Evaluation the Growth Changes in Two Lettuce (Lacttuca sativa) Cultivars at Different Concentrations of Trichoderma harzianum

Volume 5 - Issue 4

Shahab Ahooi¹, Ladan Ajdanian¹, Hossein Nemati¹, Hossein Aroiee¹*, Mehdi Babaei²

Received: July 28, 2020;   Published: August 18, 2020

DOI: 10.32474/OAJESS.2020.05.000219

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Abstract

In recent years, the world’s growing population and growing demand for food on the one hand, and the importance of environmental issues and sustainable agriculture on the other, have led researchers to use biomass to increase agricultural productivity per unit area. Therefore, the effect of TBI extracts from Trichoderma harzianum fungal species in increasing lettuce growth in greenhouse conditions and in the soilless cultivation system in the form of a completely randomized design with invoice arrangement was performed in 6 replications. To perform this study, 4 concentrations of 0, 5, 10, and 15% of the extract were used for each source, as well as 2 cultivars of Siaho and Gridelik. The results showed that different levels of the extract of this fungus had different effects on the growth characteristics of lettuce. Among the various levels used, the concentration level was 5% with an increase of 26.1% in a fresh weight of aerial shoot, 13.2% of the dry weight of aerial shoot, 22.29% of w fresh et root weight, 16.66% of dry root weight, 5.5 49% leaf number, 31.36% fresh leaf weight, 17.98% dry leaf weight, 20.91% leaf area, 15.78% lettuce stem diameter had the highest growth effects. Gridelik was superior in all growth factors to Siaho. Research shows that the type of plant and the type and amount of secondary metabolites secreted by different nodes and species of Trichoderma can affect the rate of their growth effects in plant interaction with Trichoderma.

Keywords: Concentration; Fungus; Soilless cultivation; Trichoderma harzianum

Abstract| Introduction| Materials and Method| Results| Discussion| Conclusion| Acknowledgement| Declaration of interest| Highlights| References|