1. Étude De Quelques Acides Humiques Sur Gel De Dextrane

   • Jean-René Bailly
   • Henri Margulis

   OriginalPaper Pages: 343 - 361

2. Regular yearly variations in effect of irrigation in southern dry regions

   • Gerhard Rappe

   OriginalPaper Pages: 362 - 368

3. Temporal changes in carboxylate content of ryegrass with stepwise change in nutrition

   • W. Dijkshoorn
   • D. J. Lathwell
   • C. T. De Wit

   OriginalPaper Pages: 369 - 390

4. Influence of soil oxygen and soil water on the accumulation of nutrients in avocado seedlings (Persea Americana mill.)

   • C. K. Labanauskas
   • L. H. Stolzy
   • T. E. Szuszkiewicz

   OriginalPaper Pages: 391 - 406

5. Manganese-phosphate reactions in aqueous systems and the effects of applications of monocalcium phosphate, on the availability of manganese to oats in an alkaline fen soil

   • S. G. Heintze

   OriginalPaper Pages: 407 - 423

6. The effect of nitrogen and sulphur on changes in nitrogen fractions of barley plants at various early stages of growth and on yield and amino acid composition of grain

   • W. Eppendorfer

   OriginalPaper Pages: 424 - 438

7. The role of organic matter in soil manganese equilibrium

   • D. J. Cotter
   • U. N. Mishra

   OriginalPaper Pages: 439 - 448

8. Studies of silica in the oat plant

   • K. A. Handreck
   • L. H. P. Jones

   OriginalPaper Pages: 449 - 459

9. Drying patterns in soil following anhydrous ammonia injection

   • J. F. Parr
   • F. E. Khasawneh

   OriginalPaper Pages: 460 - 470

10. Effect of urea on the germination and yield of jute (Corchorus capsularis)

    • D. H. Khan
    • B. C. Mandal

    Short Communication Pages: 471 - 473

11. The effect of nitrogen fertilization on the release of soil nitrogen

    • Z. Aleksic
    • H. Broeshart
    • V. Middelboe

    Short Communication Pages: 474 - 478

12. Soil fungistasis andSclerotium cepivorum berk

    • J. D. Allen
    • J. M. Young

    Short Communication Pages: 479 - 480

13. Erratum

    Erratum Pages: i - i