1971 – 1980

1980

Barnard, RO &  WJ Fölscher 
Die versurende uitwerking van Ureum
Burger, AP 
Openingsrede
Buys, AJ &  GCH Venter 
Correlations between Bray 1 Bray 2 and Isfei soil-P extractants
Du Preez, PC &  HA Ranwell 
Misstofverbruik in Suid-Afrika
Easton, JS 
A brief review of the methods currently in use
Hyam, GFS 
Communication gaps
Kotzé, HA 
Die ekonomie van misstofverbruik by koring en kleingraanproduksie
Theron, EP 
The economics of fertiliser usage in cultivated pastures
Von Solms, JC
Voorsittersverslag

1979

Barnard, RO & WJ Fölscher 
Loging van elemente in lisimeters onder verskillende gewasse
Blamey, FPC 
A simple fortran IV program
Bruwer, JJ et al 
Misstoftoediening
Fouché, PS 
Kalkbehoefte
Joubert, DM 
Natuurwetenskap en natuurwetenskaplike
Nienaber, TF & JA Groenewald 
Finansiele aspekte van grondfosforopneming in mielieproduksie
Venter, GCH
Evaluation of low order yield responses

1978

Bruwer, JJ 
Landbou-energie strategie uitwissing of oorlewing
Bruwer, JJ & EWG Fleming 
The energy budget in the US food system
Cawood, WN 
Solar energy and its possible role in agricultural production
Craven, GH 
Medal holders function 1977 – Verhoogde opbrengste gister vandag en more
Cresswell, CF 
Biological energy processes in crop production
Dickinson, EB 
Agricultural Writing
Dickinson, EB 
Wheat development in the Orange Free State – some recollections
Du Toit, R 
The fertiliser industry – socialised or free enterprise
Du Toit, R 
The role of energy in the manufacture of fertiliser
Louw, GN 
Biological energy processes in animal production
Norton, JG 
Chairmans Report
Pretorius, PJVE
Opening Address

1977

Allison, JCS 
A method of deriving yield-nutrient response surfaces from simple fertiliser experiments
Anderson, SAG 
A critical review of the economic viability of the fertiliser industry in South Africa
Botha, JC & BG Russell 
The world’s potash industry as it relates to South Africa
Claassens, AS et al 
Bekalking van suurgrond met betrekking tot CaMg-verhouding
Coetzee, JGK 
Kalsium in sitrusverhouding
Farina, MPW 
Potassium requirements of maize in Natal 
Grewar, DM 
Opening Address
Hattingh, HS 
Die rol van kunsmis in die ekonomie van kontantgewasse
Kotzé, HA 
Boerderybestuur en finansiele beplanning. Die belangrikheid daarvan in die toekomstige stabiliteit van die boerdery nywerheid
Le Roux, J 
Potassium reactions in the soil
Norton, JG 
Chairman’s Report
Parsons, SD & AH Penderis 
Grass Feedlots
Parsons, SD 
The role of fertilised pastures in the economics of livestock industry in South Africa
Spies, PH 
‘n Bepaling van die ekonomiese status van die Suid-Afrikaanse landbou
Van Jaarsveld, AS & HR Steyn 
Die gebruik van die mielierekenaar in die voorspelling van droeland koringopbrengste in die somerreenstreek
Van Vuuren, AJ 
Relationship between specific resistance and specific conductance of soils
Van Vuuren, AJ 
The molybdenum-blue method
Verwey, JF & PC Nel 
Bemesting vog en die proteienproduksie van mielies
Wood, RA
Potassium in sugarcane production

1976

Anderson, SAG 
Chairman’s Report
Anderson, SAG 
The role of the fertiliser industry
Beyers, CP de L 
Interpretasie van sekere grondklassifikasie gegewens in terme van gewasproduksie in die winterreenstreek
Brook, CE 
Agricultural production and fertiliser usage in Swaziland
Bruwer, CJ 
Grondwerking invloed en orientering
De Beer, AG 
Mechanical aspects of cultivation
De Swardt, SJ & JR Seretlo 
The attitude of blacks towards science and agriculture
Du Bois, FG 
Grondklassifikasie en die praktiese boer
Elllis, F 
Beginsels van grondklassifikasie
Farina, MPW 
Some agronomic aspects of fertiliser and lime application
Hartzenberg, WF 
Opening Address
Koch, JT 
Soil physical and chemical aspects of tillage
Laker, MC 
Soil fertility and the potential for increased crop production in the South African homelands
Landless, BRG 
Zambian agriculture with emphasis on fertiliser usage
Mallett, JB 
General aspects of soil cultivation and possible future trends
Mohr, PG 
Toedieningsmetodes van kunsmis en landboukalk – agronomiese aspekte
Saayman, D 
Gewasproduksie in die lig van grondklassifikasie – wyndruiwe
Siemens, JC 
Mechanical aspects of applying fertiliser and lime
Thompson, GD 
Introduction and orientation
Van Marle, J 
Soil fertility and the potential for animal production in the South African homelands
Van Niekerk, BP & BE Eisenberg 
Row widths and planting rates of soybeans in the Eastern Free State
Verwey, JF & PC Nel
Invloed van bemesting op stronkverhoudings by mielies

