Impact of basamide and methomyl bait on non target pests and some microbiological processes in soil [electronic resource].

Includes references.

Impact of Basamide and its active ingredient dazomet standard as well as 2% methomyl bait on non- target pests inhabiting soil was assessed. Also, the effect of the treatments on nitrite- nitrogen formation and dehydrogenase activity in a sandy loam soil was evaluated. The obtained results could be summarized as follows: 1) There is a significant difference between Basamid formulation and its active ingredient dazomet standard on NO₂- N formation in soil. The two treatments appeared to decrease this nitrogenous form where the obtained average values were 4.73 and 5.33 ppm with Basamide and dazomet respectively, while the value of check treatment was 42.24 ppm. The highest effect was appeared after 12 days of application. 2) Dehydrogenase activity was highly reduced by Basamide and dazomet standard treatments where the activity % values were 56.37 and 42.64 respectively. These values show that dazomet treatment was more effective as inhibitor than that occurred by the commercial compound. The highest decreasing activity (31.38%) appeared after 3 days of assay. 3) Basamide compound had an appreciable effect on certain helicide gastropods; Eobania vermicu/ata, Theba pisana and He/icella vesta/is .The mortality % values were 100.0, 100.0 and 97.0 respectively, after the period of 5 days of soil treatment. These values indicate that Basamide treatment was more efficient against land molluscs than that obtained by 2% methomyl bait which known as molluscicide. 4) Basamide at recommended rate, 1/2 fold recommended rate and 1.5 - fold recommended rate was effective against both the Mediterranean fruit fly and the cotton leaf worm larvae. Also, this compound was effective to kill pupal stages emerged from larval stages. The total killing effect was increased as the rate of application increased.

Summary in Arabic.

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