scholarly journals Characterization and Classification of Soils and Water in Major Irrigated Lands of Lake Abaya Chamo Basin.

2021 ◽  
Author(s):  
Gezimu Gelu ◽  
alemnesh gelu gezimu ayza ◽  
Chanako dane
Keyword(s):  
Irrigation Water ◽  
Water Productivity ◽  
Chemical Properties ◽  
Sustainable Land Use ◽  
Mitigation Measures ◽  
Lake Basin ◽  
Physico Chemical ◽  
Irrigated Lands ◽  
Chemical Properties Of Soils

Abstract Large amount of irrigated land under Lake Abaya Chamo basin is becoming unproductive every year because of salinity and sodicity expansion; consequently farmers are leaving their land out of cultivation due to burning of crops. For sustainable land use and Agricultural water management, it is a very important to examine the chemical composition of soils water and status of their quality. Therefore, the study was aimed to evaluate the physico-chemical properties of soils and irrigation water of irrigated lands under Lake Abaya Chamo basin, located in South East rift valley of Ethiopia. The pH of the soil in the study area ranged from (7.24 to 9.04, 7.54 to 7.91), Electrical conductivity (0.388 to 19.22, 0.644 to 23.6) under Lake Abaya and Chamo, respectively. The results of irrigation water quality showed that the water class of lake Abaya Chamo basin is under harzard status of salinity and sodicity and cannot be recommended for irrigation use. There is a potential danger of sodicity and salinity development in the intended lake basin. Thus, selection of salinity and sodicity resistant crop types, proper irrigation water application methods and other chemical mitigation measures should be designed for sustainability of soil and water productivity.

scholarly journals Soil Heterogeneity Reflected in Biogeography of Beech Forests in the Borderland Between the Bohemian Massif and the Outer Western Carpathians

2014 ◽  
Vol 33 (4) ◽  
Author(s):  
Pavel Samec ◽  
Aleš Kučera ◽  
Klement Rejšek
Keyword(s):  
Bohemian Massif ◽  
Chemical Properties ◽  
Specific Weight ◽  
Soil Heterogeneity ◽  
Western Carpathians ◽  
Volume Weight ◽  
Physico Chemical ◽  
Outer Western Carpathians ◽  
Chemical Properties Of Soils

AbstractSoil environment characteristics naturally affect the biogeographical classification of forests in central Europe. However, even on the same localities, different systems of vegetation classification de-scribe the forest types according to the naturally dominant tree species with different accuracy. A set of 20 representative natural beech stands in the borderland between the Bohemian Massif (Hercyni-an biogeographical subprovince) and the Outer Western Carpathians (Westcarpathian subprovince) was selected in order to compare textural, hydrostatic, physico-chemical and chemical properties of soils between the included geomorphological regions, bioregions and biotopes. Differences in the soils of the surveyed beech stands were mainly due to volume weight and specific weight, maximum capillary capacity (MCC), porosity, base saturation (BS), total soil nitrogen (N

scholarly journals Leaching of Herbicides Commonly Applied to Sugarcane in Five Agricultural Soils

2019 ◽  
Vol 37 ◽  
Author(s):  
A.C.D. GUIMARÃES ◽  
K.F. MENDES ◽  
T.F. CAMPION ◽  
P.J. CHRISTOFFOLETI ◽  
V.L. TORNISIELO
Keyword(s):  
Physicochemical Properties ◽  
Weed Management ◽  
Soil Profile ◽  
Agricultural Soils ◽  
Chemical Properties ◽  
Rainfall Simulation ◽  
Mitigation Measures ◽  
Physico Chemical ◽  
Chemical Properties Of Soils ◽  
Potential Contaminant

