Studies On Some Biological Methods For Controling Plant Parasitic Nematodes Associated With Certain Vegetable Crops

The plant parasitis nematodes associated with vegetable crops in certain parts of the newly recaimed areas of sharkia governorate. The distribution of plant parasitic under field conditions associated as infuced eith: certain soil types in newly reclaimed sandy soil and clay sois of the old valley of the river nile. Some vegetable crops. Seasonal fluctations throughout. The growing season. The important sources of continual sources of nematode contamination: Propagation stocks. Weeds winter, summer and perennials lrrigation water.