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INFLUENCE OF GROUND COBS AND FUEL OIL APPLICATION ON WIND EROSION PARAMETER AND DESERTIFICATION OF BAIJI SAND DUNES | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 38, Issue 6, 2007, Pages 14-21 | ||
| Author | ||
| A. A. Thijeal | ||
| Abstract | ||
| The experiment was conducted to study the effect of different rates of corn cobs and fuel oil application on water retention and crodobility parameters of Baiji . Four rates (0 , 10 , 20 and 40 gm. kg-1 and 0 , 1% , 2% and 4% fuel oil were used. Soil samples (0-5 cm deep) were collected from Baiji and treated with these materials . The materials added and the sunddunes were mixed thoroughly and pour in 2kg plastic pot. The pote were incubated for 90 days at 30 F 2o C at moisture content of soil of the field capacity of the sanddunes. Sanddunes treated samples were taken after the incubation the moisture control at 0 , 33 and 1500 kpa were determined. The mean weight diameter of aggregates , the percentage dry aggregate 0.84 mm, deaggregation and the time of dry sieving needed for complete deaggregation were measured. The parameters were measured to use as index for the materials added instabiliz and fixation the sunddunesThe results showed that materials added increased the sanddunes water retension at 0 , 33 and 150 kpa , also the availals water increased as rate application of materials increased.The corn cobs and the fuel oil application increased the mean diameter of aggregates , also the percentage of 0.84 mm aggregates. The materials added decreased both the deaggregation and the time of dry sieving for completed deaggreegation. The corn cobs was more effective than the fuel oil on the parameters that have been measured. The results of this study indicated that rates 2 and 4 kg-1 of corn cobs result in highly non erodible sanddunes evc under 12.5 m. sec-1 wind velocity . However the fuel oil did not show the same effect . The maximum effect of high rate of fuel oil was nearly equal that of lower rate of corn cobs application. The application of corn cobs in high rate with incubation can change completely the soilstructure through the aggregate of the sand dunes fine particles which become completely nonerosine for wind erosion. Hence the materials can be used to aggregate and stabilize of the sand dunes and make it non erodible and combact desentification. | ||
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