, Volume 65, Issue 1, pp 35–43 | Cite as

Water relations and growth of three grasses during wet and drought years in a tallgrass prairie

  • A. K. Knapp
Original Papers


The water relations and growth of three tallgrass prairie species Panicum virgatum, Andropogon gerardii and A. scoparius were examined in irrigated and unwatered prairie in eastern Kansas (USA). Measurements of the osmotic potential at full turgor, ψ π 100 , at zero turgor, ψ0, and growth of vegetative and reproductive tillers were made in a year with above-normal precipitation and a drought year to evaluate: 1) the ability of these grasses to osmotically adjust in response to water stress and 2) the effect of drought or supplemental water on growth of these species. Although these grasses adjusted osmotically even in the wet year, the degree of adjustment of ψ π 100 and ψ0 in the drought year was relatively large (0.60–0.78 MPa and 0.88–1.34 MPa, respectively) compared to reports for other species. Seasonal minimum values of ψ π 100 and ψ0 for these grasses in the drought year were lower than in most mesic species and seasonal fluctuations in ψ π 100 and ψ0 were greater than reported for most mesic or xeric species. The relatively frequent occurrence of drought in sub-humid tallgrass prairies may partially explain the greater than expected magnitude of osmotic adjustment in these grasses.

Irrigation in the wet year increased reproductive biomass in the mesic grass P. virgatum, but had no effect on A. gerardii or the more xeric grass A. scoparius. However, irrigation in the drought year increased maximum shoot biomass in all three grasses significantly with the largest increase in P. virgatum. Reproduction in P. virgatum was also increased more by irrigation in the drought year compared to the other grasses. Irrigation did not increase season's end production of A. gerardii in the wet year, but in the drought year production was 28% greater in irrigated than unwatered prairie. The combination of these water relations and growth responses of the three grasses to wetter than normal and drought years supports their reported distribution along a moisture gradient in tallgrass prairies.


