Effects of boron on nitrogen metabolism and sugar levels of sugar beet I. BonillaC. CadahíaV. Hernando OriginalPaper Pages: 3 - 9
Heterotrophic nitrification in a health soil demonstrated by anin situ method Siebren J. Van De DijkSep R. Troelstra OriginalPaper Pages: 11 - 21
A greenhouse study on the effect of inoculation of N-fixing blue-green algae in an alluvial soil treated with P and Mo on the yield of rice and changes in the N-content of soil K. C. SahaL. N. Mandal OriginalPaper Pages: 23 - 30
Effects of N-serve on soybeans and soil nitrogen transformations Dolen R. MorrisNantakorn BoonkerdYenchai Vasuvat OriginalPaper Pages: 31 - 39
Effect of yeast extracts on higher plants Michiharu KobayashiYasuko TorigaiEiichi Takahashi OriginalPaper Pages: 41 - 47
Some aspects of the chemistry of lithium in soils B. G. DaveyR. C. Wheeler OriginalPaper Pages: 49 - 60
Soil organic matter and yield of forest and tree crops S. O. OjeniyiO. O. Agbede OriginalPaper Pages: 61 - 67
Influence of compound fertilizer and cupric sulfate on soil enzymes and CO2-evolution F. A. SchinnerR. NiederbacherI. Neuwinger OriginalPaper Pages: 85 - 93
Investigations on the relationship between P-fertility, phosphatase activity and ATP content in soil J. Dissing NielsenF. Eiland OriginalPaper Pages: 95 - 103
Effect of potassium nutrition on frost damage and yield of potato plants on alluvial soils of the Punjab (India) J. S. GrewalS. N. Singh OriginalPaper Pages: 105 - 110
Two ecologically distinct subspecies ofHypochaeris radicatal L. Siebren J. Van De Dijk OriginalPaper Pages: 111 - 122
Effect of soil temperature alteration by soil covers on seedling emergence of wheat (Triticum aestivum L.) sown on two dates Usha K. ChopraT. N. Chaudhary Short Communications Pages: 125 - 129
Trichoderma viride as a mycoparasite ofAspergillus spp. Bharat RaiV. N. SinghD. B. Singh Short Communications Pages: 131 - 135
Deep placement: A method of nitrogen fertilizer application compatible with algal nitrogen fixation in wetland rice soils P. A. RogerS. A. KulasooriyaE. T. Craswell Short Communications Pages: 137 - 142
Is nitrate reduced to ammonium in waterlogged acid sulfate soil? K. L. Sahrawat Short Communications Pages: 147 - 149
Effect of cultivation on the mineralization of nitrogen in soil D. S. Powlson Short Communications Pages: 151 - 153