HAIRY FLEABANE AS A SOURCE OF MAJOR INSECT PESTS OF SOYBEAN

Planta Daninha

CAGLIARI, D.¹  CURIOLETTI, L.E.¹  STACKE, R.F.¹  GUEDES, J.V.C.¹  Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil¹  DALAZEN, G.¹  Universidade Federal de Santa Maria, Santa Maria, Brazil¹ 

关键词: words: soybean pests;    integrated pest management;    weeds;    Conyza bonariensis;   

DOI  :  10.1590/S0100-83582016340300001

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

Weeds compete with crops for essential inputs, but they are also important hosts for pests, both during the crop and between crops. Hairy fleabane (Conyza bonariensis) is an important weed growing in both summer and winter crops. The aim of this study was to evaluate the occurrence and population fluctuations of soybean pests using hairy fleabane as an alternative host. Samples of hairy fleabane plants were collected fortnightly over twelve months at two sites (Boa Vista do Incra and São Vicente do Sul) in Rio Grande do Sul state, Brazil. The results showed that hairy fleabane plants provided shelter to important soybean pests, including the pentatomid stink bugs Edessa meditabunda, Piezodorus guildinii, Dichelop sp. and Euschistus heros, especially after soybean maturation, and also served as an alternative food source. This weedy species was also an important alternative host for caterpillars such as Anticarsia gemmatalis, Chrysodeixis includens, Spodoptera spp. and Helicoverpa gelotopoeon.

【 授权许可】

Unknown