| an injury equivalency system for establishing a common economic threshold for three species of rice planthoppers (hemiptera: delphacidae) in taiwan. | the economic threshold (et) for multiple pest species that share the same injury type on host plants (feeding guild) has been proposed for decision-making in integrated management framework of many defoliating insect pests. however, only a few consider agricultural pests with sucking mouthparts. this study presents the first injury equivalency system for the feeding guild made up of three rice (oryza sativa l.) planthopper (hemiptera: delphacidae) species--nilaparvata lugens (stål), sogatella fu ... | 2013 | 23786072 |