In vitro propagation of the nitrogen-fixing tree-legume Acacia mangium Willd. A. GalianaA. TibokE. Duhoux OriginalPaper Pages: 151 - 159
Nitrogen-fixing potential of micropropagated clones of Acacia mangium inoculated with different Bradyrhizobium spp. strains A. GalianaA. TibokE. Duhoux OriginalPaper Pages: 161 - 166
Root growth inhibition effects of holorganic moder humus layer under spruce (Picea abies KARST.) and beech (Fagus sylvatica L.) F. WeissenH. J. Van Praag OriginalPaper Pages: 167 - 174
Root growth inhibition of the holorganic layer of moder humus under spruce (Picae abies KARST.) and beech (Fagus Silvatica L.) H. J. van PraagJ. C. MotteF. Weissen OriginalPaper Pages: 175 - 183
A re-examination of phosphorus-lime interactions in perennial ryegrass J. S. Bailey OriginalPaper Pages: 185 - 196
The significance of root development of spinach and kohlrabi for N fertilization M. SchenkB. HeinsB. Steingrobe OriginalPaper Pages: 197 - 203
Influence of nitrate concentration at the root surface on yield and nitrate uptake of kohlrabi (Brassica oleracea gongyloides L.) and spinach (Spinacia oleracea L.) B. SteingrobeM. K. Schenk OriginalPaper Pages: 205 - 211
Influence of adenine, isopentyl alcohol and Azotobacter chroococcum on the vegetative growth of Zea mays K. F. NietoW. T. Frankenberger Jr. OriginalPaper Pages: 213 - 221
Nitrogen form and silicon nutrition effects on resistance to blast disease of rice F. J. Osuna-CanizalezS. K. De DattaJ. M. Bonman OriginalPaper Pages: 223 - 231
CO2 Exchange in soil algal crusts occurring in the trachypogon savannas of the Orinoco Llanos, Venezuela J. J. San JoséC. R. Bravo OriginalPaper Pages: 233 - 244
Competitiveness of indigenous populations of Bradyrhizobium japonicum serocluster 123 as determined using a root-tip marking procedure in growth pouches T. R. McDermottP. H. GrahamM. L. Ferrey OriginalPaper Pages: 245 - 250
Organic nitrogen content and nitrate and nitrite reductase activities in tritordeum and wheat grown under nitrate or ammonium F. BarroA. G. FontesJ. M. Maldonado OriginalPaper Pages: 251 - 256
Above- and belowground organic matter storage and production in a tropical pine plantation and a paired broadleaf secondary forest Elvira CuevasSandra BrownAriel E. Lugo OriginalPaper Pages: 257 - 268
Growth, micronutrient content and vesicular-arbuscular fungi infection of herbaceous plants on lignite mine spoils: A greenhouse pot experiment J. ArinesA. Vilariño OriginalPaper Pages: 269 - 273
Response of sweet pepper to phenols accumulated in greenhouse substrate B. PolityckaD. Wójcik-Wojtkowiak OriginalPaper Pages: 275 - 282
Effect of nickel deficiency in soybeans on the phytotoxicity of foliar-applied urea M. J. KrogmeierG. W. McCartyJ. M. Bremner OriginalPaper Pages: 283 - 286
Maize and pigweed response to nitrogen supply and form R. H. TeykerH. D. HoelzerR. A. Liebl OriginalPaper Pages: 287 - 292
Effect of hand-hoeing and application of herbicides on nodulation, nodule activity and grain yield of Lens culinaris Med. P. S. SandhuK. K. DhingraR. P. Gupta OriginalPaper Pages: 293 - 296
Long fallow periods: The key to sustenance of soil fertility? M. Ananda P. De SilvaS. A. KulasooriyaR. P. Gunawardane OriginalPaper Pages: 297 - 302
Promotion of growth of wheat seedlings by a sterile red fungus in relation to plant density and soil fertility M. M. DewanK. Sivasithamparam OriginalPaper Pages: 306 - 308