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English :
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Effect of potassium fertilizer on the population of certain sucking insects and their associated predators in cotton fields.
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Arabic :
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تأثير التسميد البوتاسى على تعداد بعض الحشرات الثاقبة الماصة وعلى الأعداء الحيوية المصاحبة لها على نباتات القطن
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| Abstract |
Cotton plant is liable to be attacked all over its growing season by certain sucking insects, such as cotton aphids (Aphis gossypii Colov.), cotton jassid (Empoasca lypica de Berg), cotton whitefly (Bemisia tabaci Genn.) and cotton thrips (Thrips tabaci L.). The effect of soil and foliar applications with different rates of potassium sulfate fertilizer (48 % Kz0) was studied on the infestation of the previous insects and their associated predators, Lady-bird beetles (Coccinella spp. And Scymnus spp.), Aphid lion (Chrysoperla camea), Anthocoride bua (Orius spp.) Rove beetles (Paederus alfierru) and true spiders which attacked Giza 89 cotton variety cultivated during 2002 and 2003 seasons at Sakha Agricultural Research Station, Kafr El-Sheikh, Governorate Egypt.
The results showed that insignificant differences were observed between treated and untreated plants, by potassium fertilizer in case of soil application with 50 and 25 kg/fed. of fertilizer, and slight effect was observed in reducing the population of sucking insects. On the other hand, significant differences were observed between two foliar applications with 8.165 kg/fed. and 16.33 kg/fed. of potassium fertilizer and untreated plants. Generally, potassium fertilizer reduced the population of 8. tabaci than other insects. The effect of potassium fertilizer on the population of studied predators in the two seasons, showed that the three soil treatments had a slight effect on these predators, while the two foliar treatments affected the abundant of predators significantly than the untreated one where they reduced the mean numbers of predators than untrerated.
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| Publication year |
2005
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| Pages |
5607-5615
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| Availability location |
مكتبةمعهد بحوث وقاية النباتات-7ش نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
Plant Protection Research Institute (PPRI)
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| City |
المنصورة
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| serial title |
مجلة جامعه المنصورة للعلوم الزراعية
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| ISSN |
1110-0346
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| Author(s) from ARC |
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| Agris Categories |
Protection of plants - General aspects
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AGROVOC
TERMS |
Aphis gossypii.
Bemisia tabaci.
Chrysoperla carnea.
Coccinella.
Cotton.
Empoasca.
Fields.
Orius.
Paederus.
Potash fertilizers.
Predators.
Scymnus.
Sucking insects.
Thrips tabaci.
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| Publication Type |
Journal
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