الفهرس 
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Abstract
The impact of solid botanical composts namely rice hull, rice straw, tomato, potato, guava and citrus as well as city waste compost, introduced at three times of application (7, 10, 15 days before transplanting) on plant growth parameters of eggplant cv. Black Beauty infected with M. incognita and R. reniformis was carried out under greenhouse conditions. Irrespective to decomposition periods, results revealed that most botanical and city waste composts were found to increase the growth parameters of eggplant (plant length, shoot weight, root weight and dry shoot weight) with various degrees. However, in most screened treatments, the longer decomposition period the better increase in total plant fresh weight can be noticed. A significant improvement in total plant fresh weight was noticed with compost derived from rice hull (RHC) with percentage of increase amounted to 120.6, 181.8 and 173.7% when applied 7, 10 and 15 days respectively. Similar trend was noticed with dry shoot weight. However, non significant differences in total plant fresh weight and dry shoot weight were noticed between 10 and 15 days application. On the other hand, pots receiving guava compost (GC) ranked the second followed by rice straw compost (RSC) with percentage of increase in total plant fresh weight reached 128.2 and 121.8% when applied 15 and 10 days before transplanting respectively.
In conclusion, the acarid mite, T. putrescentiae showed promising results as a biocontrol agent against eggmasses of M. incognita, R. reniformis and females of M. incognita under laboratory conditions. Moreover, solid or liquid quantitatives of composts derived from plant residues as well as city waste compost and /or oil cakes soil amendments could be involved in integrated root-knot and reniform nematode management for eggplant in conventional and organic production systems. The screened bioagents viz. composts, VAM and oil cakes acted as plant growth promoters and induced resistance by increasing plant phenol, carbohydrates, proteins and nitrogen.