Response Sour Orange , Lemon, Grape and Olive Infected with Citrus Nematode Tylenchulus semipenetrans in Nineveh Governorate.

Abstract

The results of the study related that of the four plants used in the study Sour orange , Lemon, Grape and Olives infected by Citrus nematode and varied in numbers of females , egg mass placed on 1 g of plant roots, male & juveniles in100g.soil and reproduction factor .from plant to another lemon recorded the highest number of female , egg mass,male &juveniles and reproduction factor the number reacheds 14.5 8.3, 100.5 and 54.7 respectively, and thus differed significantly from the rest of the plants while record olive lowest number of female , eggs mass, male & juveniles and reproduction factor the number reached to 3.5 , 2.5,20 and 11.4 respectively was observed a decrease in the length of shoot , root, fresh and dry weight of shoot and root for the treatment of comparison and a higher percentage of the decrease in the mentioned qualities above recorded on limes have varied significantly from the rest of the plants reached each respectively to 23.1% , 15.1% , 8.6% , 6.1%, 4% and 3%.