1975

Altona, RE 
A review of some research contributions to agriculture by AE&CI Limited
Anderson, SAG 
Chairman’s Report 
Blommaert, KLJ 
Die rol van stikstof in die plant
Bornman, CH 
Calcium and Magnesium in die plant
Botha, ADP & JF Ranwell 
Bemestingsreaksies by mielies op ‘n witsandgrondserie met verwysing na_fosforopbouing
Buys, AJ 
Samevatting van knelpunte in die kalksituasie
Dijkhuis, FJ 
Nitrogen and crops and pastures
Farina, MPW 
Does soil testing pay in practice
Folscher, WJ 
Die toestand van suurgrond
Fouche, PS 
Neutralisering van suurgrond (teoreties)
Greeff, PF & JH Terblanche 
Stikstofbemesting van sagtevrugte en tafeldruiwe
Grobbelaar, N 
Die rol van stikstof in die plant
Grobbelaar, N 
Kalsium en Magnesium in die plant
Hyam, GFS & AH Penderis 
Nitrogen fertilisation of pastures and veld
Louw, H 
Stikstofomsettings en reaksies in die grond mikro-organismes sowel as die toksiese effekte daarvan
Mapham, WR 
Economic aspects of fertiliser use for maize
Moberley, PK & JH Meyer 
The amelioration of acid soils in the South_African sugar industry
Mohr, PJ 
Optimum soil levels for series of the Avalon and Hutton forms
Mrkusic, J 
The South African Phosphate manufacturing industry
Pretorius, JG et al 
The lime industry in South Africa
Ranwell, JF 
Response of eucaluptus grandis and eucalyptus salinga to fertlisation
Ranwell, HA 
Toekomstige ontwikkeling met betrekking tot die stikstofmark in Suid-Afrika
Roux, EH 
The South African Phosphate rock industry
Scott, JD 
Pasture development in South Africa
Skeen, JB 
The present world fertiliser situation and outlook till 1980
Sumner, ME 
Soil acidity and its agronomic implications
Theron, PF 
Openingsrede
Theron, EP 
Potential for radical improvement of the highland sourveld
Van Niekerk, PE le R & JF Ranwell 
Proewe met Fosfaat, Kalk en Gips
Van Vuuren, PJ 
Kwantitatiewe N-behoeftes van winterkoringkultivars
Volschenk, JE 
Stikstofbemesting van koring en groente
Von Solms, JC 
The South African Nitrogen industry in relation to the world market
Wolf, EVE
Kalsiumsilikaatreaksies

1974

Alexander, GI 
The beef cattle grazing industry in Northern Australia
Basson, AJ 
Openingsrede
Botha, ADP et al 
The importance of fertilisation when evaluating maize cultivators
Conradie, WJ& PJ Gouws 
Bemesting van semi-kortstrooikoring verbou onder besproeing in die Transvaal. Effek op graanopbrengs
Craven, GW & EW Laubscher 
Die rol en beweging van Fosfaat in die plant
Deist, J 
Reaksies van toegediende fosforkunsmiste in gronde
Du Toit, RJ 
Voorsittersverslag
Eksteen, LL 
Fosforbemesting van gewasse na aanleiding van navorsingsresultate
Farina, MPW & J le Roux 
The relationship between exchangeable Potassium and soil moisture in some important Natal soils
Harwin, GO 
Role of nutrition in beef cattle production
Hyam, GFS 
Grassland fertilisation and animal production projects – their development
Kraft, JJ 
Voggebruik en potensiele droestofproduksie van gewasse in die hoeveldstreek
Krumm, HE 
Krumm-Phosphate rock production at Langebaan
Luitingh, HC 
Certain aspects of the future development of the beef cattle industry
Luyt, L 
Presidentsrede
Mengel, K 
The effect of Potassium on the quality of plant products
Ranwell, JF et al 
A preliminary study on the response of timber in the Transkei to fertilisation
Van Jaarsveld, AS & JJ Human 
Die invloed van bogroeiverwydering op groenvoerproduksie van droeland winterkoring te Bloemfontein
Van Jaarsveld, AS & JJ Human
Die invloed van bogroeiverwydering op graanproduksie van droeland winterkoring te Bloemfontein

