Management of root rot and wilt diseases of date palm offshoots using certain biological control agents and its effect on growth parameters in the New Valley Governorate, Egypt

Authors

  • M. E. A. EL-Morsi Plant Pathology Research Institute, Agriculture Research Center, Giza, Egypt.
  • M. F. Abdel-Monaim Plant Pathology Research Institute, Agriculture Research Center, Giza, Egypt.
  • E. F. S. Ahmad Date Palm Research and Development Center Laboratory, Agricultural Research Center, Giza, Egypt.

Keywords:

Biological control agents, Date palm offshoots, Growth parameters, Root rot and wilt diseases

Abstract

Root Rot and wilt diseases were observed on different date palm offshoots in nurseries and new orchards in New Valley Governorate, Egypt. Pathogenicity tests showed that Fusarium oxysporum, F. solani and F. moniliforme were the causal agents of root rot and wilt diseases on date palm offshoots (cv. Saidy). In addition, the isolates of the three Fusarium spp. differed in their pathogenic capabilities. The effect of Bacillus subtilis (BSM1), B. megaterium (BMM5), B. cereus (BCM8), Trichoderma viride (TVM2), T. harzianum (THM4) as bioagents against root rot/wilt disease complex of date palm offshoots under natural infection in nursery cultivated in two location (Al-Kharga and El-Dakhla) and also, on growth of the tested pathogenic fungi under laboratory were evaluated. Under laboratory conditions, all the tested bioagents inhibited the growth of the pathogenic fungi with different percentages. Bacillus megaterium and B. subtilis showed the highest percentage of fungal growth inhibition, while T. harzianum gave the lowest ones. At the field level, the application of bioagents significantly reduced the disease severity compared with untreated offshoots (control) in both locations. Bacillus megaterium and T. viride showed the highest protection against fungal causal agents, while B. cereus and T. harzianum gave the lowest ones in this respect. Moreover, the bioagents significantly improved the growth parameters of offshoots viz. plant height, number of leaves plant-1, leaflet number leaf-1, and leaf thickness. Bacillus megaterium and T. viride recorded the highest values of all growth parameters in El-Kharga and El-Dakhla locations, while B. cereus and T. harzianum gave the lowest ones. 

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Published

2015-02-02

How to Cite

EL-Morsi, M. E. A., Abdel-Monaim, M. F., & Ahmad, E. F. S. (2015). Management of root rot and wilt diseases of date palm offshoots using certain biological control agents and its effect on growth parameters in the New Valley Governorate, Egypt. Journal of Phytopathology and Disease Management, 2(1), 1–11. Retrieved from https://ppmj.net/index.php/ppmj/article/view/19

Issue

Vol. (2), Issue (1)

Section

Research Articles

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