Usability of Jerusalem artichoke tuber waste in lettuce (Lactuca sativa var. longifolia) seedling production

The growing medium, which is crucial for seedling production, directly affects germination and the subsequent root system. This medium not only provides support to the plant, but also acts as a source for water and nutrients. It also allows diffusion in the roots and provides gas exchange between the root and the atmosphere outside the root. In this study, the usability of Jerusalem artichoke tuber residues in lettuce seedling cultivation was investigated under greenhouse conditions.For this purpose, was added main media (peat, perlite, peat 50%+perlite 50%) and different proportions Jerusalem artichoke residues of 32, 48, and 96 grams. At the end of the experiment, the number of leaves, plant weight, plant height, leaf length, leaf width, leaf surface area, root length and root weight values were measured. A statistically significant effect of media types was determined in all measured parameters. A statistically significant effect of medium types was determined in all measured parameters. In general, it has been observed that the 32 g L-1 Jerusalem artichoke residue additives made to the peat cause an increase in many values. The most prominent issue in increases is that the effect on the values from the weight unit is higher than the ones in the length unit. This result shows that Jerusalem artichoke residues lead to stronger tissues in lettuce seedlings.