Incorporation of heavy metals by the mud snail, Cipangopaludina chinensis malleata Reeve, in submerged paddy soil treated with composted sewage sludge Yasushi KuriharaTakao SuzukiKiyoshi Moriyama OriginalPaper Pages: 93 - 97
The abundance of heterocystous blue-green algae in rice soils and inocula used for application in rice fields P. A. RogerS. Santiago-ArdalesI. Watanabe OriginalPaper Pages: 98 - 105
The effects on N2 fixation (C2H2 reduction), bacterial population and rice plant growth of two modes of straw application to a wetland rice field J. K. LadhaA. Tirol-PadreI. Watanabe OriginalPaper Pages: 106 - 111
Occurrence and nature of mixed infections in nodules of field-grown soybeans (Glycine max) M. MoawadE. L. Schmidt OriginalPaper Pages: 112 - 114
Effect of pH on nitrogen mineralization in crop-residue-treated soils M. H. FuX. C. XuM. A. Tabatabai OriginalPaper Pages: 115 - 119
Elemental, functional infrared and free radical characterization of humic acid-type fungal polymers (melanins) N. SenesiT. M. MianoJ. P. Martin OriginalPaper Pages: 120 - 125
Production of root-derived material and associated microbial growth in soil at different nutrient levels R. MerckxA. DijkstraJ. A. van Veen OriginalPaper Pages: 126 - 132
Estimation of associative nitrogen fixation in relation to water regime and plant nutrition in a long-term pot experiment with rice (Oryza sativa L.) G. Trolldenier OriginalPaper Pages: 133 - 140
A sensitive method for measuring cyanide and cyanogenic glucosides in sand culture and soil A. M. DartnallR. G. Burns OriginalPaper Pages: 141 - 147
Applicability of arginine ammonification as indicator of microbial activity in different soils K. AlefD. Kleiner OriginalPaper Pages: 148 - 151
Physical properties of casts of the earthworm Aporrectodea rosea B. M. McKenzieA. R. Dexter OriginalPaper Pages: 152 - 157
Determination of amino acids from the leaves of evergreen oak (Quercus ilex L.) at four different stages of decomposition N. SadakaN. Poinsot-Balaguer OriginalPaper Pages: 158 - 163
Activity, origins and location of cellulases in a silt loam soil C. F. A. HopeR. G. Burns OriginalPaper Pages: 164 - 170
Effect of ammonium fertilizer on NH3 loss and Ca, Mg, ammonium and nitrate content in a calcareous soil solution L. B. FennE. Wu OriginalPaper Pages: 171 - 174
Effect of certain herbicides on soil microbial populations and their influence on saprophytic growth in soil and pathogenicity of take-all fungus P. MekwatanakarnK. Sivasithamparam OriginalPaper Pages: 175 - 180
