Sod-podzolic Soil Research Articles

Changes in flax yield and quality in response to various mineral nutrition.

The researchers of Russian State Agrarian University, Moscow Timiryazev Agricultural Academy in 2013-2016 conducted a long-term stationary experiment to study chemical and toxicological properties of fiber flax, Voskhod variety, growing on sod-podzolic soil in the soil and climate of the Moscow region. Test plots were selected with following crop rotation options: without fertilizers, without liming; without fertilizers, with liming; N100P150K120 (kg a.i./ha), without liming; N100P150K120, with liming; N100P150K120 + manure 20 t/ha, without liming; N100P150K120 + manure 20 t/ha, with liming. The agro-climatic conditions of the growing seasons during the research years did not have a negative impact on the growth and development of fiber flax, the hydro-thermal index was 1.1 in 2013, -1.05 in 2014, 1.5 in 2015, and 1.5 in 2016. The maintained crop rotation and the introduction of a full range of mineral and organic fertilizers has been found to contribute to high yields of flax in terms of fiber (18.5-18.9 hwt/ha) and seeds (7.9-8.3 hwt/ha). The seeds contain 16.9-19.5% protein and 33.5-39.4% lipids. The yield of flaxseed oil from seeds ranged from 19.5-35.7% on average for different variants of the experiment. The peroxide number index was 2.5-1.5 mg-eq O2/kg, the acid number index was 1.1-1.9 mg KOH/g, which corresponds to obtaining high-quality linseed oil in compliance with quality standards for all variants of the experiment.

The effect of the timing of shungite application on the agrochemical properties of sod-podzolic soil and potato yield

The shungite effect on potato growth and yield and on the main agrochemical properties of agro sod-podzolic soil under conditions of small-scale field experiment was studied. Shungite fractions of 0.5 mm and shungite-dolomite mixture in a dosage of 0.5 kg/m2 were used. Meliorants were introduced in two periods – first during the autumn digging of the plots and in the spring immediately before planting. It was found that the uniform pre-sowing application of shungite led to an increase in potato yield by 28-48% and contributed to a decrease in the proportion of rotten tubers. A greater effect is manifested from the application of pure shungite compared with shungite-dolomite, as well as from pre-sowing application compared with autumn one. With pre-sowing application, the effect of meliorants begins to manifest only after 1.5-2 months. In case of autumn application of meliorants, by the beginning of the sowing season, an increase in the pH level is observed when applying a shungite-dolomite mixture or an increase in the carbon content when applying pure shungite.

The impact of fertilization on the productivity of forage crops grown on sod-podzolic soil

The impact of fertilization on the productivity of forage crops grown on sod-podzolic soil

Effect of different lime rates under mineral fertilization on nutrient removal by winter wheat on sod-podzolic soil

Effect of different lime rates under mineral fertilization on nutrient removal by winter wheat on sod-podzolic soil

Agroecological assessment of spatial variability of carbon content in the conditions of disturbed sod-podzolic soils

Soil carbon is one of the main carbon pools of terrestrial ecosystems. The carbon of arable soils is the most labile. In this regard, rapid and accurate methods for determining soil carbon in different forms are of great interest to researchers. Therefore, in this paper we decided to conduct a comparative analysis of the results of organic carbon determination using the Walkley-Black method (colorimetric method), the Dumas dry combustion method (using the CN Vario El Cube analyzer)) and the remote method using the Valeeva approach (Valeeva, Aleksandrova, Koposov, 2016) according to the values of the red channel of the spectrum, on the images obtained using an RGB camera mounted on a DJI Phantom 4 drone. For laboratory analysis, 100 soil samples of the arable horizon were collected at regular grid points, georeferenced using RTK. The correlation between the Dumas dry combustion method and potassium dichromate oxidation was 0.24 (for n = 100, significant p=0.195), allowing comparison at the trend level. The highest correlation (R = 0.39 was observed between the data obtained using the Dumas method and the Valeeva-Alexandrova approach, indicating that it can be used to estimate soil carbon dynamics from RGB images. Correlation analysis showed relationships (R = 0.63) between total carbon and microrelief, which is reflected by the drone-derived digital elevation model.

