Influence of the composition of the organic substrate in combination with organic fertilizer and plant growth regulator on the rooting of lignified cuttings of ornamental crops in greenhouse conditions
The article contains materials of experience on the study of the effect of organic substrates in combination with a plant growth regulator and organic fertilizer composition of on the rooting of cuttings of ornamental crops. The objects of the study are 2 types of ornamental crops, the work was carried out in closed ground conditions. It was revealed that the use of various combinations of the substrate composition with a growth regulator and organic fertilizer affects the morphometric parameters of cuttings. The rooting of cuttings percentage increases compared to the control: in the Populus nigra f. Pyramidális in the variant “soil in combination with sawdust when soaked in heteroauxin” by 34.7 %, in the Sálix álba in the variant “soil with sunflower husk when soaked in heteroauxin” by 41.2 %. The root system of cuttings develops evenly when rooting in various substrates. The effectiveness of the use of substrates in combination with a hormonal plant growth regulator or organic fertilizer has been proven, which is confirmed by a significant increase in the first-order roots and root length.