Southern Research Station

Title: Survey of phytophagous insects and foliar pathogens in China for a biocontrol perspective on kudzu, Pueraria montana var. lobata (Willd.) Maesen and S. Almeida (Fabaceae)

Author: Sun, Jiang-Hua; Liu, Zhu-Dong; Britton, Kerry O.; Cai, Ping; Orr, David; Hough-Goldstein, Judith

Date: 2006

Source: Biological Control, Vol. 36: 22-31

Description: A three-year survey of kudzu foliage, seed, stems, and roots for associated phytophagous insects was conducted to establish basic information about the insect communities that kudzu harbors in China and to assess the abundance, diversity and damage caused by these insects. Diseases of kudzu were also surveyed in southern China. A total of 116 phytophagous insect species in 3 1 families and 5 orders were collected from kudzu in China, in six feeding guilds: foliage, sap, stem, terminal, seed and root feeders. The impact of foliage feeders varied from site to site and year to year, and over the course of the growing season. The mean percent defoliation of kudzu over all plots and years was 13.3 f 1.9'!41, but ranged as high as 34%. Two insect species fed on shoots and clipped off terminals. Infestation of new shoots was high, with nearly half of all shoots clipped. Nearly half of the vines showed damage from stem borers, again varying through the season. Two species of insects attacked kudzu roots, mainly the cerambycid beetle Paraleprodera diophthulma (Pascoe), which caused considerable damage to both small (young, <3.4cm diameter) and large (older, >6 cm diameter) roots. Insects also caused substantial seed damage. Imitation rust, caused by Synclzytrium minutum [= S. puerariae ( P. Henning) Miyabe], was the most commonly observed disease of kudzu. Several of these species have potential as biological control agents for kudzu in the US.

Keywords: Feeding guilds, biological control, weeds, invasive species

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Citation

Sun, Jiang-Hua; Liu, Zhu-Dong; Britton, Kerry O.; Cai, Ping; Orr, David; Hough-Goldstein, Judith  2006.  Survey of phytophagous insects and foliar pathogens in China for a biocontrol perspective on kudzu, Pueraria montana var. lobata (Willd.) Maesen and S. Almeida (Fabaceae).   Biological Control, Vol. 36: 22-31