The field experiment was carried out in the fields of a farmer in Kirkuk governorate / Hawija district N 43º36´17.73"E"05.56´ 35º16, and the study included the planting of the crop rotation crops (mung beans, sunflower and sesame and without planting) in the summer For the year 2020, and in the winter season, the wheat crop, Sham 6 variety, was planted in the experimental units planted with the crops of the agricultural rotation, as well as fallow land that was not planted with any previous crop. The wheat crop was treated with inducting factors (atonic, salicylic acid, hydrogen peroxide and organic copper) by two sprays, the first at the branching stage and the second at the end of the elongation stage, for each of the inducting factors, the randomized complete block design was used in the arrangement of the split plot RCBD in split plot), the results of the experiment showed a significant superiority of the induction treatment with organic copper in reducing the infection indicators of wheat plants, as it recorded the percentage of infestation of spikes, the percentage of infected grains and the average weight The gall had the lowest average of 10.92 %, 3.42 %, and 3.91 mg, respectively, and the sunflower treatment showed a significant difference for the characteristics of the percentage of spikes infestation, the percentage of infected grains, and the average weight of the gall. Were 10.39, 4.30%, and 3.83 mg, respectively As for the interaction treatments between inducing factors and the crop rotation, the treatment of (Sunflower + Organic Copper) was superior when it recorded averages of 5.71%, 0.47% and 2.33 mg, respectively.

In this research the new starting material 2-mercapto-5-methoxy-1H-benzimidazole (S1) was synthesized by the condensation reaction of 4-methoxy-o-phenylenediamine and (1mmol) and carbon disulfide (1 mmol) in ethanol (10 mL) under basic condition we used potassium hydroxide as base which produced MBI with high yield and purity. 2-mercapto-6-methoxy-1H-benzimidazole(S1), which on treatment with hydrazinehydrate in ethanol yielded hydrazino-6-methoxy-2-mercapto benzothiazole (S2).Condensation of compound (S2) with 4-(N,N-di Methylbenzaldehyde yielded 4-[(N,N-di Methyl bezylidine) hydrazino)]- 6-methoxy -2-mercaptobenzothiazole (S3).The synthesized compounds were identified according to their physical properties, spectroscopic data (FT-IR, 1H-NMR, and 13C-NMR) The study showed three chemical compounds test S1, S2, and S3 to three concentration (100, 200, 300) mg/L.in inhibiting colony diameter of three phytopathoginc fungi Fusarium oxysporum fsp.watermilon,Macro phomina phasiolina and Rhizoctonia solani these compounds effectiveness of inhibition of S1 and to three concentrations of the high against growth of fungi, with an inhibitory rate of 89.39% While S2 was less effective at inhibition of 33.89%.

The research included synthesis of 2-mercapto benzoxazole  (MBO) (1) ) from the reaction of ortho hydroxyl aniline with carbon disulfide in ethanolic potassium hydroxide. The hydrazine benzoxazole HMBA2 (2) was synthesized from the reaction of compound MBO (1) with hydrazine hydrate in presence of alcohol. Compounds (3(a- e)) were synthesized by condensate on of substituted Benzaldehydes with 2-Hydrazino benzoxazole HMBA2. The Ethyl2-(benzoxazolylthio) acetate EMBA1 (4) obtained from the reaction  of compound MBO (1) with solution of ethyl chloro acetate using KOH alcoholic .Finally the compound hydrazide HMBA(5 (a- e))  was synthesized from the reaction of compound (4) with hydrazine hydrate in presence of alcohol .All these synthesized compounds were characterized on the basis of their 1H-NMR ,IR, The study is Showed biological activity for chemical compounds, at three concentration 100, 200, 300 ppm in toxic potato Dextrose Agar (PDA) medium method against phytopathogenic fungi three species  Fusariumgraminarium, Sclerotiniasclerotium and Rhizoctoniasolani, its isolation on nutritious PDA medium from root plants wheat ,eggplant and cotton continually, diameter measure of fungi growth colony result showed all compound growth inhibition barring MMBA compound non effective inhibition its, appear MBO moral  superiority after bring HMBA2 both induce inhibition amount 49.69 and 34.22% continually. Compound concentration its  average effect result reveal third significant superior on first and second concentration, interference effect concentration and species chemical compound notice higher inhibition amount 100%with third concentration MBO compound all test its fungi .

This study aimed to isolate and diagnose root knot nematodes on the okra plant based on the phenotypic diagnosis according to the perineal pattern and the polymerase chain reaction (PCR) method, and toevaluate the efficiency of olive stock, sesame, garlic extract, and the chemical pesticide Voual 24 SL in controlling the disease. The phenotypic diagnosis based on the perineal pattern showed that the diagnosed nematodes belong to Meliodogyen Incognita. The results of the Molecular diagnosis (PCR) were also confirmed by using the initiator Mel F/R to detect the S rDNA18 gene. The results of the partial diagnosis showed isolateion belonged to the nematode M. Incognita. A new Iraqi isolate was recorded in the global gene bank under number a (MW737418.1). The results of applying the following treatments Voual 24 SL, garlic extract, olive stock and sesame meal showed a reduction in complexity index and improvement in growth characteristics and plant yield. The Voual 24 SL pesticide and garlic extract treatment recorded a reduction in complexity index of 1.49, 1.83 and the highest plant height and plant yield recorded by the garlic extract treatment was 54.66 cm. The highest weight of wet roots was recorded in the treatment of sesame meal, which was 13.45 gm.