الفهرس 
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Abstract
The present study was carried out during 1998 and 1999 seasons to evaluate the effect of soil treatment and foliar spraying of some insecticides in controlling the citrus leafminer on Navel orange trees. Aldicarb and diazinox residues were determined on fruit pulps. Also some fruit qualities were determined. The results of two seasons 19981999 at Bashaloush indicated that aldicarb 15% granules at rate of 100g / tree (tree 25 years old) as soil treatment gave the best control of the citrus leafminer, while Diazinox treatments (100 and 150g/tree) were less effective. Results of two years experiments during 1998 and 1999 at ElBaramoon revealed that aldicarb at rate of 50 g/tree (four years old) was more effective and gave a best control of the citrus leafminer followed by rate of 30g/tree. whereas, diazinox treatments (50 and 75 g/tree) were the least effective. Results of the foliar spray experiments during 1998 and 1999 seasons showed that the most effective treatments in controlling larval population of the citrus leafminer were: Carbosulfan + super misrona, carbosulfan + Kz oil, monocrotophos + Kz oil, carbosulfan alone, monocrotophos + super misrona, and monocrotophos alone, respectively. While the mineral oils, super misrona and Kz were the least effective. Also, it is appeared that addition of super misrona or Kz oil to carbosulfan and monocrotophos increased the efficiency of the two insecticides. Residue analysis showed that, when aldicarb was used at rate of 100g/tree, the amounts of the insecticide detected in fruits pulp were 0.001 ppm, when diazinox was used at rate 100 and 150 g/tree, the amounts detected were 0.009 and 0.019 ppm, respectively. The values of aldicarb and diazinox residues recorded herein were lower than the allowed tolerance. Accordingly, the orange fruits can be marketed safely for human consumption. After three and four months from soil treatment, the results showed that total sugar, TSS, acidity, and vitamin C not affected with aldicarb as soil treatment when compared with the untreated control, with exception of TSS after three months. The high rate of diazinox decreased only total acidity and vitamin C after three months, while the low rate of diazinox decreased only vitamin C after three and four months from soil treatments.