METHOD FOR ASSESSMENT OF ALLELOPATHIC SOIL FATIGATION FOR SPECIFIC CROPS

摘要

FIELD: agriculture.;SUBSTANCE: invention relates to agriculture and crop production. Method comprises successively forming at least two samples of seeds of cereal crops: an experimental and control version of samples of seeds of cereal crops, contacting the test sample of seeds with the soil with the addition of water until reaching the lowest moisture capacity of the soil; providing contact of control sample of seeds with sand with addition of water to achieve minimum moisture capacity of sand; method includes holding said test and reference samples of seeds until sprouting, removing soil and sand from sprouted seeds and placing the purified test and control samples of sprouted seeds into identical transparent water containers, sprouted seeds are compacted in containers by means of vibration action in vertical plane and subsequent impact action on tank bottom. At that, after vibrating action on samples of seeds in container identical weight weights are placed, bulk volumes of experimental (V2_i) and control (V3) samples of sprouted seeds by height of cargo location from bottom of capacity, determining inhibition values for each sample (I_i) by formula: I_i= ((V3-V2_i)/(V3-V1)) * 100%, where V1 is the correction factor characterizing the bulk volume of swollen seeds sprouting which was carried out for 24 hours; V2_i - bulk volume of sprouted seeds of prototype; V3 - bulk volume of sprouted seeds of control sample, i is ordinal number of the prototype, determining the minimum I_i, from which a test sample is determined with a minimum inhibition value, which characterizes the degree of allelopathic soil-dressing for specific cereal crops.;EFFECT: method provides higher reliability of obtained results owing to possibility of increasing volume of statistical sampling.;9 cl, 6 dwg, 4 tbl, 6 ex