Land-use impacts on selected soil properties of the Yungas/Chaco transition forest of Jujuy province, northwestern Argentina: a preliminary study

2010 ◽  
Vol 90 (4) ◽  
pp. 679-683 ◽  
Author(s):  
S.W. Ripley ◽  
M. Krzic ◽  
G.E. Bradfield ◽  
A.A. Bomke
Keyword(s):  
Land Use ◽  
Soil Properties ◽  
Management Practices ◽  
Penetration Resistance ◽  
Soil Organic C ◽  
Total N ◽  
Organic C ◽  
Northwestern Argentina ◽  
Soil Penetration Resistance ◽  
Litter Cover

Grazing by domestic livestock, firewood cutting, and timber harvesting are the principal uses of the subtropical transition forest located between the humid Yungas and dry Chaco forests at the base of the Andes mountains in Jujuy province, northwestern Argentina. The objective of this study was to conduct a preliminary comparison of selected soil properties between two common land-use systems - deciduous forest rangeland (DFR) and open savanna anthropogenic rangeland (AR) - in the Yungas/Chaco transition forest. Soil organic C and N were measured at a depth of 0-10 cm, while soil penetration resistance was measured at 0-5 and 5-10 cm depths. Soil degradation in the AR was indicated by lower average values for litter cover (56%), soil organic C (28.1 g kg-1), and total N (2.93 g kg-1), and greater soil penetration resistance compared with the DFR (litter cover 94%; soil organic C 45.0 g kg-1, total N 4.45 g kg-1). This created potential for further soil losses from water erosion during monsoon rains and emphasized the need to establish sustainable grazing management practices.

scholarly journals Evaluation of Physicochemical Properties of Sandy-Textured Soils under Smallholder Agricultural Land Use Practices in Sarawak, East Malaysia

2019 ◽  
Vol 2019 ◽  
pp. 1-14
Author(s):  
Soo Ying Ho ◽  
Mohd Effendi Bin Wasli ◽  
Mugunthan Perumal
Keyword(s):  
Land Use ◽  
Physicochemical Properties ◽  
Soil Properties ◽  
Oil Palm ◽  
Agricultural Land ◽  
Secondary Forests ◽  
Land Uses ◽  
Total N ◽  
Organic C ◽  
Nutrient Contents

A study was conducted in the Sabal area, Sarawak, to evaluate the physicochemical properties of sandy-textured soils under smallholder agricultural land uses. Study sites were established under rubber, oil palm, and pepper land uses, in comparison to the adjacent secondary forests. The sandy-textured soils underlain in all agricultural land uses are of Spodosols, based on USDA Soil Taxonomy. The soil properties under secondary forests were strongly acidic with poor nutrient contents. Despite higher bulk density in oil palm farmlands, soil properties in rubber and oil palm land uses showed little variation to those in secondary forests. Conversely, soils under pepper land uses were less acidic with higher nutrient contents at the surface layer, especially P. In addition, soils in the pepper land uses were more compact due to human trampling effects from regular farm works at a localized area. Positive correlations were observed between soil total C and soil total N, soil exchangeable K, soil sum of bases, and soil effective CEC, suggesting that soil total C is the determinant of soil fertility under the agricultural land uses. Meanwhile, insufficient K input in oil palm land uses was observed from the partial nutrient balances estimation. In contrast, P and K did not remain in the soils under pepper land use, although the fertilizers application by the farmers was beyond the crop uptake and removal (harvesting). Because of the siliceous sandy nature (low clay contents) of Spodosols, they are poor in nutrient retention capacity. Hence, maintaining ample supply of organic C is crucial to sustain the productivity and fertility of sandy-textured soils, especially when the litterfall layers covering the E horizon were removed for oil palm and pepper cultivation.

Long-term effects of tillage, stubble, and nitrogen management on properties of a red-brown earth

1995 ◽  
Vol 35 (7) ◽  
pp. 923 ◽  
Author(s):  
NA Fettell ◽  
HS Gill
Keyword(s):  
Management Practices ◽  
Soil Organic C ◽  
Long Term Effects ◽  
Total N ◽  
Organic C ◽  
Stubble Retention ◽  
South Wales ◽  
Direct Drilling ◽  
N Management

Differences in soil organic carbon (C), total nitrogen (N), and pH resulting from 14 and 15 years of different tillage, stubble, and fertiliser N management practices were measured for a red-brown earth at Condobolin in western New South Wales. The 5 main treatments comprised stubble burning or retention in factorial combination with cultivation and direct drilling, and stubble incorporation combined with cultivation. Two rates of N fertiliser (0 and 40 or 50 kg/ha) were applied annually, and wheat was grown each year. There were no significant differences between tillage and stubble treatments for soil organic C, total N, or pH. Fertiliser N application caused small but significant increases in organic C and total N but decreased the pH of the surface 2.5 cm of soil by 0.4-0.5 units compared with the nil fertiliser rate. The study indicates that direct drilling and stubble retention with continuous wheat have had little long-term effect on soil organic C and total N in this low rainfall environment.

