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http://dx.doi.org/10.5656/KSAE.2020.11.0.066

Rice Grain Damage by Paromius exiguus (Distant)(Heteroptera: Lygaeidae) in Rice Fields  

Seo, Bo Yoon (Crop protection Division, Department of Agro-food Safety and Crop Protection, National Institute of Agricultural Sciences, RDA)
Cho, Jum Rae (Crop protection Division, Department of Agro-food Safety and Crop Protection, National Institute of Agricultural Sciences, RDA)
Lee, Si-Woo (Department of Industrial Entomology, Korea National College of Agriculture and Fisheries)
Kim, Hey-Kyung (Department of Industrial Entomology, Korea National College of Agriculture and Fisheries)
Park, Chang-Gyu (Department of Industrial Entomology, Korea National College of Agriculture and Fisheries)
Publication Information
Korean journal of applied entomology / v.59, no.4, 2020 , pp. 455-460 More about this Journal
Abstract
Rice grain damage caused by Paromius exiguus under various conditions in paddy fields was analyzed. One nymph of P. exiguus caused 2.7 pecky grains in brown rice in one day, and sixteen nymphs caused 132.3 pecky grains over sixteen days. The relationship between the inoculated nymphal density and the number of pecky grains was well described by a linear regression (Y = 8.8446X, r2 = 0.9622). When a pair of P. exiguus adults was inoculated in the heading stage of rice, the damage at the time of harvesting consisted of 40.2% of cracked rice and 30.5% of pecky rice among whole rice grains. Inoculation of 16 pairs resulted in 81.7% of cracked rice and 74.5% of pecky rice. The damage analysis indicated that the quantity of ripened rice decreased as the damage started earlier in the heading stage of rice. On the contrary, the proportion of cracked and pecky rice rapidly increased from the heading time until 28 days after heading of the rice grains.
Keywords
Paromius exiguus; Rice; Damage; Percentage of ripened rice; Percentage of pecky rice;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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