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Grass yield in relation to potassium supply and the concentration of cations in tissue water

Published online by Cambridge University Press:  27 March 2009

P. B. Barraclough  and
R. A. Leigh
P. B. Barraclough
Affiliation:
AFRC Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ, UK
R. A. Leigh
Affiliation:
AFRC Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Hertfordshire AL5 2JQ, UK
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Summary

A long-term field experiment on permanent grass at Rothamsted (UK) was studied between 1988 and 1991 to determine the relationship between soil and plant K and to identify critical soil and plant concentrations for grass yield. Maximum dry matter yield was obtained at a soil exchangeable K concentration (Kex) of 114 mg/kg dry soil (45 μм-K in the soil solution). Grass well-supplied with K maintained an average concentration of c. 200 m м-K in the tissue water of whole shoots in spring, although individual measurements varied in the range 140–320 mм, depending largely on the soil water availability. These tissue concentrations were not exceeded in soils with Kex values up to 800 mg/kg. Yield was reduced by 60% on plots low in K (Kex in the range 60–90 mg/kg). The yield reductions were probably due to low turgor because tissue osmotic pressures were low and potassium concentrations in tissue water (which averaged 64 mм) were probably too high to disrupt the biochemical functions of K. The results suggest that there is no universal critical tissue water concentration for K in the biophysical role of turgor maintenance, as other cations and solutes are able to substitute for it. The ultimate determinant of turgor-dependent yield loss is tissue osmotic pressure. The critical tissue osmotic pressure in grass shoots in a typical season at Rothamsted was c. 400 mosm/kg. No universal critical osmotic pressure can be expected however, as this will depend on the availability of water and therefore on growing conditions.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 121 , Issue 2 , October 1993 , pp. 157 - 168
Copyright
Copyright © Cambridge University Press 1993

