scholarly journals Biological activity of sod - podzolic sandsand soil with meloriative application of hydrogels

2021 ◽  
Vol 104 (2) ◽  
pp. 97-104
Author(s):  
T. N. Danilova ◽  
Y. V. Khomyakov ◽  
P. Yu. Kononchuk*
Keyword(s):  
Biological Activity ◽  
Sandy Loam ◽  
Soil Layer ◽  
Sandy Loam Soil ◽  
Soil Drought ◽  
Leningrad Region ◽  
Microbiological Activity ◽  
High Biological Activity ◽  
Loam Soil ◽  
Favorable Conditions

Biological activity of the soil is an indicator characterizing the number of organisms living in the soil, and quantitatively evaluating the results of their vital activity. High biological activity is a factor in increasing soil fertility and its phytosanitary state, achieved by creating optimal living conditions for soil microorganisms: providing nutrients, especially organic matter, moisture, heat and soil aeration. In this paper, we assess the effect of hydrogels of different chemical bases on the microbiological activity of sod-podzolic sandy loam soil. The effect of hydrogels on the microbiological activity of sod-podzolic soil was studied in a microfield experiment in a special installation (“dry place”) under conditions of soil drought and field conditions (Menkovsky branch of the FSBIU API, Gatchinsky district, Leningrad region). The experience was laid with two types of hydrogels (potassium and sodium base) with a single dose (40 g/m2). In the experiment, the indicators of soil biological activity were compared in the following variants: soil - control with the addition of 90 kg ha-1 NPK in the form of an azofoska, hydrogel introduced to a depth of 10–12 cm + N90 P90 K90, hydrogel introduced to a depth of 20–22 cm + N90P90K90. Samples of sod-podzolic sandy loam soil were taken from depths (10–12 cm and 20–22 cm) at the beginning and at the end of the growing season. In the course of the studies, it was found that when the hydrogel is introduced, both in the upper root-inhabited soil layer and in the 20–22 cm layer, favorable conditions are created for the microbiological activity of sod-podzolic sandy loam soil. It has been established that the chemical basis of the hydrogel does not inhibit the activity of the microbial community.

INFLUENCE OF UNCONVENTIONAL FERTILIZERS ON MICROBIOLOGICAL ACTIVITY OF SODDY-PODZOLY SANDY SOIL

2020 ◽  
Vol 18 (4) ◽  
pp. 84-87
Author(s):  
Yu.V. Leonova ◽  
◽  
T.A. Spasskaya ◽  
Keyword(s):  
Sewage Sludge ◽  
Sandy Soil ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Microbiological Activity ◽  
Coffee Waste ◽  
Loam Soil

The change in the microbiological activity of sod-podzolic sandy loam soil when using coffee waste and sewage sludge as a fertilizer for oats in comparison with traditional fertilizers is considered. During the study, it was determined that the predominant groups were bacteria and actinomycetes. Bacilli and fungi are few in number. The introduction of sewage sludge and coffee waste into the sod-podzolic sandy loam soil at a dose of 10 t / ha increases the activity of the microflora of the sod-podzolic sandy loam soil, which increases the effective and potential fertility.

SEQUESTERING OF ORGANIC MATTER IN SODDY PODZOLIC SANDY LOAM SOIL

1970 ◽  
pp. 24-27
Author(s):  
L. V. Boytsova ◽  
S. V. Neprimerova
Keyword(s):  
Organic Matter ◽  
Sandy Loam ◽  
Mineralogical Composition ◽  
Perennial Grasses ◽  
Sandy Loam Soil ◽  
Organic Fertilizers ◽  
Mineral Fertilizers ◽  
Leningrad Region ◽  
Soil P ◽  
Loam Soil

The effect of applying mineral and organic fertilizers on the sequestration of organic matter in sod-podzolic sandy loam soil and on its mineralogical composition was studied. Soil samples for research were selected at the plots of the long field experience "agrophysical station", laid down in MOS FBGNU AFI (Gatchinsky district, Leningrad region, Russia) in 2006, in the system of crop rotation: annual grasses - potatoes - barley + perennial grasses - perennial grasses 1st year of use - perennial grasses 2 nd year of use. The soil of the experiment is soddy-podzolic sandy loamy of two kinds of cultivation: medium (MC) - organic fertilizers were not applied and high (HC) - 520 t / ha of manure was introduced over three years. Doses of mineral fertilizers were calculated for a given productivity of photosynthesis, in each kind of cultivation, three variants: 1 - control - no fertilizers (efficiency of the PAR 1-2%); 2 - NPK1 (the efficiency of the PAR is 2-3%); 3 - NPK2 (the efficiency of the PAR is 3 - 4%). Sampling was carried out in the sowing of perennial grasses of the second year of use. The analysis showed that the highest number of Corg and Cclay is characteristic for the variant of the HC soil (p <0,0001) and is 23,78 - 27,57 g / kg and 74,14 - 76,96 g / kg, respectively. The content of Corg in the MC soil is 17,29 - 18,43 g / kg of soil, the Cclay of 56,1 is 61,15 g / kg of the fraction. A positive relationship between the content of the Сclay and minerals for the MC of the soil was fixed with respect to quartz (r = 0,96), dioctahedral and trioctahedral micas (r = 0,73-0,77). In the HC variant, such a relationship was found for feldspars (r = 0,87-0,99).

