Development of useful integrated management package against sweet potato weevil.

Mohammad Monirul Hasan Tipu,Raunak Jahan,Md Mosiur Rahman Bhuyin Apu,Md Mizanur Rahman,Jubaidur Rahman,Md Ariful Islam

doi:10.31220/agrirxiv.2021.00031

Mohammad Monirul Hasan Tipu, Raunak Jahan + Show 4 more

Open Access

https://doi.org/10.31220/agrirxiv.2021.00031

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Abstract

Abstract The sweet potato weevil ( Cylas formicarius Fab.) is one of the most damaging sweet potato pests. To prevent an economic crop loss, it is very important to develop a suitable and efficient integrated pest management strategy. A field experiment was set up with three replications at Jamalpur to select the best-integrated management package from eight different treatments against sweet potato weevil. The result showed that the lowest percentage of infestation by number (2.94%) and weight (3.22%) was found when the crop was planted on November 01; earthing-up for two times, Carbofuran 5G was sprayed @ 15 kg/ha at 60 days after sowing with irrigation and tuber was harvested at 130 days after planting. The marketable yield (23.75 kg) and percent increase of yield than control (50.86%) performed highest in the same combination. These findings suggested an effective integration of different management strategies to reduce sweet potato weevil infestation in Bangladesh successfully.

Highlights

The Sweet potato weevil (SPW) (Cylas formicarius Fab.) has become widely dispersed, mainly in tropical and subtropical areas of the world (Hue and Low, 2015), and it recently has been found in higher latitude areas as well
The different integrated treatments were tested for evaluating the efficacy in controlling sweet potato weevil
The effects of all treatments combination on root infestation by sweet potato weevil were presented in table 1

Summary

Introduction

The sweet potato has an important role in transforming the nutrition and food security for developing countries significantly in recent years (Korada et al, 2010). Cultural practices have proven to be effective control against the sweet potato weevil, but insecticide applications remain the primary basis of control (Muruvanda et al, 1986;Sutherland, 1986). Management of this pest through the shifting of the planting dates could be one of the best ways. If it may be possible to harvest two weeks earlier, it may reduce the yield loss Another way of reducing the sweet potato weevil infestation is to hail-up of soil by re-ridging around the plant-base to fill soil cracks (Beyene, 2015). We designed the present study to select the best-integrated management package against sweet potato weevil for higher yield

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Conclusion