Snap bean is an important crop in the United States. Insecticides are commonly used against pests on snap bean, but many pests have developed resistance to the insecticides and beneficials are threatened by the insecticides. Therefore, host plant resistance is a sustainable alternative. Population dynamics of insect pests and beneficials were assessed on 24 snap bean cultivars every week for six weeks. The lowest number of sweetpotato whitefly () eggs was observed on cultivar 'Jade', and the fewest nymphs were found on cultivars 'Gold Mine', 'Golden Rod', 'Long Tendergreen', and 'Royal Burgundy'. The numbers of potato leafhopper () and tarnished plant bug () adults were the lowest on cultivars 'Greencrop' and 'PV-857'. The highest numbers of adults were found in Week 1 (25 days following plant emergence) for and Mexican bean beetle (); Week 3 for cucumber beetle, kudzu bug (), and ; Weeks 3 and 4 for thrips; Week 4 for ; and Weeks 5 and 6 for bees. Temperature and relative humidity correlated with , , bee, and predator ladybird beetle populations. These results provide valuable information on the integrated pest management of snap beans.
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| http://dx.doi.org/10.3390/insects14030230 | DOI Listing |
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