Microbiological regulation of the biogeochemical nitrogen cycle T. Rosswall OriginalPaper Pages: 15 - 34
Simulation of nitrogen in agro-ecosystems: Criteria for model selection and use P. S. C. RaoR. E. JessupA. G. Hornsby OriginalPaper Pages: 35 - 43
Nitrogen in shifting cultivation systems of Latin America P. A. Sánchez OriginalPaper Pages: 91 - 103
Nitrogen distribution in several traditional agro-ecosystems in the humid tropical lowlands of south-eastern Mexico S. R. Gliessman OriginalPaper Pages: 105 - 117
Nitrogen distribution in hybrid and local corn varieties and its possible relationship to a declining soil nitrogen pool under shifting agriculture at Indian Church, Belize J. D. H. LambertJ. T. Arnason OriginalPaper Pages: 119 - 127
15N-urea transport and transformation in two deforested Amazonian soils under laboratory conditions R. L. VictoriaP. L. LibardiE. Matsui OriginalPaper Pages: 129 - 137
Nitrogen gains and losses in sugarcane (Saccharum sp.) agroecosystems on the coast of Peru S. Valdivia V OriginalPaper Pages: 147 - 156
Potential growth of alfalfa (Medicago sativa L.) in the desert of Southern Peru and its response to high NPK fertilization M. N. VersteegI. ZiporiH. Valdivia OriginalPaper Pages: 157 - 165
Crop utilization and fixation of added ammonium in soils of the West Indies N. AhmadE. D. ReidL. Gabriel OriginalPaper Pages: 167 - 186
Distribution of15N fertilizer in field-lysimeters sown with garlic (Allium sativum) and foxtail millet (Setaria italica) M. A. Lazzari OriginalPaper Pages: 187 - 191
Nitrogen cycling in a15N-fertilized bean (Phaseolus vulgaris L.) crop P. L. LibardiR. L. VictoriaA. Cervellini OriginalPaper Pages: 193 - 208
Nitrogen cycling in a flooded-soil ecosystem planted to rice (Oryza sativa L.) K. R. Reddy OriginalPaper Pages: 209 - 220
The nitrogen balance of vegetable crops irrigated with untreated effluent E. Schalscha B.I. Vergara F. OriginalPaper Pages: 221 - 226
Research into the Rhizobium/Leguminosae symbiosis in Latin America J. R. Jardim Freire OriginalPaper Pages: 227 - 239
Nitrogen cycle of tropical perennial crops under shade trees J. ArangurenG. EscalanteR. Herrera OriginalPaper Pages: 247 - 258
Nitrogen cycle of tropical perennial crops under shade trees J. ArangurenG. EscalanteR. Herrera OriginalPaper Pages: 259 - 269
Dynamics of nitrogen in a shaded cacao plantation M. B. M. SantanaP. Cabala-Rosand OriginalPaper Pages: 271 - 281
Nitrogen balance in the Trachypogon grasslands of Central Venezuela E. Medina OriginalPaper Pages: 305 - 314
Net primary productivity and nitrogen and carbon distribution in two xerophytic communities of central-west Argentina R. H. Braun Wilke OriginalPaper Pages: 315 - 323
The nitrogen cycle in a ‘Terra Firme’ rainforest on oxisol in the Amazon territory of Venezuela C. JordanW. CaskeyC. Uhl OriginalPaper Pages: 325 - 332
Nitrogen cycling in the seasonally dry forest zone of Belize, Central America J. T. ArnasonJ. D. H. Lambert OriginalPaper Pages: 333 - 342
Seasonal dynamics of nitrogen cycling for a Prosopis woodland in the Sonoran Desert P. W. RundelE. T. NilsenG. B. Shearer OriginalPaper Pages: 343 - 353
Litterfall and nitrogen turnover in an Amazonian blackwater inundation forest U. Irmler OriginalPaper Pages: 355 - 358
Nitrogen in litterfall and precipitation and its release during litter decomposition in the Chilean piedmont matorral R. E. CisternasL. R. Yates OriginalPaper Pages: 359 - 365
Regional gains and losses of nitrogen in the Amazon basin E. SalatiR. Sylvester-BradleyR. L. Victoria OriginalPaper Pages: 367 - 376
Report of work group shifting cultivation and traditional agriculture S. R. GliessmanJ. D. H. LambertP. A. Sanchez Work Group Reports Pages: 389 - 394
Report of the work group on sugarcane A. P. RuschelF. R. TamasS. Valdivia-Vega Work Group Reports Pages: 395 - 397
Report of the work group on cereal and grain crops A. A. FrancoJ. R. Jardim FreireR. L. Victoria Work Group Reports Pages: 399 - 402
Report of the work group on coffee and cacao plantations J. P. RoskoskiE. BornemiszaM. B. M. Santana Work Group Reports Pages: 403 - 407
Report of the work group on savannas and shrublands L. R. YatesP. W. RundelR. E. Cisternas Work Group Reports Pages: 409 - 413
Report of the work group on Latin American forests B. L. BentleyR. HerreraE. Sanhueza Work Group Reports Pages: 415 - 420
Report of the work group on wetlands (including rice) and aquatic systems K. R. ReddyV. MontecinoH. W. Wilson Work Group Reports Pages: 421 - 424