1. Plant and bacterial mucilages of the maize rhizosphere: Comparison of their soil binding properties and histochemistry in a model system

   • M. Watt
   • M. E. McCully
   • C. E. Jeffree

   Research Article Pages: 151 - 165

2. Genotypic differences in nitrogen assimilation in Vicia faba: Effect of nitrate

   • Juan Manuel Caba
   • Carmen Lluch
   • Francisco Ligero

   Research Article Pages: 167 - 174

3. Emergence and growth of two non-nodulated soybean genotypes (Glycine max (L.) Merr.) in response to soil acidity

   • K. D. Ritchey
   • T. E. Carter Jr.

   Research Article Pages: 175 - 183

4. Arsenate tolerance in Agrostis castellana and Agrostis delicatula

   • T. De Koe
   • N. M. M. Jaques

   Research Article Pages: 185 - 191

5. Differences among maize cultivars in the utilization of soil nitrate and the related losses of nitrate through leaching

   • F. Wiesler
   • W. J. Horst

   Research Article Pages: 193 - 203

6. Potential role of allelopathy in the soil and the decomposing root of Chinese-fir replant woodland

   • Qishui Zhang

   Research Article Pages: 205 - 210

7. Regulation of NH₄ ⁺ uptake in wheat plants: Effect of root ammonium concentration and amino acids

   • H. F. Causin
   • A. J. Barneix

   Research Article Pages: 211 - 218

8. Effectiveness of VAM fungi in nonsterile soils before and after optimization of P in soil solution

   • M. Habte
   • R. L. Fox

   Research Article Pages: 219 - 226

9. Heterogeneity of soil and soil solution chemistry under Norway spruce (Picea abies Karst.) and European beech (Fagus silvatica L.) as influenced by distance from the stem basis

   • A. S. Koch
   • E. Matzner

   Research Article Pages: 227 - 237

10. Growth and development of seminal and crown root systems in N-limited barley, and their contributions to nitrate acquisition during vegetative and generative growth

    • M. Mattsson
    • T. Lundborg
    • C.-M. Larsson

    Research Article Pages: 239 - 247

11. Iron deficiency in lentil: Yield loss and geographic distribution in a germplasm collection

    • W. Erskine
    • N. P. Saxena
    • M. C. Saxena

    Research Article Pages: 249 - 254

12. Manganese nutrition and accumulation of phenolics and lignin as related to differential resistance of wheat genotypes to the take-all fungus

    • Z. Rengel
    • R. D. Graham
    • J. F. Pedler

    Research Article Pages: 255 - 263

13. Utilization of the ambient concentration as a criterion for steady state after exponential growth: Some culture experiments with optimum or suboptimum N nutrition

    • A. H. J. Freijsen
    • H. Otten

    Research Article Pages: 265 - 271

14. Assessment of lead availability in soils contaminated by mine spoil

    • Marcus Jopony
    • Scott Young

    Research Article Pages: 273 - 278

15. Effects of a short-term p-hydroxybenzoic acid application on grain yield and yield components in different tiller categories of spring barley

    • O. Christen
    • J. V. Lovett

    Research Article Pages: 279 - 286

16. Effects of an organic manure on the transformations of ammonium nitrogen in planted and unplanted soil

    • S. P. Trehan
    • A. Wild

    Research Article Pages: 287 - 294

17. Contents volume 151 (1993)

    Legacy Pages: 299 - 301

18. Author index

    Legacy Pages: 302 - 302