Influence of Humic Agents on the Content  of Carbohydrates in Structural  Aggregates and Their Water Resistance

Lykhman, Vladimir; Безуглова, О. С.; Poliyenko, Ye. A.; Dubinina, M. N.; Naimi, Olga; Patrikeyev, Ye. S.

doi:10.31774/2222-1816-2020-1-154-168

Cited by 2 publications

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References 2 publications

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“…The structure of the soil and its properties is largely related to the amount and quality of organic matter-humus [22][23][24][25]. Due to their affinity for soil organic matter, humic fertilizers also have a positive effect on the structure of the soil [26][27][28]. Humic preparations, in contrast to humic fertilizers, are purified concentrates of humic substances.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pesticide and Humic Preparation on the Soil Structure during Pea and Chickpea Cultivation

et al. 2021

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The article presents the results of a 3-year experiment to study the soil structure with the combined use of insecticides and a humic preparation. Crops were peas (Pisum sativum) and chickpeas (Cicer arietinum). The experiment was carried out in 2019–2021 at the experimental fields of the Federal Rostov Agrarian Scientific Center, located in the Rostov region in the south of the European part of Russia (47°21′ N, 39°52′ E). Soil was Calcic Chernozem Loamic. The studies were carried out both without fertilization and with the use of mineral fertilizers (N40P40K40). Sowings of leguminous crops were treated with a mixture of insecticides and a humic preparation in the phase of bean formation. The humic preparation BIO-Don10 was obtained according to the authors’ technology by alkaline extraction from vermicompost—a product of manure processing by compost worms of the Eisenia foetida species. The preparation contains salts of humic acids and fulvic acids in the amount of 1.9 g/L; the concentration in the mixture with the insecticide was 0.002%. An increase in the structure and water resistance coefficients was observed. A decrease in the block fraction and an increase in the total number of agronomically valuable aggregates were substantiated. It was found that in the cultivation of legumes, the application of mineral fertilizers had a negative effect on the structure of the soil, while, when using pesticides, the structure was preserved better by the end of the growing season. The revealed patterns can be associated with the activity of microorganisms participating in the hydrolysis of organic compounds that stabilize soil aggregates.

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Section: Introductionmentioning

confidence: 99%

Effect of Pesticide and Humic Preparation on the Soil Structure during Pea and Chickpea Cultivation

et al. 2021

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“…Therefore, the formation and development of the root system of legumes has a significant effect on the soil agrophysical qualities and its aggregate composition [12]. In water-stable soil aggregates with a low content of total carbon (up to 1%), polysaccharides are found predominantly; therefore, they are primarily involved in structure formation [13].…”

Section: Introductionmentioning

confidence: 99%

Effect of humic preparation and herbicide treatment on chernozem aggregate composition

Lychman¹,

Безуглова²,

Dubinina³

et al. 2021

E3S Web Conf.

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The influence of the humic preparation and pesticides on dynamics of soil carbohydrates and the soil structure of ordinary chernozem during the cultivation of winter wheat and chickpeas was studied. A positive trend in the growth of the structural coefficient was observed in all variants. This dynamic was confirmed statistically when a humic preparation and pesticides were used together: the difference with the control after treatment was 1.54% (2019). A decrease in the number of water-resistant units from 87.4 to 56.6% was observed on the control during the entire field experiment. There was a statistically significant increase of water-resistant aggregates by 1.9-5.4% when pesticides are applied together with a humic preparation. The growth of the aggregate water resistance criterion (API) from 6.0% to 17.2% was observed in the variant with a humic preparation. The dynamics of soil carbohydrates in all variants in 2017-2018 was insignificantly expressed. The sharp increase in the content of carbohydrates in 2019 is probably associated with a change of culture in the crop rotation link from winter wheat to chickpea. The amount of carbohydrate compounds varies from 1.13 in the control to 1.26% in the variant with the combined use of pesticides and a humic preparation.

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Influence of Humic Agents on the Content of Carbohydrates in Structural Aggregates and Their Water Resistance

Cited by 2 publications

References 2 publications

Effect of Pesticide and Humic Preparation on the Soil Structure during Pea and Chickpea Cultivation

Effect of Pesticide and Humic Preparation on the Soil Structure during Pea and Chickpea Cultivation

Effect of humic preparation and herbicide treatment on chernozem aggregate composition

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