EFFECT OF DIFFERENT RATES OF (N, P, K) FERTILIZERS ON BEMISIA TABACI (GENN.) INFESTATION ON TOMATO AND ITS EFFECT ON THE YIELD | ||
| Egyptian Journal of Agricultural Research | ||
| Article 8, Volume 77, Issue 3, September 1999, Pages 1067-1073 PDF (1.74 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.1999.336972 | ||
| Author | ||
| KHAYRAT K. EL-RARE | ||
| Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt | ||
| Abstract | ||
| The relation between the major plant nutrients, NPK and their combinations on tomato infestation with B.tabaci (Genn.), was studied in Imbaba district, Giza Governorate during 1995-1996. An obvious increase of this pest accompanied by decreasing in tomato yield was observed on the plants treated with high levels of N. (ammonium sulphate, 21% N). On the other hand, the study proved that the moderate level of N (1 50 unit) corresponding with potassium sulfate [Potasium sulfate, 60 units/K20)] and superphosphate (60 unit/P202) - in mixtures-gave low population of B.tabaci and higher level in yield. | ||
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