caa a22 4500 477110304 CHVBK 20180405111606.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF00011170 doi (NATIONALLICENCE)springer-10.1007/BF00011170 N, K and P deficiency in chronosequential cut summer-dry grasslands on gley podzol after the cessation of fertilizer application [Elektronische Daten] [Dick Pegtel, Jan Bakker, Geurt Verweij, Latzi Fresco] With the intensification of agricultural practices, formerly species rich marginal grassland communities of high botanical value in the Netherlands have been fertilized or manured since the first part of the twentieth century. This type of land use resulted in a dramatic decrease of the original plant species-richness. In the early 1970's yearly nutrient input to many of these grasslands was ceased as a nature management practice, while hay-cropping was continued. This type of grassland management is carried out to decrease overall nutrient supplying ability of the soil to plant cover in order to restore their original high botanical richness. The effect of this management on the type and the extent of nutrient deficiency was studied by comparing the short-term shoot responsiveness of undisturbed turfs to added nutrients and the nutrient status of fieldgrown dominants of four hay-field communities which were not fertilized for 3, 7, 20 or 25 years. Contrary to expectation, hay-cropping without input of additional nutrients did not impose an increase of species-richness of grassland on gley podzol. During early vegetation change strong inadequacy of N supply and moderate inadequacy of K supply by the soil regulate (shoot) growth. P-deficiency was not established. Prolonged discontinuation of fertilizer application caused concomitant inadequate supplies of N, K and P. In the last field (25 years unfertilized), nutrient deficiencies could not be detected by shoot growth responses to added nutrients but only by a low nutrient status. It appeared that during this type of vegetation change N-deficiency is the most pronounced and that K-deficiency developes much more rapidly than P-deficiency. The strong decline in total aerial pool sizes of N, K and P also emphasizes these simultaneously occurring shifts. We conclude that cut grassland composition on gley podzol soil is regulated by co-deficiencies of at least the soil phytoavailable macronutrients nitrogen, potassium and phosphorus. The absence of change in plant species number is likely not regulated by the nutrient supplying ability of the soil. Seed dispersal from elsewhere seems to be the most important factor. Kluwer Academic Publishers, 1996 bioassay nationallicence fertilization nationallicence gley podzol nationallicence macronutrient deficiency nationallicence nutrient ratios nationallicence plant species richness nationallicence summer-dry grassland nationallicence vegetation change nationallicence Pegtel Dick Laboratory for Plant Ecology, Department of Plant Biology, University of Groningen, P. O. Box 14, 9750 AA, Haren, The Netherlands aut Bakker Jan Laboratory for Plant Ecology, Department of Plant Biology, University of Groningen, P. O. Box 14, 9750 AA, Haren, The Netherlands aut Verweij Geurt Laboratory for Plant Ecology, Department of Plant Biology, University of Groningen, P. O. Box 14, 9750 AA, Haren, The Netherlands aut Fresco Latzi Laboratory for Plant Ecology, Department of Plant Biology, University of Groningen, P. O. Box 14, 9750 AA, Haren, The Netherlands aut Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl 178/1(1996-01-01), 121-131 0032-079X 178:1<121 1996 178 11104 https://doi.org/10.1007/BF00011170 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00011170 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pegtel Dick Laboratory for Plant Ecology, Department of Plant Biology, University of Groningen, P. O. Box 14, 9750 AA, Haren, The Netherlands aut NATIONALLICENCE 700 1- Bakker Jan Laboratory for Plant Ecology, Department of Plant Biology, University of Groningen, P. O. Box 14, 9750 AA, Haren, The Netherlands aut NATIONALLICENCE 700 1- Verweij Geurt Laboratory for Plant Ecology, Department of Plant Biology, University of Groningen, P. O. Box 14, 9750 AA, Haren, The Netherlands aut NATIONALLICENCE 700 1- Fresco Latzi Laboratory for Plant Ecology, Department of Plant Biology, University of Groningen, P. O. Box 14, 9750 AA, Haren, The Netherlands aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 178/1(1996-01-01), 121-131 0032-079X 178:1<121 1996 178 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer