scholarly journals Assessment of Soil Properties and the Development of Lime Requirement Equations for Some Soils in South-Eastern Nigeria

2020 ◽  
Vol 16 (1) ◽  
pp. 1-12
Author(s):  
O.B. Iren ◽  
D.J. Udoh ◽  
V.F. Ediene ◽  
E.E. Aki
Keyword(s):  
Soil Properties ◽  
South Eastern

Mapping change in key soil properties due to climate change over south-eastern Australia

Soil Research ◽  
2019 ◽  
Vol 57 (5) ◽  
pp. 467 ◽  
Author(s):  
Jonathan M. Gray ◽  
Thomas F. A. Bishop
Keyword(s):  
Climate Change ◽  
Soil Properties ◽  
Management Practices ◽  
Climate Models ◽  
Carbon Accounting ◽  
Depth Interval ◽  
Soil Conditions ◽  
South Eastern ◽  
Eastern Australia ◽  
South Eastern Australia

Climate change will lead to altered soil conditions that will impact on plant growth in both agricultural and native ecosystems. Additionally, changes in soil carbon storage will influence carbon accounting schemes that may play a role in climate change mitigation programs. We applied a digital soil mapping approach to examine and map (at 100-m resolution) potential changes in three important soil properties – soil organic carbon (SOC), pH and sum-of-bases (common macro-nutrients) – resulting from projected climate change over south-eastern Australia until ~2070. Four global climate models were downscaled with three regional models to give 12 climate models, which were used to derive changes for the three properties across the province, at 0–30 and 30–100 cm depth intervals. The SOC stocks were projected to decline over the province, while pH and sum-of-bases were projected to increase; however, the extent of change varied throughout the province and with different climate models. The average changes primarily reflected the complex interplay of changing temperatures and rainfall throughout the province. The changes were also influenced by the operating environmental conditions, with a uniform pattern of change particularly demonstrated for SOC over 36 combinations of current climate, parent material and land use. For example, the mean decline of SOC predicted for the upper depth interval was 15.6 Mg ha–1 for wet–mafic–native vegetation regimes but only 3.1 Mg ha–1 for dry–highly siliceous–cropping regimes. The predicted changes reflected only those attributable to the projected climate change and did not consider the influence of ongoing and changing land management practices.

Short-term changes in soil properties under tillage systems and their effect on sweet potato (Ipomea batatas L.) growth and yield in an Ultisol in south-eastern Nigeria

Soil Research ◽  
2007 ◽  
Vol 45 (5) ◽  
pp. 351 ◽  
Author(s):  
M. A. N. Anikwe ◽  
J. N. Ubochi
Keyword(s):  
Soil Temperature ◽  
Soil Properties ◽  
Bulk Density ◽  
Sweet Potato ◽  
Tuber Yield ◽  
Growth And Yield ◽  
N Content ◽  
South Eastern ◽  
Early Stages ◽  
Crop Development

Tillage influences soil quality via its effects on soil physical, chemical, and biological properties, which in turn affect crop productivity. This study evaluates the effects of conventional (CT) and no-till (NT) systems on (1) soil temperature, bulk density, soil gravimetric water content (GWC), saturated hydraulic conductivity (Ksat), soil organic carbon content (SOC), and total nitrogen (N), and (2) growth and yield of 3 sweet potato (Ipomoea batatas) (L) Lam varieties (87/00/87, ex-Igbariam, and 8164). A field experiment was conducted in 2005 and 2006 on a Typic paleudult in south-eastern Nigeria. The experimental plots comprised 6 treatments (CT 87/00/87 variety, CT ex-Igbariam, CT 8164, NT 87/00/87 variety, NT ex-Igbariam, NT 8164 variety) laid out in the field using randomised complete block design replicated 3 times. Soil temperature was 1–2°C higher in CT plots during early stages of crop development. CT plots had significantly lower soil dry bulk density (1.30–1.35 Mg/m3) than NT plots. Soil GWC was higher, whereas Ksat was lower, in NT plots than CT plots at 35 and 65 days after planting (DAP) for both planting seasons. NT plots had a 0.22–0.26-fold increase in SOC and 16–27% higher N content compared with CT plots at 35 and 65 DAP. The 3 varieties of sweet potato used did not significantly influence soil properties at the different times after planting. Sweet potato yield obtained in CT 87/00/87 variety (21.7–24.9 Mg/ha) for both seasons was higher (P < 0.05) than sweet potato tuber yield obtained from NT ex-Igbariam plots (which had the lowest yield) by about 88%. For each variety, CT plots has significantly higher yield than NT plots. This study showed that although NT practices conserved soil moisture, decreased soil temperature, reduced water infiltration, and increased SOC and soil total N content when compared to CT plots, the reduction in soil compaction at the early stages of crop development (0–65 DAP) in CT plots had a more positive impact on tuber yield and masked the positive effect of other soil productivity parameters for this crop.

scholarly journals Changes of vegetation effects in soil properties in the post-agriculture landscapes (south-eastern Poland)

2019 ◽  
Vol 23 (1) ◽  
pp. 63-70
Author(s):  
Agnieszka Joanna Sosnowska
Keyword(s):  
Soil Properties ◽  
21St Century ◽  
Secondary Succession ◽  
Agricultural Landscapes ◽  
Plant Succession ◽  
Common Phenomenon ◽  
Agricultural Lands ◽  
Vegetation Effects ◽  
South Eastern ◽  
Fallow Lands

