Show: 25 50 75 100 Results

Search results: 1 out of 1

تقيين القابلية التحولية للمفترس اسد المن Chrysoperla carnea Stephens لبعض المبيدات الحشرية وقابلية هذه المبيدات في مكافحة دودة جوز القطن الشوكية Earias insulana Boisd == Evaluation the tolerance of Chysoperla ssp ageinst some insecticides used for controlling of Earias insulana (Boisd)

Author name: صابرين احمد محمد ال غريب
Supervisor name: نهاد كاظم خلف التميمي
General topic: Agricultural sciences
Specific topic: Plant - Prevention
Degree: Master
University: Al-Muthanna University - Faculty Of Agriculture - Department Of Soil Sciences And Water Resources
Language: Arabic
University location: Muthanna
First pages:
Abstract: This study was conducted to evaluate five insecticides (Neemix 4.5 EC , Cypermethrin 10% , Abamectin 1.8 EC , Quality %5 EC , control 500 EC) at laboratory conditions (1±28 cº and humidity % 65±5) on the third larval stage for the Earias insulana (Boisd ) and effect of these insecticides on Chrysoperla carnea (egg , larval , pupa and adult ) by using three concentrations : 0.25 , 0.5 and 1 (ml˖L - ¹) . Results indicuted all examined insecticides showed good activity against the larva of the E. insulana , mortality was 80.00 , 90.00 % for the larval in concentration 0.25 (ml˖L - ¹) while reach 83.33 - 100.00 % in concentrated 0.5 (ml˖L - ¹ ( while concentration 1( ml˖L - ¹) it achieved mortality %100 for all used insecticides after 72 hours from treatment .Also the recently study showed that insecticide effected on the eggs of C.carnea when insecticide used at 0.25(ml˖L - ¹) achieved mortality 22.67, 40.67% while at concentration 0.5 (ml˖L - ¹) the mortality of insecticide between 42.67 - 56.67% while in concentration 1 (ml˖L - ¹) reached 50.00 ,61.33 % . Results of the study showed that Quality insecticide was tow effect on the eggs of C .carnea at 0.25( ml˖L - ¹) , mortality reached 22,67 % while the other insecticide showed ligh effect at the same concentration . However at 0.5(ml˖L - ¹) insecticide the effect of the two insecticide (Quality and Control ) on the eggs was two harm which achieved mortality less than 50 % while the effect of other insecticide at same concentration showed the midl harm effect and mortality 53.33, 56.67 and 51.33 for the Neemix , cypermethrin 10% and Abamectin respectively . finally in 1 (ml˖L - ¹) the effect of Quality two effect but the other insecticide is middle harm.As the study result has confirmed the difference the effect of the examined insecticide on the C. camea larval within each Neemix and cypermethrin have showed the light harm effect to on first stage of larva C. camea and mortality reach 40.00% in the concentration 0.25 (ml˖L - ¹) but the other insecticide has showed the middle harm effects for the larval first stage and achieved mortality 56.67 - 66.67% in the concentration 0.25(ml˖L - ¹). .Results showed that the concentration 0.5 (ml˖L - ¹) for Neemix , CyPermethrin %10 and Quality achieved moderate effect on first stage of larva that caused mortality 53.33 - 70.00 % , However the effect of insecticide Control and Abamectin were high harm and achieved mortality more than 76% in concentration 0.5(ml˖L - ¹).Neemix , cypermethrin 10% have achieved modrate effect to the first stage of larva for the C. camea in 1 (ml˖L - ¹) concentration mortality 73.33% and 70.00% frequently but the other insecticides effected in highly effected in concentration 1 (ml˖L - ¹) and achieved mortality between 83.33 - 90.00% . The effect of insecticides on the second stage larva showed the result the Cypermethrin 10% was harmless for the second stage larva and achieved mortality reached 23.33% in concentration 0.25 (ml˖L - ¹)as compared with the other insecticides that were light harm for the second stage and achieved mortality between 26.67 - 33.33 % in the same concentration. While in the two concentrations 0.5 and 1 (ml˖L - ¹) the used insecticides were light harm on the second stage larva within achieved mortality between 30.00 - 50.00%. In the same time the third stage larva for the C.camea recognized by a big tolerance for the used insecticides which they were harmless and record mortality less 25% in the two concentrations 0.25 and 0.5 (ml˖L - ¹) while in concentration 1 (ml˖L - ¹) the effect of Control and Abamectin insecticides were light harm that record mortality reached 26%, in the other side the effect of the other insecticides were harmless in this concentration. The effect the insecticides on the C.camea pupas, the results showed mortality in concentration 0.25 (ml˖L - ¹) between 0.00 - 26.66% during the treatment by the insecticides but mortality reached 3.33 - 43.33% in concentration 0.5(ml˖L - ¹) while in 1(ml˖L - ¹) it was between 20.00 - 56.66% .The results revealed that the Control insecticide was more effective to the adults (males and females ) mortality between 83.33 - 100.00% for the concentration 0.25 - 1 (ml˖L - ¹) , the other insecticides have affected in difference on the adults , mortality with the treatment by the Quality and Abamectin reached 66.67% and 53.33% in concentration 0.25 (ml˖L - ¹) but mortality of the females 10.00% and 20.00% with treatment of Quality and Abamectin in the same concentration frequently , Each increase in the concentration lead to increasing in the mortality reached C100% for the Quality insecticide in concentration 1(ml˖L - ¹) .Results showed that Neemix and Cypermethin achieved the mortality for the male in concentration 0.25,0.5 and 1 (ml˖L - ¹) between 30.00 - 86.67 % and for the females 0.00 - 60.00% for the treatment of Neemix and reached 33.33 - 76.67 % for the treatment of Cypermethrin%10