Top Banner

Click here to load reader

South African Sugar Technologists' Association · PDF file the south african sugar technologists' association v officers of the south african sugar technologists' association vii....

Jun 23, 2020

ReportDownload

Documents

others

  • South African

    Sugar Technologists'

    Association

    Proceedings

    of the

    FORTY-FOURTH

    ANNUAL CONGRESS

    HELD AT MOUNT EDGECOMBE

    15th-19th JUNE, 1970

    The Copyright of these papers is the property of the Association

    The Association does not hold itself responsible for any of the opinions

    expressed in papers published herein

    Published by

    South African Sugar Technologists'

    Association

    SOUTH AFRICAN SUGAR ASSOCIATION EXPERIMENT STATION

    MOUNT EDGECOMBE, NATAL

    PRICE FOR EXTRA COPIES R5.00

    Printed in the Republic of South Africa by The Natal Witness (Pty) Ltd.

    Proc. Annual Cong. S. Afr. Sugar Tech. Ass. No. 44 pp. 1-216 Durban, 1970

  • Proceedings of The South African Sugar Technologists' Association —June 1970

    THE SOUTH AFRICAN SUGAR TECHNOLOGISTS' ASSOCIATION

    The South African Sugar Technologists' Association was

    founded in 1926. It is an organisation of technical

    workers and others directly interested in the technical

    aspect of the South African Sugar Industry. It operates

    under the aegis of the South African Sugar Association,

    but is governed under its own constitution by a Council

    elected by its members.

    The office of the Association is situated on premises

    kindly made available to it by the South African Sugar

    Association at the latter's Experiment Station at Mount

    Edgecombe.

  • Proceedings of the South African Sugar Technologists' Association — June 1970

    CONTENTS

    FRONTISPIECE ii

    THE SOUTH AFRICAN SUGAR TECHNOLOGISTS' ASSOCIATION V

    OFFICERS OF THE SOUTH AFRICAN SUGAR TECHNOLOGISTS' ASSOCIATION vii

    LIST OF MEMBERS AND GUESTS viii

    OPENING ADDRESS by D R . G. S. J. KUSCHKE ix

    REPLY by M R . A. A. LLOYD xii

    PRESIDENTIAL ADDRESS xii

    REPLY by M R . i. B. ALEXANDER xvii

    SI UNITS IN THE SUGAR FACTORY by G. N. ALLAN AND A. VAN HENGEL 21

    CONTAINERISATION by D. S. WILKES 30

    T H E FACTORY BALANCE by S.A.S.T.A. CHEMICAL CONTROL COMMITTEE 33

    A FACTORY CHLORIDE BALANCE by A. W. MACGILLIVRAY 36

    A SOLIDS BALANCE INVESTIGATION by E. L. MULLER . 40

    SYRUP WEIGHING AT EMPANGENI by R. D. ARCHIBALD AND M. A. KARLSON 46

    D R Y SOLIDS, SPINDLE AND REFRACTIVE BRIX DATA by G. D. M C G R A T H 48

    SOME IMPRESSIONS OF THE SUGAR INDUSTRIES OF MAURITIUS AND REUNION by J. R. GUNN 51

    NOTES ON AIR POLLUTION IN THE SUGAR INDUSTRY by B. ST. C MOOR 54

    WATER CONSERVATION IN SUGAR MILLS by D. J. L. HULETT 57

    STAINLESS STEEL IN THE SOUTH AFRICAN SUGAR INDUSTRY by C G. W. ROFFEY AND I. A. ELSDON-DEW . . 60

    THE INTERDEPENDENCE OF CANE PREPARATION, PARTICLE SIZE, DISPLACEABILITY, AND LIQUID HOLDUP IN FIXED BED DIFFUSERS b y R . W . REIN . . . . . . 6 4

    T H E MUTUAL CLARIFICATION PROJECT—PROGRESS REPORT No . 2 by L.M.S.A. JULLIENNE, M. MATIC AND M. TEOKAROVIC 71

    COMPOSITION OF SOUTH AFRICAN FINAL MOLASSES by A. W. MACGILLIVRAY AND M. MATIC 81

    FACTORS AFFECTING ENZYMATIC STARCH HYDROLYSIS IN SUGAR SOLUTIONS by I. A. SMITH 88

    DECOMPOSITION PRODUCTS OF ENZYMATIC STARCH HYDROLYSIS by J. BRUIN 94

    THE ISOLATION AND PARTIAL CHARACTERISATION OF OLI- GOSACCHARIDES IN REFINERY MOLASSES by P. G. MOREL DU BOIL, K. J. SCHAFFLER, G. W. COMRIE AND D. M. OOSTHUIZEN 98

