Lignohumate AM – prospects for use in floriculture and reproduction

South-Ural Botanical Garden-Institute of Ufa Federal Research Center of the Russian Academy of Sciences, Republic of Bashkortostan, Ufa, Russia

^* Corresponding author: cvetok.79@mail.ru

Abstract

Improving agricultural technology and supporting plant reproduction in the collections of botanical gardens remain relevant. Using the example of species and varieties of the genus Iris L., the effectiveness of using the preparation Lignohumate AM was studied. Root watering and foliar treatment of varieties with the preparation stimulated leaf growth. However, the preparation was ineffective for improving the decorativeness of plants. Treatment of plants with Lignohumate had a positive effect on the water regime of irises. Water deficit decreased by 2,8%−5,3% as a result of root treatment, water-holding capacity increased by 5,7% during irrigation and mixed treatment. The preparation had no effect on the germination of seeds of I. sibirica and I. pseudacorus, but was highly effective in long-term experience. Lignohumate contributed to a reduction in the loss of one-year-old I. sibirica plants by 20,8%, as well as the growth of surviving I. pseudacorus plants by 39,7%. The stimulator also showed a significant prolonged growth-stimulating effect, which contributed to improving the quality of seedlings. The length of leaves under the influence of the preparation increased by 64% for I. sibirica and 17% for I. pseudacorus, the width of leaves of I. sibirica increased by 14%. Based on the results of the study, the growth stimulator Lignohumate AM can be considered an effective promising preparation for use in floriculture and the reproduction of decorative, rare species of iris.