Two field trials were carried out in Nubaryia region, El Beheira Governorate, Egypt throughout two successive seasons of 2012/2013 and 2013/2014 to examine the response of five multigerm varieties of sugar beet (Beta vulgaris, sacchrifera L.) as affected by agricultural sulphur (100 kg/fed.), and nematicide, furan (carbofuran10% G) at 13 kg/fed on root knot nematode, Meloidogyne incognita under naturally infected with it. A split-split plots design was used, where sulphur treatments in main

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... s, the nematicide, in the sub-plots, and sugar beet varieties were sown in the sub-sub-plots. Results obtained cleared that number of galls/ plant significantly affected by sulphur treatments, this finding was true in both growing seasons at the two studied age i.e. 3-momth or 6-month. Application of 100 kg sulphur reduced the values of galls from 15.6 to 9.0 in the 1 st age corresponding 38 to 25 in the 2 nd age. The percent of reduction amounted by 73.33% and 52.0% at age 3 and 6 months respectively. Once more, the differences between sulphur treatments did not reach the level of significant in respect to their effect on galls number in the 2 nd seasons of both ages. Concerning carbofuran (C) influence, the results showed that the used nematicide compound significantly reduced the percent values of gall's number, the amount of reduction reached to 140 and 152 % in the 1 st and 2 nd seasons at age of 3-month corresponding 172 and 226.4 % in 6-month age in the 1 st and 2 nd season respectively. This result may be indicating to the high specificity against nematode. Regarding the different combination between the studied factors, it could be noted that the 1 st and 2 nd order interaction were significantly effected on the values of gall's number/ root in both seasons whether at 3-momth or 6month ages. Once more by the end of growing season (six months), the values of egg masses significantly affected by the individual studied factors. Application of 100 kg sulphur significantly reduced the values of eggmasses/root. As for, the influence of carbofuran nematicide on egg masses, the available data appeared highly response to carbofuran in respect to its effect on egg masses in the two growing seasons, using carbofuran et a reduction in this trait amounted by 113.33 and 137.5% in the 1 st and 2 nd seasons respectively. Belong to varietal difference in respect to egg masses, the collected results showed sugar beet variety Glorise recorded the lowest value of this trait in both seasons. This finding may be assured the gen make up role in its influence on varieties with respect to their resistance against nematode infection. The most effect interaction was that between sugar beet varieties and each of sulphar treatment and nematicide. Sugar beet root fresh weight, root diameter and sugar yield/fed increased significantly at the studied rates of nematicide and sulphur in the 1 st and 2 nd seasons. Root yield had the same trend in the 2 nd season only. Sucrose% and sugar extractable% significantly increased at the rates of nematicide and sulphur treatments in both seasons, respectively. Glorise variety cleared the significant superiority over all the other tested ones in sucrose%, without significant variance with lilly variety. The interaction between the used rates of sulphur and carbofuran nematicide had the same effect on root diameter in both seasons. Sulphur treatment at developed root quality and reduced the impurity of juice of sugar beet and increased root growth as well as carbofuran nematicide did. Alpha amino nitrogen in sugar beet roots was significantly influenced by sulphur and carbofuran nematicide interaction in both seasons. Potassium, sucrose and extractable sugar percentages and percentage extractability of root juice were significantly recorded impacts by the interaction between varieties and sulphur levels in both seasons.