Effect of the redonticide Symag (Sodium cyanid) on Nesokia indica

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Abstract

According to the extent of damage to the crops and irrigation canals the Nesokia indica is ‎one of the most important rodent pests in Iran. Cymag is a registered product in the country to ‎control Citellus fulvus and large amount of it is available at present. With the aim of studying ‎the effect of it on the N. indica experiments were conducted under field conditions in Tehran ‎and Kerman Provinces. The experiments were performed in a completely randomized block ‎design in four replicates with two experimental and one control block with the extend of about ‎‎500 square meters each. The treatment blocks included 2-8 g Cymag/complex burrow (based on ‎the average volume of the burrows), and 1-2 Phostoxin tablets/complex burrow, and the third ‎block was the control without any rodenticide. Percentage success was estimated using ‎Henderson and Tilton (1955) formula. The results show the success of about 98 and 96.4 percent ‎using Cymag and 88.5 and 89.5 percent using Phostoxin tablets in Tehran and Kerman ‎provinces respectively. Higher efficacy observed in Tehran province could be due to higher ‎moisture present in the soil of this province. Since Cymag is highly toxic, it must be used by ‎trained personnel and farmers using suitable safety measures.‎

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