This research aimed to study the possibility of using a digital
camera in estimating soil color and compare it with Munsell soil
color chart, and then study the correlation between soil color as
important classification properties and soil content of organic
matter, soil content of total carbonate and soil Texture.
Adopting of drink water conditions needs sterilization from the resource. There are many used matter to sterilize, but the most use is by Chloride, so it is necessary to obtain solutions because of continuous damages due to sterilization operation.
The water sterilization by chloride may create secondary compounds in water, which are very dangerous. Those compounds are as Trihalomethanes (THMs) which cause crabs. Therefore, we researched the sterilization by chloride in comparison with other ways. In addition, we get rid off hydro carbonates from sterilized drink water samples, which were obtained from different resources, drink water, natural water and dames using the activated carbon to get rid off venole and humic acids not to interact with chloride and cause people cansers.
This paper aims at investigating the effect of organic matter
content on the engineering properties of the soil.
The effect of the organic matter on both the consistency limits and strength have been investigated. The results show that the organic
matter increases both the plasticity and the strength of soil.
Mathematical formula is presented in which the unconfined
compression strength of the soil is related to the organic matter
content. It was concluded that increasing the organic matter
content increases the displacement corresponding to the maximum shear stress. In addition, the effect of the organic matter has been studied and the results show that the organic matter increases the compressibility of the soil.
Stabilizing the soil with cement has been investigated as well. The
results show that adding the cement to the soil improves the
strength of the soil and decreases its swelling potential.
Depending on the organic matter content, a mathematical formula
is presented to determine the required cement ratio to treat the
soil to decrease its swelling potential.
The reasearch was carried out during 2009 – 2010 in Al – Hasaka – Amoda - to study
the effect of cattle manure at the rat of 30 ton / ha , and four organic green manure ( Lentil,
Vetch, Faba bean and Barely) on soil content of organic matter and so
me mineral elements
compared with chemical fertilizer 400 kg / ha urea , 83 kg / ha P2O5 and 25 kg / ha K2O .
The manure significantly increased organic matter , phosphorus and potassium
concentrations compared with other fertilizers ( chemical and green fertilizers ) . All green
fertilizers ( Lentil , Vetch , Faba bean and Barely ) significantly increased organic matter ,
nitrogen and potassium concentration compared with the control without using any
fertilizer , the tillage depth ( 0 – 10 ) cm significantly increased soil content of organic
matter and nitrogen compared with deeper tillage ( 25 – 30 ) cm during the two seasons .
