Variability within the chemical analysis of horticultural substrates R. MoermansR. Gabriëls OriginalPaper Pages: 321 - 324
Effect of plant nutrient supply on nodule effectiveness and rhizobium strain competition for nodulation ofLotus pedunculatus C. E. Pankhurst OriginalPaper Pages: 325 - 339
Actinomycetous root nodules in angiosperms of Pakistan Ashraf H. ChaudharyShahida N. KhokharFauzia Hafeez OriginalPaper Pages: 341 - 348
The isolation of effective and ineffective mutants of cowpea rhizobium P. M. Williams OriginalPaper Pages: 349 - 356
Tissue Fe/Zn ratio as a diagnostic tool for prediction of Zn deficiency in crop plants K. K. M. NambiarD. P. Motiramani OriginalPaper Pages: 357 - 367
Distribution and cycling of sulphur in the vegetation of two forest ecosystems in an acid rain environment K. J. MeiwesP. K. Khanna OriginalPaper Pages: 369 - 375
Effect of phytotoxic metabolites ofFusarium culmorum on growth and physiology of barley plants M. KatouliR. Marchant OriginalPaper Pages: 377 - 384
Effect of phytotoxic metabolites ofFusarium culmorum on barley root and root-hair development M. KatouliR. Marchant OriginalPaper Pages: 385 - 397
Development of resistance in slow-growing rhizobia to 1-naphthyl-N-methyl carbamate (sevin) K. G. GuptaC. K. Shirkot OriginalPaper Pages: 399 - 407
Structure and seasonal distribution of litterfall in young plantations of Populus ‘Tristis#1’ J. Zavitkovski OriginalPaper Pages: 409 - 422
Influence of soil applications of nitrogen on nitrate reductase activity, leaf and grain protein content in sorghum Christianah O. Ajakaiye OriginalPaper Pages: 423 - 434
Mineral-element composition ofLupinus albus andLupinus angustifolius in relation to manganese accumulation P. F. ReayC. Waugh OriginalPaper Pages: 435 - 444
Effect of soil moisture stress on legume-rhizobium symbiosis in soybeans T. R. RathoreP. K. ChhonkarB. P. Ghildyal OriginalPaper Pages: 445 - 450
Effects of ethrel on the formation and responses to VA mycorrhiza in Medicago and Triticum C. Azcon-AguilarD. N. Rodriguez-NavarroJ. M. Barea OriginalPaper Pages: 461 - 468
Potassium accretion byPinus contorta on oligotrophic peat in the west of Ireland M. L. CareyNiall O'Carroll Short Communications Pages: 471 - 475
Effect of long-term NPK application on secondary and micro nutrient contents ofCoffea canephora Pierre S. O. Ojeniyi Short Communications Pages: 477 - 480
Effect of iron and manganese application on the availability of micronutrients to rice in sodic soil Anand Swarup Short Communications Pages: 481 - 485
The use of soils lightly enriched in15N to screen for N2-fixing activity Daniel H. KohlGeorgia B. Shearer Short Communications Pages: 487 - 489