Formation of grass stands of variegated alfalfa (Medicago varia, M. media) on acidic sod-podzolic soils

The article reports the results of field studies performed at the Field Experimental Station of Russian State Agrarian University – Moscow Timiryazev Agricultural Academy in 2023-2024. The authors studied the effect of the growth regulator Albit, the microbiological fertilizer Sporion and the micronutrient Aquamix on the formation of grass stands of variegated alfalfa (the Agnia and Taisia varieties) and Hungarian sainfoin (the Pavlovsky variety). The study has found that on the acidic sod-podzolic soil with a pHКCl of 4.52, variegated alfalfa (the Agnia and Taisia varieties) inoculated with strains of nodule bacteria Sinorhizobium meliloti, AK 55 and SHM 404B, respectively, formed dense grass stands. On average, over two years, variegated alfalfa of the Agnia variety provided the highest yield when using Sporion in combination with Aquamix – 5.2 t/ha; that of the Taisia variety – in variants of Albit + Aquamix and Sporion + Aquamix– 5.07 and 5.19 t/ha, respectively, which is 20.1%; 18.4, and 21.3% more compared to the control. Hungarian sainfoin has not formed a productive agrophytocenosis on the acidic soil. On average, it was inferior in yield to variegated alfalfa of the Agnia and Taisia varieties by 1.7 and 1.8 times, respectively, in all variants of the experiment.

Yield of yellow-flowered alfalfa (Medicago falcata L.) with the use of the growth regulator Albit, the microbiological fertilizer Sporion and molybdenum microfertilizer

Field studies were conducted at the Field Experimental Station of the Russian State Agricultural Academy named after K.A. Timiryazev (Moscow) in 2022-2024, the effect of the growth regulator Albit, microbiological fertilizer Sporion and molybdenum micronutrient on the formation of herbaceous stands of alfalfa of the sickle variety Nizhegorodskaya, alfalfa of the variable varieties Agnia and Taisia was studied. It was found that on medium-cultivated sod-podzolic soil with a pHKCl of 5,4, sickle-shaped alfalfa and variable alfalfa formed dense and weed-free agrophytocenoses. The density of sickle alfalfa in the 3rd year of life was 804-1051 shoots per 1m2, and variable alfalfa was significantly less - 712-947. There was no thinning of grass stands. The participation of variable alfalfa in the harvest for the third year by mowing was 80,5-99,9%, and sickle alfalfa 81,1-97,9%. Sickle alfalfa of the Nizhegorodskaya variety was characterized by high yields, providing an average of 6,4-6,78 t/ha of dry matter over three years. It increased the yield when using Albit, Sporion and molybdenum by 0,25; 0,37 and 0,38 t/ha, respectively.

Assessment of protective forest plantations on gray forest and sod-podzolic soils of the Predkamye region of the Republic of Tatarstan

Assessment of protective forest plantations on gray forest and sod-podzolic soils of the Predkamye region of the Republic of Tatarstan

FEATURES OF MAIZE GROWING FOR GRAIN IN THE WESTERN FOREST ZONE OF UKRAINE IN THE CONDITIONS OF CURRENT CLIMATE CHANGES

Modern climatic changes, namely significant warming in the northern Forest-Steppe and Polissia zones of Ukraine, provide opportunities for the cultivation of a number of grain and leguminous crops (maize for grain, soybeans, sunflower, and others), previously uncharacteristic of this region. Among the above-mentioned crops, corn has the greatest grain yield potential, therefore it is one of the most common crops in world agriculture. If 10-15 years ago corn was not grown for grain in the Polissia zone, then in recent years its sown areas have grown significantly, and the yield in some years is not inferior to the regions of the Forest Steppe and Steppe, which are traditional for this crop. The results of experimental studies of the station showed that under favorable conditions on the most fertile slopes of the drained sod-podzolic soils of the Western Polissia zone, with intensive technologies, it is possible to obtain more than 10-12 t/ha of corn grain.
 The analysis of hydrothermal indicators shows that with the current indicators of heat supply of the growing season in the zone of Western Polissia on mineral soils, it is possible to achieve not only early-ripening, but even medium-early hybrids of corn with FAO up to 280-300. Drained peat soils, due to their high nitrogen content and sufficient amount of moisture, have sufficient potential for obtaining a high yield of corn grain. However, its indicators over the years of research vary greatly and depend to a large extent on the agro-meteorological conditions of the growing season. It has been established that the main limiting factors for achieving a high yield of corn grain on peat soils are less favorable microclimatic features (less amount of active heat, shorter growing season and frost-free period, etc.) compared to adjacent sod-podzolic soils located nearby on dry land. It has been experimentally established that under conditions of minimum duration without a frost period, only the most early-ripening hybrids of corn with FAO up to 220-240 will have time to form a full-fledged crop of grain on drained peat soils in the Western Polissia zone. By choosing late-ripening hybrids, there is a risk of a significant shortfall in the harvest due to the premature termination of vegetation caused by early autumn frosts. It was established that the highest yield of corn per grain, both on sod-podzolic and peat soils, was provided by the organo-mineral fertilization system, which was based on the application of complete mineral fertilizer at the rate of N90Р90К90 on turf-podzolic soils and N35Р60K120 on peat soils in combination with phosphorus mobilizing drug Rice Pi. The use of the organo-mineral fertilization system (N90Р90К90 + phosphorus mobilizing drug Rice Pi) ensured an increase in the yield of corn on sod-podzolic soils by 30,2 ct/ha compared to the basic fertilization system (N30Р30К30). The use of the organo-mineral fertilization system (N35Р60K120 + phosphorus mobilizing drug Rice Pi) ensured an increase in the yield of corn on peatlands by 56.8 ct/ha compared to the natural background of fertility.

