Effect of zeolite on physiological and biochemical attributes of Proso millet (Panicum miliaceum) in deficit irrigation conditions

Document Type : Research Paper

Authors

1 Associate Professor, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran

2 Ph. D. Candidate, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

Abstract

Drought stress is the most important challenges facing agricultural production, especially in developing countries. Zeolite application can ameliorate the harmful effects of drought stress in crops. In order to evaluate the effect of deficit irrigation (supply of 100, 75, 50 and 25 percent of crop water requirement) and zeolite (0, 5 and 10 t/ha) levels on Proso millet, an experiment was conducted as split block design in 2015 at Shahre Kord University. Result showed that deficit irrigation reduced plant height, leaf area index (LAI), relative water content (RWC), grain yield and its components, biological yield, harvest index, biological yield, water use efficiency and chlorophyll a and b. Also deficit irrigation increased super oxide dismutase (SOD), catalase (CAT), peroxidase (POD) activity, proline and carotenoid. It is noteworthy that zeolites application reduced the harmful effects of deficit irrigation. At all deficit irrigation regimes, application of 10 /ha zeolite resulted the highest grain yield. The highest yield loss (77.2%) was obtained with 25% of crop water requirement compared to control treatment (100% of water requirement and the zeolite application). Overall, results showed that under limited water conditions, application of zeolite reduced the negative effects of drought stress, therefore application of 10 t/ha zeolite is recommended in the cultivation of millet at limited water resources conditions.

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References

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Iranian Journal of Field Crop Science
Volume 48, Issue 2 - Serial Number 2
September 2017
Pages 443-452

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History

  • Receive Date: 01 February 2016
  • Revise Date: 12 July 2016
  • Accept Date: 25 July 2016
  • Publish Date: 23 August 2017

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