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Preliminary Observations on Rat Damage to Rice Varieties
Comparative Study of Populations of Rattus rattus
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acrocentric acute toxicants animals anticoagulant bait average bait acceptance barrios booting rice breeding Bureau of Plant burrows Cabuyao census Central Luzon coconut oil College of Agriculture Colorado State University conducted control methods Cotabato cut by rats cut tillers Denver Wildlife Research determine dry season exposed farmers females field gavage growing rice H H H habitat harvest hectare in—paddy indicated laboratory Laguna litters live—traps located Luzon materials mature rice National Damage Survey nights Nueva Ecija observations paddy dikes Philippines Plant Industry plots polished rice pre—baited pregnant provinces rat activity rat damage rat populations Rattus argentiventer Rattus rattus mindanensis reduced ricefield rat rodent populations Rodent Research Center rodenticides samples Siniloan snap-traps South Vietnam species stations Sumangil Table Tarlac tests tillers cut tracking tiles trap success treated bait trials uncultivated UPCA USAID warfarin weeks after transplanting wet season Wildlife Research Center zinc phosphide bait