    SOME ASPECTS OF FACTORY OPERATION AT THE TONGAAT SUGAR COMPANY FACTORY by G. G. CARTER, W. S. GRAHAM AND B. ST. C. MOOR 104

    TRIALS ON B.M.A. CONTINUOUS CENTRIFUGALS by G. G. CARTER 108

    IMBIBITION RE-CYCLING by M. H. PHIPSON . 1 1 4

    SUMMARY OF AGRICULTURAL DATA: SUGARCANE CROP 1968/69 AND 1969/70 by i. L. DU TOIT AND M. G. MURDOCH 117

    OPTIMUM IRRIGATION LEVELS FOR CANE UNDER BURNT AND TRASHED CONDITIONS Ay J. M. GOSNELL . . 121

    SOME ASPECTS OF THE USE OF PLASTIC PIPING IN LAND DRAINAGE by B. PITHEY 131

    STOOL POPULATIONS AND YIELD OF SUGARCANE UNDER IRRIGATED CONDITIONS AT PONGOLA by i. P. BOYCE 136

    THE TONGAAT FIELD DIARY — A USEFUL MANAGEMENT TOOL by J. N. S. H I L L 144

    THE RESULTS OF PRE-EMERGENCE HERBICIDE SCREENING TRIALS FOR SUGARCANE IN NATAL by F. E. RICHARDSON 148

    A COMPARISON OF METHODS OF PHOSPHATE APPLICATION TO RATOON CANE by P. K. MOBERLY AND G. H. WOOD . 155

    SOIL STERILIZATION AND THE GROWTH OF TOPS AND ROOTS AT THE MOUNT EDGECOMBE ROOT LABORATORY by J. GLOVER 162

    PERKINSIELLA SACCHARICIDA KIRKALDY (HOM: DELPHA- CIDAE) AN INSECT PEST OF SUGARCANE IN SOUTHERN A F R I C A ^ R . H . G . H A R R I S 169

    ALUMINIUM TOXICITY — A GROWTH LIMITING FACTOR IN SOME NATAL SANDS by M. E. SUMNER . . . . 1 7 6

    THE EFFECT OF SILICA ON CANE GROWTH by P. DU PREEZ 183

    T H E INFLUENCE OF WATTLE-BRUSH BURNING ON CANE GROWTH by J. H. MEYER 189

    A COMPARISON OF THE EFFECTS OF UREA AND SULPHATE OF AMMONIA ON SUGARCANE by J. M. GOSNELL . . 200

    LEAF SCALD DISEASE OF SUGARCANE IN SOUTH AFRICA by G. ROTH AND G. M. THOMSON 204

    WEATHER REPORT FOR THE YEAR 1ST JUNE, 1969 — 31ST MAY, 1970 b y J . GLOVER . . . . . . 208

  • Proceedings of The South African Sugar Technologists' Association —June 1970 vn

    OFFICERS 1970-71

    President T. G. CLEASBY

    Hon. Secretary (Mrs.) M. WELLS

    Life Patron DR. H. H. DOODS

    Vice-President J. B. ALEXANDER

    Hon. Technical Secretary D. J. COLLINGWOOD

    Former Presidents

    1926-27 M. Mc MASTER 1927-28 M. Mc MASTER 1928-29 H. H. DODDS 1929-30 H. H. DODDS 1930-31 G. S. MOBERLY 1931-32 G. C. DYMOND 1932-33 G. C. DYMOND 1933-34 B. E. D. PEARCE 1934-35 E. CAMDEN-SMITH 1935-36 G. C. WILSON 1936-37 G. C. WILSON 1937-38 J. RAULT 1938-39 P. MURRAY 1939-40 P. MURRAY 1940-41 E. P. HEDLEY

    1941-42 1942-43 1943-44 1944-45 1945-46 1946-47 1947-48 1948-49 1949-50 1950-51 1951-52 1952-53 1953-54 1954-55 1955-56

    F. W. HAYES A. MCMARTIN G. BOOTH G. S. MOBERLY G. S. MOBERLY W. BUCHANAN W. BUCHANAN J. L. DU TOIT H. H. DODDS A. MCMARTIN G. C. DYMOND G. C. DYMOND G. C. DYMOND G. C. DYMOND J. B. GRANT

    1956-57 1957-58 1958-59 1959-60 1960-61 1961-62 1962-63 1963-64 1964-65 1965-66 1966-67 1967-68 1968-69 1969-70

    J. B. GRANT J. P. N. BENTLEY J. P.N. BENTLEY J. P. N. BENTLEY J. L. DU TOIT J. L. DU TOIT J. L. DU TOIT J. R. GUNN J. R. GUNN J. R. GUNN L. F. CHIAZZARI L. F. CHIAZZARI T. G. CLEASBY T. G. CLEASBY