Abstract Plant succession is quite a common phenomenon in Poland, especially in agricultural landscapes. At the turn of the 21st century there was a significant increase in the area of fallow lands. That increased the area occupied by ruderal and segetal vegetation. The development of vegetation on post-agricultural lands transforms soils. The aim of this paper is to determine changes in vegetation and soil properties that occur as a result of secondary succession on post-agricultural lands in loess landscapes

scholarly journals Effects of Rice mill wastes on Soil properties in a Rice-producing State of South-eastern Nigeria

2018 ◽  
pp. 115-122
Author(s):  
Ifejimalu A.C.
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Properties ◽  
Natural Resources Management ◽  
Sampling Point ◽  
Hilly Terrain ◽  
Resources Management ◽  
South Eastern ◽  
Rice Milling ◽  
Lower Slope

A research was conducted in 2015 and 2016 in Abakaliki, Ebonyi State, South-eastern Nigeria, to determine the effects of heavy dumping of rice mill wastes on soil properties. Samples were collected from soils in Abakaliki rice mill industry. Auger and core samples were collected from Faculty of Agriculture and Natural Resources Management, FARM (control) and at Abakaliki rice milling industry in hilly terrain at three sites namely: crest (S1), mid-slope (S 2) and lower slope (S3). The result showed that respective soil bulk den- sity for S1, S2 and S3 were 1.14 gcm-3, 1.44 gcm-3 and 1.31 gcm-3 in 2015 and 1.58 gcm-3, 1.61 gcm-3 and 1.50 gcm-3 in 2016 against control (1.64 gcm-3 and 1.66 gcm-3) for the two years. Soil organic carbon was higher in Crest (30.30 gkg-1) compared to control (5.10 gkg ), mid-slope (17.0 gkg -1) and lower slope (22.20 gkg-1) in 2015. In 2016, soil organic carbon was higher in S1 (30.50 gkg-1) compared to control (5.10 gkg-1), S2 (18.30 gkg-1) and S3 (25.20 gkg-1). The results indicate that the soil properties studied were higher in rice mill dumpsite except for BD than control. Different sampling point in most cases did not vary among themselves. It is recommended that rice mill wastes should be used in farms as soil amendment and generation of farm energy.

scholarly journals RESEARCH AND ASSESSMENT OF FOREST SOIL PROPERTIES IN SOUTH-EASTERN LITHUANIA / PIETRYČIŲ LIETUVOS MIŠKO DIRVOŽEMIO SAVYBIŲ TYRIMAI IR VERTINIMAS

2011 ◽  
Vol 3 (5) ◽  
pp. 70-76
Author(s):  
Dovilė Vaitkutė ◽  
Pranas Baltrėnas
Keyword(s):  
Soil Moisture ◽  
Organic Carbon ◽  
Pinus Sylvestris ◽  
Soil Properties ◽  
Total Organic Carbon ◽  
Forest Soil ◽  
Soil Samples ◽  
Chemical Research ◽  
South Eastern ◽  
Made In

Along with chemical research on the Scots pine (Pinus sylvestris L.) growing in the South – Eastern part of Lithuania, the analysis of soil properties was given close attention. The analysed forest soil samples were collected in the spring and summer seasons of 2011. Before sampling, a grid of the area covering 10×10 km including all biggest forest areas of the territory was made. In total, 42 composite forest soil samples were examined. The conducted analysis measured soil moisture, pH and the content of total organic carbon. The assessment of these parameters and performed statistical analysis has disclosed that the content of total organic carbon positively and significantly correlates with pH and the content of soil moisture. Additionally, it has been determined that the content of total organic carbon tends to increase when pH of soil is close to neutral and a total value of soil moisture does not reach 0,61%. Santrauka Tiriant Pietryčių Lietuvos paprastosiose pušyse (Pinus sylvestris L.) susikaupusių metalų kiekius, daug dėmesio buvo skiriama dirvožemio savybių analizei. Straipsnyje aptariami miško dirvožemio ėminiai, imti 2011 m. pavasarį ir vasarą. Prieš atliekant lauko tyrimus buvo sudarytas 10 ×10 km dydžio ėminių ėmimo tinklelis, apimantis didžiausius Pietryčių Lietuvos miškų masyvus. Iš viso ištirti 42 sudėtiniai miško dirvožemio ėminiai. Buvo nustatomas dirvožemio drėgnis, pH ir bendrosios organinės anglies kiekis. Įvertinus šiuos parametrus ir atlikus statistinę analizę nustatyta, kad dirvožemio bendrosios organinės anglies kiekis priklauso nuo dirvožemio pH ir drėgnio. Taip pat įvertinus organinės anglies kiekio priklausomybę nuo abiejų minėtųjų parametrų, pastebėta tendencija, kad bendrosios organinės anglies kiekis gali siekti net 30–50 mg/kg (vidutinė koncentracija Pietryčių Lietuvoje yra 6–10 mg/kg), dirvožemio pH vertė – 6–8, o dirvožemio drėgnis mažesnis nei 0,6 %.

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