Survey of northeastern hop arthropod pests and their natural enemies

The commercial production of hops (Humulus lupulus L.) in the northeastern United States is on the rise due to demand from local breweries. Several arthropod pests are economically damaging to hop yield and quality. Due to climate and landscape differences between traditional and resurging hop-growing regions, there is a need for region-specific integrated pest management (IPM). We first review hop pest and natural enemy biology and management strategies. Then the phenology, abundance, and peak date of arthropod pests scouted in seven Vermont hop yards is reported. Documentation of natural enemy abundance is also reported. Our 3-yr survey indicated that hop aphid (Phorodon humuli (Schrank)) populations were highest in the continually cool, wet season. Potato leafhopper (Empoasca fabae (Harris)) was a pest with an unpredictable arrival date and of special concern for first-year hop plants. Twospotted spider mite (Tetranychus urticae Koch) was a pest of concern in hot, dry conditions and after some broad-spectrum pesticide applications aimed at leafhoppers. This survey was the first step toward developing appropriate IPM tactics for modern day northeastern hop production. Further research should be focused on adjusting arthropod pest thresholds, disease management, and developing alternative control options for both arthropod and disease management

Tradeoffs of a rising agroecological practice: addressing uncertainty around tarping with participatory action research and mixed methods

Transitioning to more sustainable agricultural practices is a key goal in agroecology. Before practices are adopted, however, farmers must weigh a complex set of biophysical and socioeconomic tradeoffs. Tarping is a weed control practice gaining popularity in New England, but many of its biophysical impacts remain unclear to farmers. Here, we used participatory action research to engage in mutual learning with farmers around the tradeoffs of tarping for weed control. We collected quantitative biophysical data with a field study and qualitative data on biophysical and socioeconomic factors by interviewing farmers. We found tarping has a number of benefits, challenges, and uncertainties, though most farmers had positive overall perceptions of the practice. Many of our biophysical results matched farmers’ experiences, including that tarping dramatically heated soils, suppressed weeds, and increased crop yields. However, our mixed results for the effects of tarping on soil nitrate contrasted farmers’ perception that tarping increases soil nitrate availability. Engaging in participatory and mixed methods research was an effective approach to unveil complex tradeoffs around tarping and ensure our research was relevant to farmer interests. Future research on long-term effects of tarps will be valuable to inform the sustainability of this practice.</p

Doing well or doing good? Extrinsic and intrinsic CSR in Switzerland

Arguably, within Corporate Social Responsibility (CSR) the intrinsic motive is more significant than the extrinsic because the former induces a stronger involvement. Others showed that a behaviour attributed to extrinsic motives is mostly perceived as dishonest and misleading. This highlights how important the underlying motivation is for the perception, and thus, design and effectiveness of CSR frameworks. This study discusses these divergent motives with two focus groups: together with seven owner-managers of Small and Medium-sized Enterprises (SME) and seven managers of large companies. The results show that CSR implementation in Swiss SMEs is related more strongly to moral commitment than to profit-maximisation. Accordingly, small business CSR emerges from the nexus of mission and value-set and the sociological tradition of the stewardship concept. This contrasts the extrinsically motivated approach of the large companies under research. In sum, this study showed that CSR is meaningful and justifiable even if it is not profitable in the first place