Journal of
Horticulture and Forestry

  • Abbreviation: J. Hortic. For.
  • Language: English
  • ISSN: 2006-9782
  • DOI: 10.5897/JHF
  • Start Year: 2009
  • Published Articles: 274

Full Length Research Paper

Tolerance of bio-fertilized Delonix regia seedlings to irrigation intervals

Amira Sh. Soliman
  • Amira Sh. Soliman
  • Natural Resources Department, Institute of African Research and Studies, Cairo University, Giza, Egypt.
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Ebtsam M. Morsy
  • Ebtsam M. Morsy
  • Agriculture Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Centre, Giza, Egypt.
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Osama N. Massoud
  • Osama N. Massoud
  • Agriculture Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Centre, Giza, Egypt.
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  •  Received: 28 November 2014
  •  Accepted: 27 January 2015
  •  Published: 01 March 2015

Abstract

This work aims to investigate the effect of different bio-fertilizers (Arbascular mycorrhizae fungi, Azotobacter chroorcoccum, yeast strains and mixture of all inoculum) and irrigation intervals (3, 6 or 12 days) on the growth and chemical composition of Delonix regia seedlings grown in sandy soil. Pot experiments were conducted using a randomized complete blocks design with three replicates during two successive seasons of 2013 and 2014. The results indicated that dual bio-fertilizers led to significant increase in growth characters  (plant height, root length, number of branches/plant, total fresh and dry weights/plant), microbial populations and AM fungi colonization (%), enzymatic activities, chemical composition (plant pigments, total carbohydrates, proline content, N, P, K) besides antioxidant enzymes such as catalase (CAT),and peroxidase (POD) compared to the un-inoculated seedlings (as control) at the recommended dose of NPK chemical fertilizers under the same conditions. Generally, these results undoubtedly confirm that dual bio-fertilizers could replace the use of chemical fertilizers and consequently improve the quality and quantity of D. regia.

 

Key words: Delonix regia, Arbascular mycorrhizae fungi, Azotobacter chroorcoccum, yeast strains - growth characters, chemical composition.