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Publications

NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.

2017

To document

Abstract

High-profile cases of exploitative labour practices have increased concerns over agricultural working conditions. However, it is unclear to what extent the public is willing to trade-off fair working conditions for higher prices. We implement a large-scale survey in Greece to uncover consumer preferences for a food labelling system that certifies fair working conditions for the workers employed in agricultural production. With our most conservative estimates, we find that consumers are willing to pay an average premium of 53 cents of a Euro per 500 g, 95 per cent CI [43.9, 62.3], for strawberries with fair labour certification. This result suggests that consumers do value the better treatment of workers in the agricultural sector. It also suggests that there is a current market failure, created by the asymmetry of information between consumers and producers, that can be the basis of discussion for alternative labelling schemes involving fair labour labels. We also tested a number of known biases associated with consumer behaviour or the contingent valuation method and found the positive willingness-topay result to be robust.

To document

Abstract

Few studies have reported findings on the use of Pochonia chlamydosporia for the management of plant-parasitic nematodes under field conditions. In this chapter we describe experiences of P. chlamydosporia application in temperate crops grown in the UK, Norway and Poland. To date, the fungus has been recovered from different endoparasitic nematodes from a range of locations across Europe. Pochonia chlamydosporia is an egg parasite as well as a saprophyte and plant endophyte and is primarily applied as a biological control agent to reduce nematode multiplication. In the UK, several field and micro-plot experiments have demonstrated that the fungus is capable of causing ca 50% reductions in the multiplication of Globodera pallida in potatoes. Further work was undertaken to evaluate the compatibility between P. chlamydosporia applications and the fungicide azoxystrobin which is used for managing the soil borne fungus Rhizoctonia solani. Although P. chlamydosporia is sensitive to azoxystrobin, there is evidence to suggest that it may not affect its efficacy as a biological control agent. In Norway, the fungus has been isolated from various cyst nematodes (Heterodera spp. and Globodera spp.), however, under in vitro conditions it was found to lose pathogenicity. Work undertaken in Poland has shown that strains of P. chlamydosporia can reduce populations of H. schachtii in sugar beet. Sugar beet grown in a 3 year rotation in combination with a mustard green manure increased egg parasitism by P. chlamydosporia in comparison to other treatments which included the addition of straw or manure. Further work is discussed on the ability of strains of P. chlamydosporia to parasitize eggs of Meloidogyne incognita, M. hapla and M. arenaria at a range of temperatures.