Astudy of thermal degradation kinetics on the biological activity of actellic in controlling of aphids ( Myzus persicae) on cucumber

Several experiments were conducted at Al – Ramadi distinct / Al – Anbar province, Iraq in 2007 to investigate effect of thermal degradation kinetics of actellic (2-Diethylamino-6-methylprimidin-4-yl-dimethyl phosphorothionate) on the biological activity in controlling of aphids ( Myzus persicae) on cucumber . The insecticide was exposed to six tempertures levels in the laboratory ( 0 , 5 , 10 , 20 , 40 and 60 C˚ ) for five exposal periods ( 1 , 2 , 4 , 6 and 8 h ) before field application in infestation % of aphids and productivity of cucumber were estimated . Resulte showed that actellic activity was decreased at ( 0 C˚) with increasing exposing tempertures where as infestation % was ( 27 % ) at ( 60 C˚) , up to ( 10 % ) at ( 0 C˚ ) lead to decrease productivity of plant with increasing temperatures . The higher average obtained under ( 5 C˚ ) was ( 3347kg / D ) , While it decreased at ( 60 C˚ ) of ( 2815 kg / D ) . The results showed that thermal degradation of actellic which measured by ion phosphorus increased while pH reduced by increasing temperature. The kinetic studies indicated that the rate of reaction is of the first order by drawing the relation between Ln ( Po / Pt ) with time of temperature which showed a linear relation, Dissociation pesticide actellic. Thermodynamic functions actellic degradation calculated such as ( Activation Energy, Enthalpy , Entropy , Gibbs function ) Which is highly effect by temperature

THE IMPACT OF UNDERGRAUND WATERS AND SULPHIDE WATERS ON THE PROPERTIES OF EUPHRATES FROM SYRIAN BORDERS TO HEET IN ANBAR GOVERNORATE

The area of study starts from the entrance of Euphrates river at the Iraqi Syrian boarder line to Heet city. It involves the influence of springs and underground waters along the river stream on water quality. Physical and Chemical properties of Underground water wells on Kaim city , springs of Hijlan and sulphide springs of Heet city have been studied. The study reveals that the water of the river not affected by underground water wells on Kaim city. Springs of Hijlan and sulphide springs of Heet city caused a clear differences in Physical and Chemical properties of Euphrates river in addition to increasing concentration of some important trace elements (Cr and Pb)