16 November 2010 NZ loses its first soil science professor

A father figure in modern New Zealand soil science, Emeritus Professor Thomas William Walker, popularly known through his television appearances as “The Prof”,  died in Christchurch on 8 November, aged 94. 

Professor Walker came to Lincoln University from Britain in 1952 to take up New Zealand’s first university professorship specifically in soil science. He had been selected in London by Professor Eric Hudson, Director of Canterbury Agricultural College, as Lincoln University was in those days.

He was appointed Emeritus Professor of Soil Science at Lincoln University on his retirement in 1979 after a total of  27 years of service at the University spread over two periods.

Professor Walker combined the mana of the eminent scientist with the down-to-earth affability of the Kiwi, while never losing his essentially English characteristics of ready humour and self-deprecation.  He was a respected and beloved figure within and beyond the academic community and deeply committed to his family.

He won the highest accolades in academe, including fellowships of learned societies and  gold medals, and was honoured by the Queen by being made an Officer of the New Zealand Order of Merit.

Professor Walker combined the mana of the eminent scientist with the down-to-earth affability of the Kiwi, while never losing his essentially English characteristics of ready humour and self-deprecation. He was a respected and beloved figure within and the beyond the academic community and deeply committed to his family, who called him “Baba”.

Family members say:  “He was small in stature but larger than life and passionate about four things  -  his wife Edna, his work, his fishing, and the soil  -  the soil in his own garden and the soils of New Zealand.

“He believed in science and wanted to make it easy for everyone to understand and use science, and he was good at communicating his knowledge and enthusiasm.

“He died at his Christchurch home, overlooking the garden he and Edna created, surrounded by those he loved and who loved him.”

TW Walker was born in Shepshed, Leicestershire, England, in 1916 and educated at nearby Loughborough Grammar School where he topped the country in an open examination for a Royal Scholarship in Chemistry. That scholarship took him to the Royal College of Science, London, where he did both a BSc with First Class Honours then a PhD in Agricultural Chemistry  within four-and-a-half years, motivated to complete his studies swiftly by his desire to marry his childhood sweetheart, Edna.

A research fellowship enabled him to pursue post-doctoral work for two years at Rothamsted Experimental Station. He spent the war years as a scientist engaged in the British Government’s  national food production programme. His first university appointment was as a lecturer in agricultural chemistry at Manchester University.

In 1946 he joined the newly formed National Agricultural Advisory Service as Provincial Advisory Soil Chemist in the West Midlands.

He arrived in New Zealand at the start of 1952 with wife Edna and family of then three daughters (a fourth daughter was born in New Zealand). His research focus was on the nitrogen economy of legume based pastures, an interest which had been kindled in the UK.

In New Zealand he became a strong proponent of biological nitrogen fixation and much of his research, and that of his staff and students, was concerned with the correction of nutrient deficiencies, such as sulphur, molybdenum and phosphorus limiting the growth of legumes and as a consequence, nitrogen build up in soils.

The pattern of clover responses to these nutrients interested Professor Walker and his colleague Arthur Adams in the genesis and classification of soils.

He was extremely active in extension activities and famous for his addresses to farmers and farmer groups at country shows, in woolsheds, and small town community halls.  Even after retirement he was still going strong, for example in 1996 he gave 37 lectures to farmers and others at venues throughout the country.

Outside of work, fishing was a great passion and a recreation he enjoyed in the company of College colleagues. He often joked that it was really the fishing that had brought him to New Zealand!

He was a communicator par excellence  and his public speaking skills were legendary.  They were developed, he once related, through listening to the great preachers of the day during his youth in England.  These old time preachers always had humour, he said,  “so I put humour into my talks and it worked.  I found I loved talking, and I did a lot of it!”  

Through television and Maggie’s Garden Show “The Prof” became something of a national institution. Much of the material was filmed at his Christchurch home where he maintained an extensive vegetable garden which fed his entire extended family. This television career followed earlier media work as a newspaper gardening correspondent and radio broadcaster.

At a 90th birthday celebration for “The Prof” at Lincoln University, the then head of the Soil and Physical Sciences Group, Dr John  Adams, said he regarded Emeritus Professor Walker as the greatest communicator in New Zealand science.  He said the quality of his scientific work had stood the test of time and his scientific papers were still highly relevant and compelling.

Professor Walker’s great legacy to Lincoln University was the establishment of a strong, cohesive and happy Soil Science Department. When he started at Canterbury Agricultural College in 1952 the Soil Science Department had a staff of three. When he retired in 1979 the lecturing staff in soil science had expanded to 12. 

Professor Walker was a Fellow of the NZ Institute of Chemistry, Fellow of the NZ Institute of Agricultural Science and Fellow of the NZ Society of Soil Science.  He held a British Council Prestige Fellowship in 1964 and a Fulbright Fellowship in 1968.

