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253972

EFFECT OF APPLICATION TIME OF THREE ISOLATES OF Trichoderma harzianum ON THE BIOCONTROL OF SORGHUM DAMPING-OFF

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Last updated: 04 Jan 2025

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Abstract

Three isolates of Trichoderma harzianum i.e. Isolate 1, (354.33,
Netherlands), Isolate 2 (63059, Germany) and Isolate 3 (64256, Germany) were
applied to the soil at different times for the control of Drechslera sp < /em>., three isolates of
Fusarium moniliforme and Phoma sp < /em>., the causal organisms of sorghum damping-off
under greenhouse conditions. The biocontrol fungi were applied to the soil either
before, at the time or after sowing. The addition of Trichoderma isolates one week
after sowing proved to be the most effective in reducing the disease except in case of
Phoma sp < /em>. whereas the isolates application one week before sowing was better for
disease control up to 8 weeks of sowing. Trichoderma 12 was the most effective if
added before sowing as it reduced mortality percentage from 65.9% to 39.6%.
However 11 was better at the time of sowing as it reduced the disease from 48.8% to
40.4%. Trichoderma 13 was the most effective when applied after sowing as it reduced
mortality percentage from 50% to 36.3%. Maximum shoot length was achieved by
using Trichoderma 11 before (72.7 cm) or at the time of sowing (51.8 cm) or [2 after
sowing (88.8 cm). Maximum root length was achieved by using Trichoderma 13 before
(31.4 cm) or after sowing (21.8 ern) and 11 at the. time of sowing (27.4 em),
Trichoderma 11 gave the highest dry weight of shoot (before and at the time of
sowing) and root (after and at the time of sowing), however, Trichoderma 12 gave the
maximum dry weight of shoot (after sowing) and root (before sowing). These results
indicated that although the use of the three isolates decreased the disease from
54.9% to 44.6%, but the effectiveness of the isolates of Trichoderma harzianum in
controlling the disease and promoting growth depends on the used isolate and the
time of application.

DOI

10.21608/jpp.2002.253972

Keywords

T. harzianum, Sorghum, Damping-off, F. moniliforme, Drechslera sp, Phoma sp

Authors

First Name

Shahda T.

Last Name

Waffa,

MiddleName

T.

Affiliation

Plant Pathology Department, Faculty of Agriculture, El-Shatby, Alexandria University, Egypt.

Email

drshahda@hotmail.com

City

-

Orcid

-

First Name

Amal

Last Name

Hemeda

MiddleName

A. H.

Affiliation

Plant Pathology Department, Faculty of Agriculture, El-Shatby, Alexandria University, Egypt.

Email

-

City

-

Orcid

-

First Name

M.

Last Name

Shehata

MiddleName

R. A.

Affiliation

Plant Pathology Department, Faculty of Agriculture, El-Shatby, Alexandria University, Egypt.

Email

-

City

-

Orcid

-

Volume

27

Article Issue

4

Related Issue

36107

Issue Date

2002-04-01

Receive Date

2002-03-13

Publish Date

2002-04-01

Page Start

2,155

Page End

2,171

Print ISSN

2090-3669

Online ISSN

2090-374X

Article File

JPP_Volume 27_Issue 4_Pages 2155-2171.pdf

PDF . 4.6MB

Link

https://jpp.journals.ekb.eg/article_253972.html

Detail API

https://jpp.journals.ekb.eg/service?article_code=253972

Order

13

Type

Original Article

Type Code

887

Publication Type

Journal

Publication Title

Journal of Plant Production

Publication Link

https://jpp.journals.ekb.eg/

MainTitle

EFFECT OF APPLICATION TIME OF THREE ISOLATES OF Trichoderma harzianum ON THE BIOCONTROL OF SORGHUM DAMPING-OFF

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Type

Article

Created At

22 Jan 2023