الفهرس 
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Abstract
The impact of three components i.e. protecto, Bacillus thuringiensis (B.t.), farmyard manure (FYM) and ammonia at two levels of application each as 0.9& 1.8 g, 42& 63; and 30& 60 ml/plant separately, where the first two components applied as soil amendments, whilst the third one as foliar spraying comparing to oxamyl at the recommended dose on controlling M. incognita infecting tomato cv. 888 or not and plant growth as well under greenhouse conditions during spring seasons of 2011& 2012. Results showed that all tested treatments ameliorated plant growth criteria of the infected and uninfected ones comparing to the checks. Moreover, as the level of farm-yard manure and ammonia raised from 42 to 63 g for the former and from 30 to 60 ml/plant separately for the latter as tomato plant height, total plant fresh weight, shoot dry weight, leaves dry matter, total yield of tomato fruit, diameter and number percentage increase values increased for both plant cases of seasons 2011& 2012, respectively comparing to the checks. Concerning chemical composition of tomato leaves i.e. total chlorophyll and total phenol content, N, P and K concentrations as influenced by M. incognita or not under the stress of tested the three components at two level each during spring season of 2011& 2012 under greenhouse conditions, results showed that there were great differences between the six treatments tested in total phenol and chlorophyll concentrations in plant leaves within the infected and uninfected plants of the two seasons. Tomato plants received protecto (B.t.) 1.8 or 0.9 g/plant generally contained the highest percentage increase values of total phenol content in tomato leaves of the infected plants that averaged 76.07& 73.21%, and 74.47& 72.37% for season 2011& 2012, respectively comparing to nematode alone followed by the high and low levels of farm-yard manure and ammonia, respectively. Regarding tomato fruit chemical composition i.e., N, P, K, lycopene, carotene, total soluble solid (T.S.S.), Vit. C. and acidity as affected by M. incognita infection or not under the stress of tested the three components at two levels each during spring seasons 2011& 2012 under greenhouse conditions resulted revealed that percentage increase values of N, P and K of tomato fruit were obviously higher in the infected plants than those the infected ones due to nematode parasiting tomato roots cv. 888. Among the six treatments tested, ammonia at high level (60 ml/plant) as foliar spraying surpassed other tested application in the increment percentage increase values of N (73.46& 89.33%), P (35.97& 39.64%), K (37.76& 46.21%) of seasons 2011& 2012 of the infected plants comparing to nematode, respectively. Similar trend was recorded for N, P and K concs. of ammonia treatment (at high level) with values of N (75.9& 94.4%), P (65.0& 61.8%); K (45.2& 60.0%) of the uninfected plants of seasons 2011& 2012 comparing to check.