Contact details +64 (06) 356 9099  ext. 84876

Dr Nick Roskruge PhD, PGDipMaoriResDev, BHort(Tech)Hons, DipHort(Veg), JP

Senior Lecturer in Horticulture

Institute of Agriculture and Environment

Professional

Contact details

  • Ph: 06 9517876
    Location: 2.06, Old Fruit Crops Building
    Campus: Turitea

Qualifications

  • PhD - Massey University (2007)
  • PG Diploma Maori Resource Development - Massey University (2001)
  • Bachelor of Horticulture, technology major, First class Honours - Massey University (1997)
  • Diploma in Horticulture, Vegetable production, with Distinction - Massey University (2004)
  • Justice of the Peace - Minister for Justice (2003)

Research Expertise

Research Interests

vegetable production, Maori resource stgudies, Maori agribusiness, Ethnobotany

Thematics

Resource Development and Management

Area of Expertise

Field of research codes
Agricultural And Veterinary Sciences (070000): Agricultural Land Management (070101): Agriculture, Land and Farm Management (070100):
Environmental Sciences (050000):
Farm Management, Rural Management and Agribusiness (070106):
History And Archaeology (210000):
Horticultural Crop Growth and Development (070601): Horticultural Crop Protection (Pests, Diseases and Weeds) (070603): Horticultural Production (070600):
Languages, Communication And Culture (200000):
Other Environmental Sciences (059900):
Other History and Archaeology (219900):
Other Language, Literature and Culture (209900):
Soil Sciences (050300): Soil Sciences not elsewhere classified (050399)

Research Projects

Summary of Research Projects

Position Current Completed
Project Leader 5 11
Team Member 1 2

Current Projects

Project Title: NSC - Our Land and Water (OLW) Vision Matauranga Think Piece

Date Range: 2017 - 2017

Funding Body: AgResearch Ltd

Project Team:

Project Title: Kaore te kumara e korero mo tona ake reka

Date Range: 2016 - 2018

Funding Body: Ministry of Business, Innovation and Employment

Project Team:

Completed Projects

Project Title: Tracing the influence of cultivation on the whakapa of endemic NZ plants with molecular markers

The domestication of plants and animals was the most important development in human history during the past 13 000 years. Most crops are thousands of years old, with aspects of their initial domestication indeterminable. However, the relatively recent settlement of New Zealand by Maori provides a unique opportunity to investigate the early phase of crop domestication. We shall use genetic analyses of four endemic New Zealand plants cultivated by Maori to examine recent domestication: karaka, rengarenga, whau, and coastal kowhai. Prior to human arrival these species are thought to have been restricted to the northern North Island. Their occurrence in the southern North Island, the South Island, and distant Chatham and Kermadec Island groups, which is strongly associated with M?ori archaeological sites, is considered to result from translocations as part of their cultivation. Our analyses will reveal information about the number of times each species was brought into cultivation and the way in which domestication has reduced genetic diversity in the cultivated populations. Our genetic data, combined with traditional oral histories, where available, will reflect and illuminate pre-European Maori settlement routes and mobility.
Read Project Description Hide Project Description

Date Range: 2008 - 2011

Funding Body: Marsden Fund - Full

Project Team:

