Al- Muthana Subhi Al- Diwani (1) and Irfan Aswad Al-Hamd*(1)
(1)Department of Soil and Land Reclamation – Faculty of Agriculture – Euphrates University.
(*Corrsponding author: Irfan Al-Hamd. E-Mail: orfan.alhmad@gmail.com)
Received: 22/02/2020 Accepted: 23/03/2020
Abstract
The study aimed to assess wet soil construction and the extent to which its compounds are water resistant during the use of different rates of leaching water. A field experiment was carried out at Al-Hariji area in Deir ez-Zor governorate in 2018 and is outside the scope of agricultural investment due to excess salinity. Using the method of the double metal rings internal in diameter (50) cm and external in diameter (75) cm, by adding the following rates: (5000, 7500, 10,000 m3/ha) and then covered the rings with nylon cover and thin layers of soil and herbs in order to reduce the evaporation process and designed the laundry experiment in the manner of random sectors and three repeats for each washing rate, and by (5 meters) between each two rings successively. The results were as follows: the unacceptable wet structural analysis of the diameter- granules (>0.25) changed to a bad state after using the washing rates (7500, 10,000) m3/ha at a depth of (0-25) cm. The soil was exposed to water drift under heavy rains and fragmentation of soil compound granules and thus sabotage its construction, resulting in the impoverishment and degradation of the surface layer with soft elements. This calls for the addition of organic and mineral residues as stable fertilizer and agricultural sulfur in order to improve this layer and provide it with the nutrients necessary for the growth of agricultural crops naturally and well. It was also noted that there were moral differences resulting from the effect of different washing rates, depth and interaction with wet compounds as a result of the addition of different amounts of washing water.
Keywords: Washing Water, Washing Rates, Wet Sifting.
Full paper in Arabic: PDF