Inorganic mineral elements in sandy soil, and their effect on agricultural crops "The soil of the Libyan Kufra Oasis as a model"

The current research seeks to identify the proportions and quantities of quantitative analysis of inorganic mineral elements in sandy soil and their effect on agricultural crops in the soil of the Libyan Kufra Oasis. The quantitative approach was relied upon in analyzing the study samples that were brought from three different regions of the Kufra Oasis, including typical agricultural production projects, which include many fruit trees and seasonal crops. After subjecting the samples to quantitative analysis, through physical and chemical analysis, we arrived at results including: The results of physical testing of dry sandy soil samples from the study areas showed that the general average humidity reached (3.63%). The highest area of the Kufra project for palm and olive cultivation was the central region, where the moisture analysis rate reached (3.98%). It is clear from the results of the quantitative (chemical) analysis of samples from the three regions in the study that the general average pH is (6.25), which is a good degree and the soil does not reach the degree of alkalinity, which allows agriculture to be practiced successfully in those regions, especially (wheat - watermelon - mango - trees). ). palm and olive). It is clear from the quantitative (chemical) analysis of samples from the three study areas that the general salinity percentage in the sandy soil is (0.355%), which is less than (0.4%), and thus is within the range of average salinity levels. The general average percentage of the mineral “calcium” in the sandy soil of the three study areas was (2.56%), calcium” in the sandy soil of the three study areas was (7.49%), iron in the sandy soil of the three study areas was 5.30%, “magnesium” in the sandy soil of the three study areas was (2.13%), "potassium" in the sandy soil of the three study areas was (5.69%), “lime” element in the sandy soil of the three study areas was (7.45%), “silicone” element in the sandy soil of the three study areas was (25.21%).