Abstract

Crown baiting with bromodiolone 0.005 per cent ready made rodenticide cake @ four bits,weighing 16.5 g each at the base of the four bunches bearing the tender nuts of fist size and aboveon four sides in the crown of palm was found very effective in controlling rodent damage.

Highlights

  • Coconut palm is attacked by a number of insect and non insect pests, of which rodents are considered more serious among the non insects

  • The ready - to - use rodenticide cake bits were placed on the upper base of the bunches bearing the tender nuts in the palm crown

  • Application of bromadiolone 0.005 per cent ready made rodenticide cake @ four bits each weighing 16.5 g per palm kept in the palm crown significantly controlled rodent damage in lender nuts of fist size and above (Table 1)

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Summary

INTRODUCTION

Coconut palm is attacked by a number of insect and non insect pests, of which rodents are considered more serious among the non insects. The rodents attack the standing crops almost at every stage in the field. Coconut being a perennial crop, provides a regular and abundant food and water supply to rodents throughout the year. Funambulus palmarum Linn are common ones responsible for the heavy nut shedding due to their attack in Tamil Nadu. Three to six months old tender nuts were preferred by the rodents. As high as 77 per cent damage on tender nuts was noticed in Gilbert and Ellice islands (Smith 1970). An in vivo experiment was laid out at Coconut Research Station, Tamil Nadu Agricultural University, Veppankulam, during 1991 '92, with single d0se rodenticides to evolve an effective chemical control method for rodents.!

MATERIALS AND METHODS
RESULTS AND DISCUSSION
CONCLUSION

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