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Paper Information

Journal:   WATERSHED MANAGEMENT RESEARCHES (PAJOUHESH-VA-SAZANDEGI)   winter 2019 , Volume 31 , Number 121 #f00619; Page(s) 84 To 93.

Effect of polyvinyle acetate polymer on soil surface resistance variations

Author(s):  GHOLAMI LEILA*, Haghjoo Zahra, Kavian Ataollah
* Department of Watershed Management Engineering, Collage of Natural Resources, Sari of Agricultural Sciences and Natural Resources, Sari, Iran
One of the most important problems in the world nowadays is the soil erosion, which reduces soil fertility, increases sediment concentration in rivers and dam’ s reservoirs. For this purpose, the present study was conducted to investigate soil surface resistance changes using a polyvinyl acetate polymer with rates of 5, 10, 15, 20 and 25 ml and application concentrations of 5, 10, 15, 20, 25 percent in laboratory conditions and plot scale. The polymer application with a concentration of 25 percent and a rate of 25 ml in the level of 0. 79 m2 had the most soil surface resistance with a rate of 3. 3 kg cm-2. According to the obtained results and the economic cost (each litre of polyvinyl acetate of 100000 Rials) can state that the level of 15 percent can be selected as an optimum level for increasing soil surface resistance. With regard to the results it can be concluded that the used polymer in addition to the increasing soil surface resistance can have an effect on the soil conservation and control of water erosion.
Keyword(s): Inorganic Amendments,Laboratory Conditions,Rainfall Simulation,Soil Surface Resistance
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