1. Oxalate synthesis from soil bicarbonate by the mycorrhizal fungusPaxillus involutus

   • F. Lapeyrie

   OriginalPaper Pages: 3 - 8

2. Plant and soil nitrogen dynamics in California annual grassland

   • L. E. Jackson
   • R. B. Strauss
   • J. W. Bartolome

   OriginalPaper Pages: 9 - 17

3. Rhizosphere microorganism effects on soluble amino acids, sugars and organic acids in the root zone ofAgropyron cristatum, A. smithii andBouteloua gracilis

   • D. A. Klein
   • B. A. Frederick
   • M. J. Trlica

   OriginalPaper Pages: 19 - 25

4. Impact of salinity stress on soil-borne fungi of sugarbeet

   • M. S. El-Abyad
   • H. Hindorf
   • M. A. Rizk

   OriginalPaper Pages: 27 - 32

5. Impact of salinity stress on soil-borne fungi of sugarbeet

   • M. S. El-Abyad
   • H. Hindorf
   • M. A. Rizk

   OriginalPaper Pages: 33 - 37

6. Soil mcirobial biomass estimates using 2450 MHz microwave irradiation

   • Charles W. Hendricks
   • Nanci Pascoe

   OriginalPaper Pages: 39 - 47

7. Nutrient release from decomposing foliar litter of three tree species with spicial reference to calcium, magnesium and potassium dynamics

   • John M. Blair

   OriginalPaper Pages: 49 - 55

8. Effect of liming and phosphorus application on performance ofLeucaena leucocephala in acid soils

   • B. Duguma
   • B. T. Kang
   • D. U. U. Okali

   OriginalPaper Pages: 57 - 61

9. Salt tolerance of mung bean (Vigna radiata (L.) Wilczek) at two growth stages

   • M. Ashraf
   • E. Rasul

   OriginalPaper Pages: 63 - 67

10. Differential plant response to inoculation with two VA mycorrhizal fungi isolated from a low-pH soil

    • D. O. Wilson

    OriginalPaper Pages: 69 - 75

11. Effect of crop rotation on native vesicular arbuscular mycorrhizal propagules in soil

    • K. M. Harinikumar
    • D. J. Bagyaraj

    OriginalPaper Pages: 77 - 80

12. Estimation of residual N effect of faba bean and pea on two succeeding cereals using¹⁵N methodology

    • R. Senaratne
    • G. Hardarson

    OriginalPaper Pages: 81 - 89

13. Seasonal dynamics of major cations in xylem sap and needles of Norway spruce (Picea abies L. Karst.) in stands with different soil solution chemistry

    • M. Kazda
    • P. Weilgony

    OriginalPaper Pages: 91 - 100

14. Phosphorus efficiency of plants

    • Doris Föhse
    • N. Claassen
    • A. Jungk

    OriginalPaper Pages: 101 - 109

15. Factors affecting the distribution and dynamics of¹⁴C in two soils cropped to barley

    • G. D. Dinwoodie
    • N. G. Juma

    OriginalPaper Pages: 111 - 121

16. Alleviation of nitrate inhibition of soybean nodulation by high inoculum does not involve bacterial nitrate metabolism

    • Charles G. R. Lawson
    • Bernard J. Carroll
    • Peter M. Gresshoff

    OriginalPaper Pages: 123 - 127

17. Field evaluation of soybean genotypes selected for enhanced capacity to nodulate and fix nitrogen in the presence of nitrate

    • D. F. Herridge
    • J. H. Betts

    OriginalPaper Pages: 129 - 135

18. A rapid method for determination of nitrate in soil and plant extracts

    • J. P. Singh

    Short Communications Pages: 137 - 139

19. Use of a root assessment tray for the detection of take-all on lateral roots of wheat seedlings

    • P. J. Cotterill
    • K. Sivasithamparam

    Short Communications Pages: 140 - 142

20. Acetylene reduction activity of pearl millet inbred lines grown in soil

    • J. H. Bouton

    Short Communications Pages: 143 - 144

21. Trickle irrigation of sudax with treated sewage effluent

    • I. Papadopoulos
    • Y. Stylianou

    Short Communications Pages: 145 - 148

22. Root exudates ofZea mays and production of auxins, gibberellins and cytokinins byAzotobacter chroococcum

    • M. V. Martinez-Toledo
    • T. de la Rubia
    • J. Gonzalez-Lopez

    Short Communications Pages: 149 - 152

23. Equilibrium patterns of slash pine water potentials using thermocouple psychrometry as influenced by bath temperature

    • T. E. Cooksey
    • N. B. Comerford
    • D. G. Neary

    Short Communications Pages: 153 - 155