The effect of mycorrhizal inoculum on the leaf greenness index and yield of tomato (Lycopersicon esculentum Mill.) plants grown in a heated plastic tunnel
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| Authors: | Joanna Majkowska-Gadomska1, Artur Dobrowolski1, Emilia Mikulewicz1 1Department of Horticulture, University of Warmia and Mazury in Olsztyn ul. Prawocheńskiego 21, 10-975 Olsztyn |
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| Abstract : | In an experiment conducted in 2012-2013, tomatoes were grown in coco coir inoculated with mycorrhizal fungi, in a heated plastic tunnel in the garden of the Research and Experimental Station of the University of Warmia and Mazury in Olsztyn. The experimental materials comprised seedlings of three tomato cultivars, ‘Torero F1’, ‘Growdena F1’ and ‘Listell F1’, supplied by a horticultural farm. The second experimental factor was inoculation of the plant growth medium with endomycorrhizal fungi from the genus Glomus. The aim of this study was to determine the chlorophyll content of leaves of three tomato cultivars grown in coco coir inoculated with mycorrhizal fungi. Each treatment consisted of seven coco coir mats (100 x 20 x 7.5 cm) with four tomato plants grown in each mat, pruned to produce 23 clusters. The experiment was carried out in triplicate. Seedlings, planted in rockwool cubes, were initially placed next to the openings made in the coir mats. Immediately before planting, each seedling was supplied with 10 ml of a standard working solution containing mycorrhizal fungi. The mycorrhizal inoculum was applied directly to the coco coir. Mycorrhizal fungi were not used in the control treatment. The results showed that, in most treatments, SPAD readings recorded in the fall were lower than in the summer, and the noted values were similar to those determined at the beginning of the growing season. The mycorrhizal inoculum improved the nutritional status of tomato plants determined based on the leaf greenness index. The mycorrhizal inoculum increased the yields of all analysed tomato cultivars. |
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| Keywords : | chlorophyll content, coco coir, fertigation, heated tunnel, tomato leaves, mycorrhiza | ||||||||
| Language : | english | ||||||||