Table Of Content

Agriculture, Ecosystems and Environment, 37 (1991) 331-332 Elsevier Science Publishers B.V., Amsterdam Author Index Cilliers, C.J. (Pretoria, South Africa) Biological control of water hyacinth, Eichhornia crassipes (Pontederiaceae ), in South PRE: sciseteccsttbsciesanavsncoe cacti aisiak cso cseeasasnnaibsaiigbeaistdiei teoddetisacviecaacidnbaaslciadabedbbaalbaintatded s 207 Biological control of water fern, Sa/vinia molesta (Salviniaceae) , in South Africa ......... 219 Biological control of water lettuce, Pistia stratiotes (Araceae) , in South Africa .............. 225 Cilliers, C.J. and Neser, S. (Pretoria, South Africa) Biological control of Lantana camara (Verbenaceae ) in South Africa ......................ceeeee 57 Dennill, G.B. (Pretoria, South Africa) and Donnelly, D. (Stellenbosch, South Africa) Biological control of Acacia longifolia and related weed species (Fabaceae ) in South PUREE siiidcicemsisiaisiiorsisnipididedgain ecaltaduitaibnckbésceucbisstcae lueeutiiddevaesnadtehaabccunaiahbaastceeshinaeieen s 115 Donnelly, D., see Dennill, G.B. and Donnelly, D. Gordon, A.J. (Stellenbosch, South Africa) and Kluge, R.L. (Pietermaritzburg, South Africa) Biological control of St. John’s Wort, Hypericum perforatum (Clusiaceae) , in South PRN: siicinvssalethan si didaciamishanatlasbauibaiseiGhilaa rtieladmenuehi Gtekhesa cereetedancnnabshedincmtantndaeaxcbkobaiabbieeminnaivdinses 77 Hall, J.K., Mumma, R.O. and Watts, D.W. (University Park, PA, USA) Leaching and runoff losses of herbicides in a tilled and untilled field ..........................008 301 Hoffmann, J.H. and Moran, V.C. (Rondebosch, South Africa) Biological control of Sesbania punicea (Fabaceae ) in South Africa ...............ceeeeeeeeeeeeeees 157 Kluge, R.L. (Pietermartizburg, South Africa) Biological control of crofton weed, Ageratina adenophora (Asteraceae) , in South FIT sh tscdncinscstinessl ose vaSedSscsnccsaiaitatgeicseidalatsbac dia tchacand datas nitcaeada rash Unsleediceeeitian a cia cdacat ies asia aindae asdeteabadpsanaelacodaii 187 Biological control of triffid weed, Chromolaena odorata (Asteraceae) , in South Africa 193 Kluge, R.L. (Pietermaritzburg, South Africa) and Neser, S. (Pretoria, South Africa) Biological control of Hakea sericea (Proteaceae ) in South Affica .............ceeeeeceeeeeeeeeees 91 Kluge, R.L., see Gordon, A.J. and Kluge, R.L. Maller, R.A., see Taylor, G.B. et al. Moran, V.C. (Rondebosch, South Africa) and Zimmermann, H.G. (Pretoria, South Africa) Biological control of jointed cactus, Opuntia aurantiaca (Cactaceae), in South Africa .. 5 Biological control of cactus weeds of minor importance in South Africa .....................00 37 Moran, V.C., see Zimmermann, H.G. and Moran, V.C. see Hoffmann, J.H. and Moran, V.C. Morris, M.J. (Stellenbosch, South Africa) The use of plant pathogens for biological weed control in South Africa .....................000005 239 Mumma, R.O., see Hall, J.K. et al. Neser, S., see Cilliers, C.J. and Neser, S. see Kluge, R.L. and Neser, S. Olckers, T. (Uitenhage, South Africa) and Zimmermann H.G. (Pretoria, South Africa ) Biological control of silverleaf nightshade, Solanum elaeagnifolium, and bugweed, Solanum mauritianum, (Solanaceae ) in South Africa .................cccccceesceesseeceveceeeeeeeeeeneees 332 Rossiter, R.C., see Taylor, G.B. et al. Schoonbee, H.J. (Johannesburg, South Africa) Biological control of fennel-leaved pondweed, Potamogeton pectinatus CPPOTIIIIICTRIICORE) , 17) SOUTE ATTIOR iieoiscsceicccscconcccissiccsccccccosnesnstsssscssonsssosscscesenesessecnscesnse 231 Taylor, G.B., Maller, R.A. and Rossiter, R.C. (Wembley, W.A., Australia ) A model describing the influence of hard seededness on the persistence of an annual forage legume, in a ley farming system, in a mediterranean-type environment ............... 274 Van der Eerden, L.J. (Wageningen, Netherlands ) Fluoride content in grass as related to atmospheric fluoride concentrations: a I oslo di cia ccensdadessiecuvaenensvndeshii tyasessbnibcosvseednddsieisbedaevcewndeyncesitnnshe s Fe Watts, D.W., see Hall, J.K. et al. Zimmermann, H.G. (Pretoria, South Africa ) Biological control of spear thistle, Cirsium vulgare (Asteraceae) , in South Africa .......... 199 Biological control of mesquite, Prosopis spp. (Fabaceae), in South Africa ..................... 175 Zimmermann, H.G. (Pretoria, South Africa) and Moran, V.C. (Rondebosch, South Africa) Biological control of prickly pear, Opuntia ficus indica (Cactaceae) , in South Africa) ... 29 Zimmermann, H.G., see Moran, V.C. and Zimmermann, H.G. see Olckers, T. and Zimmermann, H.G.