Do different land use changes in a deciduous forest ecosystem result in alterations in soil organic C and total N stocks?

2020 ◽  
Vol 457 (1-2) ◽  
pp. 153-165
Author(s):  
Rogers Wainkwa Chia ◽  
Yowhan Son ◽  
Wonwoo Cho ◽  
Young Geun Lee ◽  
Ganchudur Tsetsegmaa ◽  
...  
Keyword(s):  
Land Use ◽  
Forest Ecosystem ◽  
Deciduous Forest ◽  
Land Use Changes ◽  
Soil Organic C ◽  
Total N ◽  
Organic C

scholarly journals Effect of land use on soil chemical properties after 190 years of forest to agricultural land conversion

2019 ◽  
Vol 14 (No. 3) ◽  
pp. 121-131 ◽  
Author(s):  
Kateřina Zajícová ◽  
Tomáš Chuman
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Arable Land ◽  
Base Saturation ◽  
Organic Fertilizers ◽  
Land Uses ◽  
Soil Organic C ◽  
Total N ◽  
Organic C ◽  
The Village

Land use changes have a significant impact on soil properties and in some cases they are considered to be among the main threats to soil quality. The present study focuses on the relationship between soil chemistry and land use in a karstic region in Romania, where forests were converted to agricultural land 190 years ago by Czech settlers in the Banat Region. Out of several villages founded by the Czech settlers the study was done around the village of Sfinta Elena. The uniqueness of this study is that traditional agricultural practices using low intensity farming (fallow period, organic fertilizers) have been used continuously since the village was founded. Nowadays the landscape is a mosaic of different land uses. Sixty soil samples from 6 land uses, analysed for pH (active and exchangeable), total cation exchange capacity (CEC), base saturation, amount of Ca<sup>2+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>, accessible P, total N, and soil organic carbon, showed very low concentrations of analysed elements and very low values of CEC and base saturation in soils. Current arable land use exhibited the lowest values especially of soil organic C. Surprisingly, forest soils differed significantly from agricultural soils only in C/N ratio and soil organic C concentration.  

Topographic influence on the variability of soil properties within an undulating Manitoba landscape

2001 ◽  
Vol 81 (4) ◽  
pp. 439-447 ◽  
Author(s):  
G. Manning ◽  
L G Fuller ◽  
R G Eilers ◽  
I. Florinsky
Keyword(s):  
Soil Properties ◽  
Soil Ph ◽  
Management Practices ◽  
Agricultural Management ◽  
Soil Organic C ◽  
Soil Series ◽  
Organic C ◽  
Elevation Data ◽  
Landscape Character ◽  
Elevation Model

As soil properties influence productivity, it is of interest to characterize their distribution for the purpose of intensified agricultural management in variable landscapes. Soil properties (soil organic C content, soil pH, A horizon thickness, solum thickness and depth to carbonates) were studied in 10 intensively sampled transects in a gently undulating glacial till landscape near Miniota, Manitoba. Using a landform description model, the study site was delineated into upper, mid and lower elevation landform element complexes (LEC). The program used a digital elevation model created from relative elevation data collected on a 10-m grid. Sample points were also stratified by soil series; Newdale (Orthic Black Chernozem), Varcoe (Gleyed Rego Black Chernozem) and Angusville (Gleyed Eluviated Black Chernozem) soils of the Newdale association were identified. Landform element complexes were ranked lower > mid > upper with respect to convergent landscape character. The eluviated Angusville profiles occurred under more convergent landscape character than the Newdale or Varcoe series. There was a consistent rank of lower > mid > upper with respect to depth to carbonates, A horizon thickness, solum thickness and soil organic C content. Relative ranking of the pH in the Ap horizon was the opposite. In all cases, the lower LEC emerged as most clearly distinct. There was substantial variability in soil profile development, and, therefore, soil series membership, within individual LEC. This indicated that the scale at which LEC are delineated is broader than that at which soil series variability occurs. Nonetheless, LEC were useful in capturing gross variability in soil properties within the landscape at a scale that would allow unique agricultural management practices. Key words: Soil-landscape, solum thickness, depth to carbonates, organic carbon, soil pH

Changes in soil properties after application of dairy factory effluent to New Zealand volcanic ash and pumice soils

