Improvement of soil properties using compost for optimum parsley production in sandy soils

A chronosequence of sandy soils was investigated on four terraces near Lake Michigan to assess rates of podzolization and changes in soil properties with age. The terraces ranged in age from 3000 to 10 000 BP. Each surface was systematically sampled to determine the modal profile, which was then described and sampled. Quantities of OC, Fe, and Al in the B horizons of modal soils increased with soil age. Silt content of surface horizons also increased with age, possibly due to eolian input or physical weathering. For weighted profile and B horizon Al and Fe averages and a variety of soil development indices, a single logarithmic model generally gave the highest statistical significance of the three chronofunction models used. All pedons sampled failed to classify as Podzols, but the oldest two met the criteria for the Spodosol order. Thus, more than 4000, but less than 10 000, years are required for the development of a spodic horizon in Michigan. Key words: Soil chronosequence, Podzol development, soil genesis, modal profile

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Potassium Buffering Capacity of Sandy Soils from Thua Thien Hue Province, Central Vietnam, as Related to Soil Properties

Communications in Soil Science and Plant Analysis ◽

10.1080/00103620903325919 ◽

2009 ◽

Vol 40 (21-22) ◽

pp. 3294-3307

Author(s):

Hoang Thai Ninh ◽

Hoang Thi Thai Hoa ◽

Pham Quang Ha ◽

Joseph E. Dufey

Keyword(s):

Soil Properties ◽

Sandy Soils ◽

Buffering Capacity ◽

Central Vietnam ◽

Potassium Buffering

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Preparation, Characterization of Granulated Sulfur Fertilizers and Their Effects on a Sandy Soils

Materials ◽

10.3390/ma15020612 ◽

2022 ◽

Vol 15 (2) ◽

pp. 612

Author(s):

Aneta Lisowska ◽

Barbara Filipek-Mazur ◽

Józef Sołtys ◽

Marcin Niemiec ◽

Olga Gorczyca ◽

...

Keyword(s):

Soil Properties ◽

Humic Acids ◽

Soil Ph ◽

Elemental Sulfur ◽

Sandy Soils ◽

Incubation Experiment ◽

Sulfate Content ◽

Stabilized Soil ◽

Sulfur Fertilizers

There is a potential for using sulfur waste in agriculture. The main objective of this study was to design a granular fertilizer based on waste elemental sulfur. Humic acids and halloysite were used to improve the properties and their influence on soil properties. This is the first report on the use of proposed materials for fertilizer production. The following granular fertilizers were prepared (the percentage share of component weight is given in brackets): fertilizer A (waste sulfur (95%) + halloysite (5%)), fertilizer B (waste sulfur (81%) + halloysite (5%) + humic acids (14%)), fertilizer C (waste sulfur (50%) + halloysite (50%)) and fertilizer D (waste sulfur (46%) + halloysite (46%) + humic acids (8%)). Basic properties of the obtained granulates were determined. Furthermore, the effect of the addition of the prepared fertilizers on soil pH, electrolytic conductivity, and sulfate content was examined in a 90-day incubation experiment. Enrichment with humic acids and the higher amount of halloysite increased the fertilizer properties (especially the share of larger granules and bulk density). In addition, it stabilized soil pH and increased the sulfur content (extracted with 0.01 mol·L−1 CaCl2 and Mehlich 3) in the soil.

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