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13141

Effect of planting date on seasonal abundance of the Aphis craccivora koch and the associated predators in the new Valley-Egypt

Article

Last updated: 03 Jan 2025

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Abstract

The population density of A. craccivora on broad bean plants of the recommended sowing date fluctuated in scarcely numbers to attain the peak (17.50 and 3.00 individuals/plant) during the third week of November of 2012/2013 and 2013/2014 seasons, respectively. On the other hand, the highest numbers (0.27 and 0.06 individuals/plant) of the coccinellid beetles included the larvae and adults of C. undecimpunctata and C. septempunctata were recorded during the second week of December and the third week of November of the two successive seasons, respectively. There was an insignificant positive and / or negative simple correlation (r) between the number of the pest and the population density of the coccinellid beetles. The plants cultivated in the early planting date (first of October) harbored the highest number of the pest with an average of (22.72 individuals/plant).  Meanwhile, the plants of the late planting date (end of October) harbored the lowest number of the pest with an average of (2.55 individuals/plant). Broad bean plants of the early and recommended sowing date which harbored the high levels of infestation with A. craccivora recorded the highyields (gm)/plant. Meanwhile the plants of the late planting date which harbored the minimum number of the pest recorded the lowest yield (gm)/plant during 2012/2013 and 2013/2014 seasons.

DOI

10.21608/eajbsa.2014.13141

Keywords

Aphis craccivora . predators, the new Valley-Egypt

Authors

First Name

Gameel

Last Name

M.

MiddleName

S. M.

Affiliation

Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt

Email

salah_gameel@yahoo.com

City

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Orcid

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Volume

7

Article Issue

2

Related Issue

2450

Issue Date

2014-12-01

Receive Date

2014-10-26

Publish Date

2014-12-01

Page Start

97

Page End

103

Print ISSN

1687-8809

Online ISSN

2090-0813

Link

https://eajbsa.journals.ekb.eg/article_13141.html

Detail API

https://eajbsa.journals.ekb.eg/service?article_code=13141

Order

11

Type

Original Article

Type Code

667

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences. A, Entomology

Publication Link

https://eajbsa.journals.ekb.eg/

MainTitle

Effect of planting date on seasonal abundance of the Aphis craccivora koch and the associated predators in the new Valley-Egypt

Details

Type

Article

Created At

22 Jan 2023