A field crop experiment was carried out in the season (2017 - 2018) in the Agricultural Experimental Station (AL-Saida region) . college of Agricultural – Kirkuk University to aim varietal and Biological control of nematode . nodes of (Anguing tritici) in genotypes of bread wheat (Triticum aestivum L.) bu Randomized Complete Blak Desigh (RCBD) in split plots with three replicates ، The main plots in cluded Biloyical treatments (with out causing (control)،
Nematoda Causing، Nematoda Causing + Tricoderma treatment and nematoda Causing + Bacillomyceds treatment)، while Sub plots in cluded ten Varieties of bread Wheat (Abu Ghraib 3،
Sabarbeg، Sham 6، Arass، Clack، Semithmol، Rizgari، Allaa، Milan، and Adana 99) The traits as follow were Studied for plant height (cm)، number of the spikes (m -2)، weight of spike grains (g)،
causing stress cvefficient in grain yield and the percentage of 1oosing . The results sumerized as follow: Bread wheat varieties were varried in the experiment with different degrees to sensitivity from causing by nematoda of wheat Anguina tritici ، so variety Saber beg showed complete immunity for these nematodes which effected on growth traits، causing treatment gave traits which not differ significantly on control treatment growth traits and The yield Such as plant height،
number of spike grains، ، number of the spikes، spike weight، weight of 500 grain and total yield reached to (96.86) cm ، (251.0) spike. M -2 ، (40.46) grain.spike-1 ، (1.22) g ، (14.15) g and (3008.8) kg.h-1 respectively، while the control treatment reached to same traits (97.20) cm ، (10.23) cm ،
(252.33) spike. M-2 ، (42.03) grain.spike-1 ، (1.23) g ، (14.63) g ، (3093.4) kg.h-1 respectively، while other varieties showed sensitivity for the disease in all studied traits on the plant in causing traits،
growth and the yield . The crop experiment results showed of biological resistant of Trichoderma harazianum and Paecililomycis lilacinus on wheat nematodanodes of Anguina tritici، which biological resistant T. harazianum supassed inexceding of vegetative growth and the productivity meaaures، and decreased the causing measures، so increased the stimulation of some resistance parameters، The plant height of the varieties reached to (91.39) cm with controlling with the biological resistant Paecililomycis lilacinus reached to (86.16) cm، as The traits: spike length،
number of healthy spike grains، weight of the spike ، weight 500 grain and total grain yield supeassed and reached to (10.77) cm ، (32.70) grain. Spike-2 ، (1.20) g، (12.90)g and (3586.6) kg.h-1 respectively controlled with the treatment with the Paecililomycis lilacinus reached to (10.50)
cm، (29.61) grain.spike-1 ، (1.10) g ، (12.37) g and (3116.8) kg.e-1 respectively . while The number of the nodes in the spike ، weight of 10 nodes، percentage of the caushng reached to (15.04) node. Spike-1 ، (0.0372) g. Wart-1 and controlled with Paecililomycis lilacinus treatment (14.60) nodes.spike-1 ، (0.0376) g.nodes-1 and . The surpassing in the exceeding of growth measures and decreasing in the causing measures caused exceeding in total grain yield (3586.6) kg. h-1 controlled with Paecililomycis lilacinus treatment with reached to (3116.8) kg. h-1. So as results refered that this surpassing by decreasing of causing and exceeding of growth and the productivity measures correlated with heiher of systematic resistance parameters by Peroxidase، Caetinase and Lopez enzymes . the Interaction between varieties and varieties and biological treatments was suaperior in the saber beg variety which treated by Tricoderma in plant height and spike length reached to (107.13 cm) and (10.77 cm) respectively، while the variety Cham 6 which reached by Tricoderma surpassed to in number of the spikes (345.33) m -2 ، while the variety Allaa which treated which Tricoderma surpassed in traits : number of healthy grains (68.83) spike-1 and total grain yield (6590.5) kg. h-1، respectively .