Abstract

The effects of olive mill effluent on evaporation assessed from the surface of two kinds of soil sandy loam and loam textures with two different temperatures. In the other hand five treatments for each texture were prepared in three replicates, including wastewater treatment stained with olives in a value and two percent, compost mixture treatments, mulch amount equal to 50 tons/h, control and water. Eleven treatments were used. Treatments only to a depth of 5.0 cm of soil were applied. 0.0 to 5.0 cm depth of soil particles passed through the eight millimeters sieve and the remaining depth to bottom pot (13 cm) were full by a particle passed through 2.0 mm sieve. By measuring weight loss pots completely "wet every day of the evaporating three months for each period temperature were assessed. Soil temperature in depths of 2.0 and 10.0 cm twice each day, once at 8 a.m. (temperature achieved during the night) and the other at 19 p.m. (temperature gained during the day) were recorded. Stored soil moisture in different potential (zero, 0.05, 0.1, 0.3, 1.5 and 15 bar) in the olive mill effluent for both texture by pressure plates and tempi cells were measured. Statistical analysis of data from completely randomized design (CRD). These results indicate that the rate of the hydrophobic material used in both textures had indirect relation with evaporation from the soil surface.

Key words: Olive mill effluent, mulch, compost mixture, evaporation.

Abbreviation

OME, olive mill effluent; CE, Cumulative evaporation; CER, Cumulative evaporation reduction