application of bio-fertilizers, the effects of drought stress on the valerian can be modulated and it has been used in pursuit of the goals of sustainable agriculture.