期刊
AGRICULTURAL AND FOREST ENTOMOLOGY
卷 4, 期 2, 页码 101-107出版社
WILEY-BLACKWELL
DOI: 10.1046/j.1461-9563.2002.00130.x
关键词
Green vegetable bug; IPM; mustard; New Zealand; Nezara viridula; southern green stink bug; sweet corn; trap crop; pea
类别
资金
- Foundation for Research, Science and Technology
- Heinz Wattie's Australasia
1 The use of trap crops to reduce green vegetable bug (GVB) Nezara viridula (L.) (Heteroptera: Pentatomidae) damage to process sweet corn Zea mays (L.) was investigated in three field experiments. 2 In the first season, small plots (2.7 m by 10 m) of white mustard Sinapis alba (L.) with pea Pisum sativum (L.) were sown along a crop border and compared with sweet corn alone. 3 In the second season, black mustard Brassica nigra (L.) was sown at two sowing dates (14 days apart) and compared with a sweet corn control, to examine how the maturity of the trap crop affected numbers of GVB trapped. 4 A field scale experiment was also conducted to determine the effectiveness of black mustard as a trap crop to protect larger areas of sweet corn from GVB. 5 In all three experiments, GVB populations were much higher on the trap crops compared with the sweet corn. 6 In both small plot experiments, GVB were contained largely within the trap crop for 2 weeks until the sweet corn was harvested. 7 The field scale experiment demonstrated the efficacy of the trap cropping technique to protect larger areas of crop from GVB. 8 Percentages of damaged sweet corn cobs in the outside row of fields protected by a trap crop were 0% and 1%, respectively, compared with 11% and 22% in control fields. 9 Trap cropping is recommended as an effective strategy to manage this insect. Options for cultivating or spraying the trap crops to reduce bug survival are discussed.
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