All Stories

  1. Rotational grass-legume leys increase arable crop yields, particularly at low N fertiliser rates

    Article • Field Crops Research, May 2025, Elsevier

    Göran Bergkvist, Dr Johannes Forkman

  2. Correction: Notes on correctness of p-values when analyzing experiments using SAS and R

    Article • PLOS One, December 2023, PLOS

    Dr Johannes Forkman

  3. Notes on correctness of p-values when analyzing experiments using SAS and R

    Article • PLOS One, November 2023, PLOS

    Dr Johannes Forkman

  4. A REML method for the evidence‐splitting model in network meta‐analysis

    Article • Research Synthesis Methods, November 2023, Wiley

    Dr Johannes Forkman

  5. Production and nutrient composition of forage legume fractions produced by juicing and leaf stripping

    Article • Acta Agriculturae Scandinavica Section B - Soil & Plant Science, October 2023, Taylor & Francis

    Dr Johannes Forkman

  6. Soil compaction effects on arbuscular mycorrhizal symbiosis in wheat depend on host plant variety

    Article • Plant and Soil, September 2023, Springer Science + Business Media

    Dr Johannes Forkman

  7. Biological variation of biochemical urine and serum analytes in healthy dogs

    Article • Veterinary Clinical Pathology, June 2023, Wiley

    Dr Johannes Forkman

  8. Testing components of two-way interaction in multi-environment trials

    Article • Communication in Statistics- Theory and Methods, August 2022, Taylor & Francis

    Dr Johannes Forkman

  9. Bayesian Analysis of Nonnegative Data Using Dependency-Extended Two-Part Models

    Article • Journal of Agricultural Biological and Environmental Statistics, August 2021, Springer Science + Business Media

    Dr Johannes Forkman

  10. Projecting results of zoned multi-environment trials to new locations using environmental covariates with random coefficient models: accuracy and precision

    Article • Theoretical and Applied Genetics, April 2021, Springer Science + Business Media

    Dr Johannes Forkman

  11. Homeostasis model assessment, serum insulin and their relation to body fat in cats

    Article • BMC Veterinary Research, January 2021, Springer Science + Business Media

    Dr Johannes Forkman

  12. Cross‐validation of stagewise mixed‐model analysis of Swedish variety trials with winter wheat and spring barley

    Article • Crop Science, July 2020, Wiley

    Dr Johannes Forkman

  13. Tillage and crop rotations enhance populations of earthworms, termites, dung beetles and centipedes: evidence from a long-term trial in Zambia

    Article • The Journal of Agricultural Science, August 2019, Cambridge University Press

    Dr Johannes Forkman

  14. A Cross‐Validation of Statistical Models for Zoned‐Based Prediction in Cultivar Testing

    Article • Crop Science, July 2019, Wiley

    Dr Johannes Forkman

  15. Testing multiplicative terms in AMMI and GGE models for multienvironment trials with replicates

    Article • Theoretical and Applied Genetics, April 2019, Springer Science + Business Media

    Dr Johannes Forkman

  16. Effects of compaction on soil hydraulic properties, penetration resistance and water flow patterns at the soil profile scale

    Article • Soil Use and Management, April 2019, Wiley

    Dr Johannes Forkman

  17. Hypothesis Tests for Principal Component Analysis When Variables are Standardized

    Article • Journal of Agricultural Biological and Environmental Statistics, February 2019, Springer Science + Business Media

    Dr Johannes Forkman

  18. Generalized prediction intervals for treatment effects in random-effects models

    Article • Biometrical Journal, July 2018, Wiley

    Dr Johannes Forkman

  19. Modeling Spatially Correlated and Heteroscedastic Errors in Ethiopian Maize Trials

    Article • Crop Science, April 2018, Wiley

    Dr Johannes Forkman

  20. Weighted Estimation of AMMI and GGE Models

    Article • Journal of Agricultural Biological and Environmental Statistics, April 2018, Springer Science + Business Media

    Dr Johannes Forkman

  21. Nonparametric Resampling Methods for Testing Multiplicative Terms in AMMI and GGE Models for Multienvironment Trials

    Article • Crop Science, March 2018, Wiley

    Dr Johannes Forkman

  22. Effects of cutting traits and competition on performance and size hierarchy development over two cutting cycles in willow

    Article • Biomass and Bioenergy, January 2018, Elsevier

    Dr Johannes Forkman

  23. Long-term effects of grass-clover leys on the structure of a silt loam soil in a cold climate

    Article • Agriculture Ecosystems & Environment, September 2017, Elsevier

    Dr Johannes Forkman

  24. Generalized Confidence Intervals for Intra- and Inter-subject Coefficients of Variation in Linear Mixed-effects Models

    Article • The International Journal of Biostatistics, June 2017, De Gruyter

    Dr Johannes Forkman

  25. Cross‐Validation in AMMI and GGE Models: A Comparison of Methods

    Article • Crop Science, January 2017, Wiley

    Dr Johannes Forkman

  26. Two decades of no-till in the Oberacker long-term field experiment: Part I. Crop yield, soil organic carbon and nutrient distribution in the soil profile