Soil Research ◽  
2001 ◽  
Vol 39 (3) ◽  
pp. 505 ◽  
Author(s):  
Graham P. Sparling ◽  
Louis A. Schipper ◽  
John M. Russell
Keyword(s):  
Hydraulic Conductivity ◽  
Soil Properties ◽  
Management Practices ◽  
Pasture Production ◽  
Total N ◽  
Organic C ◽  
Unsaturated Hydraulic Conductivity ◽  
Microbial C ◽  
Dairy Factory Effluent ◽  
Changes In Soil Properties

In field studies, we assessed the effects of irrigation with dairy factory effluent on the surface (0–10 cm) properties of 3 rhyolytic tephra soils. Horotiu and Te Kowhai soils had been irrigated for 22 years and Taupo soil for 2 years. Soil properties measured were: total organic C, total N, pH, bulk density, unsaturated hydraulic conductivity, moisture release characteristics, readily and totally available water, particle density, microbial C, soil respiration, mineralisable N, denitrification enzyme activity, and nitrification potential. Matched, non-irrigated areas were sampled for comparison. Average annual loadings (kg/ha) of C, N, and P since 1990 were 1120 kg N, 560 kg P, and 36 300 kg C onto Horotiu soil, and 760 kg N, 380 kg P, and 25 200 kg C onto the Te Kowhai soil. These post-1990 loadings were, on average, 23% less than pre-1990 values. Irrigation for 22 years onto the Horotiu and Te Kowhai soils caused no change, or a slight decrease, in total C and N in the topsoil, but microbial C and mineralisable N contents were more than doubled, and N cycling activity much increased. Soil pH was increased by up to 1.8 units. Unsaturated hydraulic conductivity was increased from 8.5 to 49.8 mm/h on the Horotiu soil, and from 6.5 to 29.0 mm/h on the Te Kowhai soil. Irrigation increased the volumetric water content between 10 and 100 kPa. Most of the changes in soil properties suggest current application rates and pasture production can be maintained or increased. The high loading and mineralisation of N in the irrigated soils raises concerns about potential leaching of nitrate; current management practices are targeted towards minimising N loadings from effluent.

Sustaining productivity of a Vertisol at Warra, Queensland, with fertilisers, no-tillage, or legumes. 1. Organic matter status

1995 ◽  
Vol 35 (7) ◽  
pp. 903 ◽  
Author(s):  
RC Dalal ◽  
WM Strong ◽  
EJ Weston ◽  
JE Cooper ◽  
KJ Lehane ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Management Practices ◽  
Grain Legumes ◽  
No Tillage ◽  
Soil Organic C ◽  
Total N ◽  
Rhodes Grass ◽  
Organic C ◽  
Annual Medics

Management practices involving legume leys, grain legumes, and no-tillage and stubble retention, along with nitrogen (N) fertiliser application for wheat cropping, were examined for their effectiveness in increasing soil organic matter (0-10 cm depth) from 1986 to 1993 in a field experiment on a Vertisol at Warra, Queensland. The treatments were (i) grass + legume leys (purple pigeon grass, Setaria incrassata; Rhodes grass, Chloris gayana; lucerne, Medicago sativa; annual medics, M. scutellata and M. truncatula) of 4 years duration followed by continuous wheat; (ii) 2-year rotation of annual medics and wheat (Triticum aestivum cv. Hartog); (iii) 2-year rotation of lucerne and wheat; (iv) 2-year rotation of chickpea (Cicer arietinum cv. Barwon) and wheat; (v) no-tillage (NT) wheat; and (vi) conventional tillage (CT) wheat. Fertiliser N as urea was applied to both NT wheat and CT wheat at 0,25, and 75 kg N/ha. year. The CT wheat also received N at 12.5 and 25kg N/ha. year. After 4 years, soil organic carbon (C) concentration under grass + legume leys increased by 20% (650 kg C/ha. year) relative to that under continuous CT wheat. Soil total N increased by 11, 18, and 22% after 2, 3, and 4 years, respectively, under grass + legume leys relative to continuous CT wheat. These increases in soil organic matter were mostly confined to the 0-2.5 cm layer. After the start of wheat cropping, organic C and total N levels declined steadily but were still higher than under CT wheat and higher than initial values in December 1985. Although 2-year rotations of lucerne-wheat and medic-wheat had a small effect on soil organic C, soil total N concentrations were higher than in the chickpea-wheat rotation and continuous CT wheat from November 1990 to November 1992. Soil under chickpea-wheat rotation had organic C and total N concentrations similar to continuous CT wheat, although from the former, about 70 kg/ha. year of extra N was removed in the grain from 1989 to 1993. No-tillage practice had a small effect on soil organic C, although total N concentration was higher than under CT wheat in November 1993. These effects were mainly confined to the surface 0-2.5 cm depth. The C to N ratio was only affected in soil under grass + legume leys, and no-tillage treatments. These data show that restoration of soil organic matter in Vertisol requires grass + legume leys, primarily due to increased root biomass, although soil total N can be enhanced by including legume leys for longer duration in cropping systems in the semi-arid and subtropical environment.

