CHARACTERIZATION OF SOME MOLLISOLS PROPERTIES IN THE COASTAL REGION (LATTAKIA - SYRIA)

Samar Ghanem — Tue, 25 Feb 2025 00:00:00 +0000

This research is part of a comprehensive study conducted on the soils in Lattakia Governorate between 2019 and 2020. Six profiles of Mollisols from the coastal areas of the governate involving their morphological, physical, chemical, mineral, and organic aspects were studied. The results showed high percentage of organic matter in the Mollic Epipedon with partial washing of carbonates in some profiles and formed on a calcareous parent material. The texture of the soil was affected by the type of the parent rock and was clayey in most horizons of the profiles on calcareous rock. The mineral composition showed the dominance of calcite followed by quartz in the soil profiles of limestone rocks, while primary minerals dominated in igneous rocks. A general chemical analysis showed the dominance was clearly for calcium oxide together with relatively high values for silicon, iron, and magnesium oxides in the mafic and ultramafic rocks. The profile soils were characterized by high cation exchange capacity with high saturation with bases. There was no dominant type of humus with the humification rate ranging from high to medium, while that for humin was low to medium.

ZINC AND IT ROLE IN CROP RESISTANCE TO SALINITY STRESS: A REVIEW

W. M. Abdulateef, Jamilu Garba, T. F. Sadiq — Fri, 07 Mar 2025 00:00:00 +0000

Salinity in soil and irrigation water is one of the most important problem in arid and semi-arid regions, this is due to its impact on the growth and productivity of various crops. These soils contain large amounts of total dissolved salts, which causes high osmotic pressure outside the absorption zone, thus, leading to the inability of the root to absorb water and nutrients necessary for plant life. Due to the increasing water scarcity in recent years, the crisis has been exacerbated, prompting researchers to adopt strategies suitable for salt stress conditions in soil and plants. Amongst these strategies is zinc fertilization programs, which can increase plant tolerance to salt stress. This article reviews the ability of zinc to regulate ionic balance by reducing chloride and sodium concentrations and increasing potassium concentration as well as the ratio of potassium to sodium. It has also reviewed it role in increasing activities of antioxidant enzymes, which reduces the effects of salt stress on plants, hence, increasing its tolerance.

Journal of Life Science and Applied Research

CHARACTERIZATION OF SOME MOLLISOLS PROPERTIES IN THE COASTAL REGION (LATTAKIA - SYRIA)

ZINC AND IT ROLE IN CROP RESISTANCE TO SALINITY STRESS: A REVIEW