INTRODUCTION
Tomato (Solanum lycopersicum L.) and Potato (Solanum tuberosum, L.) are the most economically important vegetable crops in Egypt and the most widely grown vegetables in the world. The disturbance of its production affects severely it's local and export impact, because it is considered a very important consumption crop with high nutritional value and a potential export crop for the Egyptian farmers.
In Egypt about 20% of total area devoted for vegetable production is cultivated with potato. The cultivated area of potato reached 381379 feddan which produce 4,265,178 ton of tubers with an average yield of 11.184 ton/feddan (Anon. 2013).
Bacterial wilt is a serious economic disease cause problem in several countries where potatoes are cultivated over large areas for consumption and/or economical exportation crop like Egypt. Ralstonia solanacearum is the most devastating bacterial pathogens which infect more than 50 botanical families. The bacterium is found worldwide, mainly in tropical and subtropical areas, but also in warm temperate countries and even in some cool temperate regions (Hayward et al., 1998 and Peeters et al., 2013). R. solanacearum race 3 biovar 2 (R3Bv2) is an economically important soil borne plant …show more content…
Any disturbance in the soil microbial community is likely to influence the dehydrogenase activity of the soil and its activity is an indicator for microbial activity of the soil. Thus, soil fungi concentrate in the subsoil and play a major role in organic matter build up by decomposition and degradation of resistant organic component such as cellulose, lignin and chitin. They also participate in the stabilization of soil aggregates due to their filamentous nature and thus may prevent soil erosion (Banda et al.,
Tomato (Solanum lycopersicum L.) and Potato (Solanum tuberosum, L.) are the most economically important vegetable crops in Egypt and the most widely grown vegetables in the world. The disturbance of its production affects severely it's local and export impact, because it is considered a very important consumption crop with high nutritional value and a potential export crop for the Egyptian farmers.
In Egypt about 20% of total area devoted for vegetable production is cultivated with potato. The cultivated area of potato reached 381379 feddan which produce 4,265,178 ton of tubers with an average yield of 11.184 ton/feddan (Anon. 2013).
Bacterial wilt is a serious economic disease cause problem in several countries where potatoes are cultivated over large areas for consumption and/or economical exportation crop like Egypt. Ralstonia solanacearum is the most devastating bacterial pathogens which infect more than 50 botanical families. The bacterium is found worldwide, mainly in tropical and subtropical areas, but also in warm temperate countries and even in some cool temperate regions (Hayward et al., 1998 and Peeters et al., 2013). R. solanacearum race 3 biovar 2 (R3Bv2) is an economically important soil borne plant …show more content…
Any disturbance in the soil microbial community is likely to influence the dehydrogenase activity of the soil and its activity is an indicator for microbial activity of the soil. Thus, soil fungi concentrate in the subsoil and play a major role in organic matter build up by decomposition and degradation of resistant organic component such as cellulose, lignin and chitin. They also participate in the stabilization of soil aggregates due to their filamentous nature and thus may prevent soil erosion (Banda et al.,