Mineralization of nitrogen in two soil-organic-matter fractions extracted with formic acid Hassan Suliman Ibrahim OriginalPaper Pages: 1 - 10
Effect of nitrogen fertilization and cropping on the composition and amount of the soil-organic-matter extracted with formic acid Hassan Suliman Ibrahim OriginalPaper Pages: 11 - 15
The effect of humic substances on the respiration and growth of micro-organisms A. J. McloughlinE. Küster OriginalPaper Pages: 17 - 25
Effect of time of nitrogen application on its absorption by wheat from soil and labelled ammonium sulfate A. Monem BalbaH. M. HassanF. M. Mady OriginalPaper Pages: 27 - 31
The effect of calcium carbonate and potassium sulphate on the efficiency of ammonium as tested by barley seedlings A. Monem BalbaM. R. Shabanah OriginalPaper Pages: 33 - 39
Evaluation of the nitrogen nutrition status of rice by plant analysis Mervyn W. Thenabadu OriginalPaper Pages: 41 - 48
On the resistance of effectiveness ofRhizobium trifolii to a low pH D. A. van Schreven OriginalPaper Pages: 49 - 55
Etude de quelques acides humiques sur gel de dextrane (II) Jean-René par BaillyElsie Tittonel OriginalPaper Pages: 57 - 80
Denitrification in undisturbed cores from a solodized solonetz B horizon R. J. K. MyersJ. W. McGarity OriginalPaper Pages: 81 - 89
Nitrogen mineralization and nitrification during incubation of East Pakistan ‘tea’ soils in relation to pH M. IshaqueA. H. Cornfield OriginalPaper Pages: 91 - 95
Principles and practice of foliar analysis as a basis for crop-logging in pine plantations D. I. BevegeB. N. Richards OriginalPaper Pages: 159 - 169
A technique for isolation of Penicillia from soil Rajpati Dwivedi Short Communication Pages: 171 - 172
A technique for regulating oxygen tension in a closed biological system M. K. Mahendrappa Short Communication Pages: 173 - 177
Effect of foliar spray of morphactin on fungi in the root zone ofCapsicum annuum V. Ranga RaoM. JayakarK. G. Mukerji Short Communication Pages: 179 - 182
The use of inert polymers in hydroponic studies J. O. RieleyR. J. Summerfield Short Communication Pages: 183 - 185
Microbial population of the laimosphere of squash (Cucurbita maxima) A. MagyarosyJ. G. Hancock Short Communication Pages: 187 - 190
Nitrogenase activity in the rhizosphere of sugar cane and some other tropical grasses Johanna DöbereinerJ. M. DayP. J. Dart Short Communication Pages: 191 - 196
Diurnal fluctuations in soil water potential Edwin L. FiscusM. G. Huck Short Communication Pages: 197 - 202
Sulphur status of plants by sulphate-sulphur: Sample handling as a source of misinterpretation K. A. Handreck Short Communication Pages: 203 - 207
A method for estimating the lengths and spatial patterns of two interpenetrating root systems J. P. BaldwinP. B. Tinker Short Communication Pages: 209 - 213
Interaction effect of sulphur and molybdenum on the uptake and utilization of these elements by raya (Brassica juncea L.) N. S. PasrichaN. S. Randhawa Short Communication Pages: 215 - 220
Enzymic activity and synthesis of nucleic acids in okra (Abelmoschus esculantus) and spongegourd (Luffa cylindrica) grown in saline substrate G. L. MaliwalK. V. Paliwal Short Communication Pages: 221 - 228
Manganese toxicity in yellow birch (Betula alleghaniensis Britton) seedlings M. C. Hoyle Short Communication Pages: 229 - 232