scholarly journals Soil quality indices as affected by long‐term burning, irrigation, tillage, and fertility management

2020 ◽  
Author(s):  
Helen C.S. Amorim ◽  
Amanda J. Ashworth ◽  
Kristofor R. Brye ◽  
Brian J. Wienhold ◽  
Mary C. Savin ◽  
...  
Keyword(s):  
Soil Quality ◽  
Quality Indices ◽  
Fertility Management

Soil quality indices for evaluation of long-term land use and soil management practices in semi-arid sub-tropical India

2008 ◽  
Vol 19 (5) ◽  
pp. 516-529 ◽  
Author(s):  
R. E. Masto ◽  
P. K. Chhonkar ◽  
T. J. Purakayastha ◽  
A. K. Patra ◽  
D. Singh
Keyword(s):  
Land Use ◽  
Soil Quality ◽  
Management Practices ◽  
Soil Management ◽  
Quality Indices ◽  
Semi Arid

Evaluation of long-term soil management practices using key indicators and soil quality indices in a semi-arid tropical Alfisol

Soil Research ◽  
2008 ◽  
Vol 46 (4) ◽  
pp. 368 ◽  
Author(s):  
K. L. Sharma ◽  
J. Kusuma Grace ◽  
Uttam Kumar Mandal ◽  
Pravin N. Gajbhiye ◽  
K. Srinivas ◽  
...  
Keyword(s):  
Soil Quality ◽  
Management Practices ◽  
Nutrient Management ◽  
Central Research ◽  
Quality Indices ◽  
Available N ◽  
Nutrient Use ◽  
Key Indicators ◽  
Semi Arid

Alfisol soils of rainfed semi-arid tropics (SAT) are degrading due to several physical, chemical, and biological constraints. Appropriate soil-nutrient management practices may help to check further soil degradation. A long-term experiment comprising tillage and conjunctive nutrient use treatments under a sorghum (Sorghum bicolor (L.) Moench)–mung bean (Vigna radiata (L.) Wilkzec) system was conducted during 1998–05 on SAT Alfisols (Typic Haplustalf) at the Central Research Institute for Dryland Agriculture, Hyderabad. The study evaluated soil and nutrient management treatments for their long-term influence on soil quality using key indicators and soil quality indices (SQI). Of the 21 soil quality parameters considered for study, easily oxidisable N (KMnO4 oxidisable-N), DTPA extractable Zn and Cu, microbial biomass carbon (MBC), mean weight diameter (MWD) of soil aggregates, and hydraulic conductivity (HC) played a major role in influencing the soil quality and were designated as the key indicators of ‘soil quality’ for this system. The SQI obtained by the integration of key indicators varied from 0.66 (unamended control) to 0.83 (4 Mg compost + 20 kg N as urea) under conventional tillage (CT), and from 0.66 (control) to 0.89 (4 Mg compost + 2 Mg gliricidia loppings) under reduced tillage (RT). Tillage did not influence the SQI, whereas the conjunctive nutrient-use treatments had a significant effect. On an average, under both CT and RT, the sole organic treatment improved the soil quality by 31.8% over the control. The conjunctive nutrient-use treatments improved soil quality by 24.2–27.2%, and the sole inorganic treatment by 18.2% over the control. Statistically, the treatments improved soil quality in the following order: 4 Mg compost + 2 Mg gliricidia loppings > 2 Mg Gliricidia loppings + 20 kg N as urea = 4 Mg compost + 20 kg N as urea > 40 kg N as urea. The percentage contribution of the key indicators towards the SQI was: MBC (28.5%), available N (28.6%), DTPA-Zn (25.3%), DTPA-Cu (8.6%), HC (6.1%), and MWD (2.9%). The functions predicting the changes in yield and sustainability yield index with a given change in SQI were also determined.

scholarly journals Soil quality indices based on long‐term conservation cropping systems management

age ◽  
2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Helen C. S. Amorim ◽  
Amanda J. Ashworth ◽  
Brian J. Wienhold ◽  
Mary C. Savin ◽  
Fred L. Allen ◽  
...  
Keyword(s):  
Soil Quality ◽  
Cropping Systems ◽  
Systems Management ◽  
Quality Indices

scholarly journals Soil quality indices following long-term conservation pasture management practices

