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Pakistan Journal of Biological Sciences
  Year: 2004 | Volume: 7 | Issue: 2 | Page No.: 253-257
DOI: 10.3923/pjbs.2004.253.257
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Effect of Trichoderma harzianum Strains to Colonize Tomato Roots and Improve Transplant Growth
Nusret Ozbay and Steven E. Newman

An experiment was performed with commercial and noncommercial Trichoderma harzianum strains to test whether they have any effect on the growth of tomato seedlings. The tomato (Lycopersicon esculentum Mill. cv. `Caruso` seedlings were grown in a greenhouse and watered daily by hand. 18-day old seedlings were inoculated with Trichoderma harzianum strains PlantshieldTM, T22 and T95 (107conidia plus mycelial fragments ml-1) and transplanted into plastic pots filled with Pro-MixTM potting mix. Randomized complete block design was used and treatments were replicated three times. At six weeks, the seedlings were sampled for growth comparisons on seedling emergence, number of true leaves, fresh and dry weights of roots and shoots, stem caliper and shoot height. The data were subjected to ANOVA and the means tested by LSD. The results demonstrated that Trichoderma harzianum strains improved tomato seedling growth. There were differences between the untreated control and the treatments for all of the growth parameters at 4 weeks after inoculation with the exception of root fresh and dry weight.
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How to cite this article:

Nusret Ozbay and Steven E. Newman , 2004. Effect of Trichoderma harzianum Strains to Colonize Tomato Roots and Improve Transplant Growth. Pakistan Journal of Biological Sciences, 7: 253-257.

DOI: 10.3923/pjbs.2004.253.257








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