Interaction of nitrate uptake and nitrogen fixation in faba beans Henning Kage Research Article Pages: 189 - 196
CaCl2 extractable N fractions and K2SO4 extractable N released on fumigation as affected by green manure mineralization and soil texture Thomas AppelIstvan SisakMarieluise Hermanns-Sellen Research Article Pages: 197 - 203
Rooting characteristics of lettuce grown in irrigated sand beds D. SchwarzM. HeinenM. Van Noordwijk Research Article Pages: 205 - 217
Effects of calcium on growth and leaf ion concentrations of Gossypium hirsutum grown in saline hydroponic culture J. GorhamJ. Bridges Research Article Pages: 219 - 227
The calcium nutrition of bambara groundnut (Vigna subterranea (L.) Verdc.) M. van der StratenW. G. KeltjensE. Westphal Research Article Pages: 229 - 234
Cultivar and planting date effects on soybean root growth P. C. TurmanW. J. WieboldP. W. Tracy Research Article Pages: 235 - 241
Differential sensitivity of plant-associated bacteria to sulfonylurea and imidazolinone herbicides G. ForlaniM. MantelliF. Favilli Research Article Pages: 243 - 253
Influence of radiata pine seedlings on chemical properties of some New Zealand montane grassland soils M. R. Davis Research Article Pages: 255 - 262
Bulk soil pH and rhizosphere pH of peach trees in calcareous and alkaline soils as affected by the form of nitrogen fertilizers Massimo TagliaviniAndrea MasiaMaurizio Quartieri Research Article Pages: 263 - 271
Activity of nitrifying populations in grassland soil polluted by polychlorinated biphenyls (PCBs) Ladislav Dušek Research Article Pages: 273 - 282
Effects of extracts of Alnus glutinosa seeds on growth of Frankia strain ArI3 under static and fermentor culture conditions Einar RingøEinar ClausenBjørn Solheim Research Article Pages: 283 - 288
Effect of long-term application of animal manure on physical properties of three soils O. H. DarwishN. PersaudD. C. Martens Research Article Pages: 289 - 295
Reversibility of damages to forest floor plants by episodes of elevated hydrogen- and aluminium-ion concentrations in the soil solution Maud E. Quist Research Article Pages: 297 - 305
Wheat genotypes differ in Zn efficiency when grown in chelate-buffered nutrient solution Zdenko RengelRobin D. Graham Research Article Pages: 307 - 316
Wheat genotypes differ in Zn efficiency when grown in chelate-buffered nutrient solution Zdenko RengelRobin D. Graham Research Article Pages: 317 - 324
VA-mycorrhiza mediated P effect on growth and yield of sunflower (Helianthus annuus L.) at different P levels C. P. ChandrashekaraV. C. PatilM. N. Sreenivasa Short Communication Pages: 325 - 328
Diagnosis of zinc deficiency in seedlings of a tropical eucalypt (Eucalyptus urophylla S. T. Blake) B. DellXu Daping Short Communication Pages: 329 - 332