Research Outputs

Journal

Pankomera, P., heyes, J., & lewthwaite, S. (2016). Effects of ethylene and 1-methylcyclopropene on sweetpotato storage root quality. Acta Horticulturae et Regiotecturae: the scientific journal for horticulture, landscape engineering, architecture and ecology. 1118, 163-170
[Journal article]Contributed to by: Roskruge, N.
Pankomera, P., Heyes, JA., Lewthwaite, SL., & Roskruge, N. (2016). Effects of ethylene and 1-methylcyclopropene on sweetpotato storage root quality. Acta Horticulturae. 1118, 163-170
[Journal article]Authored by: Heyes, J., Roskruge, N.
Fandika, IR., Kemp, PD., Millner, JP., Horne, D., & Roskruge, N. (2016). Irrigation and nitrogen effects on tuber yield and water use efficiency of heritage and modern potato cultivars. Agricultural Water Management. 170, 148-157
[Journal article]Authored by: Kemp, P., Millner, J., Roskruge, N.
Shepherd, LD., De Lange, PJ., Cox, S., McLenachan, PA., Roskruge, NR., & Lockhart, PJ. (2016). Evidence of a strong domestication bottleneck in the recently cultivated New Zealand endemic root crop, Arthropodium cirratum (Asparagaceae). PLoS ONE. 11(3)
[Journal article]Authored by: Lockhart, P., McLenachan, P., Roskruge, N.
Roskruge, NR. (2014). webpage - www.tahuriwhenua.org.nz.
[Internet publication]Authored by: Roskruge, N.
Roskruge, NR., & Puketapu, A. (2011). The Tomato-Potato Psyllid lifecycle on three traditional Maori food sources. Agronomy New Zealand. 41, 167-173
[Journal article]Authored by: Roskruge, N.
Roskruge, NR. (2011). The commercialisation of kōkihi or New Zealand spinach (Tetragonia tetragonioides) in New Zealand. Agronomy New Zealand. 41, 149-156
[Journal article]Authored by: Roskruge, N.
Marshall, CW., Shepherd, LD., & Roskruge, NR. (2011). Determining the Identity of New Zealand Kamokamo (Cucurbita pepo, Cucurbitaceae) Using Mitochondrial DNA and Morphological Data.. Agronomy New Zealand. 41, 157-166
[Journal article]Authored by: Roskruge, N.
Roskruge, NR. (2011). Traditional Maori horticultural and ethnopedological praxis in the New Zealand landscape. Management and Environmental Quality. 22(2), 200-212
[Journal article]Authored by: Roskruge, N.
Roskruge, NR., & anderson, J. (2010). The effects of late blight (Phytophthora infestans) on taewa Maori.. Agronomy New Zealand. 40, 171-176
[Journal article]Authored by: Roskruge, N.
Roskruge, NR., & Anderson, J, . (2010). The effects of Late Blight (Phytophthora infestans) on taewa Māori. Agronomy New Zealand. 40
[Journal article]Authored by: Roskruge, N.
Roskruge, NR. (2009). The significance of spinach. Grower. 64(8), 50-51
[Journal article]Authored by: Roskruge, N.
Roskruge, NR. (2009). Ka katokato au i te rau pororua. He Pukenga Korero Raumati (Summer). 9(1), 26-35
[Journal article]Authored by: Roskruge, N.
Ulluwishewa, R., Roskruge, NR., Harmsworth, G., & Antaran, B. (2008). Indigenous knowledge for natural resource management: a comparative study of Maori in New Zealand and Dusun in Brunei Darussalam. GeoJournal. , 1-14
[Journal article]Authored by: Roskruge, N.
Roskruge, NR. (2005). He kai kei aku ringaringa. Just Change: Food. (4), 14-15
[Journal article]Authored by: Roskruge, N.
Roskruge, NR. (2005). I can grow food with my hands: He kai kei aku ringaringa. Primary Industry Management. 8(1), 34-35
[Journal article]Authored by: Roskruge, N.
Roskruge, NR. (2004). He kai kei aku ringaringa. Just Change Food. 1(4), 14-15
[Journal article]Authored by: Roskruge, N.

