Effects of long-term artificial acidification on the ground vegetation and soil in a 100 year-old stand of Scots pine (Pinus sylvestris) Per Holm NygaardGunnar Abrahamsen OriginalPaper Pages: 151 - 160
Measurements of nitrogen fixation in fababean at different N fertilizer rates using the 15N isotope dilution and ‘A-value’ methods G. HardarsonS. K. A. DansoK. Reichardt OriginalPaper Pages: 161 - 168
Maize and soybean root clustering as indicated by root mapping S. D. LogsdonR. R. Allmaras OriginalPaper Pages: 169 - 176
Contribution of the VA mycorrhizal hyphae in acquisition of phosphorus and zinc by maize grown in a calcareous soil S. K. KothariH. MarschnerV. Römheld OriginalPaper Pages: 177 - 185
Nodulation and nitrogen accretion response of Cercocarpus betuloides seedlings to phosphorus supplementation and water availability B. J. WienholdJ. O. Klemmedson OriginalPaper Pages: 187 - 197
The use of MES buffer in early nodulation studies with annual Medicago species M. A. EwingA. D. Robson OriginalPaper Pages: 199 - 206
Influence of soil temperature during root appearance on the trajectory of nodal roots of field grown maize Francois TardieuSylvain Pellerin OriginalPaper Pages: 207 - 214
Transfer of fixed nitrogen from white clover to associated grasses in swards grazed by dairy cows, estimated using 15N methods S. F. Ledgard OriginalPaper Pages: 215 - 223
Root biomass of a dry deciduous tropical forest in Mexico J. CastellanosM. MaassJ. Kummerow OriginalPaper Pages: 225 - 228
Effective nodulation of rhamnaceous actinorhizal plants induced by air dry soils R. D. TortosaM. Cusato OriginalPaper Pages: 229 - 233
Long-term effects of SO2 on plants, SO2 metabolism and regulation of intracellular pH M. J. Kropff OriginalPaper Pages: 235 - 245
The effects of flooding on the formation of ectomycorrhizae in Pinus sylvestris seedlings Elna Stenström OriginalPaper Pages: 247 - 250
Nutritional disturbances of young Scots pines caused by pine bark bugs in a dry heath forest Hannu Raitio OriginalPaper Pages: 251 - 259
Mycorrhizal association of Glomus aggregatum with palmarosa enhances growth and biomass M. L. GuptaK. K. Janardhanan OriginalPaper Pages: 261 - 263
The effect of soil temperature, moisture and nitrogen on Striga asiatica (L.) Kuntze seed germination, viability and emergence on sorghum (Sorghum bicolor L. Moench) roots under field conditions M. A. OsmanP. S. RajuJ. M. Peacock OriginalPaper Pages: 265 - 273
Lead tolerance of Betula and Salix in the mining area of Mechernich/Germany Ludger EltropGary BrownKlaus Brinkmann OriginalPaper Pages: 275 - 285
Winter grass cover crop effects on nematodes and yields of double cropped soybean J. F. PedersenR. Rodriguez-Kabana OriginalPaper Pages: 287 - 291
N2 fixation by soybean-Bradyrhizobium combinations under acidity, low P and high Al stresses R. W. TaylorM. L. WilliamsK. R. Sistani OriginalPaper Pages: 293 - 300