ABSTRACT: Leaching intensity depends on the physicochemical properties of soils and herbicides. Consequently, a good understanding of this process is essential to determine mitigation measures to reduce or eliminate the risk of water contamination around areas with sugarcane crops. Therefore, the objective of this study was to analyze the leaching of ametryn, diuron, hexazinone, and metribuzin by using columns in five soils with different physicochemical properties cultivated with sugarcane. The radiolabeled herbicides with 14C were evaluated at six soil depths (0-0.05, 0.05-0.10, 0.10-0.15, 0.15-0.20, 0.20-0.25, and 0.25-0.30 m) and in the leachate after 200 mm rainfall simulation for 48 h. Herbicide leaching was mostly affected by soil type. Ametryn and diuron were reported in the highest amount (>87%) on the topsoil (0-0.05 m), which was indicative of the low leaching of these two herbicides in the soil profile. Thus, these herbicides can contaminate surface water by runoff. Leachate percentage was always <0.3% for ametryn, diuron, and metribuzin; this was also the case for hexazinone in two out of the five soils. Hexazinone proved to be a potential contaminant of groundwater and metribuzin presented high leaching in the soil profile. Previous knowledge of the physico-chemical properties of soils cultivated with sugarcane is essential to recommend the use of these herbicides in weed management.

scholarly journals Effect of no tillage on the physico-chemical properties of soils of the El Koudia region, Rabat (Morocco)

2020 ◽  
Vol 150 ◽  
pp. 03010
Author(s):  
Hassnae Maher ◽  
Rachid Moussadek ◽  
Abdelmjid Zouahri ◽  
Ahmed Douaik ◽  
Houria Dakak ◽  
...  
Keyword(s):  
Organic Matter ◽  
Structural Stability ◽  
Plant Cover ◽  
Chemical Properties ◽  
Aggregate Stability ◽  
Agricultural Practices ◽  
Conventional Tillage ◽  
No Tillage ◽  
Physico Chemical ◽  
Chemical Properties Of Soils

In Morocco, agriculture is an important sector of the economy, accounting for 15 to 20% of Gross Domestic Product. However, it has faced several challenges: intensive tillage of land that has accelerated water erosion, seriously threatening water and soil potential, low plant cover density and misuse of traditional agricultural practices, causing a decrease in organic matter levels and destroying aggregate stability. Climate change is making water and soil management in agriculture more and more complicated. The major challenge for Moroccan agriculture is to increase agricultural production while preserving natural resources. The objective of our study is to evaluate the effect of no tillage (NT) on the physico- chemical properties of soil in the El Koudia experimental station, Rabat, Morocco. The crop is durum wheat, Arrehane variety. Soil samples are pre-dried, ground and screened to 0.2mm for organic matter (OM) analysis and 2mm for the remainder of the analyses. Plugs, canned, are then sintered, screened and dried for structural stability tests. The results show that no tillage (NT) favours the accumulation of surface OM, particularly at the 0-5cm horizon unlike conventional tillage (CT). The NT promotes structural stability, with a mean weight diameter (MWD) = 0.94mm for the NT compared to 0.83mm for the CT. These results show that soils ploughed in CT are more exposed to erosion degradation than soils not ploughed (NT). In addition, NT preserves soil moisture and promotes additional water retention of 5 to 10%.

Soil Morphology, Physico - Chemical Properties and Classification of Typical Soils of Mwala District, Kenya

2015 ◽  
Vol 4 (2) ◽  
pp. 156-170 ◽  
Author(s):  
Anne Karuma ◽  
Charles Gachene ◽  
Balthazar Msanya ◽  
Peter Mtakwa ◽  
Nyambilila Amuri ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Soil Morphology ◽  
Physico Chemical

Classification of Natural and Thermo-Modified Peat by Class-Modeling Techniques

2016 ◽  
Vol 683 ◽  
pp. 596-600
Author(s):  
Aleksey Zarubin ◽  
Natalia Chukhareva
Keyword(s):  
Latent Variables ◽  
Chemical Properties ◽  
Component Composition ◽  
Thermal Modification ◽  
Raw Material ◽  
Data Matrix ◽  
Prediction Errors ◽  
Physico Chemical ◽  
Modeling Techniques

Significant attention is paid to the production of peat-based materials in modern days. The study explores the influence of natural peat thermal modification on its properties by applying class-modeling techniques. Modification of different types of peat is achieved by heating at 250 °C. The set of peat properties such as component composition, g-factor and IR-spectra is used to obtain data matrix. It is shown that class-modeling techniques, such as partial least-squares discriminant analysis (PLS-DA) and simple independent modeling of class analogy (SIMCA), allow estimating peat class (natural or modified) by a set of properties without prediction errors by using three latent variables. According to the results of classification, it is established that thermal modification can be considered as a means of regulating the composition and physico-chemical properties of natural peats as a raw material

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