Displacement of soil aggregates by elongating roots and emerging shoots of crop plants G. M. WhiteleyA. R. Dexter OriginalPaper Pages: 131 - 140
The behaviour of roots encountering cracks in soil G. M. WhiteleyA. R. Dexter OriginalPaper Pages: 141 - 149
Influence of ammonium: nitrate ratio and solution pH on mycorrhizal infection, growth and nutrient composition ofChrysanthemum morifolium var. Circus C. R. JohnsonW. M. JarrellJ. A. Menge OriginalPaper Pages: 151 - 157
The effect of nitrate concentration in a flowing solution system on growth and nitrate uptake of twoPlantago species A. H. J. FreijsenH. Otten OriginalPaper Pages: 159 - 169
Development of leaf water deficits in detached green and lime-chlorotic leaves of seedlings from populations ofEucalyptus obliqua L'Hérit C. A. Anderson OriginalPaper Pages: 171 - 181
Water relations, ethylene production, and morphological adaptation ofFraxinus pennsylvanica seedlings to flooding Z. C. TangT. T. Kozlowski OriginalPaper Pages: 183 - 192
Inhibiting nitrification and increasing yield of barley by band placement of thiourea with fall-applied urea S. S. MalhiM. Nyborg OriginalPaper Pages: 193 - 206
Reuse of peat bags for tomatoes and cucumbers O. A. BaevreG. Guttormsen OriginalPaper Pages: 207 - 214
Mathematical models on diffusion of oxygen to and within plant roots, with special emphasis on effects of soil-root contact P. De WilligenM. Van Noordwijk OriginalPaper Pages: 215 - 231
Mathematical models on diffusion of oxygen to and within plant roots, with special emphasis on effects of soil-root contact M. van NoordwijkP. De Willigen OriginalPaper Pages: 233 - 241
Nutrient flow rates in rice roots under varying drainage conditions C. L. PatelB. P. GhilyalV. S. Tomar OriginalPaper Pages: 243 - 252
Nitrogenase activity (acetylene reduction) associated with leaves of different cultivars of paddy (Oryza sativa L.) M. G. Murty OriginalPaper Pages: 253 - 261
Distribution of fungicide-derived copper in soils, litter and vegetation of different aged stands of coffee (Coffea arabica L.) in Kenya Nicholas W. LeppNicholas M. DickinsonKeith L. Ormand OriginalPaper Pages: 263 - 270
Stabilité biologique et comportement physique d'un complexe argilo-humique placé dans différentes conditions de saturation en calcium ou en potassium M. GaiffeB. DuquetS. Bruckert OriginalPaper Pages: 271 - 284
Effect of substrate concentration, inorganic nitrogen, O2 concentration, temperature and pH on dehydrogenase activity in soil J. T. Trevors OriginalPaper Pages: 285 - 293
Effect of nitrogen fertilization and mild water stress on the distribution of nitrogen in tall fescue D. P. BeleskyM. L. FishmanS. R. Wilkinson OriginalPaper Pages: 295 - 303
Effect of nitrogen supply on barley pigment concentrations E. J. O'NeillT. BateyM. S. Cresser OriginalPaper Pages: 315 - 326
Phosphorus status of some saline and non-saline hydromorphic soils of the Niger Delta of Nigeria E. J. UdoM. A. IbeduA. A. Fagbami OriginalPaper Pages: 327 - 335
Improved methods for the extraction of soil samples for root research J. FlorisM. Van Noordwijk Short Communications Pages: 369 - 372
Effect of soil volume and plant density on mycorrhizal infection and growth response E. BååthD. S. Hayman Short Communications Pages: 373 - 376
The effect of sulfur supply on the root characteristics of subterranean clover and annual ryegrass M. A. GilbertA. D. Robson Short Communications Pages: 377 - 380
A comparison of a tissue solubilization method with a combustion method for liquid scintillation counting of14C-labelled soil J. M. Whipps Short Communications Pages: 381 - 385
The antibiotic effect of culture filtrates of some soil fungi on rhizobial growth in cultures D. AnusuyaS. B. Sullia Short Communications Pages: 387 - 390
Foliar chemical concentrations in red alder stands of various ages D. S. DeBellM. A. Radwan Short Communications Pages: 391 - 394
A unique laboratory method for evaluating agro-ecosystem effects of an industrial waste product T. C. ZwickM. F. ArthurP. Van Voris Short Communications Pages: 395 - 399
A laboratory test for screening iron chelates for use in alkaline soils P. I. OrphanosC. Hadjiloucas Short Communications Pages: 401 - 404
Growth and nutrient uptake of peanut inoculated with the mycorrhizal fungusGlomus fasciculatum compared with non-inoculated ones K. R. KrishnaD. J. Bagyaraj Short Communications Pages: 405 - 408