Reaction of barley varieties on the content of polyphenols on stress soil backgrounds

In order to assess the stress resistance of genotypes, we studied the influence of soil stressors on the content of polyphenolic substances in grain, straw, and roots of barley (Hordeum vulgare L.) of various varieties with differentiation by origin (domestic and foreign selection) and methods of production (hybridization and cell selection). The plants were grown in vegetative tanks with sod-podzolic soil in natural conditions until the seeds ripened. The experimental design included the following options: with excess cadmium (Cd2+ 6.4 mg/kg); increased acidity (pHKCl=4.8); simulated drought in the interphase period, emergence into the tube - earing; without stress load at pHKCl=6.5 (control). The content of polyphenols in terms of gallic acid was determined by the spectrophotometric method. The total accumulation of polyphenols in grain under drought conditions (9.18…11.13 mg/g) and in the presence of excess Cd2+ in the soil (9.07…9.10 mg/g) exceeded the control by 2.5…14.8 % and 2.8…8.5 %, respectively. On acidic soil, compared with the control, the amount of polyphenols in grain significantly decreased in all domestically bred barley varieties that underwent selection on acidic soils or selection on acidic selective media in vitro, in Vitrum - by 16.1 %, Rodnik Prikamye - by 11.8 %. In varieties of foreign selection (Zazersky 85, Triumph and Tallon), under acidic conditions, the value of this indicator, on the contrary, increased by 2.2…4.8 %. Most of the polyphenols were in a bound state. The distribution of free fraction polyphenols among organs (% of the total amount in the plant) was revealed: straw (41.4…49.1) > roots (32.4…42.5) > grain (15.6…22.6). Among the stressors studied, increased acidity contributed to a greater extent to the increase in the relative accumulation of free polyphenols and most significantly in the roots - in varieties and regenerants of the selection of the Federal Agrarian Research Center of the North--East by 19.0 %; foreign selection - by 35.7 %.

Ecological testing of spring triticale new varieties in Mari El republic

An important condition for the growth of livestock production is the creation of a stable feed base. One of the promising forage crops is spring triticale. The main advantages of this crop are its high resistance to viral and fungal diseases, ecological plasticity, which allows it to be cultivated in more extreme conditions compared to other crops. Triticale resistance to stresses caused by both weather factors and soil conditions is significantly higher than that of other cereals. It is able to produce stable yields on eroded, sandy, acidic, light soils, where wheat significantly reduces yield. But any crop without the use of fertilizers cannot reveal its potential, especially on poor sod-podzolic soils. The use of mineral fertilizers is the most effective and fast-acting method of increasing the productivity of agricultural crops. The Department of seed production of grain crops in the fields of the Mari Research Institute - branch of the FGBNU FANC of the North-East conducted research to study the effect of levels and timing of mineral fertilizers on grain productivity of zoned and promising varieties of spring triticale. In the course of the study, it was found that the most productive in the conditions of the growing seasons for 2020-2022 with a yield of 3.09 to 4.06 t/ha, depending on the level of mineral fertilizer (factor B), were the varieties Dobroye, Savva and KNIISH 9. Varieties Timur and KNIISH 22 on average by factor B provided a smaller reliable increase in grain to the control grade Rovnya. On average over three years of tests reliably to the standard variety Rovnya highest productivity, with the lowest cost per kg of grain produced with the highest level of profitability, were the varieties Dobroe, Savva, KNIISH 9 at all levels of mineral nutrition and Timur (on background N30P60K60 and N60P60K60 + N30). By recoupment of 1 kg of grain kg of the active substance of fertilizers made the yield stood out varieties Dobroe with indicators on the background of fertilizer N60P60K60 - 5.4 kg, and Timur N30P60K60 - 5.2 kg.

