Hopp til hovedinnholdet

Search

allprojectspublicationssubjectsemployeesserviceseventsnews

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.

2021

Authors

Marit Almvik Fengshou Dong Roger Holten Agnethe Christiansen Ole Martin Eklo Marianne Stenrød Yanbo Li

Abstract

No abstract has been registered

Authors

Jihong Liu Clarke Siri Elise Dybdal Yongquan Zheng Xinglu Pan

Abstract

No abstract has been registered

Authors

Wuletawu Abera Marit Jørgensen

Abstract

No abstract has been registered

Authors

Wuletawu Abera Marit Jørgensen

Abstract

No abstract has been registered

Authors

Anne-Grete Roer Hjelkrem Jakob Geipel Anne Kjersti Bakken Audun Korsæth

Abstract

This paper describes a tool that enables farmers to time harvests and target nitrogen (N) inputs in their forage production, according to the prevailing yield potential. Based on an existing grass growth model for forage yield estimation, a more detailed process-based model was developed, including a new nitrogen module. The model was tested using data from an experiment conducted in a grassland-rich region in central Norway and showed promising accuracy with estimated root mean square error (RMSE) of 50 and 130 g m-2 for dry matter yield in the trial. Three parameters were detected as highly sensitive to model output: initial value of organic N in the soil, fraction of humus in the initial organic N in the soil, and fraction of decomposed N mineralized. By varying these parameters within a range from 0.5 to 1.5 of their respective initial value, most of the within-field variation was captured. In a future step, remotely sensed information on model output will be included, and in-season model correction will be performed through re-calibration of the highly sensitive parameters.

To document

Authors

O. Janne Kjønaas Teresa Gómez de la Bárcena Gro Hylen Jørn-Frode Nordbakken Tonje Økland

Abstract

No abstract has been registered

To document

Authors

Hilde Halland Lampros Lamprinakis Ingrid Kvalvik Giovanna Bertella

Abstract

No abstract has been registered

To document

Authors

Christophe Pelabon Elena Albertsen Arnaud Le Rouzic Cyril Firmat Geir Hysing Bolstad W. Scott Armbruster Thomas Fredrik Hansen

Abstract

No abstract has been registered

To document

Authors

Zahra Bitarafan Wiktoria Kaczmarek-Derda Lars Olav Brandsæter Inger Sundheim Fløistad

Abstract

No abstract has been registered

Authors

Atle Wehn Hegnes

Abstract

No abstract has been registered