Changes in some soil properties in a Vertic Argiudoll under short-term conservation tillage (original) (raw)
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Tillage systems and their impact on the quality of agricultural soil (Atena Editora), 2023
The objective of the present investigation was to compare the effects of the conservationist and conventional tillage system on the physical and chemical properties of the soil. Two soil samples were taken at different depths from 0 to 5 cm and from 5 to 30 cm. The apparent density (Da), electrical conductivity (EC), pH, cation exchange capacity (CEC), carbonates, organic matter (OM), nitrate (NO3-), available phosphorus and potassium (P and K) and bases were evaluated. interchangeable (Ca2+, Mg2+, K+ y Na+). It was observed that the conservation tillage system neutralizes the pH, regulates the concentration of exchangeable bases and reduces the concentration of carbonates. The evaluations of the aforementioned parameters allow us to conclude that the conservation agriculture system is an alternative to favor soil quality
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Journal of Agricultural Sciences Research (2764-0973)
The objective of the present investigation was to compare the effects of the conservationist and conventional tillage system on the physical and chemical properties of the soil. Two soil samples were taken at different depths from 0 to 5 cm and from 5 to 30 cm. The apparent density (Da), electrical conductivity (EC), pH, cation exchange capacity (CEC), carbonates, organic matter (OM), nitrate (NO3-), available phosphorus and potassium (P and K) and bases were evaluated. interchangeable (Ca 2+ , Mg 2+ , K + y Na +). It was observed that the conservation tillage system neutralizes the pH, regulates the concentration of exchangeable bases and reduces the concentration of carbonates. The evaluations of the aforementioned parameters allow us to conclude that the conservation agriculture system is an alternative to favor soil quality.
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Australian Journal of Crop Science, 2016
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SpringerPlus, 2015
Information on the effect of long-term management on soil nutrients and chemical properties is scanty. We examined the 30-year effect of tillage frequency and cropping sequence combination on dryland soil Olsen-P, K, Ca, Mg, Na, SO4-S, and Zn concentrations, pH, electrical conductivity (EC), and cation exchange capacity (CEC) at the 0-120 cm depth and annualized crop yield in the northern Great Plains, USA. Treatments were no-till continuous spring wheat (Triticum aestivum L.) (NTCW), spring till continuous spring wheat (STCW), fall and spring till continuous spring wheat (FSTCW), fall and spring till spring wheat-barley (Hordeum vulgare L., 1984-1999) followed by spring wheat-pea (Pisum sativum L., 2000-2013) (FSTW-B/P), and spring till spring wheat-fallow (STW-F, traditional system). At 0-7.5 cm, P, K, Zn, Na, and CEC were 23-60% were greater, but pH, buffer pH, and Ca were 6-31% lower in NTCW, STCW, and FSTW-B/P than STW-F. At 7.5-15 cm, K was 23-52% greater, but pH, buffer pH, and Mg were 3-21% lower in NTCW, STCW, FSTCW, FSTW-B/P than STW-F. At 60-120 cm, soil chemical properties varied with treatments. Annualized crop yield was 23-30% lower in STW-F than the other treatments. Continuous N fertilization probably reduced soil pH, Ca, and Mg, but greater crop residue returned to the soil increased P, K, Na, Zn, and CEC in NTCW and STCW compared to STW-F. Reduced tillage with continuous cropping may be adopted for maintaining long-term soil fertility and crop yields compared with the traditional system.
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Plant Soil and Environment
Long-term field experiments are important for explaining tillage and rotation effects on soil fertility and to develop sustainable nutrient management strategies. An experiment was established in 1996 in Raasdorf (Austria) on chernozem with four tillage treatments (mouldboard ploughing (MP); no-till; deep conservation tillage and shallow conservation tillage) and two crop rotations. Soil samples were taken in November 2003 from 10 cm soil layers down to 40 cm to assess the effects on pH, carbonate content (CaCO 3 ), soil organic carbon (SOC), total nitrogen (N t ), potentially mineralizable N (PMN) and plant-available phosphorus (P) and potassium (K). Soil pH and CaCO 3 were not affected by soil tillage. SOC, N t , PMN, P and K increased in the uppermost soil layer with reduced tillage intensity. SOC, N t , P and K were more evenly distributed in MP whereas a generally higher decline downwards the soil profile was observed with lower tillage intensity. Lower tillage intensity resulted in a decrease of P and K in 30-40 cm. Rotation affected pH and K distribution in the soil whereas the other parameters were not affected.
European Journal of Agronomy, 2009
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Soil and Tillage Research, 2004
To evaluate the impact of management practices on the soil environment, it is necessary to quantify the modifications to the soil structure. Soil structure conditions were evaluated by characterizing porosity using a combination of mercury intrusion porosimetry, image analysis and micromorphological observations. Saturated hydraulic conductivity and aggregate stability were also analysed. In soils tilled by alternative tillage systems, like ripper subsoiling, the macroporosity was generally higher and homogeneously distributed through the profile while the conventional tillage systems, like the mouldboard ploughing, showed a significant reduction of porosity both in the surface layer (0-100 mm) and at the lower cultivation depth (400-500 mm). The higher macroporosity in soils under alternative tillage systems was due to a larger number of elongated transmission pores. Also, the microporosity within the aggregates, measured by mercury intrusion porosimetry, increased in the soil tilled by ripper subsoiling and disc harrow (minimum tillage). The resulting soil structure was more open and more homogeneous, thus allowing better water movement, as confirmed by the higher hydraulic conductivity in the soil tilled by ripper subsoiling. Aggregates were less stable in ploughed soils and this resulted in a more pronounced tendency to form surface crust compared with soils under minimum tillage and ripper subsoiling. The application of compost and manure improved the soil porosity and the soil aggregation. A better aggregation indicated that the addition of organic materials plays an important role in preventing soil crust formation. These results confirm that it is possible to adopt alternative tillage systems to prevent soil physical degradation and that the application of organic materials is essential to improve the soil structure quality.