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Derivation of a dynamic model of the kinetics\ud of nitrogen uptake throughout the growth of\ud lettuce : calibration and validation

By Kefeng Zhang and Ian G. Burns

Abstract

A kinetic model of nitrogen (N) uptake throughout growth was developed for lettuce\ud cultivated in nutrient solution under varying natural light conditions. The model couples\ud nitrogen uptake with dry matter accumulation using a two-compartment mechanistic\ud approach, incorporating structural and non-structural pools. Maximum nitrogen uptake\ud rates are assumed to decline with shoot dry weight, to allow for the effects of plant\ud age. The model was parameterized using data from the literature, and calibrated for\ud differences in light intensity using an optimization algorithm utilizing data from three\ud experiments in different growing seasons. The calibrated model was validated against\ud the data from two independent experiments conducted under different light conditions.\ud Results showed that the model made good predictions of nitrogen uptake by plants from\ud seedlings to maturity under fluctuating light levels in a glasshouse. Plants grown at a\ud higher light intensity showed larger maximum nitrogen uptake rates, but the effect of\ud light intensity declined towards plant maturity

Topics: QK
Publisher: Taylor & Francis (Routledge)
OAI identifier: oai:wrap.warwick.ac.uk:203

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Citations

  1. (1991). 8Modelling N Uptake Throughout Lettuce Growth 1459
  2. (1990). A dynamic growth model of vegetative soya bean plants: Model structure and behaviour under varying root temperature and nitrogen concentration. doi
  3. (1994). A mechanistic theory for the relationship between growth rateandtheconcentrationofnitrate-Nororganic-Ninyoungplantsderived from nutrient interruption experiments.
  4. (1994). A model relating the maximum nitrogen uptake of lettuce (Lactuca satvia L.) to the growth of roots and shoots. doi
  5. (1997). A validated model to predict the effects of environment on the growth of lettuce D o w n l o a d e d B y : [ U n i v e r s i t y o f W a r w i c k ] A t : : S e p t e m b e r 81460 K. Zhang et al.
  6. (1988). C and N utilization of two lettuce genotypes during growth under non-varying light conditions and after changing the light intensity. doi
  7. (1996). Characterizing nitrogen uptake in lettuce using very-sensitive ion chromatography. doi
  8. (1987). Comparison between the seminal and nodal root systems of winter wheat in their activity for nitrogen and K uptake. doi
  9. (2004). Developing A Dynamic model for glasshouse lettuce growth and nitrogen concentration.
  10. (1999). Effect of nitrogen availability and supplementary light on the nitrogen concentration of soil-grown lettuce.
  11. Implications for climate change. doi
  12. (1995). Influence of growth season on the content of nitrate, vitamin C, β-Carotin and sugar of head lettuce under greenhouse conditions.
  13. (1981). Modelling the growth of winter lettuce. In:
  14. (1998). Nitrate concentration in greenhouse lettuce: a modelling study.
  15. (1999). Nitrogen accumulationinplants:aroleforwater.JournalofExperimentalBotany50:613–624. D o w n l o a d e d B y : [ U n i v e r s i t y o f W a r w i c k ] A t : : S e p t e m b e r
  16. (1976). Nitrogen flux into corn roots as influenced by shoot requirement. doi
  17. (2005). Nitrogen regulation in hydroponicallygrownlettuce.ProceedingsofFifteenthInternationalPlantNutrition Colloquium: Plant Nutrition for Food Security, Human Health and Environmental Protection,
  18. (1998). Nitrogen uptake kinetics in lettuce as influenced by light and nitrogen nutrition. doi
  19. (2001). Nitrogen-limited growth of lettuce is associated with lower stomatal conduction. New Phytologist 152: 97–106. Burns,I.G.1980.Influenceofthespatialdistributionofnitrateontheuptakeof Nb yplants: A review and model for rooting depth. doi
  20. (1984). Optimization: Theory and Application.N ew
  21. (1999). Plant Physiology. doi
  22. (1996). Regulation of nitrogen uptake on the whole plant level. doi
  23. (1988). Relations between nitrogen concentration and other osmotica in the cell sap of lettuce cultivars (Lactuca sativa L.).
  24. (1982). Root zone temperature effects on growth and nitrogen absorption in Rape (Brassica napus cv. doi
  25. (1994). Sensitivity analysis of a dynamic growthmodeloflettuce.JournalofAgriculturalEngineeringResearch59:
  26. (1995). Shoot control of nitrogen uptake rates by roots of Brassica napus L.: effects of localized nitrogen supply. doi
  27. (1976). Simulation model for nutrient uptake from soil by a growing plant root system. doi
  28. Soil 38: 621–635. Barber,S.A.,andJ.H.Cushman.1981.Nitrogenuptakemodelforagoronomic crops.In:ModelingWastewaterRenovation-LandTreatment,pp.382–409.
  29. (1994). Studies of the relationship between the growth rate of young plants and their total-N concentration using nutrient interruption techniques: Theory and experiments. doi
  30. (1978). The influence of ambient nitrogen, temperature, and light on nitrogen assimilation in Sudangrass seedlings. doi
  31. (1985). The role of nitrogen in the osmoregulation of lettuce (Lactuca sativa L.) growth at different light intensities. doi
  32. (1978). The uptake of nitrate by Lolium perenne from flowing nutrient solution. I. Effect of nitrate concentration. doi
  33. (1973). Uptake of solutes by multiple root systems from soil. III. A model for calculating the solute uptake by a randomly dispersed root system developing in a finite volume of soil. doi
  34. (1994). Validation of a dynamic lettuce growth model for greenhouse climate control. doi

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