Book

Roskruge, NR.(2015). Tahuaroa: food for your visitors. Korare. Massey University, Palmerston North: Institute of Agriculture and Environment
[Authored Book]Authored by: Roskruge, N.
Roskruge, NR., & Harmsworth, GR. (2014). Indigenous Māori values, perspectives and Knowledge of soils in Aotearoa-New Zealand: Beliefs, and Concepts of Soils, the Environment and Land. In GJ. Chruchman, & ER. Landa (Eds.) The Soil Underfoot: Infinite Possibilities for a Finite Resource. (pp. 111 - 126). : CRC Press
[Chapter]Authored by: Roskruge, N.
Roskruge, NR., & Harmsworth, GR. (2014). Indigenous Māori values, Perspectives and Knowledge of soils in Aotearoa-New Zealand: Maori Use and Knowledge of Soils over Time. In ER. Landa, & GJ. Churchman (Eds.) The Soil Underfoot: Infinite Possibilities for a Finite Resource. (pp. 257 - 268). : CRC Press
[Chapter]Authored by: Roskruge, N.
Roskruge, NR.(2014). Rauwaru, the proverbial garden: Ngaweri, Maori root vegetables, their history and tips on their use. Palmerston North: Institute of Agriculture and Environment
[Authored Book]Authored by: Roskruge, N.
Roskruge, NR., & Millner, J. (2013). The New Zealand arable industry. In JR. Dymond (Ed.) Ecosystem Services in New Zealand. (pp. 102 - 114). New Zealand: Manaaki Whenua Press
[Chapter]Authored by: Roskruge, N.
Roskruge, NR.(2012). Tahua-roa; Korare, Maori Green Vegetables. Their history and tips on their use. Palmerston North: Institute of Natural Resources
[Authored Book]Authored by: Roskruge, N.
Roskruge, NR. (2011). Horticulture: a personal perspective. In H. Tomlins-Jahnke, & M. Mulholland (Eds.) Mana Tangata. (pp. 243 - 256).
[Chapter]Authored by: Roskruge, N.
Roskruge, NR. (2011). Horticulture, a personal perspective. In H. Tomlins-Jahnke, & M. Mulholland (Eds.) Mana Tangata, politics of empowerment. Wellington: Huia Publishers
[Chapter]Authored by: Roskruge, N.
Roskruge, NR., Puketapu, A., & McFarlane, T. (2010). Nga Porearea me nga matemate o nga maara taewa. In NR. Roskruge (Ed.) Nga Porearea me nga matemate o nga maara taewa,. (pp. i - 73). Palmerston North: Institute of Natural Resources, Massey University
[Chapter]Authored by: Roskruge, N.
Roskruge, N., Puketapu, A., & McFarlane, T.(2010). Nga Porearea Me Nga Matemate O Nga Mara Taewa: Pests and Diseases of Taewa (Maori Potato) Crops. Massey University, Palmerston North 4442, New Zealand: The Institute of Natural Resources
[Authored Book]Authored by: Roskruge, N.
Roskruge, NR.(2009). Hokia ki te whenua: Returning to the land. Germany: VDM Publishers
[Authored Book]Authored by: Roskruge, N.

Creative Work

Roskruge, N.(2014). Taewa episode, Project Matauranga (series 2). [television programme]. Palmerston North and Auckland
[Film or Video]Authored by: Roskruge, N.Contributed to by: Roskruge, N.
Roskruge, NR., & Roskruge, NR. (2010). Tahuri Whenua Ki Kaikoura.
[Composition]Authored by: Roskruge, N.
Roskruge, NR., & Roskruge, NR. (2010). Linking the west and east of the Pacific Rim: Part Two - Te Putara. Environmental Risk Management Authority (ERMA): Wellington, NZ; 1
[Composition]Authored by: Roskruge, N.
Roskruge, NR., & Roskruge, NR. (2009). Tahuri Whenua Hui - Te Putara. Environmental Risk Management Authority (ERMA): Wellington, NZ; 1
[Composition]Authored by: Roskruge, N.
Roskruge, NR., & Roskruge, NR. (2009). Linking the west and east of the Pacific Rim: Part One - Te Putara. Environmental Risk Management Authority (ERMA): Wellington, NZ; 1
[Composition]Authored by: Roskruge, N.

Thesis

Roskruge, NR. (2008). The benefits and barriers to gis for Maori.. (Master's Thesis, Lincoln University, Christchurch)
[Masters Thesis]Authored by: Roskruge, N.
Roskruge, NR. (2007). Hokia ki te whenua. (Doctoral Thesis, Massey University, Palmerston North, NZ)
[Doctoral Thesis]Authored by: Roskruge, N.

Report

Roskruge, NR. (2008). Panel member-ecosystems OBI review.
[Commissioned Report]Authored by: Roskruge, N.
Roskruge, NR. (2008). Sustainable farming fund planning workshop ( sff assessment and application review workshop)..
[Commissioned Report]Authored by: Roskruge, N.
Roskruge, NR., & Bath, S.(2008). Kamokamo production in the Manawatu.
[Technical Report]Authored by: Roskruge, N.