THE RESULTS OF THE STUDY OF THE AFTEREFFECT OF THE USE OF BIOMELIORANTS TO INCREASE THE PRODUCTIVITY AND BIOLOGICAL ACTIVITY OF DEGRADED SOD - PODZOLIC SOIL

2021 ◽  
pp. 4-8
Author(s):  
A. Ilinskiy
Keyword(s):  
Biological Activity ◽  
Sewage Sludge ◽  
Podzolic Soil ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
First Year ◽  
Agricultural Lands ◽  
Annual Grasses ◽  
Loam Soil ◽  
Positive Effect

The paper evaluates the effectiveness of the aftereffect of the use of biomeliorants (effluent and biocompost) to increase the productivity of soils in degraded reclaimed lands, carried out under the conditions of a lysimetric experiment on a stationary site, when growing annual grasses (vetch-oat mixture). It was experimentally established that effluent and biocompost based on sewage sludge and manure had a positive effect (in the first year of aftereffect) on the productivity and biological activity of soddy-podzolic sandy loam soil of fallow reclaimed agricultural lands.

Emissions of nitrous oxide and nitric oxide associated with the decomposition of arable crop residues on a sandy loam soil in Eastern England

Agronomie ◽  
2002 ◽  
Vol 22 (7-8) ◽  
pp. 731-738 ◽  
Author(s):  
Roland Harrison ◽  
Sharon Ellis ◽  
Roy Cross ◽  
James Harrison Hodgson
Keyword(s):  
Nitric Oxide ◽  
Nitrous Oxide ◽  
Crop Residues ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Arable Crop ◽  
Loam Soil

Chloride and Lithium Transport in Large Arrays of Undisturbed Silt Loam and Sandy Loam Soil Columns

2004 ◽  
Vol 3 (1) ◽  
pp. 316
Author(s):  
M. Saleem Akhtar ◽  
Tammo S. Steenhuis ◽  
Brian K. Richards ◽  
Murray B. McBride
Keyword(s):  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Silt Loam ◽  
Soil Columns ◽  
Lithium Transport ◽  
Loam Soil

scholarly journals A Modified Pressure–Sinkage Model for Studying the Effect of a Hard Layer in Sandy Loam Soil

2021 ◽  
Vol 11 (12) ◽  
pp. 5499
Author(s):  
Nihal D. Salman ◽  
György Pillinger ◽  
Muammel M. Hanon ◽  
Péter Kiss
Keyword(s):  
Bearing Capacity ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
High Fidelity ◽  
Load Bearing Capacity ◽  
Soil Thickness ◽  
Load Bearing ◽  
Hard Layer ◽  
Loam Soil ◽  
New Perspective

The applicability of the typical pressure–sinkage models used to characterize the soil’s bearing properties is limited to homogeneous soils (infinite thickness) that have no hard layer. At a given depth, a hard layer can have a considerable impact on the soil’s load-bearing capacity. It is thus necessary to alter the pressure–sinkage equation by taking this condition into account when assessing the load-bearing capacity. The present paper aims to determine a simple, high-fidelity model, in terms of soil characterization, that can account for the hard layer affection. To assess hard layer affection in this paper, a plate sinkage test (bevameter) was conducted on sandy loam soil. To this end, the soil was prepared by considering three bulk densities and two soil thickness levels at 7–9% moisture content levels. According to the results, this paper put forth a new perspective and related equations for characterizing bearing performance. The sinkage modulus (k) is an intrinsic soil parameter that has a determined unit of N/cm2 and is significant for managing the bearing performance. The results showed that the new modulus sinkage model incorporates the main factor of the rigid layer effect involving high fidelity that the conventional models have failed to account for.

Yields of Sub-humid Rainfed Crops in Relation to Soil Water Retention and Cropping Sequence

1978 ◽  
Vol 14 (3) ◽  
pp. 253-259 ◽  
Author(s):  
H. N. Verma ◽  
S. S. Prihar ◽  
Ranjodh Singh ◽  
Nathu Singh
Keyword(s):  
Water Retention ◽  
Field Experiments ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Yield Response ◽  
Soil Water Retention ◽  
Cropping Sequence ◽  
Loam Soil ◽  
Rabi Crops ◽  
Water Holding

SUMMARYField experiments were conducted for 4 years to study the yield of ‘kharif’ and ‘rabi’ crops grown in sequence on two soils differing in water-holding capacity. The results indicated that drought caused greater reduction in yield of rainy-season crops on loamy sand than on sandy loam soil. In low retentivity soil it was more profitable to raise a single crop of wheat on soil-stored water. In sandy loam soil of higher retentivity, two crops a year gave much higher yields than a single crop. Of the sequences tried, maize followed by wheat gave the highest and most stable yields. For ‘rabi’ crops, stored water showed a better yield response than an equivalent amount of rain during the growing season.

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