Global Journal of Science Frontier Research, D: Agriculture and Veterinary, Volume 23 Issue 1

Global Journal of Science Frontier Research: D Agriculture and Veterinary Volume 23 Issue 1 Version 1.0 Year 2023 Type: Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Online ISSN: 2249-460x & Print ISSN: 0975-587X The Modified Richard’s Equation for Assessing the Impact of Drought and Salinity in Arid and Semi-Arid Zones. Part Two: A Soil Hydraulic Capacitance By El-Shazly Mohamed Hegazy Cairo University TheModifiedRichardsEquationforAssessingtheImpactofDroughtandSalinityinAridandSemiAridZonesPartTwoASoilHydraulicCapacitance Strictly as per the compliance and regulations of: © 2023. El-Shazly Mohamed Hegazy. This research/review article is distributed under the terms of the Attribution- NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0). You must give appropriate credit to authors and reference this article if parts of the article are reproduced in any manner. Applicable licensing terms are at https://creativecommons.org/ licenses/by-nc-nd/4.0/. Abstract- A soil hydraulic capacitance is a new physical property related to the interactions between the agro eco-system components soil, water, plant and atmosphere. It gives new quantitative details about the processes control the plant water uptake, ascending of sap and soil response toward the root water uptake under a certain soil moisture regime and climatic changes. The soil hydraulic capacitance, a tank like a plant water reservoir, is being controlled by signals, valves like switches. Three types of signaling devices, Geo, Bio, and weather controlled were discussed. The soil hydraulic capacitance property was first discovered by the author when modeling the wheat root water uptake under saline and drought conditions. Under the latter extreme conditions, treating plants with silica products was the managerial practice used for enhanced plant growth and water uptake. A split-split plot experimental design with four replicates was used to conduct the research in Oraby Village, Maryout area, Alexandria, Egypt in the last year of the most water-scarce decade. Keywords: soil hydraulic capacitance, drought and salinity stresses, strain, compensated water uptake. GJSFR-D Classification: FOR Code: 070308