    Article • Soil and Tillage Research, November 2016, Elsevier

    Dr Johannes Forkman

  27. Establishment and Early Growth of Willow at Different Levels of Weed Competition and Nitrogen Fertilization

    Article • BioEnergy Research, March 2016, Springer Science + Business Media

    Dr Johannes Forkman

  28. A Comparison of Super-Valid Restricted and Row–Column Randomization

    Article • Journal of Agricultural Biological and Environmental Statistics, March 2016, Springer Science + Business Media

    Dr Johannes Forkman

  29. Effects of root fragmentation on generative reproduction ofSonchus arvensis

    Article • Acta Agriculturae Scandinavica Section B - Soil & Plant Science, February 2016, Taylor & Francis

    Dr Johannes Forkman

  30. Boron fertilisation of organically managed grass-clover swards on coarse-textured soils: effects on botanical and element composition

    Article • Agricultural and Food Science, December 2015, Agricultural and Food Science

    Dr Johannes Forkman

  31. Population dynamics and nitrogen allocation ofSonchus arvensisL. in relation to initial root size

    Article • Acta Agriculturae Scandinavica Section B - Soil & Plant Science, August 2015, Taylor & Francis

    Dr Johannes Forkman

  32. A resampling test for principal component analysis of genotype-by-environment interaction

    Article • Acta et Commentationes Universitatis Tartuensis de Mathematica, June 2015, University of Tartu Press

    Dr Johannes Forkman

  33. Effects of Cutting Length, Orientation and Planting Depth on Early Willow Shoot Establishment

    Article • BioEnergy Research, November 2014, Springer Science + Business Media

    Dr Johannes Forkman

  34. Parametric bootstrap methods for testing multiplicative terms in GGE and AMMI models

    Article • Biometrics, March 2014, Wiley

    Dr Johannes Forkman

  35. The use of a reference variety for comparisons in incomplete series of crop variety trials

    Article • Journal of Applied Statistics, August 2013, Taylor & Francis

    Dr Johannes Forkman

  36. Regeneration capacity from buds on roots and rhizomes in five herbaceous perennials as affected by time of fragmentation

    Article • Plant Ecology, August 2013, Springer Science + Business Media

    Dr Johannes Forkman

  37. Effects of mechanical planting on establishment and early growth of willow

    Article • Biomass and Bioenergy, August 2013, Elsevier

    Dr Johannes Forkman

  38. Seasonal variation in sprouting capacity from intact rhizome systems of three perennial weeds

    Article • Weed Research, July 2013, Wiley

    Dr Johannes Forkman

  39. Sprouting capacity from intact root systems ofCirsium arvenseandSonchus arvensisdecrease in autumn

    Article • Weed Research, March 2013, Wiley

    Dr Johannes Forkman

  40. Gas transport and subsoil pore characteristics: Anisotropy and long-term effects of compaction

    Article • Geoderma, March 2013, Elsevier

    Dr Johannes Forkman

  41. Persistent subsoil compaction and its effects on preferential flow patterns in a loamy till soil

    Article • Geoderma, January 2013, Elsevier

    Dr Johannes Forkman

  42. Influence of temperature and photoperiod on sprouting capacity of Cirsium arvense and Sonchus arvensis root buds

    Article • Weed Research, July 2012, Wiley

    Dr Johannes Forkman

  43. Persistent effects of subsoil compaction on pore size distribution and gas transport in a loamy soil

    Article • Soil and Tillage Research, June 2012, Elsevier

    Dr Johannes Forkman

  44. Performance of empirical BLUP and Bayesian prediction in small randomized complete block experiments

    Article • The Journal of Agricultural Science, May 2012, Cambridge University Press

    Dr Johannes Forkman

  45. Effect of region on the uncertainty in crop variety trial programs with a reduced number of trials

    Article • Euphytica, February 2012, Springer Science + Business Media

    Dr Johannes Forkman

  46. Effects of clone and cutting traits on shoot emergence and early growth of willow

    Article • Biomass and Bioenergy, February 2012, Elsevier

    Dr Johannes Forkman

  47. Crop yield trends in relation to temperature indices and a growth model

    Article • Climate Research, July 2010, Inter-Research Science Center

    Dr Johannes Forkman

  48. Yield and stability of yield of single- and multi-clover grass-clover swards in two contrasting temperate environments

    Article • Grass and Forage Science, September 2009, Wiley

    Dr Johannes Forkman

  49. Radiation-use efficiency in leys: influences of growth period and clover proportion

    Article • Acta Agriculturae Scandinavica Section B - Soil & Plant Science, September 2009, Taylor & Francis

    Dr Johannes Forkman

  50. Estimator and Tests for Common Coefficients of Variation in Normal Distributions

    Article • Communication in Statistics- Theory and Methods, January 2009, Taylor & Francis

    Dr Johannes Forkman

  51. A Method for Designing Nonlinear Univariate Calibration

    Article • Technometrics, November 2008, Taylor & Francis

    Dr Johannes Forkman

  52. The distribution of McKay's approximation for the coefficient of variation

    Article • Statistics & Probability Letters, January 2008, Elsevier

    Dr Johannes Forkman

  53. Aboveground nitrogen in relation to estimated total plant uptake in maize and bean

    Article • Nutrient Cycling in Agroecosystems, May 2007, Springer Science + Business Media

    Dr Johannes Forkman