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Hot spot area analysis of onion armyworm outbreak in Nueva Ecija using geographic information system

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Abstract

Onion is one of the high-value crops in the Philippines and Nueva Ecija is the leading onion producer in the country. Though onion is one of the most profitable high-value crops, it is very susceptible to armyworm infestations resulting in huge income loss to the farmers. To avoid losses in the future and expedite assistance by the government in the heavily infested areas, the pattern, spatial information and mapping of armyworm infestation and damage are information of vital importance. However, its importance is still far from realization by the farmers and decision makers, which at present are still depending on the traditional methods of estimating losses in yield/ha basis. Geographic Information System is the most advanced technology used in resources mapping which could also use in identifying heavily infested area through “Hot Spot Analysis”. Hotspot analysis was conducted in this study to identify the spatial pattern and possible sources of armyworm infestation outbreaks. The result shows that the onion area of San Jose was classified as the highest hot spot area of armyworm infestation. On the other hand, the onion areas in the municipalities of Cuyapo, Guimba, San Leonardo, Rizal, General Natividad, Laur, and Bongabon, were also found to be high hot spot areas of infestation, though in moderate scale of damage. The municipalities of Lupao, Munoz, Gabaldon, Santo Domingo, Talavera, Quezon, and Aliaga, were found to be at very low to moderate hotspot status. GIS was proven to be effective in generating hot spot maps of armyworm based on the levels of infestation in the onion areas of Nueva Ecija.

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Acknowledgements

This research is an output of the DA-BAR funded research project “Detection, Spatial Tracking, Damage and Yield Assessment and Mapping of Disease and Armyworm Infestations of Onion Using Remote Sensing Technology. We are grateful to the Department of Agriculture---Bureau of Agricultural Research (DA-BAR) for the financial support.

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Authors and Affiliations

  1. College of Agriculture, Central Luzon State University, 3120, Science City of Muñoz, Nueva Ecija, Philippines

    R. T. Alberto

  2. Institute for Climate Change and Environmental Management, Central Luzon State University, 3120, Science City of Muñoz, Nueva Ecija, Philippines

    A. R. Biagtan, M. F. Isip & R. C. Tagaca

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  1. R. T. Alberto
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  2. A. R. Biagtan
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  3. M. F. Isip
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  4. R. C. Tagaca
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Correspondence to A. R. Biagtan.

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Alberto, R.T., Biagtan, A.R., Isip, M.F. et al. Hot spot area analysis of onion armyworm outbreak in Nueva Ecija using geographic information system. Spat. Inf. Res. 27, 673–680 (2019). https://doi.org/10.1007/s41324-019-00266-0

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  • DOI: https://doi.org/10.1007/s41324-019-00266-0

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