    Former Vice-Presidents

    1926-27 1927-28 1928-29 1929-30 1930-31 1931-32 1932-33

    L. E. ROUILLARD H. H. DODDS G. S. MOBERLY G. S. MOBERLY G. C DYMOND A. C. WATSON A. C. WATSON

    1934-34 J" G. C. DYMOND "\ E. CAMDEN-SMITH

    1934-35 1935-36 1936-37 1937-38 1938-39 1939-40 1940-41

    B. E. D. PEARCE E. CAMDEN-SMITH J. RAULT P. MURRAY E. P. HEDLEY E. P. HEDLEY F. W. HAYES

    1941-42 1942-43 1943-44 1944-45 1945-46 1946-47 1947-48 1948^19 1949-50 1950-51 1951-52 1952-53 1953-54 1954-55 1955-56

    {

    A. MCMARTIN 1956-57 G. BOOTH 1957-58 F. B. MACBETH 1958-59 G. BOOTH 1959-60 W. BUCHANAN 1960-61 G. C. DYMOND 1961-62 G. C. DYMOND 1962-63 G. C. DYMOND 1963-64 J. L. DU TOIT 1964-65 O. W. M. PEARCE 1965-66 O. W. M. PEARCE 1966-67 K. DOUWES-DEKKER 1967-68 J. B. GRANT 1968-69 K. DOUWES-DEKKER 1969-70 G. C. DYMOND

    W. G. GALBRAITH

    W. G. GALBRAITH J. L. DU TOIT J. L. DU TOIT J. L. DU TOIT J. DICK J. P. N. BENTLEY J. P. N. BENTLEY L. F. CHIAZZARI L. F. CHIAZZARI L. F. CHIAZZARI T. G. CLEASBY T. G. CLEASBY J. B. ALEXANDER J. B. ALEXANDER

    J. B. ALEXANDER G. S. BARTLETT J. P. N. BENTLEY L. F. CHIAZZARI

    Council of the Association

    T. G. CLEASBY D. J. COLLING WOOD J. L. DU TOIT J. R. GUNN

    D. J. L. HULETT W. B. KRAMER T. R. LOUDON M. MATIC

    G.W. SHUKER G. D. THOMPSON J. WILSON

  • viii Proceedings of The South African Sugar Technologists' Association — June

    List of members and guests who attended the

    Forty-fourth Congress 15th-19th June, 1970

    ABEL, E. J. M. ALEXANDER, H. P. ALEXANDER, J. B. ALEXANDER, K. E. F. ALLAN, G. N. ANDERSON, J. ANDERSON, N. ANDRIES, P. A. ASHE, G. G.

    BAILEY, E. D. BANI ABBASSI, N. BARNES, A. C. BARTLETT, G. S. BAX, G. BEATER, B. E. BENTLEY, J. P. N. BERGH, P. BISHOP, R. T. BLACK, W. B. BLAKE, B. V. BOAST, W. B. BOND, R. S. BOOYSEN, S. S. BOURNE, J. H. BOWES, N. I. BOYCE, J. P. BRETT, P. G. C. BREWITT, A. J . D. BRIGGS, R. H. BROKENSHA, M. A. BROMLEY, C. K. BROWNE, E. L. BROWN, J. W. BROWN, P. W. BROUARD, J. E. P. BRUCE, N. E. BRUIJN, J. BUCHANAN, E. J. BULLOCK, J. S. BURNS, R. F. BYARD, W. E. BYRNE, L. G.

    CAIRNS, P. A. CAMDEN-SMITH, D. CAMPBELL, R. CARGILL, J. M. CARNEGIE, A. J. M. CARR, R. J. CARREYETT R. A. CARTER, G. G. CHADWICK, J. K. CHANCE, W. J. F. CHIAZZARI, L. F. CHRISTIANSON, W. O. CLEASBY, T. G. CLUTTERBUCK, N. F. COETZEE, D. J. COLE, E.

    COLLINGWOOD, D. J . COLLINGWOOD, R. J. COMRIE, G. W. CONUN, G. H. COURTS, B. COUVE, J. COVAS, T. CROOKES, D. V. CROOKES, L. N. CROOKES, P. J. CROOKES, P. J. M.

    DANESH DEZFULI, A. R. DAHL, R. G. DAVIES, W. F. DAWES, V. H. DECKER, G. DEDEKIND, E. T. J. DENNY, M. E. DENT, C. E. D'HOTMANDE VlLLIERS, O Mc. D. DICK, J. DICK, J. DODDS, H. H. DOUGLAS, E. DOVEY, P. A. DUCKWORTH, J. R. DUNSMORE, (MRS.) A. DURANDT, H. K. DEFROBERVILLE, P. DE RAUVILLE, F. DE ROBILLARD,

Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.