Changes in the fertility of a leached chernozem under different primary tillage technologies

Korolev, V. A.; Gromovik, A. I.; Borontov, O. K.

doi:10.1134/s1064229316010099

Cited by 4 publications

(3 citation statements)

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“…However, at some distance from the place of application of force [9,12], according to the principle of locality, formula (6) can be suitable for practical calculations. Moreover, the shear of the soil layer occurs at a distance l' from the share lip at θ = 0 [6]. Therefore, it is advisable to refer the limiting values to this area and consider the resistance ܴ depending on the stress ߪ arising in at maximum stresses at the shear moment, i.e.…”

Section: Resultsmentioning

confidence: 99%

“…A lighter tractor (drawbar category 1.4) firms the soil less in first plowing than a large one. The highest yield (30.6 t/ha) of herbage (oats, peas, sunflower) has been obtained in a field tilled by a DT-75M tractor, after first plowing to a depth of 14 ... 16 cm by a MTF-50 tractor aggregate [6,11,14]. The proposed method of tilling the topsoil as one of the measures to prevent the subsoil prerconsolidation ensures the improvement or preservation in them the favorable physical conditions for plants, avoiding the extent of mechanical deformations to depth due to the damping property of loose soil against the ground, drive system pressureoftractors and agricultural machines.…”

Section: ߪ = ߪ mentioning

confidence: 99%

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The study of reducing soil mechanical deformation in tilling

2021

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Due to the use of heavy machines, mechanical deformation with the inevitable deterioration in its physico-biological properties is undergoing in agriculture of heavy machines and subfall layers of the soil. The density of the arable and subframe horizons increases, decreases, due to the moisture in the soil. The productivity of cultural plants is influenced by effective fertility not only arable layer, but also subfectant, so it is necessary to take into account the effects on them of agricultural machinery and tractors. At the first stage, the soil particles in close proximity to the paw are shifted forward, forcing the lying layers in front to shrink, when the voltages in the soil reaches the limit values, at some distance from the sock of the paw blades, its shift occurs. At the second stage, the soil begins to intensively shifted forward and move along the surface of the worker. In this regard, the soil resistance to the movement of individual parts of the working body will be different. At the moment when there is an intensive compression of the soil and its shift, the most loaded elements will be the cutting edge and the nose part of the paw, the least - wings of the paws and racks.

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Section: Resultsmentioning

confidence: 99%

Section: ߪ = ߪ mentioning

confidence: 99%

The study of reducing soil mechanical deformation in tilling

2021

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“…Subject of research is leached chernozem, rich, of medium thickness, middle loamy, on carbonate loessial loam with the attributes and properties typical for Western Siberia [12]. By its granulometric composition it is of a clay-silt middle loamy type, formed on a middle loamy covering silt.…”

Section: Methodsmentioning

confidence: 99%

Changing Soil Fertility in Chernozems of Western Siberia as a Result of Prolonged Plowing

Eremina¹,

Selyukova²,

Selyukiva³

2018

International Scientific and Practical Conference "AgroSMART - Smart Solutions for Agriculture" (AgroSMART 2018)

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Agriculture in Western Siberia is a dynamically developing sector that has its firm foundation in results of agricultural research. Plowing-up of high-fertility soils led to changes in the direction of soil formation. It reflected in their quality and productivity. Vastly increased anthropogenic burden had negative impact on humus formation and acid-base characteristic of the croplands. To prevent deterioration of quality and develop measures for its reclamation, a complex of multi-year research is necessary. Its goal is monitoring the dynamics of humus state, acidity and composition of arable chernozem cations in Western Siberia. The research was conducted in the Northern Trans-Ural State Agricultural University, at a station located in Tobol-Ishim interstream area of the eastern periphery of the Trans-Uralian Plateau. The multiyear research led to establishing that plowing of leached chernozems leads to increased humus mineralization that has a negative impact on the state of the humus. In 40 years, the loss of soil organics in the 0-20 cm layer amounted to 54 t/ha, of which 9 tonnes migrated deeper into the soil profile. Increased biogenic depletion and leak of calcium and magnesium facilitated acidification of the arable black soil: during the years of the studies, exchangeable acidity increased from 5.5 to 5.0 units, hydrolytic acidity increased from 3.7 to 4.6 mmol/kg. Anthropogenic changes in fertility of arable black soil are seen throughout the humus layer.

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