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References

REFERENCES

Ahmad, N. & Wyn Jones, R. G. (1982). Tissue distribution of glycinebetaine, proline and inorganic ions in barley at different times during the plant growth cycle. Journal of Plant Nutrition 5, 195–205.CrossRefGoogle Scholar
Barraclough, P. B. (1990). Modelling K uptake by plants from soil. In Proceedings of the 22nd Colloquium of the International Potash Institute, pp. 217–230. Bern, Switzerland: International Potash Institute.Google Scholar
Barraclough, P. B., Kuhlmann, H. & Weir, A. H. (1989). The effects of prolonged drought and nitrogen fertilizer on root and shoot growth and water uptake by winter wheat. Journal of Agronomy and Crop Science 163, 352–360.CrossRefGoogle Scholar
Bates, T. E. (1971). Factors affecting critical nutrient concentrations in plants and their evaluation: a review. Soil Science 112, 116–130.CrossRefGoogle Scholar
French, B. K. & Legg, B. J. (1979). Rothamsted irrigation 1964–76. Journal of Agricultural Science, Cambridge 92, 15–37.CrossRefGoogle Scholar
Hsiao, T. C. (1973). Plant responses to water stress. Annual Review of Plant Physiology 24, 519–570.CrossRefGoogle Scholar
Hüsken, D., Steudle, E. & Zimmermann, U. (1978). Pressure probe technique for measuring water relations of cells in higher plants. Plant Physiology 61, 158–163.CrossRefGoogle ScholarPubMed
Hylton, L. O., Ulrich, A. & Cornelius, D. R. (1967). Potassium and sodium interrelations in growth and mineral content of Italian ryegrass. Agronomy Journal 59, 311–314.CrossRefGoogle Scholar
Jarvis, S. C. (1982). Sodium absorption and distribution in forage grasses of different potassium status. Annals of Botany 49, 199–206.CrossRefGoogle Scholar
Kelling, K. A. & Matocha, J. E. (1990). Plant analysis as an aid in fertilizing forage crops. In Soil Testing and Plant Analysis (3rd edn) (Ed. Westerman, R. L.), pp. 603–643. Madison, Wisconsin, USA: Soil Science Society of America.Google Scholar
Leigh, R. A. (1989). Potassium concentrations in whole plants and cells in relation to growth. In Proceedings of the 21st Colloquium of the International Potash Institute, pp. 91–100. Bern, Switzerland: International Potash Institute.Google Scholar
Leigh, R. A. & Johnston, A. E. (1983 a). The effects of fertilizers and drought on the concentrations of potassium in the dry matter and tissue water of field-grown spring barley. Journal of Agricultural Science, Cambridge 101, 741–748.CrossRefGoogle Scholar
Leigh, R. A. & Johnston, A. E. (1983 b). Concentrations of potassium in the dry matter and tissue water of fieldgrown spring barley and their relationships to grain yield. Journal of Agricultural Science, Cambridge 101, 675–685.CrossRefGoogle Scholar
Leigh, R. A. & Wyn Jones, R. G. (1984). A hypothesis relating critical potassium concentrations for growth to the distribution and functions of this ion in the plant cell. New Phytologist 97, 1–13.CrossRefGoogle Scholar
Leigh, R. A., Chater, M., Storey, R. & Johnston, A. E. (1986). Accumulation and subcellular distribution of cations in relation to the growth of potassium-deficient barley. Plant, Cell and Environment 9, 595–604.Google Scholar
Ministry of Agriculture, Fisheries and Food (1991). Fertilizer Recommendations. MAFF Reference Book 209. London: HMSO.Google Scholar
Munson, R. D. (Ed.) (1985). Potassium in Agriculture. Madison, Wisconsin, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America.CrossRefGoogle Scholar
Murphy, J. & Riley, J. P. (1962). A modified single solution method for the determination of phosphate in natural waters. Analytica Chimica Acta 27, 31–36.CrossRefGoogle Scholar
Nobel, P. S. (1991). Physicochemical and Environmental Plant Physiology. San Diego, USA: Academic Press.Google Scholar
Olsen, S. R., Cole, C. V., Watanabe, F. S. & Dean, L. A. (1954). Estimation of available phosphorus in soils by extraction with sodium bicarbonate. USD A Circular No. 939.Google Scholar
Preston, R. L. & Linsner, J. R. (1985). Potassium in animal nutrition. In Potassium in Agriculture (Ed. Munson, R. D.), pp. 595–617. Madison, Wisconsin, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America.Google Scholar
Robinson, D. L. (1985). Potassium nutrition of forage grasses. In Potassium in Agriculture (Ed. Munson, R. D.), pp. 895–914. Madison, Wisconsin, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America.Google Scholar
Ross, G. J. S. (1980). MLP, Maximum Likelihood Program. Rothamsted Experimental Station, Harpenden, Herts. UK.Google Scholar
Smith, G. S., Middleton, K. R. & Edmonds, A. S. (1980). Sodium nutrition of pasture plants. II. Effect of sodium chloride on growth, chemical composition and the reduction of nitrate nitrogen. New Phytologist 84, 613–622.CrossRefGoogle Scholar
Tomos, A. D., Leigh, R. A., Shaw, C. A. & Wyn Jones, R. G. (1984). A comparison of methods for measuring turgor pressures and osmotic pressures of cells of red beet storage tissue. Journal of Experimental Botany 35, 1675–1683.CrossRefGoogle Scholar
Varley, J. A. (1966). Automatic methods for the determinatioin of nitrogen, phosphorus and potassium in plant material. Analyst 91, 119–126.CrossRefGoogle Scholar
Warren, R. G. & Johnston, A. E. (1962). Barnfield. In Rothamsted Report for 1961, part II, pp. 227–247.Google Scholar
Westerman, R. L. (Ed.) (1990). Soil Testing and Plant Analysis (3rd edn). Madison, Wisconsin, USA: Soil Science Society of America.CrossRefGoogle Scholar
Woodhouse, P. J., Wild, A. & Clement, C. R. (1978). Rate of uptake of potassium by three crop species in relation to growth. Journal of Experimental Botany 29, 885–894.CrossRefGoogle Scholar
Wyn Jones, R. G. & Pollard, A. (1983). Proteins, enzymes and inorganic ions. In Encyclopedia of Plant Physiology, New Series. Vol. 15B. (Eds Lauchli, A. & Bieleski, R. L.), pp. 528–562. Berlin: Springer-Verlag.Google Scholar