247565

ECONOMIC INJURY LEVEL FOR THE TWO SPOTTED SPIDER MITE TETRANYCUS URTICAEKOCH 2-0N CUCUMBER UNDER PLASTIC HOUSE CONDITIONS

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Last updated: 04 Jan 2025

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Abstract

To estimate economic injury level "Ell" for the two spotted mite, Tetranycus urticae Koch on cucumber artificial infestation in general average rate 1, 2, 5 and 10 individual mite linch2 were achieved in four separate green plastic houses besides the control one. The experiment was carried out through the two successive seasons, 02-2003 and 03-2004 and with four replicates for each infestation rate, at private farms in Serapium district, Ismailia governorate. The effect of mite on crop yield was evaluated quantitatively. The effect of mite on crop quality was reflected on market's prices. Crop was harvested just after ripping and reaching the suitable marketing size (about 12 cm.long.), weighed and marketed. Management costs, including labour, acaricides and equipment renting price were calculated. Through the first season the yields were 2359, 2066, 1757, and 1323 kg./plastic house, representing 18,28.19,38.93 & 54.0 % reduction in yield under the infestations levels of 1, 2, 5 and 10 mites linch 2 respectively, compared to that of uninfected plastic house that reached 2877 kg./ plastic house. The corresponding figures in the second season were 1843, 1571, 1272, and 1006 kg. I Plastic house representing 20.49, 32.23, 45.13, and 56.6% reductions in yield, compared with that of (2318 kg./ plastic house). Management costs were 171.58 and 157.9 lE throughout the two growing seasons 02-2003 and 03‌ 2004, respectively. The respective fruit prices for kg were 1.1 and 0.92 L.E throughout the two growing seasons 02-2003 and 03-2004, respectively. Economic injury level (Ell) ranged from 1.31 to 1.52 mites linch2. These values of (Ell) could be used as a guideline in the profit of mite control management of cucumber plants under plastic house condition. 

DOI

10.21608/ejar.2005.247565

Authors

First Name

ABD-ALLAH M.

Last Name

EL-ADAWY

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Affiliation

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

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Orcid

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First Name

BADRAUA I.

Last Name

EL-ESNAWY

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Affiliation

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

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Volume

83

Article Issue

3

Related Issue

35304

Issue Date

2005-09-01

Receive Date

2004-11-23

Publish Date

2005-09-01

Page Start

1,217

Page End

1,223

Print ISSN

1110-6336

Online ISSN

2812-4936

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https://ejar.journals.ekb.eg/article_247565.html

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https://ejar.journals.ekb.eg/service?article_code=247565

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12

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Original Article

Type Code

1,041

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Journal

Publication Title

Egyptian Journal of Agricultural Research

Publication Link

https://ejar.journals.ekb.eg/

MainTitle

ECONOMIC INJURY LEVEL FOR THE TWO SPOTTED SPIDER MITE TETRANYCUS URTICAEKOCH 2-0N CUCUMBER UNDER PLASTIC HOUSE CONDITIONS

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Article

Created At

22 Jan 2023