1. Nitrate reductase of tea as an indicator of yield and of effect of mulching material

   • R. L. Wickremasinghe
   • V. Fernando
   • A. Ekanayake

   OriginalPaper Pages: 3 - 7

2. Biochemical approach to the control ofXyleborus fornicatus (Coleoptera: Scolytidae)

   • R. L. Wickremasinghe
   • K. Thirugnanasuntheram

   OriginalPaper Pages: 9 - 15

3. Effect of gypsum, pressmud, fulvic acid and zinc sources on yield and zinc uptake by rice crop in a saline-sodic soil

   • Milap Chand
   • N. S. Randhawa
   • M. K. Sinha

   OriginalPaper Pages: 17 - 24

4. The effect of quinoid and phenolic compounds on urease and dehydrogenase activity and nitrification in soil

   • M. M. Mishra
   • W. Flaig
   • H. Soechtig

   OriginalPaper Pages: 25 - 33

5. Nitrification inhibition in drip irrigation systems

   • M. Laher
   • Y. Avnimelech

   OriginalPaper Pages: 35 - 42

6. Mycoparasitism ofFusarium SPP. onRhizoctonia solani Kühn

   • D. K. Arora
   • R. S. Dwivedi

   OriginalPaper Pages: 43 - 53

7. Assimilation of uranium by wheat and tomato plants

   • K. L. Gulati
   • M. C. Oswal
   • K. K. Nagpaul

   OriginalPaper Pages: 55 - 59

8. Allelopathic effects ofParthenium hysterophorus L

   • Sukhada D. Kanchan
   • Jayachandra

   OriginalPaper Pages: 61 - 66

9. Allelopathic effects ofParthenium hysterophorus L

   • Sukhada D. Kanchan
   • Jayachandra

   OriginalPaper Pages: 67 - 75

10. Modelling the growth of bacteria during glucose decomposition in soil under different temperatures

    • J. Kubát
    • B. Novák
    • M. Ružička

    OriginalPaper Pages: 77 - 84

11. Effect of heating on properties of some soils from Southern Nigeria and growth of rice

    • B. T. Kang
    • A. Sajjapongse

    OriginalPaper Pages: 85 - 95

12. Phosphate supplying power of rock phosphates in an oxisol

    • B. Van Raij
    • A. Van Diest

    OriginalPaper Pages: 97 - 104

13. A new technique of plant analysis to resolve iron chlorosis

    • J. C. Katyal
    • B. D. Sharma

    OriginalPaper Pages: 105 - 119

14. Osmotic and specific effects of magnesium sulphate on the mineral content ofZea mays

    • M. P. Sanchez Conde
    • P. Azuara

    OriginalPaper Pages: 121 - 131

15. Accumulation and toxicity of chloride in bean plants

    • S. Hajrasuliha

    OriginalPaper Pages: 133 - 138

16. Some effects of nickel toxicity on rye grass

    • B. Y. Khalid
    • J. Tinsley

    OriginalPaper Pages: 139 - 144

17. Loss of nitrate nitrogen in the soil surface layer in Japanese grassland during the heavy rainfall season and its enhancement by the root mat

    • N. Ae

    Short Communications Pages: 147 - 151

18. Effect of gibberellin on rice yield response to nitrogen applied at heading, and quality of seeds

    • R. K. Mukherjee
    • B. S. Prabhakar

    Short Communications Pages: 153 - 156

19. Elemental concentrations in plant tissues as influenced by low pH soils

    • A. M. Bartuska
    • I. A. Ungar

    Short Communications Pages: 157 - 161

20. A pellet method to demonstrate nitrogen fixation by free-living rhizobia

    • A. W. S. M. van Egeraat
    • P. C. J. M. Timmermans

    Short Communications Pages: 163 - 165

21. A gnotobiotic plant microcosm

    • J. A. Trofymow
    • J. Gurnsey
    • D. C. Coleman

    Short Communications Pages: 167 - 170