Реакция хвойных растений на пестицидную токсичность в зависимости от видовой принадлежности

The use of pesticides in the protection of cultivated plants results in the persistence of some residual amounts and metabolites of those chemicals in the soil. The soil acquires "selective fertility", i.e. some plants can grow on the soil containing pesticide, but other plants cannot. The physical and chemical methods of pesticides detection in soil are complicated, and their response is not always sufficient to detect pesticide residues. Bioindication is a simple and highly efficient method that takes into account the total toxicity of pesticide residues and their metabolites. Yet it is important to properly choose a bio-test plant. The research purpose is to reveal by bioindication the response of pine and spruce to soil Roundup contamination compared to the response of radish. The research objective included a comparative study of the biometric parameters of the seedlings depending on the pesticide amount in a laboratory experiment. The experiments showed that each of the studied species revealed its own response to the toxicity of Roundup. Radish responded by root size decrease to Roundup amount of 0.5 l/ha, pine 1 l/ha, and spruce 3 l/ha. The toxic effect of roundup on hypocotyl growth was not observed at that phase of plant development in all the species. The data on different specific response of the plants to pesticides may be used in pesticide application management in forestry.