Biomass Water Relation Panicum Virgatum Osmotic Potential Shoot Biomass 
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  1. Bailey RG (1980) Description of the ecoregions of the United States, US Dept Agric Misc Publ No 1391Google Scholar
  2. Bazzaz FA, Parrish JAD (1982) Organization of grassland communities. In: Estes JR, Tyrl RJ, Brunken NJ (eds) Grasses and grasslands. Univ Oklahoma Press, Norman, USA, pp 233–254Google Scholar
  3. Begg JE (1980) Morphological adaptations of leaves to water stress. In: Turner NC, Kramer PJ (eds) Adaptation of plants to water and high temperature stress. Wiley-Interscience NY USA, pp 33–42Google Scholar
  4. Begg JE, Turner NC (1976) Crop water deficits. Adv Agron 28:161–217Google Scholar
  5. Blum A, Mayer J, Gozlan G (1983) Associations between plant production and some physiological components of drought resistance in wheat. Plant, Cell and Env 6:219–225Google Scholar
  6. Brown MJ, Bark LD (1971) Drought in Kansas. Kan St Univ Agr Exp Stat Bull 547Google Scholar
  7. Campbell GS, Papendick RI, Rabie E, Shayo-Ngowi AJ (1979) A comparison of osmotic potential, elastic modulus, and apoplastic water in leaves of dryland winter wheat. Agronomy J 71:31–36Google Scholar
  8. Cheung YNS, Tyree MT, Dainty J (1975) Water relations parameters on single leaves obtained in a pressure bomb and some ecological interpretations. Can J Bot 53:1342–1346Google Scholar
  9. Cheung YNS, Tyree MT, Dainty J (1976) Some possible sources of error in determining bulk elastic moduli and other parameters from pressure-volume curves of shoots and leaves. Can J Bot 54:758–765Google Scholar
  10. Clayton-Greene KA (1983) The tissue water relationships of Callitris columellaris, Eucalyptus melliodora and Eucalyptus microcarpa investigated using the pressure-volume technique. Oecologia (Berlin) 57:368–373Google Scholar
  11. Clements FE, Shelford VE (1939) Bioecology. John Wiley & Sons, NY, USAGoogle Scholar
  12. Downton WJS (1983) Osmotic adjustment during water stress protects the photosynthetic apparatus against photoinhibition. Plant Sci Letters 30:137–143Google Scholar
  13. Esau K (1977) Anatomy of seed plants. John Wiley & Sons, N.Y.Google Scholar
  14. Henson JE (1982) Osmotic adjustment to water stress in Pearl Millet (Pennisetum americanum [L.] Leeke) in a controlled environment. J Exp Bot 33:78–87Google Scholar
  15. Henson IE, Mehalakshmi V, Bidinger FR, Alagarswamy G (1982) Osmotic adjustment to water stress in Pearl Millet (Pennisetum americanum [L.] Leeke) under field conditions. Plant, Cell and Env 5:147–154Google Scholar
  16. Hinckley TM, Duhme F, Hinckley AR, Richter H (1980) Water relations of drought hardy shrubs: osmotic potential and stomatal reactivity. Plant, Cell and Env 3:131–140Google Scholar
  17. Hsiao TC (1973) Plant responses to water stress. Ann Rev Plant Physiol 24:519–570Google Scholar
  18. Hsiao TC, Aceuedo E, Fereres E, Henderson DW (1976) Water stress, growth, and osmotic adjustment. Phil Trans R Soc Ser B 273:479–500Google Scholar
  19. Jackson PA, Spomer GG (1979) Biophysical adaptations of four western conifers to habitat water conditions. Bot Gaz 140:428–532CrossRefGoogle Scholar
  20. Jantz DR, Harner RF, Rowland HT, Gier DA (1975) Soil Survey of Riley county and part of Geary county, Kansas. US Dept Agri Soil Consv Serv and Kansas St Univ Agr Exp StatGoogle Scholar
  21. Jones MM, Turner NC (1978) Osmotic adjustment in leaves of Sorghum in response to water deficits. Plant Physiol 61:122–126Google Scholar
  22. Knapp AK (1984) Post-burn differences in solar radiation, leaf temperature and water stress influencing production in a lowland tallgrass prairie. Amer J Bot 71:220–227Google Scholar
  23. Ladiges PY (1975) Some aspects of tissue water relations in three populations of Eucalyptus viminalis Labill. New Phytol 75:53–62Google Scholar
  24. Levitt J (1972) Responses of plants to environmental stresses. Academic Press, NY USAGoogle Scholar
  25. McKendrick JD, Owensby CE, Hyde RM (1975) Big bluestem and indiangrass reproduction and annual reserve carbohydrate and nitrogen cycles. Agro Ecosys 2:75–93Google Scholar
  26. Monson RK, Smith SD (1982) Seasonal water potential components of Sonoran desert plants. Ecology 63:113–123Google Scholar
  27. Osonubi O, Davies WJ (1981) Root growth and water relations of oak and birch seedlings. Oecologia (Berlin) 51:343–350Google Scholar
  28. Owensby CE, Hyde RM, Anderson KL (1970) Effects of clipping and supplemental nitrogen and water on loamy upland bluestem range. J Range Manage 23:341–346Google Scholar
  29. Nilsen ET, Sharifi MR, Rundel PW, Jarrell WM, Virginia RA (1983) Diurnal and seasonal water relations of the desert phreatophyte Prosopis glandulosa (honey mesquite) in the Sonoran desert of California. Ecology 64:1381–1393Google Scholar
  30. Risser PG, Birney EC, Blocker HD, May SW, Parton WJ, Wiens JA (1981) The true prairie ecosystem. Hutchinson Ross Publ. Co., Stroudsburg, Pennsylvania USAGoogle Scholar
  31. Roberts SW, Strain BR, Knoerr KR (1980) Seasonal patterns of leaf water relations in four co-occurring forest tree species: parameters from pressure-volume curves. Oecologia (Berlin) 46:330–337Google Scholar
  32. Sobrado MA, Turner NC (1983) Influence of water deficit on the water relations characteristics and productivity of wild and cultivated sunflowers. Aust J Plant Physiol 10:195–203Google Scholar
  33. Thornthwaite CW (1933) The climates of the earth. Geogr Rev 23:433–440Google Scholar
  34. Turner NC, Jones MM (1980) Turgor maintenance by osmotic adjustment: a review and evaluation. In: Turner NC, Kramer PJ (eds) Adaptation of plants to water and high temperature stress. John Wiley & Sons, New York USA, pp 87–103Google Scholar
  35. Weaver JE (1954) North American prairie, Johnson Publ. Co., Lincoln, Nebraska, USAGoogle Scholar
  36. Weaver JE, Albertsson FW (1936) Effects of the great drought on the prairies of Iowa, Nebraska, and Kansas. Ecology 17:567–639Google Scholar
  37. Weaver JE, Albertson FW (1943) Resurvey of grasses, forbs, and underground plant parts at the end of the great drought. Ecol Monog 13:64–117Google Scholar
  38. Weibe HH (1972) The role of water potential and its components in physiological processes of plants. In: Brown RW, Van Haveren BP (eds) Psychometry in water relations research: proceedings of the symposium on thermocouple psychrometry. Utah Agr Exp Stat, Logan Utah USA, pp 194–197Google Scholar
  39. Wells PV (1970) Postglacial vegetational history of the Great Plains. Science 167:1574–1582Google Scholar
  40. Wilson JR, Ludlow MM (1983) Time trends for changes in osmotic adjustment and water relations of leaves of Cenchrus ciliaris during and after water stress. Aust J Plant Physiol 10:15–24Google Scholar
  41. Wilson JR, Fisher MJ, Schulze E-D, Dolby GR, Ludlow MM (1979) Comparison between pressure-volume and dewpoint-hygrometry techniques for determining the water relations characteristic of grass and legume leaves. Oecologia (Berlin) 41:77–88Google Scholar
  42. Wilson JR, Ludlow MM, Fisher MJ, Schulze E-D (1980) Adaptation to water stress of the leaf water relations of four tropical forage species. Aust J Plant Physiol 7:207–220Google Scholar
  43. Zar JH (1974) Biostatistical analysis. Prentice-Hall, Englewood Cliffs, New Jersey, USAGoogle Scholar
  44. Zur B, Boote KJ, Jones JW (1981) Changes in internal water relations and osmotic properties of leaves in maturing soybean plants. J Exp Bot 32:1181–1191Google Scholar

Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • A. K. Knapp
    • 1
  1. 1.Division of BiologyKansas State UniversityManhattanUSA

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