Simulation of the nitrogen balance in the soil and a winter wheat crop

Groot, J.J.R.; Willigen, P. de

doi:10.1007/978-94-011-3434-7_11

Cited by 17 publications

(21 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The principles of the original model for winter wheat, NWHEAT, and its application for analysing soil nitrogen supply and nitrogen uptake by the crop during the growth period and for improvement of nitrogen application methods, were discussed by Groot & De Willigen (1991) and Groot & Spiertz (1991). A complete description of NWHEAT was given by Groot (1987Groot ( , 1993.…”

Section: Npotatomentioning

confidence: 99%

Comparison of two potato simulation models under climate change. I. Model calibration and sensitivity analyses

Wolf¹

2002

Clim. Res.

View full text Add to dashboard Cite

To analyse the effects of climate change on potato growth and production, both a simple growth model, POTATOS, and a comprehensive model, NPOTATO, were applied. Both models were calibrated and tested against results from experiments and variety trials in The Netherlands. The sensitivity of model results to different values of weather variables was determined. The comparison of the results from both models indicated the sort of conditions in which model results differed and may become less reliable. The average tuber yield level and the inter-annual yield variation in potato experiments were predicted well by NPOTATO, whereas POTATOS sometimes calculated yields that were too high. The fit between yields observed in variety trials on clay soils and simulated yields from both models was quite good over the last 4 yr of the period 1974-1988. However, in almost all earlier years a considerably lower yield occurred in the trials than was calculated. This yield difference might be caused by factors that were not described by the models (e.g. a change in management). Irrigated tuber yield from both models considerably increased with increases in both solar radiation and atmospheric CO 2 , and it had its optimum at the present temperatures in Wageningen, The Netherlands. Water-limited yield from both models had a slightly lower temperature optimum, considerably increased with increasing precipitation, atmospheric CO 2 and vapour pressure and decreased with increasing wind speed. The main differences between NPOTATO and POTATOS results were the higher evapo-transpiration and, hence, the stronger yield reduction by water limitation from NPOTATO, and with irrigation, the lower yields for present conditions and the weaker and stronger yield increases with increasing radiation and atmospheric CO 2 , respectively, from NPOTATO compared with those from POTATOS.

show abstract

Section: Npotatomentioning

confidence: 99%

Comparison of two potato simulation models under climate change. I. Model calibration and sensitivity analyses

Wolf¹

2002

Clim. Res.

View full text Add to dashboard Cite

show abstract

“…Cumulative light absorption after anthesis was therefore calculated as a measure of total crop photosynthesis during the grain filling stage ( Table 1). The cumulative absorbed photosynthetically active radiation (PAR, 400-700 nm) by green area was calculated from measured incoming radiation using a light extinction coefficient of0.7 for leaves and 0.3 for the above-positioned ear layer (Groot, 1987; ear area measured one-sided).…”

Section: ------------------------------------------------------~mentioning

confidence: 99%

Genetic variation in partial resistance to leaf rust in winter wheat: disease progress, foliage senescence and yield reduction

Spitters¹,

Roermund

Nassau³

et al. 1990

Netherlands Journal of Plant Pathology

View full text Add to dashboard Cite

Relations between leaf rust progress, foliage senescence and yield reduction were studied for seven winter wheat genotypes, differing in their partial resistance to leaf rust. Leaf rust accelerated leaf and ear senescence. Photosynthesis measurements showed, however, that the photosynthetic capacity of the remaining green surface was not affected. Differences between genotypes in yield reduction were largely explained by differences in leaf senescence and, therefore, in cumulative light interception (r = 0.83) and crop photosynthesis. Reduction in cumulative light interception was closely related to the area under the disease-progress-curve (r = 0.85), which was also closely associated with yield reduction (r = 0.88). However, the time taken to reach a 501t!o reduction of green leaf area and the pustule density on I July (i.e. halfway through the epidemic) were just as good predictors of yield reduction as cumulative light interception and area under diseaseprogress-curve, suggesting that the former are useful criteria in the selection for partial resistance to leaf rust.

show abstract

“…The field experimental data were selected from local representative, high-quality field experimental data sets with a grain yield range from 2 to 8 t ha -1 . The original experiments were for specific agronomic studies and included measurements of crop-model-ready single treatments of wheat experiments at four contrasting locations, including a location in The Netherlands (Wageningen (Groot and Willigen 1991)), Argentina (Balcarce (Travasso, Rodriguez and Grondona 1995)), India (New Delhi (Naveen 1986)), and Australia (Wongan Hills (Asseng et al 1998)) representing a wide range of growing conditions. The data were quality-checked and considered high-quality sentinel sites.…”

Section: Introductionmentioning

confidence: 99%

Benchmark data set for wheat growth models: field experiments and AgMIP multi-model simulations

Asseng

Ewert

Martre

et al. 2015

ODJAR

View full text Add to dashboard Cite

Simulation of the nitrogen balance in the soil and a winter wheat crop

Cited by 17 publications

References 16 publications

Comparison of two potato simulation models under climate change. I. Model calibration and sensitivity analyses

Comparison of two potato simulation models under climate change. I. Model calibration and sensitivity analyses

Genetic variation in partial resistance to leaf rust in winter wheat: disease progress, foliage senescence and yield reduction

Benchmark data set for wheat growth models: field experiments and AgMIP multi-model simulations

Contact Info

Product

Resources

About