EVALUATION OF PHYTOTOXICITY AND GROWTH-STIMULATING PROPERTIES OF VARIOUS DOSES OF ORGANIC FERTILIZER BASED ON BIRD DROPPINGS IN RELATION TO TEST CROPS

Abstract

The requirements for processing and composting bird droppings are an urgent problem today. Therefore, assessing the phytotoxicity of organic fertilizers using test crops is crucial to verifying the suitability of poultry waste in agriculture. Phytotoxicity and growth-stimulating properties of organic fertilizer were evaluated by biological analysis of seed germination, length of sprouts, and roots. Filtrates in concentrations were obtained 0,1%; 1,0%; 2,5%; 5,0%;7.5%; 10,0% by mixing organic fertilizer based on bird droppings with water. It has been established that the treatment of flax and barley seeds with water filtrates of organic fertilizers has a positive effect on the growth and development of sprouts. High concentrations of filtrates showed good results in the germination of barley seeds. Organic fertilizer filtrates increased the length of the barley root by an average of 20.5% and sprouts - by 15.8%. The treatment of flax seeds with organic fertilizer filtrates had a significant effect on increasing the length of the roots. In the experimental version, the length of the roots increased to an average of 51.3% compared to the control. However, the reaction of oilseed flax sprouts to organic fertilizer filtrates showed low values. It was found that high concentrations of organic fertilizer filtrates from bird droppings have weak phytotoxic properties concerning oilseed flax sprouts. The length of flax sprouts was inhibited by 16% compared to the control.