Corrigendum to: Conservation agriculture effects on soil properties and crop productivity in a semiarid region of India

Soil Research ◽  
2019 ◽  
Vol 57 (2) ◽  
pp. 200 ◽  
Author(s):  
J. Somasundaram ◽  
M. Salikram ◽  
N. K. Sinha ◽  
M. Mohanty ◽  
R. S. Chaudhary ◽  
...  
Keyword(s):  
Soil Properties ◽  
Management Practices ◽  
Crop Yields ◽  
Cropping Systems ◽  
Soil Layer ◽  
Conservation Agriculture ◽  
Semiarid Region ◽  
Reduced Tillage ◽  
Organic C ◽  
Residue Retention

Conservation agriculture (CA) including reduced or no-tillage and crop residue retention, is known to be a self–sustainable system as well as an alternative to residue burning. The present study evaluated the effect of reduced tillage coupled with residue retention under different cropping systems on soil properties and crop yields in a Vertisol of a semiarid region of central India. Two tillage systems – conventional tillage (CT) with residue removed, and reduced tillage (RT) with residue retained – and six major cropping systems of this region were examined after 3 years of experimentation. Results demonstrated that soil moisture content, mean weight diameter, percent water stable aggregates (&gt;0.25mm) for the 0–15cm soil layer were significantly (Pmoderately labile&gt;less labile. At the 0–15cm depth, the contributions of moderately labile, less labile and non-labile C fractions to total organic C were 39.3%, 10.3% and 50.4% respectively in RT and corresponding values for CT were 38.9%, 11.7% and 49.4%. Significant differences in different C fractions were observed between RT and CT. Soil microbial biomass C concentration was significantly higher in RT than CT at 0–15cm depth. The maize–chickpea cropping system had significantly (P–1 followed by soybean+pigeon pea (2:1) intercropping (3.50 t ha–1) and soybean–wheat cropping systems (2.97 t ha–1). Thus, CA practices could be sustainable management practices for improving soil health and crop yields of rainfed Vertisols in these semiarid regions.

scholarly journals Effect of Soil Management on Erosion in Mountain Vineyards (N-W Italy)

2021 ◽  
Vol 13 (4) ◽  
pp. 1991
Author(s):  
Silvia Stanchi ◽  
Odoardo Zecca ◽  
Csilla Hudek ◽  
Emanuele Pintaldi ◽  
Davide Viglietti ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Management Practices ◽  
Soil Management ◽  
Buffer Strips ◽  
Total N ◽  
Organic C ◽  
Erosion Rates ◽  
Soil Ecosystem Services ◽  
Erosion Mitigation ◽  
Management Approaches

We studied the effects of three soil management approaches (permanent grassing, chemical weeding, and buffer strips), and the additional impact of tractor passage on soil erosion in a sloping vineyard located in the inner part of Aosta Valley (N-W Italian Alps). The vineyard rows were equipped with a sediment collection system with channels and barrel tanks. A total of 12 events with sediment production were observed across 6 years, and the collected sediments were weighted and analyzed. Average erosion rates ranged from negligible (mainly in grassed rows) to 1.1 t ha−1 per event (after weeding). The most erosive event occurred in July 2015, with a total rainfall of 32.2 mm, of which 20.1 were recorded in 1 h. Despite the limited number of erosive events observed, and the low measured erosion rates, permanent grassing reduced soil erosion considerably with respect to weeding; buffering had a comparable effect to grassing. The tractor passage, independent of the soil management approaches adopted, visibly accelerated the erosion process. The collected sediments were highly enriched in organic C, total N, and fine size fractions, indicating a potential loss of fertility over time. Despite the measured erosion rates being low over the experiment’s duration, more severe events are well documented in the recent past, and the number of intense storms is likely to increase due to climate change. Thus, the potential effects of erosion in the medium and long term need to be limited to a minimum rate of soil loss. Our experiment helped to compare soil losses by erosion under different soil management practices, including permanent grassing, i.e., a nature-based erosion mitigation measure. The results of the research can provide useful indications for planners and practitioners in similar regions, for sustainable, cross-sectoral soil management, and the enhancement of soil ecosystem services.

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