Abstract
A part of the root system dies already during plant development (root mortality) and is replaced by new root growth (gross growth). Therefore, root measurement using auger sampling methods gives information only about the net size of a root system. In case of winter barley root, gross growth between 1 April and 18 June was more than twice the net size of the root system and even greater at P shortage. New roots can exploit undepleted soil and therefore average uptake rates of a root system with a high turnover should be greater than of a root system with a low turnover. Thus, model calculations based on gross root growth of barley resulted in a 4–17 % higher uptake than based on the net development of the barley root system. Measured uptake was still higher, so a high root turnover is not the single strategy to gain more phosphate at P shortage.
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Literaturverzeichnis
Barraclough, P. B.; Tinker, P. B., 1981: The determination of ionic diffusion coefficients in soils. Diffusion coefficients in sieved soils in relation to water content and bulk density. Journal of Soil Science 32, 225–236.
Böhm, W., 1979: Methods of Studying Root Systems. Ecological Studies 33 Berlin: Springer-Verlag.
Cheng, W.; Coleman, D. C.; Box, J. E., 1990: Root dynamics, production and distribution in agroecosystems on the Georgia Piedmont using minirhizotrons. Journal of Applied Ecology 27, 592–604.
Claassen, N., 1990: Nährsto f fau fnahme höherer Pflanzen aus dem Boden. Severin Verlag, Göttingen (1990).
Claassen, N.; Syiung, K. M.; Jungk, A., 1986: Verification of a mathematical model by simulating potassium uptake from soil. Plant and Soil 95, 209–220.
Clarkson, D. T.; Sanderson, J.; Scorr Russel, R., 1968: Ion uptake and root age. Nature 220, 805–806.
Hansson, A.-C.; Steen, E.; Andrén, O., 1992: Root growth of daily irrigated and fertilized barley investigated with ingrowth cores, soil cores and minirhizotrons. Swedish Journal of Agricultural Research 22, 141–152.
Hendrick, R. L.; Pregitzer, K. S., 1996: Applications of minirhizotrons to understand root function in forests and other natural ecosystems. Plant and Soil 185, 293–304.
Hoffland, E.; Findenegg, G. R.; Nelemans, J. A., 1989: Solubilization of rock phosphate by rape. II. Local root exudation of organic acids as a response to P starvation. Plant and Soil 113, 161–165.
Majdi, H., 1996: Root sampling methods — applications and limitations of the minirhizotron technique. Plant and Soil 185, 255–258.
Sauerbeck, D.; Johnen, B., 1976: Der Umsatz von Pflanzenwurzeln im Laufe der Vegetationsperiode and dessen Beitrag zur „Bodenatmung“. Zeitschrift für Pflanzenernährung and Bodenkunde 139 315–328.
Swinnen, J.; Van Veen, J. A.; Merckx, R., 1995: Root decay and turnover of rhizodeposits in field-grown winter wheat and spring barley estimated by 14C pulse-labelling. Soil Biology and Biochemistry 27, 211–217.
Tennant, D., 1975: A test of a modified line intersect method of estimating root length. Journal of Ecology 63, 995–1001.
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© 1999 B. G. Teubner Stuttgart · Leipzig
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Steingrobe, B., Schmid, H., Zintel, A., Claassen, N. (1999). Wurzelerneuerung bei Wintergerste und ihre Bedeutung für die P-Versorgung. In: Merbach, W., Wittenmayer, L., Augustin, J. (eds) Stoffumsatz im wurzelnahen Raum. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-91134-6_8
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DOI: https://doi.org/10.1007/978-3-322-91134-6_8
Publisher Name: Vieweg+Teubner Verlag
Print ISBN: 978-3-519-00268-0
Online ISBN: 978-3-322-91134-6
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