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Study the Impact of Carbon and Nitrogen Sources on Some Biological Characteristics of Two Biocontrol Agents : Trichoderma harzianum and Trichoderma viride | ||
| Rafidain Journal of Science | ||
| Articles in Press, Accepted Manuscript, Available Online from 02 August 2025 | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/rjs.2025.159121.1444 | ||
| Author | ||
| Nihal youns mohammed* | ||
| department of biology/ college of science/ university of Mosul | ||
| Abstract | ||
| The results indicate that the use of nitrogn sources and carbon sources significantly affected the growth of T. harzianum and T. viride . Aspartic acid achieved the highest colony area for T. harzianum (60.79 cm²), while the highest colony area was for T. viride with alanine (51.50 cm²) and the lowest with cysteine (28.26 cm²). Arginine also showed a positive effect on the sprouting rate and biomass; the sprouting rate was 8.1 for T. harzianum and 10.2 for T. viride , while the biomass recorded the highest value of (0.230 g) for T. harzianum and (0.207 g) for T. viride . Glucose was the most effective source; T. harzianum colony area was (55.39 cm²), followed by sucrose and fructose, while cellulose was the least effective (13.85 cm²). Carbon sources also enhanced ant pathogenic activity and reduced pH to 5.4 and 5.5 compared to the control groups (6.9 and 6.8). Keywords: Carbon sources; Nitrogen sources; Trichoderma harzianum; Trichoderma viride; Sporulation; Biomass. | ||
| Keywords | ||
| Carbon sources; Nitrogen sources; Trichoderma harzianum; Trichoderma viride; Sporulation | ||
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