1973

Barnard, RO 
A rotating bench for glasshouse experimentation
Botha, ADP 
Toekomstige ontwikkeling ten opsigte van die fosformark
Du Toit, R 
Die rol van die kunsmis-nywerheid in die toekomstige ontwikkeling van landbou in Suid-Afrika
Du Toit, P 
Toekomstige ontwikkeling van die vleisnywerheid in Suid-Afrika
Du Toit, RJ 
Voorsittersverslag 
Eksteen, LL 
Die waarde van grondontleding en bemestingsproefresultate by voorligting
Farina, MPW & W Mapham 
The relationship between P soil test and maize yield on an avalon medium sandy loam
Grant, PM et al 
Soil acidity factors affecting maize yield in Rhodesia
Grobbelaar, N 
Die rol van Fosfor in die plant, en Fosfor behoeftes van die belangrikste akkerbougewasse
Grobler, JH 
Grondontleding en sinkopname deur mielieplante op verskillende grondtipes
Grobler, JH 
Reaksies van toegediende Fosfor draers in gronde
Hulme, S 
Toekomstige ontwikkeling van gewasproduksie in die algemeen in Suid-Afrika
Joubert, DM 
Toekomstige ontwikkeling van diereproduksie in die algemeen in Suid-Afrika
Luyt, L 
Openings en Presidentsrede
Möhr, PJ 
Guidelines for fertilisation of maize on soil series of the Avalon and Hutton forms I Phosphorus
Möhr, PJ 
Guidelines for fertilisation of maize – II Nitrogen
Möhr, PJ 
Guidelines for fertilisation of maize on soil series of the Avalon and Hutton forms III Potassium
Roux, EH 
Reserwes, ontginning en verwerking van Fosfate
Scholtz, AP 
Die toekomstige ontwikkeling van die mieliebedryf in Suid-Afrika
Skeen, JB 
Evaluating the P status of soils
Van Jaarsveld, ABS 
Die invloed op reenval op die droeland winterkoring te Bloemfontein
Venter, GCH et al 
Short-term effects of surface applied amendments on two acid sandy loam soils in the Eastern Transvaal highveld
Verbeek, WA
Toekomstige ontwikkeling van landbou in Suid-Afrika

1972

Basson, AJ 
Openingsrede
Beaufils, ER 
A contribution to plant physiological diagnosis
Benadé, DV 
Opening en Presidentsrede
Botha, ADP et al 
Sinkbenutting deur mielies uit verskillende bronne
Bouchet, RJ 
Potential and real evapotranspiration their use and practical application
Conroy, TR 
Economic aspects of the fertiliser industry in the Republic of South Africa
De Waal, JA 
De Waal-Voorsittersverslag
Dekkers et al 
Effect of liming and high phosphate application on plant growth on some Natal Oxisols
Farina, MPW et al 
The influence of Sulphur on the yield of a grass clover pasture fertilised different sources of Phosphorus
Jurgens, CA 
A look into the future
Kieser, PJ and SAG Anderson 
The economics of fertiliser manufacture in South Africa
Orchard, ER 
Some thoughts on soil acidity and liming
Skeen, JB et al
The maintenance of soil fertility with specific references to Nitrogen Phosphorus Potassium and Lime

1971

Altona, R 
The increase production artificial natural pastures fodder crops fertilisers
Beaufils, ER 
Physiological diagnosis guide improving maize production principles rubber trees
Dijkhuis, FJ 
Heat unit maize production Part I-Literature review
Dijkhuis, FJ 
Heat unit maize production Part II-Experimental results
Du Plessis, DF & R du T Burger 
Spesifieke adsorpsie koper deur aantal gronde
Joubert, DM 
Intensification animal production SA
Kearney, JP 
Presidential Address
Lombard, JH 
Management problems affecting utilisation high producing pastures fodder crops
Luitingh, HC 
Summary Conclusion
Roberts, BR 
The role animal soil fertility
Scholtz, O van G 
Chairman’s Report
Sinclair, DC 
Opening Address
Stielau, WJ
Fertilisers dry matter protein mineral requirements farm animals