A Comparative Study to Measure the Insecticides Diazinon and Vapona ( Nogos ) on Some Soil Fungi in Vitro
Al-Qadisiyah Journal For Agriculture Sciences,
2013, Volume 3, Issue 1, Pages 101-114
AbstractFour fungi ,have been isolated from the rhizosphere of Viccia faba in the AL-Qadisiya District fields , were selected for their variable resistance to toxic insecticide Diazinon at the range of ( 0.2 , 0.4 and 0.6 )ppm concentration where the ( 0.6 ) ppm concentration represents to the initial concentration in the field soil . Another Nogos insecticide have been Studied at the range of ( 0.1, 0.3 and 0.5 ) ppm concentration where the (0.5) ppm concentration represents the initial concentration in the field soil . These fungi were Aspergillus niger , Rhizopus stolinifer ( high tolerance ) , Trichoderma harzianum ( moderate tolerance ) , Fusarium solani ( Low tolerance ) .
The inhibition percent age of T. harzianum reaches to ( 18.8%) , ( 16.6%) with Diazinon on solid media in ( 0.2 and 0.4 ) ppm concentration , but the inhibition percent age of Fusarium solani reaches to ( 22.2 %) , ( 11.1%)
In ( 0.4 and 0.6 ) ppm concentration .
The inhibition percent of T.harzianum reaches to ( 28.8%) with insecticide Vapona ( Nogos ) on solid media in ( 0.5 ) ppm concentration , but the the inhibition percent age of F.solani reaches to ( 45.5% ) in ( 0.5 ) ppm concentration and ( 36.6% ), ( 46.6 %) in ( 0.1 and 0.3 ) ppm concentration . The results have shown that A.niger , R. stolinifer and T. harzianum are able to convert these insecticide to other compounds in laboratory , but F. solani dose not convert these insecticides .
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