THE INFLUENCE OF PENICILLIUM FUNGI ISOLATED FROM SOYBEAN ROOTS ON THE SYMBIOTIC SYSTEM “GLYCINE MAX – BRADYRHIZOBIUM JAPONICUM” AND CROP PRODUCTIVITY

Objective. Identify new strains of Penicillium endophytic fungi by morphological and cultural properties, study their influence on the symbiotic system “Glycine max – Bradyrhizobium japonicum” and soybean productivity. Methods. Microbiological (cultivation of endophytic fungi, preparation of spore suspensions, determination of spore titre in suspensions, light microscopy), gas chromatographic (determination of nitrogenase activity of soybean nodules), vegetation and field small-plot experiments (study of the effect of endophytic fungi on symbiotic and morphometric parameters of soybean plants and crop yield when growing on sod-podzolic soil), statistical. Results. New strains of Penicillium endophytic fungi are attributed to the species P. funiculosum Thom, P. variabile Sopp, P. glauco-lanosum Chalabuda, and P. steckii Zaleski based on their morphological and cultural characteristics. Under the conditions of the vegetation experiment, the positive influence of the studied strains on the symbiotic parameters of soybeans was shown. A tendency towards an increase in the number of nodules versus the control in all variants, an increase in the mass of nodules in the variants when soybean seeds were treated with spores of P. variabile 20173 and P. funiculosum 20312 by 28.4 % and 36.4 %, respectively, an increase in the nitrogenase activity of nodules by 29.8–38.5 % in variants with the use of P. stekii 2204, P. glauco-lanosum 20401, P. variabile 20173 was registered. The results of the study of soybean symbiotic parameters under the conditions of the field experiment generally confirmed the corresponding data of the vegetation experiment. Inoculation of soybean seeds with spores of Penicillium endophytic fungi contributed to an increase of the morphometric parameters of plants, namely: height — by 4.6–6.2 cm in all variants of the experiment, above-ground mass of dried plants — by 11.1–19.0 % when treated with P. stekii 2204, P. glauco-lanosum 20401, P. variabile 20173, mass of dry roots — by 13.2 % and 18.4 % with P. funiculosum 20312 and P. variabile 20173. The results of the field experiment proved the positive influence of new strains of endophytic fungi on soybean yield: when soybean seeds were inoculated with P. variabile 20173, P. funiculosum 20312 and P. stekii 2204, the increase in grain productivity was on average from 11.8 % to 17.3 %. The weight of 1000 grains increased by 3.8–5.1 % in variants using P. variabile 20173, P. glauco-lanosum 20401, P. stekii 2204. Conclusion. Penicillium endophytic fungi, which belong to the species P. funiculosum, P. variabile, P. glauco-lanosum and P. stekii, were isolated from the tissues of soybean roots. It was found that Penicillium endophytic fungi have a positive influence on the functioning of the symbiotic system “Glycine max – Bradyrhizobium japonicum” and soybean yield.

Paleocryolithopedogenesis and Evolution Sod-Podzolic Soils of the Taiga Zone Northeast of the East European Plain

The results of soil-genetic studies conducted on sod-podzolic soils in the Gryazovetsky district of the Vologda region are presented. The modern soils of the study area are represented by sod-podzolic soils of different variations (Albic Retisols) formed on loamy paleocryogenically transformed soil-forming rocks. The concept of the role of paleocryolithogenic processes that determined the formation and evolution of modern sod-podzolic soils of the north-east of the East European Plain is proposed. The considered set of paleocryolithopedogenic processes in modern zonal sod-podzolic soils allowed us to reconstruct the conditions for the formation of soils located in the periglacial region of the Valdai glaciation. The results obtained have expanded the understanding of the influence of the processes of Late Pleistocene cryogenesis and lithogenesis on the evolution of modern sod-podzolic soils of the northeast of the East European Plain. The obtained data show the processes forming the soils under consideration and for the first time it is proposed to isolate paleocryolithogenic soil combinations in the structure of the soil cover as a result of the combined natural process – paleocryolithopedogenesis.

