EFFECT OF NPK FERTILlZERS ON COTTON INFESTATION WITH WHITEFLY AND PINK BOLLWORM | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 7, Volume 28, Issue 3, March 2003, Page 2299-2305 PDF (299.08 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2003.243142 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Fayza H. Sharaf, | ||||
| Plant Protection Research Institute Agric. Res. Center, Dokkl, Cairo | ||||
| Abstract | ||||
| The effects of the major p < /em>lant nulrients, NPK on cotton infestation by Bemisia tabaci (Genn): Pectinophora gossyp < /em>iella (Saund.) and some associated wedalors. were conducted at Sakha Agricultural Research Station, Kafr El-Sheikh Governorate. Egypt during 1997 and 1998 seasons. The obtained results revealed thal the effect 0' phosphorus was pronounced on the occurrence of white ny, while the effect of nitrogen was variable. All fertilizatiOn treatment~ have no effect on the population it.e of the pink bollworm. As for associated predator, the use of normal fertilization exhibited relative increase of the population size. | ||||
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