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Effect of npk fertilizers on cotton infestation with whitefly and pink bollworm [electronic resource].

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Sharaf, Fayza H

Language: English Summary language: Arabic Description: p.2299-2305Other title:

تأثير النيتروجين والفسفور والبوتاسيوم كعناصر سمادية على إصابة القطن الذبابة البيضاء ودودة اللوز القرنفلية [Added title page title]

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Mansoura University journal of agricultural sciences, 2003 v. 28 (3) [electronic resource].

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In: Mansoura University Journal of Agricultural Sciences 2003.v.28(3)Summary: The effects of the major plant nutrients, NPK on cotton infestation by Bemisia tabaci (Genn); Pectinophora gossypiella (Saund.) and some associated predators, were conducted at Sakha Agricultural Research Station, Kafr EL-Sheikh Governorate, Egypt during 1997 and 1998 seasons. The obtained results revealed that the effect of phosphorus was pronounced on the occurrence of whitefly, while the effect of nitrogen was variable. All fertilization treatments have no effect on the population size of the pink bollworm. As for associated predator, the use of normal fertilization exhibited relative increase of the population size.

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The effects of the major plant nutrients, NPK on cotton infestation by Bemisia tabaci (Genn); Pectinophora gossypiella (Saund.) and some associated predators, were conducted at Sakha Agricultural Research Station, Kafr EL-Sheikh Governorate, Egypt during 1997 and 1998 seasons. The obtained results revealed that the effect of phosphorus was pronounced on the occurrence of whitefly, while the effect of nitrogen was variable. All fertilization treatments have no effect on the population size of the pink bollworm. As for associated predator, the use of normal fertilization exhibited relative increase of the population size.

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