scholarly journals Long-term effect of crop residues incorporation on yield and soil physical properties under rice - wheat cropping system in calcareous soil

2018 ◽  
pp. 0-0 ◽  
Author(s):  
Kamini Kumari ◽  
Janardhan. Prasad ◽  
Ishwar Singh Solanki ◽  
Ravish Chaudhary
Keyword(s):  
Physical Properties ◽  
Calcareous Soil ◽  
Crop Residues ◽  
Cropping System ◽  
Soil Physical Properties ◽  
Term Effect ◽  
Long Term Effect

Long-term effect of biochar on soil physical properties of agricultural soils with different textures

2021 ◽  
Author(s):  
Martin Zanutel ◽  
Sarah Garré ◽  
Charles Bielders
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Water Retention ◽  
Particle Density ◽  
Sandy Loam ◽  
Soil Physical Properties ◽  
Term Effect ◽  
Silt Loam ◽  
Long Term Effect

<p>In the context of global soil degradation, biochar is being promoted as a potential solution to improve soil quality, besides its carbon sequestration potential. Burying biochar in soils is known to effect soil physical quality in the short-term (<5 years), and the intensity of these effects depends on soil texture. However, the long-term effects of biochar remain largely unknown yet and are important to quantify given biochar’s persistency in soils. The objective of this study was therefore to assess the long-term effect of biochar on soil physical properties as a function of soil texture and biochar concentration.  For this purpose, soil physical properties (particle density, bulk density, porosity, water retention and hydraulic conductivity curves) were measured in the topsoil of three fields with former kiln sites containing charcoal more than 150 years old in Wallonia (southern Belgium).  The fields had a silt loam, loam and sandy loam texture.  Samples were collected along 3 transects in each field, from the center of the kiln sites outwards. </p><p>Particle density and bulk density slightly decreased as a function of charcoal content. Because particle density and bulk density were affected to a similar extent by charcoal content, total porosity was not affected by the presence of century-old charcoal. Regarding the soil water retention curve, charcoal affected mostly water content in the mesopore range. This effect was strongest for the sandy loam. On the other hand, the presence of century-old charcoal increased significantly the hydraulic conductivity at pF between 1.5 and 2 for the silt loam, while no effect of charcoal was observed for the loamy soil.  The study highlights a limited effect of century-old charcoal on the pore size distribution (at constant porosity) and on the resulting soil physical properties for the range of soils and charcoal concentrations investigated here.  Further research may be needed to confirm the observed trends over a wider range of soil types. </p>

Long-term Effect of a Single Application of Organic Refuse on Carbon Sequestration and Soil Physical Properties

2008 ◽  
Vol 37 (6) ◽  
pp. 2093-2099 ◽  
Author(s):  
J. Albaladejo ◽  
J. Lopez ◽  
C. Boix-Fayos ◽  
G.G. Barbera ◽  
M. Martinez-Mena
Keyword(s):  
Carbon Sequestration ◽  
Physical Properties ◽  
Soil Physical Properties ◽  
Term Effect ◽  
Single Application ◽  
Long Term Effect

scholarly journals Short and long-term effects of tillage systems and nutrient sources on soil physical properties of a Southern Brazilian Hapludox

2008 ◽  
Vol 32 (4) ◽  
pp. 1437-1446 ◽  
Author(s):  
Milton da Veiga ◽  
Dalvan José Reinert ◽  
José Miguel Reichert ◽  
Douglas Rodrigo Kaiser
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Crop Residues ◽  
Total Porosity ◽  
Soil Physical Properties ◽  
Soil Tillage ◽  
Tillage Systems ◽  
Nutrient Sources ◽  
Over Time

Soil tillage promotes changes in soil structure. The magnitude of the changes varies with the nature of the soil, tillage system and soil water content and decreases over time after tillage. The objective of this study was to evaluate short-term (one year period) and long-term (nine year period) effects of soil tillage and nutrient sources on some physical properties of a very clayey Hapludox. Five tillage systems were evaluated: no-till (NT), chisel plow + one secondary disking (CP), primary + two (secondary) diskings (CT), CT with burning of crop residues (CTb), and CT with removal of crop residues from the field (CTr), in combination with five nutrient sources: control without nutrient application (C); mineral fertilizers, according to technical recommendations for each crop (MF); 5 Mg ha-1 yr-1 of poultry litter (wetmatter) (PL); 60 m³ ha-1 yr-1 of cattle slurry (CS) and; 40 m³ ha-1 yr-1 of swine slurry (SS). Bulk density (BD), total porosity (TP), and parameters related to the water retention curve (macroporosity, mesoporosity and microporosity) were determined after nine years and at five sampling dates during the tenth year of the experiment. Soil physical properties were tillage and time-dependent. Tilled treatments increased total porosity and macroporosity, and reduced bulk density in the surface layer (0.00-0.05 m), but this effect decreased over time after tillage operations due to natural soil reconsolidation, since no external stress was applied in this period. Changes in pore size distribution were more pronounced in larger and medium pore diameter classes. The bulk density was greatest in intermediate layers in all tillage treatments (0.05-0.10 and 0.12-0.17 m) and decreased down to the deepest layer (0.27-0.32 m), indicating a more compacted layer around 0.05-0.20 m. Nutrient sources did not significantly affect soil physical and hydraulic properties studied.

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