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Environment science lab soil planning lab

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Research Question:- Does pollution emitted by vehicular traffic effect the texture, water content and pH of the soil alongside a busy road? Hypothesis:- Due to automobile movement on Sohna Road the texture, ph and the water content of soil maybe different. The soil samples are taken 1 metre, 2 metre and 3 metre from the road. According to me the texture, ph and the water content will be different because the soil that is present 1 metre away from road will be getting most affected because automobile movement will be the highest at 1 metre distance from the road other than 2 metre or 3 metre. The soil will be most affected on 1 meter because of the heat emitted by the vehicles. This will make the soil dry at 1 metre. Vehicles on the road enter the soil present at 1 metre because of no embarkments present on the road. Because of this the soil gets disturbed. The water content might be low at 1 metre distance from the road because the automobile movement will be high and therefore the texture and ph and water content will be getting changed from time to time. The soil samples taken from 2metre will have different texture and the water content might be more because the soil there is not getting more affected than the soil present at 1 metre. ...read more.


Weigh all three Crucible dish while still empty. Record the mass (a). 2) Add a broken-up soil sample to the dish and weigh. Record the mass (b). 3) Do step 2 for 2m and 3m soil also. 4) Place the dishes with the soil sample in the oven at 110oC for 24 hrs. 5) Remove the soil samples from the oven and cool in a desiccator. 6) Weigh the samples when cool and record the mass. 7) Return the sample to the oven at 1100C for a further 24 hrs. 8) Repeat stages 4 and 5 until consistent weighing are recorded (Constant mass). Record the mass (c). 9) Calculate the percentage water content as follows: Observations: Data Collection Table 1 : Ph of the soil samples taken from 1m,2m , 3m. Distance of soil samples taken/m �0.1 ph colour 1 8.5 Green 2 8.5 Green 3 9 Dark Green Table 2: Soil texture of all the soil samples: Distance/m �0.1 First layer/cm �0.1 Second layer/cm �0.1 Third layer/cm �0.1 1 20 50 55 2 60 22 ------ 3 35 33 ------ When soil is added in measuring cylinder and water is added and it is shaken. The level seen in the measuring cylinder was 400 ml. After 48 hrs the level was 300 ml. This is because the air in between the soil particles is replaced by the water and thus the level decreases. ...read more.


Conclusion: My analysis does not support the hypothesis. The pH is almost the same at every level. The ph is basic as mentioned in the hypothesis. The soil texture hypothesis is proved right as the texture of the soil is different in all cases. The water content of soil is high at close distance and very low at distance from sohna road . The soil sample near to the road has more ability to hold moisture because of the fine soil particles as compared to the coarse sandy soil which has better aeration but poor water holding capacity. Errors and Improvements:- 1) The pH of the soil samples taken is not appropriate. Only one reading of each soil sample has been taken which is not appropriate. 2) At least five reading of each soil sample could have been taken. 3) The Temperature in those 3 areas from where the soil sample was taken could have been measured. 4) The Time taken to conduct the experiment should not have been much because of the air would dry the loose soil and thus appropriate readings will not come. 5) Light intensity could have been measured on all the three places from where the soil sample was taken because light is directly proportional to heat. 6) In the experiment to check for texture after 48 hrs the soil was not shaken well and the soil profile was not in a straight line so the readings were difficult to take. ?? ?? ?? ?? Vikas Dhaka 2279-028 Page 1 of 12 ...read more.

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