Systematically characterize soil under different land uses

The gap

Evidence profile

Sourced from the limitations section and recommendations and abstract and stated research gap of the source papers, classified as general, drawn from work published between 2020 and 2026, spanning 5 journals. Those papers have been cited 11 times in total.

Supporting evidence — 5 representative gaps

• Diagnosis of Soil Quality in Barley Farmlands in Central and Northern Hubei Province (2026) · Agronomy · doi

  The study only considered ten soil chemical properties, - The study did not consider other factors that might affect soil quality, - The study was limited to central and northern Hubei Province

  generallimitations section
  Keywords: study only considered ten soil chemical properties did
• Soil fertility status and nutrients content in maize (Zea mays L.) Tissue at Migna Kura in Wayu Tuka District, East Wollega, Ethiopia (2026) · African Journal of Agricultural Research · doi

  productivity. fertilizer for Soil sample preparation and physicochemical analysis Soil samples were air-dried at room temperature. The samples were ground using a pestle and mortar and passed through a 2 mm sieve for selected soil physicochemical analyses, while soil organic carbon (SOC) and total nitrogen (TN) were sieved using a 0.5 mm mesh. Soil texture, bulk density, pH, EC, organic carbon (OC), TN, available P, K, and micronutrients (Cu, Mn, Zn, Fe, and B), exchangeable bases (Ca²⁺, Mg²⁺, K⁺, and Na⁺), and cation exchange capacity (CEC) were analyzed at the Nekemte Soil Research Center. Soil texture was determined using the Bouyoucos hydrometer method (Day, 1965). After determining particle size distribution as percentages of sand, silt, and clay, soil textural classes were identified using the United States Department of Agriculture (USDA) soil textural triangle classification system, which is widely used for classifying soils based on the relative proportions of mineral particles (USDA, 2014). Soil bulk density (Bd) was determined from the weight of undisturbed core soil samples, which were first weighed at field moisture content and then oven-dried at 105°C until a constant weight was obtained (Baruah and Barthakur, 1998). Total porosity (TP) was estimated from bulk density (Bd) and particle density (Pd), expressed in Mg m⁻³, with particle density assumed to be the commonly used value of 2.65 g cm⁻³, as follows: Soil bulk density was determined by the undisturbed core sampling method and calculated by the following formula indicated by FAO (2006b): Pb= (wt.) V(cm3) where Wt.=Weights of oven-dry soils (g) and V=The volume of the cylindrical core (cm3). The major soil chemical properties such as soil pH, OC, OM, TN, exchangeable acidity, exchangeable bases (Ca, Mg, Na and K), CEC, available P, available potassium, S, and available micronutrients (B, Cu, Mn, Zn, and Fe) were analyzed following the standard laboratory procedures. Soil pH measured potentiometrically in the supernatant suspension of 1:2.5, soil to water ratio as described by (Moberg, 2000). SOC content (OC%) was analyzed by the dichromate oxidation method as described by (Walkley and Black, 1934). Total nitrogen was determined by wet digestion followed by distillation and titration using the Kjeldahl method (Sahlemedhin and Taye, 2000). Available P was analyzed by the Bray II method; using 1Mole HCl and 1M NH4F solutions as extract soil having pH values equal to 1.8 (Bray and Kurtz, 1945). Available potassium concentration was analyzed by CH3COONa.3H2O solution extracted method. The soil exchangeable bases (Ca, Mg, K and Na) were determined by saturating the soil samples with 1M NH4OAc solution at pH 7.0.

  generalrecommendationsevidence 5/5
  Keywords: soil using density available analyzed determined samples bulk exchangeable total bases particle core physicochemical dried
• Effects of Successive Planting of Eucalyptus on SoilPhysicochemical Properties 1–3 Generationsafter Converting Masson Pine Forestsinto Eucalyptus Plantations (2023) · Polish Journal of Environmental Studies · cited 10× · doi

  Soil physicochemical properties play a key role in plant growth and development; however, owing to land use change and successive planting, long-term changes in soil physicochemical properties are rarely reported.

  generalabstractevidence 4/5
  Keywords: soil physicochemical properties play role plant growth development owing land change successive planting long term
• SILICON CONTENT, PHYSICAL AND CHEMICAL PROPERTIES OF SOILS OF THE KHMELNYTSKY REGION OF UKRAINE (2020) · Visnyk of Taras Shevchenko National University of Kyiv Geology · cited 1× · doi

  However, there is limited research on the content of various forms of silicon in soils, the relationship with soil cations, which is particularly relevant in the context of intensive agriculture and climate aridization in Ukraine.

  generalabstractevidence 4/5
  Keywords: there limited content various forms silicon soils relationship soil cations particularly relevant context intensive agriculture
• Depth Wise Assessment of Soil Chemical Indicators under different land uses in District Pulwama of Kashmir valley (2026) · International Journal of Science, Strategic Management and Technology · doi

  There is a need to systematically characterize soil under different land uses. The relationship between land use and soil chemical indicators is not well understood.

  generalstated research gapevidence 3/5
  Keywords: there need systematically characterize soil different land uses

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