Acid-Base Buffering Assessment and Directions of Silicon Compound Transformation in Sod-Podzolic Soil when Used Various Siliceous Rocks

The variability of the main indicators of acid-base buffering of sod-podzolic light-loamy soil was investigated, and the dynamics of the content of monomers and polymers of silicic acid and acid-soluble silica compounds in the soil under conditions of reclamation doses of various siliceous rocks (diatomite, zeolite and bentonite clay 3, 6, 12 t/ha) was described. Zeolite rock and bentonite had a positive effect on the anti-acid buffering ability of the soil, shifting the H+/OH–equilibrium of the system by more than 160 and 20, respectively, depending on the applied dose of the material. The effect of diatomite was manifested in the anti-alkaline region of soil buffering, due to which the H+/OH–-equilibrium index decreased by almost 40%. Against the background of the use of diatom rock and bentonite clay, the content of silicic acid monomers in the soil increased by more than 5 and 4 times, respectively, against the background of the use of zeolite – by more than 2 times. The content of silicic acid polymers in the soil increased up to 3 and 4 times with the use of zeolite and bentonite rocks, respectively. At the same time, the introduction of diatomite into the soil contributed to an increase in the content of H4SiO4 polymers by 5–10 times, depending on the dose of the material. The content of the acid-soluble fraction of silicon compounds in the soil increased by 1.4–2.8 times against the background of different doses of the studied rocks and, in general, had a different dependence depending on the composition of each of them. Based on the revealed irregularities in the content and dynamics of mobile silicon compounds in the soil (monomers and polymers of silicic acids, acid-soluble silica fractions), the characteristic is given and the value of the first proposed indicators describing their dynamic state and directions of transformation – the potential for the formation of monomers (M-ASi) and polymers (P–ASi) is disclosed. H4SiO4, the degree of polymerization (Pm-VSi) and depolymerization (Dm-VSi) of silicic acid, the total content of the loose-amorphous silica fraction (Si-AMF) and the degree of amorphousness of the Si-containing mineral phase of the soil (AMF-VSi). The study of the influence of silicon materials in conditions of sod-podzolic soil revealed that, depending on the qualitative composition and dose of silicon rock, the M-ASi index can increase by 30–80%, and the P-ASi index can be in the range of increase from 0.3 to 3.0 or more times. The processes of polymerization of silicic acid and the decomposition of its polymers into monomers, expressed respectively by Pm-VSi and Dm-VSi, can also actively increase against the background of the interaction of soil with rocks, the measure of change of which is expressed in the order of 10–40% deviation relative to the control. The total content of loose-amorphous silica fraction in the soil, expressed by the SiAMF index, can be determined by the composition of each siliceous rock used as a meliorant. If, when using diatomite, the indicator can decrease by almost 30%, then when using zeolite and bentonite clay, it can increase by 30–100%, depending on the dose. Similarly, the indicator of the degree of amorphousness of the silicon-containing part of the soil substance (AMF-VSi) can also change.

Effect of Active Si on Phosphate State in Sod-Podzolic Soils

Samples of the upper horizon of sod-podzolic virgin and arable soil were incubated with lime or superphosphate, then amorphous silicon dioxide was introduced in doses from 50 to 5000 kg/ha and incubated again for 2 weeks. The content of water-soluble and acid-soluble forms of silicon in soils was determined and the fractional composition of phosphorus compounds was analyzed. It is shown that an increase in the concentration of monosilicon acid in the soil solution of sod-podzolic soil initiated the processes of transformation of phosphorus compounds, leading to a decrease in the proportion of insoluble forms of phosphorus and an increase in the phosphorus content available to plants. The introduction of lime or phosphorus fertilizer contributed to the strengthening of these transformational processes, which is important for the development of recommendations for the practical application of silicon fertilizers and the reduction of doses of phosphorus fertilizers.

