1. Effect of deicing chloride salts on ion accumulation in spruce (Picea abies (L.) sp.)

   • J. Bogemans
   • L. Neirinckx
   • J. M. Stassart

   OriginalPaper Pages: 3 - 11

2. Different performances of soil phosphate tests for reflecting the effects of buffering capacity on uptake of native phosphate with time

   • R. E. Mendoza

   OriginalPaper Pages: 13 - 19

3. Evaluation of soil respiration and soil CO₂ concentration in a lowland moist forest in Panama

   • T. A. Kursar

   OriginalPaper Pages: 21 - 29

4. Effects of some pure and mixedFrankia strains on seedling growth in differentAlnus species

   • D. Prat

   OriginalPaper Pages: 31 - 38

5. A comparison of mineral uptake and translocation by above-ground and below-ground root systems ofSalix syringiana

   • Nalini M. Nadkarni
   • Richard B. Primack

   OriginalPaper Pages: 39 - 45

6. Nitrogenase activity of blue-green algae on seasonally flooded soils in Bangladesh

   • J. A. Rother
   • B. A. Whitton

   OriginalPaper Pages: 47 - 52

7. Loss of dry matter and cell contents from fibrous roots of sugar beet due to sampling, storage and washing

   • W. Grzebisz
   • J. Floris
   • M. Van Noordwijk

   OriginalPaper Pages: 53 - 57

8. Effects of rhizosphere soil, vesicular-arbuscular mycorrhizal fungi and phosphate onPlantago major L. ssp.pleiosperma Pilger

   • R. Baas
   • C. van Dijk
   • S. R. Troelstra

   OriginalPaper Pages: 59 - 67

9. Net nitrogen mineralization, nitrification and CO₂ production in alternating moisture conditions in an unfertilized low-humus sandy soil from the Sahel

   • B. De Bruin
   • F. W. T. Penning De Vries
   • S. C. Van De Geijn

   OriginalPaper Pages: 69 - 78

10. Response of grain sorghum to enhanced-ammonium supply

    • J. J. Camberato
    • B. R. Bock

    OriginalPaper Pages: 79 - 83

11. Biomass and flower production of winged bean in a nutrient film (NFT) hydroponic system

    • K. K. Chow
    • T. V. Price

    OriginalPaper Pages: 85 - 92

12. Response of honelocust (Gleditsia triacanthos L.) to soil solution aluminium

    • Edward Sucoff
    • Cynthia Buschena
    • Paul Bloom

    OriginalPaper Pages: 93 - 99

13. Study of the contribution of the shoot and/or root ofAlnus sp. in the compatibility between the host and a Sp⁺ Frankia strain using a grafting technique

    • F. Kurdali
    • A. Capellano
    • A. M. Domenach

    OriginalPaper Pages: 101 - 109

14. Model calculations on the relative importance of internal longitudinal diffusion for aeration of roots of non-wetland plants

    • P. De Willigen
    • M. Van Noordwijk

    OriginalPaper Pages: 111 - 119

15. Non-uniform soil water extaction by plant roots

    • J. M. Hainsworth
    • L. A. G. Aylmore

    Short Communications Pages: 121 - 124

16. The use of 13C-NMR for studies of wheat straw decomposition

    • A. L. Cogle
    • P. G. Saffigna
    • P. F. Barron

    Short Communications Pages: 125 - 128

17. Reduced rhizosphere colonization ability ofAgrobacterium tumefaciens chromosomal virulence (chv) mutants

    • Martha C. Hawes
    • Steven G. Pueppke

    Short Communications Pages: 129 - 132

18. Inoculationin vitro of wheat seedlings and wheat straw cultures withBacillus azotofixans

    • B. D. De Lima
    • E. G. C. Penido

    Short Communications Pages: 133 - 136

19. The role of bacteria in pH increase of nettle water

    • R. Peterson
    • P. Jensén

    Short Communications Pages: 137 - 140

20. The effect of replication on the probability of isolating nematophagous fungi from soil

    • F. Bailey
    • N. F. Gray

    Short Communications Pages: 141 - 143

21. Sunflower and maize transorganal tissue pH gradients and problems related to the ion transport mechanisms

    • N. I. Mitreva

    Short Communications Pages: 144 - 146