In 1997 he was awarded both Lincoln University’s top medal for advancing New Zealand’s interests, the  Bledisloe Medal, and the Royal Society of New Zealand’s top award for scientific distinction, the Rutherford Gold Medal.  In 2003 he was awarded the Jubilee Medal for significant contributions to agricultural science, presented by the NZ Institute of Agricultural and Horticultural Science. 

In retirement Professor Walker remained active as a scientific consultant,  continued with public speaking and lecturing engagements, became the public face of white clover advocacy for Ravensdown, did his television work, and kept up his fishing and gardening.

He regularly attended university functions and was at the dinner for the inaugural presentation of the Lincoln University Medals in 2009. This year,   not long before his 94th birthday,  he attended the Bledisloe Medal recipients’ luncheon. It was his last public engagement with the University. 

Emeritus Professor Walker is survived by his wife Edna (the couple received a 70th wedding anniversary card from Her Majesty The Queen this year), daughters Jennifer, Pamela, Judy and Penny, 10 grandchildren and five great-grandchildren. 

A private family funeral service has already been held. A memorial service for those who wish to remember “The Prof” will be held on Monday 22 November at midday  in the Stewart Building at Lincoln University, his much-loved place of work.

In recognition of Professor Walker’s commitment to research and in appreciation of the care given by Harakeke to his wife, there will be an opportunity to make donations to Canterbury Geriatric Medical Research Trust and Harakeke Dementia Care Unit.

Obituary  -
Emeritus Professor Thomas William Walker,  1916 - 2010

Lincoln University was saddened to learn of the death on 8 November of its longest serving Emeritus Professor and one of its truly legendary figures, soil scientist Thomas William Walker,  known variously as “Tom” Walker,  “TW” Walker, “John” Walker or “The Prof”.

He was aged 94 and had been Emeritus Professor of Soil Science since his retirement in 1979, after two periods of service, totalling 27 years,  in the Chair of Soil Science.

Professor Walker came to Lincoln University from Britain in 1952 to take up New Zealand’s first university professorship specifically in soil science. He had been selected in London by Professor Eric Hudson, Director of Canterbury Agricultural College, as Lincoln University was in those days.

“The Prof” was a larger than life character who became one of Lincoln University’s national identities, inspiring and entertaining all who had contact with him.  In many ways he never really retired from the University but was a frequent visitor back to the campus on all sorts of missions  and occasions. As he himself said when he returned for a 90th birthday afternoon tea with the staff: “My job has always been my hobby. If you can say that, then you can say that you have had a good life”. 

Professor Walker combined the mana of the eminent scientist with the  down-to-earth affability of the Kiwi, while never losing his essentially English characteristics of ready humour and self-deprecation .

He won the highest accolades in academe, including fellowships of learned societies and  gold medals, and he was publicly honoured by Her Majesty The Queen by being made an Officer of the New Zealand Order of Merit, but he chose to celebrate the milestone of his 90th birthday in 2006 with the simplicity of a large homemade pork pie  -  a famous delicacy  in his native Leicestershire  -  enjoyed in the company of his beloved family.

To merely recite Professor Walker’s career details would be to neglect his colourful personality, the enthusiasm he brought to his department and the campus,  the formative impact he had on his students and colleagues, and the immense scientific contributions he made to his disciplinary field and to  New Zealand agriculture.

“TW” was born in Shepshed, Leicestershire, in  1916 and educated at nearby Loughborough Grammar School where he topped the country  in an open examination for a Royal Scholarship in Chemistry. This scholarship took him to the Royal College of Science, London, where he completed a BSc with First Class Honours then did a  PhD in Agricultural Chemistry studying soil solutions and mechanisms of ion uptake in experimental plots at the Royal Horticultural Society’s Wisley gardens.

A Salters’ Research Fellowship enabled him to pursue post-doctoral research for two years at Rothamsted Experimental Station. He spent the war years engaged in the British Government’s  national food production programme, applying his knowledge and research skills to boosting wartime food output.  His first university appointment was as a lecturer in agricultural chemistry at Manchester University, a post taken up during the war.

In 1946 he joined the newly formed National Agricultural Advisory Service as Provincial Advisory Soil Chemist in the West Midlands.

He arrived in New Zealand at the start of 1952 with wife Edna and family of then three daughters (a fourth daughter was born in New Zealand). His research focus was on the nitrogen economy of legume based pastures, an interest which had been kindled with pasture investigations in Herefordshire in the UK.

In New Zealand he became a strong proponent of biological nitrogen fixation and much of his research, and that of his staff and students, was concerned with the correction of nutrient deficiencies, such as sulphur, molybdenum and phosphorus limiting the growth of legumes and as a consequence, nitrogen build up in soils.

Explaining the pattern of clover responses to these nutrients interested Professor Walker and his colleague Arthur Adams in the genesis and classification of soils. 