2020 ◽  
Vol 301 ◽  
pp. 107060 ◽  
Author(s):  
Helen C.S. Amorim ◽  
Amanda J. Ashworth ◽  
Philip A. Moore ◽  
Brian J. Wienhold ◽  
Mary C. Savin ◽  
...  
Keyword(s):  
Soil Quality ◽  
Management Practices ◽  
Quality Indices ◽  
Pasture Management

Effects of Long Term Application of Organic and Mineral Fertilizers on Soil Enzymes

2018 ◽  
Vol 69 (10) ◽  
pp. 2608-1612 ◽  
Author(s):  
Alina Dora Samuel ◽  
Simona Bungau ◽  
Delia Mirela Tit ◽  
Carmen Elena Melinte (Frunzulica) ◽  
Lavinia Purza ◽  
...  
Keyword(s):  
Biological Activity ◽  
Soil Quality ◽  
Soil Enzymes ◽  
Farmyard Manure ◽  
Enzymatic Activities ◽  
Mineral Fertilizers ◽  
Soil Biology ◽  
Soil Biological Activity ◽  
Organic And Mineral Fertilizers

Long term productivity and conservation of soils is critical for sustaining agricultural ecosystems. The specific objective of the work reported was to determine the effects of long term application of organic and mineral fertilizers on soil enzyme activity as an index of soil biology and biochemistry. Three key soil enzymes involved in intracellular metabolism of microorganisms and two soil enzymes involved in phosphorus metabolism were selected. Actual and potential dehydrogenase, catalase, acid and alkaline phosphatase activities were determined in the 0-20 cm layer of an eroded soil submitted to a complex fertilization experiment. Results showed that addition of mineral fertilizers to organic (green manure and farmyard manure) fertilizers led to a significant increase in each activity because of increased plant biomass production which upon incorporation stimulates soil biological activity. The enzymatic indicators of soil quality calculated from the values of enzymatic activities depending on the kind of fertilizers showed that by the determination of enzymatic activities valuable information can be obtained regarding fertility status of soils. A weak positive correlation between enzymatic indicators of soil quality and maize yield was established. The yield data demonstrate the superiority of farmyard manure which provided greater stability in crop production. Substantial improvement in soil biological activity due to application of organic fertilizers with mineral fertilizers contribute in maintaining the productivity and soil health.

scholarly journals Effects of Management and Hillside Position on Soil Organic Carbon Stratification in Mediterranean Centenary Olive Grove

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 650
Author(s):  
Jesús Aguilera-Huertas ◽  
Beatriz Lozano-García ◽  
Manuel González-Rosado ◽  
Luis Parras-Alcántara
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Quality ◽  
Management Practices ◽  
Soil Management ◽  
Olive Grove ◽  
No Tillage ◽  
Short Term ◽  
Degradation Degree

The short- and medium—long-term effects of management and hillside position on soil organic carbon (SOC) changes were studied in a centenary Mediterranean rainfed olive grove. One way to measure these changes is to analyze the soil quality, as it assesses soil degradation degree and attempts to identify management practices for sustainable soil use. In this context, the SOC stratification index (SR-COS) is one of the best indicators of soil quality to assess the degradation degree from SOC content without analyzing other soil properties. The SR-SOC was calculated in soil profiles (horizon-by-horizon) to identify the best soil management practices for sustainable use. The following time periods and soil management combinations were tested: (i) in the medium‒long-term (17 years) from conventional tillage (CT) to no-tillage (NT), (ii) in the short-term (2 years) from CT to no-tillage with cover crops (NT-CC), and (iii) the effect in the short-term (from CT to NT-CC) of different topographic positions along a hillside. The results indicate that the SR-SOC increased with depth for all management practices. The SR-SOC ranged from 1.21 to 1.73 in CT0, from 1.48 to 3.01 in CT1, from 1.15 to 2.48 in CT2, from 1.22 to 2.39 in NT-CC and from 0.98 to 4.16 in NT; therefore, the soil quality from the SR-SOC index was not directly linked to the increase or loss of SOC along the soil profile. This demonstrates the time-variability of SR-SOC and that NT improves soil quality in the long-term.

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