Protective Treatments against Soilborne Pathogens in Citrus Orchards

Abd-Elgawad, Mahfouz M. M.; El-Mougy, Nehal S.; El-Gamal, Nadia G.; Abdel-Kader, M. M.; Mohamed, M. I.

doi:10.2478/v10045-010-0079-0

Cited by 24 publications

(8 citation statements)

References 15 publications

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“…Chế phẩm EM gồm các vi sinh vật hữu hiệu, trong đó bao gồm Bacillus sp., Pseudomonas sp., Trichoderma harzianum có khả năng sản sinh ra hoạt chất kháng sinh và enzym thủy phân tiêu diệt tuyến trùng [6,18,19]. Kết quả nghiên cứu cho thấy, mật độ tuyến trùng trong đất ở công thức bổ sung chế phẩm EM cao nhất, lên đến 2.680±76 cá thể/250 g đất, mật độ tuyến trùng trong rễ ở mức trung bình so với các công thức thí nghiệm khác, 53±6 cá thể/5g rễ.…”

Section: Hiệu Quả Phòng Trừ Tuyến Trùng Của Chế Phẩm Sinh Học Trong đunclassified

The Effectivity of Bioinoculants on Suppressing Tylenchulus semipenetrans in Citrus Growing Soil in Cao Phong, Hoa Binh

Thu¹,

Thao²,

Trinh³

2019

EES

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Tylenchulus semipenetrans causes serious damages related to decline on citrus in Cao Phong district, Hoa Binh province. This study evaluated the effects of EM, AMF, AT+Ketomium and Chitosan-Super in the control of nematodes. In the laboratory condition, the T. semipenetrans was isolated from the soil and assessed for survival in the liquid medium containing EM and Chitosan-Super. The larval mortality rate reached 98.57% after 72 hours when using Chitosan-Super at 2% concentration. For pot experiments, T. semipenetrans and bioinoculants were infected into Hoa Binh red grapefruit rhizospheres. The results indicated that nematode density in the soil decreased the most in CT5 (Chitosan-Super), followed by CT4 (AT+Ketomium), CT3 (AMF+EM) and CT1 (AMF), CT2 (EM); nematode density in roots was the highest at CT5 of 132±27 individuals/5g of roots, while in CT1 there was no parasitic nematode on the red grapefruit root though its density in soil was high (2.424±125 individuals/250g of soil). Citrus grew normally in all of the experience formulas. Research results are an important basis for effective use of bioinoculants in preventing nematode parasitic on citrus.

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Section: Hiệu Quả Phòng Trừ Tuyến Trùng Của Chế Phẩm Sinh Học Trong đunclassified

The Effectivity of Bioinoculants on Suppressing Tylenchulus semipenetrans in Citrus Growing Soil in Cao Phong, Hoa Binh

Thu¹,

Thao²,

Trinh³

2019

EES

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“…Using an integrated approach to management of Fusarium spp. and the citrus nematode, Tylenchulus semipenetrans, in Egypt, Abd-Elgawad et al (2010) showed that the application of bacterial isolates contributed to a reduction of populations of these pathogens.…”

Section: Soil Amendments With Microbial Species To Control Diseasementioning

confidence: 99%

Effect of Nutrition and Soil Function on Pathogens of Tropical Tree Crops

McMahon¹

2012

Plant Pathology

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“…Several efforts have been made for sustainable management of sclerotinia stem rot of canola including the search for resistant genotypes (Barbetti et al ., ) and agronomic management (Abd‐Elgawad et al ., ). However, completely resistant genotypes of canola are very difficult to develop because the pathogen does not exhibit gene‐for‐gene specificity in its interaction with the host (Li et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Biological control of sclerotinia stem rot of canola using antagonistic bacteria

et al. 2015

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Stem rot caused by Sclerotinia sclerotiorum is a major fungal disease of canola worldwide. In Australia the management of stem rot relies primarily on strategic application of synthetic fungicides. In an attempt to find alternative strategies for the management of the disease, 514 naturally occurring bacterial isolates were screened for antagonism to S. sclerotiorum. Antifungal activity against mycelial growth of the fungus was exhibited by three isolates of bacteria. The bacteria were identified as Bacillus cereus (SC-1 and P-1) and Bacillus subtilis (W-67) via 16S rRNA sequencing. In vitro antagonism assays using these isolates resulted in significant inhibition of mycelial elongation and complete inhibition of sclerotial germination by both non-volatile and volatile metabolites. The antagonistic strains caused a significant reduction in the viability of sclerotia when tested in a greenhouse pot trial with soil collected from the field. Spray treatments of bacterial strains reduced disease incidence and yielded higher control efficacy both on inoculated cotyledons and stems. Application of SC-1 and W-67 in the field at 10% flowering stage (growth stage 4Á00) of canola demonstrated that control efficacy of SC-1 was significantly higher in all three trials (over 2 years) when sprayed twice at 7-day intervals. The greatest control of disease was observed with the fungicide Prosaro â 420SC or with two applications of SC-1. The results demonstrated that, in the light of environmental concerns and increasing cost of fungicides, B. cereus SC-1 may have potential as a biological control agent of sclerotinia stem rot of canola in Australia.

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Protective Treatments against Soilborne Pathogens in Citrus Orchards

Cited by 24 publications

References 15 publications

The Effectivity of Bioinoculants on Suppressing Tylenchulus semipenetrans in Citrus Growing Soil in Cao Phong, Hoa Binh

The Effectivity of Bioinoculants on Suppressing Tylenchulus semipenetrans in Citrus Growing Soil in Cao Phong, Hoa Binh

Effect of Nutrition and Soil Function on Pathogens of Tropical Tree Crops

Biological control of sclerotinia stem rot of canola using antagonistic bacteria

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