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On the beneficial natural role of phytomyza orobanchia kalt against broom rape in Egypt and trial applied release of this bioagent
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Abstract: A study was carried out during 1998 and 1999 broad-bean seasons to estimate the exact natural beneficial role of the monophagous broom-rape fly, Phytomyza orobanchia Kalt, in destroying the immature seeds of the parasitic weed Orobanche crenata Forsk in fields of different Egyptian governorates.
Percentages of infestation averaged 30.54 (8.67 – 55) % in 1998 season and 55.28 (18.67 – 83.97) % in 1999 indicating more abundance and activity in the latter season. This may be attributed to changes in environmental conditions and / or the reductions in insecticidal application in 1999 than 1998 season. Generally, in Egyptian fields, the fly proved as still active, naturally, in reducing the seed bank of broom-rape in soil, and this role has to be increased by inundative releases of the fly.
Two weeks after releasing P. orobanchia in plastic screen cages covering faba-bean plants infested with broom-rape, the mean percentage of infested capsules was found to be increased about 7 times more than that recorded in the control cage, and this percentage remained higher for up to 5 weeks after release. Data proved the necessity of early release of the fly, followed by other releases.
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| Publication year |
2000
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| Pages |
99
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| Availability location |
المعمل المركزى لبحوث الحشائش -9 ش الجامعة -مركز البحوث الزراعية -جيزة
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| Availability number |
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| Organization Name |
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| City |
Hamburg
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| serial title |
3rd international crop Science Congress 17-22 August 2000
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| Author(s) from ARC |
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| External authors (outside ARC) |
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| Agris Categories |
Weeds and weed control
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AGROVOC
TERMS |
Egypt.
Faba beans.
Phytomyza.
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| Publication Type |
Conference/Workshop
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