He was extremely active in extension activities and famous for the energy and enthusiasm he showed for speaking to farmers and farmer groups at country shows, in woolsheds, and small town community halls.  Even after retirement he was still going strong, for example in 1996 he gave 37 lectures to farmers and others at venues throughout the country.

Outside of work, fishing was a great passion and a recreation he enjoyed in the company of College colleagues. He often joked that it was really the fishing that had brought him to New Zealand in the first place.

He was a communicator par excellence  and his public speaking skills were legendary.  They were developed, he once related, through listening to the great preachers of the day during his youth in England.  These old time preachers always had humour, he said,  “so I put humour into my talks and it worked.  I found I loved talking, and I did a lot of it!”  Many recall his address at the 1997 Graduation Ceremony in Christchurch Town Hall, the year he was awarded the Bledisloe Medal.  Speaking  without any notes he held the full auditorium in the palm of his hand, his audience captivated, entranced and entertained.

In the modern medium of television he was equally instructive and  entertaining and through Maggie’s Garden Show  “The Prof”  became something of a national institution. Much of the material was filmed at his Christchurch home where he maintained an extensive vegetable garden which, he was always proud to say, fed his entire extended family. This television career followed earlier long-running media work as a newspaper gardening correspondent and radio broadcaster.

At his 90th birthday celebration at Lincoln University, the then head of the Soil and Physical Sciences Group , Dr John  Adams, said he regarded Professor Walker as the greatest communicator in New Zealand science.  He said the quality of his scientific work had stood the test of time and his scientific papers were still highly relevant and compelling.

On a lighter note, and in relation to public speaking,  Professor Walker recently joked that success  in public speaking was simply a matter of following the first three letters of the alphabet and the last three  -  Always Be Cheerful and Examine Your Zip! 

Within the Lincoln University context Professor Walker’s great legacy was to establish a strong, cohesive and happy Soil Science Department. When he started at Canterbury Agricultural College in 1952 the Soil Science Department had a staff of three. When he retired in 1979 the lecturing staff in soil science had expanded to 12. 

Professor Walker was a Fellow of the NZ Institute of Chemistry, Fellow of the NZ Institute of Agricultural Science and Fellow of the NZ Society of Soil Science.  He held a British Council Prestige Fellowship in 1964 and a Fulbright Fellowship in 1968.

In 1997 he was awarded both Lincoln University’s top medal for advancing New Zealand’s interests, the  Bledisloe Medal, and the Royal Society of New Zealand’s top award for scientific distinction, the Rutherford Gold Medal.  In the New Year Honours List of 2000 he was made an Officer of the New Zealand Order of Merit (ONZM) for services to soil science. In 2003 he was awarded the Jubilee Medal for significant contributions to agricultural science, presented by the New Zealand Institute of Agricultural and Horticultural Science.  Four medals in total,  “One for each daughter,” he would say.

Professor Walker held the Chair in Soil Science at Canterbury Agricultural College twice.  He was appointed foundation professor in 1952 then in 1958 he was invited to apply for the position of Professor of Agriculture at King’s College, Newcastle-on-Tyne, part of the University of Durham.  While in that position he submitted his New Zealand research papers for a Doctor of Science degree, which was subsequently awarded by the University of London.

In 1960, with the family not as settled in the UK as they thought they would be,  he again applied for the Chair of Soil Science at Lincoln  -  still vacant following his departure. He was reappointed and the family returned to New Zealand.  Inspired by contact with English pedologist Edward Crompton while at Newcastle-on-Tyne, Professor Walker embarked on New Zealand soil sequence studies,  which he pursued for the following two decades.  These were based on chronosequences, climosequences and lithosequences in both the South and North Island, with one of the first and most notable pieces of work being the pedology of Franz Josef.

Professor Walker retired from Lincoln College in 1979 at the comparatively early age of 63.  He said he made the decision to stand down because he felt he was losing the intellectual sharpness  needed to challenge his PhD students.  In a neat turning of a circle,  the last staff member he appointed, Associate Professor Robert Sherlock, who completed a PhD in soil science during Professor Walker’s tenure,  is now head of The Prof’s old department and occupies his former office space.

Belying any real loss of powers,  Professor Walker’s post-retirement career  -  which in fact extended over 30 years  -  would have left lesser men breathless and beaten. He remained active as a scientific consultant,  continued with public speaking and lecturing engagements such as with the ElderHostel Programme, became the public face of white clover advocacy for Ravensdown, launched into a television career on Maggie’s Garden Show,  and kept up his fishing and gardening. He regularly attended Lincoln University functions and was at the dinner for the inaugural presentation of the Lincoln University Medals in 2009. This year,   not long before his 94th birthday,  he attended the Bledisloe Medal recipients’ luncheon. It was his last public engagement with the University. 

Emeritus Professor Walker is survived by his wife Edna  -  the couple received a 70th wedding anniversary card from The Queen earlier this year  -  daughters Jennifer, Pamela, Judy and Penny, 10 grandchildren and five great-grandchildren.  - ISC