Latent Infection of Olive Leaf Spot Disease on Palestinian Olives

Hajjeh, Hajaj

doi:10.9734/arrb/2014/9845

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…High temperatures hinder the development of the disease. (Hajjeh et al, 2014, Moral et al, 2014, Lopez et al, 2000.…”

Section: Peacock Spotmentioning

confidence: 99%

Symptomology of Major Fungal Diseases on Olive and Its Management

Moustaine

et al. 2022

AustinJEnvironToxicol

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The olive tree count among the most important oil-producing crops throughout the Mediterranean region. It has nutritional, social, economic, phytotherapeutic and ecological importance. All of the olive tree diseases cause considerable drops in yield and represent a permanent threat to olive growing in the world. The main fungal diseases of the olive are: Verticillium wilts, Root rot fungi, Sooty mold, Peacock spot, Anthracnose, Cercospora leaf spot of olives and Dalmaticosis of the olive. In this article we have cited for each disease the main symptoms and their means of control.

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“…High temperatures hinder the development of the disease. (Hajjeh et al, 2014, Moral et al, 2014, Lopez et al, 2000.…”

Section: Peacock Spotmentioning

confidence: 99%

Symptomology of Major Fungal Diseases on Olive and Its Management

Moustaine

et al. 2022

AustinJEnvironToxicol

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“…Infection with S. oleagina is normally associated with high humidity and winter conditions (cool and low light), where high temperatures restrict spore germination (Obanor et al 2011;Al-Khatib et al 2010). Growth of the fungus was found to be most prevalent in the period from late autumn to spring and of minor significance in the period from the beginning of July until the middle of November (Viruega and Trapero et al 20111999;Hajjeh et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Conidium production is optimal at 15ºC and high humidity (100%) (Obanor et al 2011;Graniti 1993;Guechi and Girre 1994). In Palestine, Hajjeh et al (2014) reported that the infection with OLS is minimum during summer season.…”

Section: Introductionmentioning

confidence: 99%

Biological control of Peacock spot disease caused by Spilocaea oleagina on Olive using bacteria.

سلمان

2020

PTURJ

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The olive leaf spot disease caused by the fungus Spilocaea oleagina (Cast.) Hughes (syn. Cycloconium oleagina) is one of the most destructive diseases on olive trees causing losses that may reach 20% of the yield. The disease is controlled by the application of chemical fungicides which is not always feasible in providing proper protection against the pathogen. In this work we report the efficacy of Pseudomonas fluorescenc isolate ORS3 and Bascillus atrophaeus isolate Bat in controlling the disease under field conditions. An Olive field in, Tulkarm governorate, Palestine was selected. The olive trees were 5-10 years old and were highly infected with the olive leaf spot. Trees were sprayed with bacteria formulated in oil. Control trees were sprayed with water. For evaluation of bacterial efficacy against the disease, olive leaves were collected before and after application of the bacteria. Germination of conidia latent infection and severity were determined. In addition to that, bacterial viability was assessed. Results of the work revealed that the bacteria were able to inhibit conidial germination of the fungus. The percent of reduction in conidial germination (85.8 and 70.2%) in the presence of P. fluorescenc isolate ORS and B. atrophaeus isolate Bat, respectively was significantly lower than that in the control or in leaves sprayed with 10% oil (69.1 and 56.1%, respectively). After two weeks of spraying, the percent of latent infectoin (figure 4) was significantly (p<0.05) lower on leaves sprayed with P. fluorescenc isolate ORS3 and B. atrophaeus isolate BAT (5.1 and 3.8% latent infection, respectively). However, bacterial shelf life on the surface of olive leaves was reduced after three days of spraying (i.e no bacteria were re-isolated). The results indicated that the bacteria can be used for control of the leaf spot disease. Further studies are required to evaluate the efficacy of the bacteria under different environmental conditions.

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Antifungal Effect of Ambrosia artemisiifolia L. Extract and Chemical Fungicide Against Spilocaea oleagina Causing Olive Leaf Spot

Kleef

Salman

2021

Arab J Sci Eng

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Latent Infection of Olive Leaf Spot Disease on Palestinian Olives

Cited by 4 publications

References 15 publications

Symptomology of Major Fungal Diseases on Olive and Its Management

Symptomology of Major Fungal Diseases on Olive and Its Management

Biological control of Peacock spot disease caused by Spilocaea oleagina on Olive using bacteria.

Antifungal Effect of Ambrosia artemisiifolia L. Extract and Chemical Fungicide Against Spilocaea oleagina Causing Olive Leaf Spot

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