Flood Damage on Agricultural Land and Methods for Restoration of Agricultural Soils after Catastrophic Floods in Cold Areas

Catastrophic floods have large effect on agricultural land both in short and long term. In this chapter, examples of impact of floods of different size in cold regions with glaziers have been presented. The largest floods occur as combination of heavy rainfall and melting and snow and ice in the mountainous areas. Periods of waterlogging by cold running water resulted in decreased yields, but N-fertilization after the soil no longer was water saturated could reduce the yield loss considerably. Although the floods cause severe erosion and sedimentation, results show that it is possible to find measures for reconstruction of the soils with the same productivity as undamaged soils, while the average result was about 85% of the original productivity

Soil and plant selection for rain gardens along streets and roads in cold climates: Simulated cyclic flooding and real-scale studies of five herbaceous perennial species

This paper presents results from a container experiment and a real-scale study in road environments for evaluating the performance of soil mixtures and herbaceous perennials for use in rain gardens. The container experiment included 12 soil mixtures and 4 perennial species. The plants were exposed to three flooding events and one drought period, and their overall vitality was recorded after the floodings. The containers were stored outdoors the following winter and plant survival was observed in spring. Amsonia orientalis did not survive the winter after being exposed to flooding in the growing season and was replaced by Hosta ‘Francee’ in the real-scale study, which was established in Drammen (Norway) in a soil mixture based on optimisation of the best mixtures in the container experiment. Luzula sylvatica performed well in the container study and survived the winter; however, in the field study, individuals of this species that were located close to the road died due to de-icing salt. Eurybia divaricata showed some mortality in both studies, and total mortality occurred in individuals that were close to the road, due to de-icing salt. Hemerocallis cvv. performed well in both experiments and appeared to be useful in all rain garden positions in the cold climate road environment. H. ‘Francee’ developed well in the road environment, except when exposed to splashes of road water. The study highlights considerable differences between species’ adaption to roadside rain gardens in cold climates, and the need for further field investigations.publishedVersio

Utbygging på Hagejordet i Lillehammer. Undersøkelser av jordegenskaper og plan for reetablering av jordbruksareal.

I denne rapporten er det redegjort for hvordan jord fra utbygging av Hagejordet i Lillehammer kan benyttes til reetablering av jordbruksareal på andre gårdsbruk. Det er funnet aktuelle og egnede mottaksareal for jord på gårdene Bakke og Roverud, som er innenfor en transportavstand på 3 km sør for Hagejordet. Det er funnet mottaksareal som er tilstrekkelig store til å motta alle typer jord og løsmasser fra utbyggingen av Hagejordet. Ettersom utbyggingen av Hagejordet vil skje etappevis, vil erfaringene fra første byggetrinn være med på å videreutvikle og forbedre metodikken for jordflytting i senere byggetrinn

Meat and bone meal and biosolids as slow-release phosphorus fertilizers

Biosolids and meat and bone meal (MBM) are commonly used as fertilizers in agriculture, often at application rates where total phosphorus (P) far exceeds the annual demand. In a pot experiment, three biosolids and two types of MBM were tested at two commonly used application rates. Their contributions to P uptake in ryegrass (second and third season) were compared with annual mineral P fertilization. The soil was analysed for extractable P (PAL and POlsen). Only soil amended with digested, limed biosolids provided a P uptake in ryegrass the third season comparable to annual NPK fertilization. Bone-rich MBM had considerable contributions to third season P uptake in soil with pH < 6. The product application rates did not influence P uptake significantly for any of the products. POlsen was found suitable to describe residual effects on soil P solubility, whereas the PAL-method was not applicable for MBM fertilized soils

Nytt IKEA varehus på S9 ved Deli i Vestby. Avlingsregistreringer 2013-2017.

I forbindelse med planer om etablering av IKEA varehus i Vestby, er det gjennomført avlingsregistreringer på området for planlagt varehus ved Deli og et område med oppfylt leirjord ved Nedre Rød. Avlingsnivået på jordsmonnet ved Deli var høyt i alle registreringsårene fra 2014 til 2017, og det ble oppnådd store avlinger av vårhvete, bygg, havre og åkerbønner. På det oppfylte arealet på Nedre Rød ble det registrert store avlingsvariasjoner både mellom år og mellom ulike deler av området.publishedVersio