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43831

CHEMICAL CONTROL OF GUAVA DIE-BACK AND RESPONSE OF GUAVA CULTIVARS TO THE DISEASE IN EGYPT

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Last updated: 03 Jan 2025

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Abstract

Guava (Psidium guajava L.,) die-back disease caused by Botryodiplodia theobromae Pat., is a destructive disease, considered one of the most important and economic disease of guava. Amistar Top 325-32.5% E.C. gave the highest decreasing of linear growth and amount of growth of isolate code No., Q.K.4., followed by Camzin 50% W.P., Monceren 25% W.P. and Montro 30% E.C. Meanwhile, Ridomil Gold/Plus 42.50% W.P., Copral 50% W.P., Eminent 12.50% E.W. and Thiovat Jet 80% W.G. exhibited a lowest effect in reducing of linear growth and amount growth of B. theobromae isolate code No., Q.K.4. Amistar Top 325-32.5% E.C. was the most efficient fungicide in reduce disease incidence and disease severity infield of B. theobromae isolate code No., Q.K.4., followed by Camzin 50% W.P., Monceren 25% W.P., Montro 30% E.C. Meanwhile, Ridomil Gold/Plus 42.50% W.P., Copral 50% W.P., Eminent 12.50% E.W. and Thiovat Jet 80% W.G. showed a lowest efficient in reducing the disease incidence and disease severity. Soil drench method of fungicides application was the higher efficient method in elimination of percentage of disease incidence and disease severity followed by foliar spray application, relatively. Banaty transplant was the most susceptible cultivar to the all tested B. theobromae isolates, whereas cultivar Gizy Ahmr was the lowest susceptible with the same isolates, information about cultivar reaction of guava transplants against B. theobromae is still scanty.

DOI

10.21608/ajs.2019.43831

Keywords

guava, Psidium Guajava L, Botryodiplodia theobromae Pat, Guava Die-back, chemical control, cultivar reaction

Authors

First Name

A.

Last Name

Abd El-Aziz

MiddleName

S.

Affiliation

Plant Pathology Research Institute, Agric. Research. Cent., Giza, Egypt.

Email

ahmed.sabry617@yahoo.com

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Orcid

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Volume

27

Article Issue

1

Related Issue

6761

Issue Date

2019-03-01

Receive Date

2019-01-30

Publish Date

2019-03-01

Page Start

807

Page End

823

Print ISSN

1110-2675

Online ISSN

2636-3585

Link

https://ajs.journals.ekb.eg/article_43831.html

Detail API

https://ajs.journals.ekb.eg/service?article_code=43831

Order

73

Type

Original Article

Type Code

668

Publication Type

Journal

Publication Title

Arab Universities Journal of Agricultural Sciences

Publication Link

https://ajs.journals.ekb.eg/

MainTitle

CHEMICAL CONTROL OF GUAVA DIE-BACK AND RESPONSE OF GUAVA CULTIVARS TO THE DISEASE IN EGYPT

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Article

Created At

22 Jan 2023