Saoud Sarboukh(1)*, Sulaiman Saleem(2) ,Muhammad Saied El-Shater(2)
And Sami Al_Hinnawi(1)
(1) GCSAR, Damascus, Syria.
(2) Faculty of Agriculture, Damascus University, Damascus, Syria.
(*Corrsponding author: Saoud Sarboukh E-Mail: srbook72@gmail.com).
Abstract
A field experiment was made in hout research station, general commotion of scientific agriculture research, 30 km southern of As-Suwaidaa, in 2015- 2016, where the soil is heavy clayey , medium in depth, poor in organic matter, poor in calcium carbonate. Results showed that the increases of volcanic tuff additions caused a significant decreases at (p< 0.05) in soil midum porosity (3-30 micrometer in diameter) to (14.63%, 19.02%) in the treatments of adding tuff by 5% by volume, symbolized by (T1), and by 10%, symbolized by (T2) respectively compared with the control treatment (T0). The addition of volcanic tuff (T1), (T2) caused a significant increases at (p<0.05) in macro porosity (more than 30 micrometer in diameter) to (8.46 %, 11.33%) respectively compared with (T0) to 25 cm in depth. This reflects the importance of addition of volcanic tuff at 10% 0f soil volume to 25 cm in depth to improve Vertysols aeration and its physical and hydrological properties.
Keyword: Volcanic Tuff, Bulk Density, Real Density, Microporosity, Macroporosity, Porosity.
Full paper in Arabic: pdf