Reaction of Peas to Nitrogen Fertilizer and Inoculation of Seeds with Rhizotorfin on Sod-Podzolic Soil of Different Degrees of Cultivation

Reaction of Peas to Nitrogen Fertilizer and Inoculation of Seeds with Rhizotorfin on Sod-Podzolic Soil of Different Degrees of Cultivation

Influence of Diatomite, Zeolite and Bentonite Clay on Agrochemical Indicators Sod-Podzolic Soil and Yield Agricultural Crops

In three-year microfield experiments on sod-podzolic light loam soil, the effect of reclamation doses (3, 6 and 12 t/ha) of siliceous rocks (diatomite, zeolite and bentonite clay) on the main agrochemical properties of the soil and crop productivity in the grain link of the crop rotation of winter wheat-spring barley-seed peas was studied. Among other positive effects, a significant effect of diatomite was found in reducing the concentration of exchangeable forms of aluminum in the soil (by 0.11 mg-eq/100 g), increasing the content of exchangeable forms of magnesium (by 0.33 mg-eq/100 g) and phosphates of soil solution (by 225%). Against the background of the influence of diatoms, barley gave the greatest increase in grain yield (by 38%) and straw (by 29%). The most significant effect of zeolite was revealed in a decrease in the actual, metabolic and hydrolytic acidity of the soil (a decrease of 1.11, 0.48 pH units and 0.33 mg-eq/100 g), as well as the concentration of exchange compounds of calcium (an increase of 17.7 mg-eq/100 g), magnesium (by 12.0 mg-eq/100 g) and potassium (by 46%). The introduction of zeolite rock contributed to the greatest increase in the yield of grain (by 32%) and straw (by 23%) of barley. The most significant influence of bentonite clay was established on the indicators of actual soil acidity (their decrease by 0.65 pH units), the content of exchangeable aluminum (decrease by 0.19 mg-eq /100 g) and phosphates of soil solution (increase by 175%). The introduction of clay contributed to the formation of the greatest increase in grain yield (by 33%) and straw (by 19%) of seed peas.

Accumulation of Atmospheric Carbon by Crops in Rotation and the Effect of Fertilization Systems on the Accumulation of Organic Carbon by Cultivated Sod-Podzol Soil

Accumulation of Atmospheric Carbon by Crops in Rotation and the Effect of Fertilization Systems on the Accumulation of Organic Carbon by Cultivated Sod-Podzol Soil

Uptake of plutonium isotopes by green onions in different growing mediums

During the growing experiment, the uptake of plutonium isotopes by green onions (Allium cepa Centurion F1) grown on distilled water, Ellis nutrient solution and sod-podzolic soil was studied. The analysis of plutonium isotopes was carried out by alpha spectrometry with preliminary radiochemical separation. It has been determined that the uptake of 239+240Pu by the green onions decreases in a row: distilled water > Ellis nutrient solution ≫ sod-podzolic soil. The transfer factors of plutonium isotopes in green onions were 1.7 ± 0.4 for distilled water; 0.7 ± 0.2 for Ellis nutrient solution; 0.0054 ± 0.0014 for soddy-podzolic soil.

Effect of Sulfonylureas Residues on the Lupine and Vigna Seedlings Development during Biotesting Research on Sod-Podzolic Soil

In a series of consecutive vegetation experiments on biotesting on samples of sod-podzolic cultivated soil after its treatment with herbicides from the class of sulfonylureas: Magnum, VDG, metsulfuron-methyl 600 g/kg, manufactured by August and Alistair Grand, MD, diflufenican 180 g/l + mesosulfuronmethyl 6.0 g/l, iodosulfuron-methyl-sodium 4.5 g/l + mephenpyrdiethyl 27 g/l (antidote), manufactured by Bayer. The residual phytotoxicity of these preparations for seedlings of sensitive cultures of white lupin (Lupinus albus) and masha (Vigna radiata) was studied. The initial soil samples were taken in the field on the 5th day after herbicides were applied in the field in winter wheat crops using 2 different tillage technologies: traditional on the basis of dump plowing and zero tillage. According to the results of biotesting samples at a temperature of 20°C and humidity at the level of 60% soil moisture capacity, it was shown that the half-life of herbicides (DT50) was reached after 40 ± 3 days of incubation, and detoxification to the level of 70–80% occurred 200–240 days after the introduction of herbicides into the soil. Regardless of the method of tillage and the applied herbicide, 2 years after the application of herbicides, the suppression of test crops at the level of 10% of the control was detected. White lupin and mash are highly sensitive to the effects of micro-quantities of herbicides of the sulfonylurea group, therefore it is recommended to use these test cultures to determine the residual phytotoxicity of the soil. The manifestation of the aftereffect of sulfonylureas on legumes is shown, which is important even in specialized crop rotations designed for zero tillage.