Density and Seasonal Dynamics of Bemisia tabaci(Gennadius) Mediterranean on Common Crops and Weeds Around Cotton Fields in Northern China

作     者：ZHANG Xiao-ming YANG Nian-wan WAN Fang-hao Gabor L Lvei 

作者机构：State Key Laboratory for Biology of Plant Diseases and Insect PestsInstitute of Plant ProtectionChinese Academy of Agricultural Sciences Department of AgroecologyAarhus UniversityFlakkebjerg Research Centre DK-4200 SlagelseDenmark 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2014年第13卷第10期

页      面：2211-2220页

核心收录：

学科分类：09[农学] 0904[农学-植物保护] 090402[农学-农业昆虫与害虫防治] 

基　　金：funded by grants from the National Natural Science Foundation of China(30930062) the National Basic Research Program of China(2013CB127605) the CABI Special Fund for the Agricultural Industry(20130302404,201303019-02) 

主　　题：Bemisia tabaci whitefly cotton sunflower ragweed population dynamics seasonal dynamics quartile method 

摘      要：The density seasonal dynamics of Bemisia tabaci MED were evaluated over two years in a cotton-growing area in Langfang, Hebei Province, northern China on cotton （Gossypium hirsutum L.） and six other co-occurring common plants, common ragweed （Ambrosia artemisiifolia L.）, piemarker （Abutilon theophrasti Medicus）, sunflower （Helianthus annuus L.）, sweet potato （Ipomoea batatas L.）, soybean （Glycine max L.）, and maize （Zea mays L.）. The whitefly species identity was repeatedly tested and confirmed; seasonal dynamics on the various host plants were standardized by the quartile method. B. tabaci MED appeared on weeds （the common ragweed and piemarker） about 10 days earlier than on cotton, or the other cultivated plants. The peak population densities were observed over a span of 2 to 3 weeks on cotton, starting in early （2010） or mid-August （2011）. The common ragweed growing adjacent to cotton supported the highest B. tabaci densities （no. on 100 cm2 leaf surface）, 12-22 fold higher than on cotton itself. Sunflower supported more B. tabaci than the other plants, and about 1.5-2 fold higher than cotton did, Our results indicate that weeds （esp. the common ragweed） around cotton fields could increase the population density of B. tabaci MED on cotton, while sunflower could act as a trap crop for decreasing pest pressure on cotton.