Conference

Roskruge, N.(2017). The Social Politics of the Maori Economy in Horticulture. Paper presented at the meeting of 2016 International Austronesian Conference Proceedings. Taipei, Taiwan
[Conference Paper]Authored by: Roskruge, N.
Roskruge, NR. (2015, February). Toi Tangata National Hui-a-Tau 2015 - Held at Karitane, Te Waipounamu. Presented at Toi Tangata National Hui-a-Tau. Karitane - and Otago University campus.
[Conference Oral Presentation]Authored by: Roskruge, N.Contributed to by: Roskruge, N.
Roskruge, NR. (2014, November). Cultural uses of New Zealand indigenous plants. Presented at The Internationalisation of Chinese Medicine in Food and Agriculture. Massey University, Albany Campus.
[Conference Oral Presentation]Authored by: Roskruge, N.Contributed to by: Roskruge, N.
Roskruge, NR. (2014, November). Rauwaru: the proverbial garden for Maori in New Zealand. Presented at Agrifood XXI 21st Conference of the Australasian Agri-food research network. the National Centre of Indigenous Excellence, University of Sydney, Sydney, Australia.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2014, October). The future of farming - discussion panel, Maori viewpoint. Presented at New Zealand Future Farms 2014: Raising farm performance through intelligent modernisation. Wellington.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2014, October). Maori farming in the modern business environment. Presented at New Zealand Future Farms 2014 - raising farm performance through intelligent modernisation. Wellington.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2014, March). Tahuaroa - food for your visitors. Presented at SCANZ Science Communicators Association of New Zealand annual conference. Palmerston North.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2014, May). Tahuri Whenua - capturing traditional knowledge for contemporary opportunity. Presented at Society of Ethnobotany 37th annual conference. Cherokee, North Carolina, USA.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR., & Donato, C. (2014, May). A comparison of Maori and commercial sweetpotato (Ipomoea batatas) crop establishment methods in New Zealand.. Presented at Society of Ethnobotany 37th annual conference. Cherokee, North Carolina, USA.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR., Pankomera, P., Heyes, JA., & Lewthwaite, SL. (2013). Hot Water Treatment and Coating Effects on Sweetpotato Storage Quality. Poster session presented at the meeting of NZ Society of Agronomy Conference
[Conference Poster]Authored by: Roskruge, N.
Roskruge, NR. (2013). The origin and movement of traditional Maori foods in New Zealand. Poster session presented at the meeting of Society of Ethnobotany 36th annual Conference. Denton, Texas, USA
[Conference Poster]Authored by: Roskruge, N.
Roskruge, NR. (2012, August). The value of korare as a nutritional option for the Maori diet. Presented at Kai mo hauora: knowledge and insights for health 2012. Palmerston North.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2011, May). Invited speach - Ngati Kahungunu Hui and Expo. Presented at Ngati kahungunu Website launch and EXPO. Waipatu Marae, Hastings.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, November). The effects of late blight (Phytophthora infestans) on taewa Maori.. Presented at “Food Security from Sustainable Agriculture’, Agronomy NZ Conference,. Lincoln University.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, N. (2010, November). The effects of late blight (Phytophthora infestans) on taewa Maori. Presented at Food Security from Sustainable Agriculture. Lincoln University, New Zealand.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, July). Implications of the resurgence of Maori vegetable growers. Presented at "Te Mahi Kai Symposium: The Language of Food". Victoria University, Wellington, New Zealand.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, July). Indigenous horticulture. Presented at Te Wiki o Te Reo Maori: Maori Language Week Seminar Series. Victoria University, Wellington, New Zealand.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, April). Addressing climate change in kura through hangarau programmes. Exploring easy development of maara kai and the principles of our tupuna.. Presented at Te Ao Hangarau. Kairau Marae, Waitara.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, February). New Zealand horticulture in the global environment; production and training for the future. Presented at Agricultural Technology Extension Center (ATEC) - International Cooperation Institute Joint Seminar on Horticulture. Jinju, South Korea.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010). New Zealand horticulture in the global environment; production and training for the future. Agricultural Technology Extension Center (ATEC) - International Cooperation Institute Joint Seminar on Horticulture.
[Conference Paper in Published Proceedings]Authored by: Roskruge, N.
Roskruge, NR. (2010, March). Introduction to traditional crops and farming in New Zealand. Presented at Chinese Agricultural Delegation Study Tour: Conservation and sustainable utilisation of wild relative crops. Ministry of Economic Development, Wellington, NZ.
[Conference Oral Presentation]Authored by: Roskruge, N.
Atherton, R., Lockhart, P., Shepherd, L., & Roskruge, N. (2009, September). Tracing the translocation history of a New Zealand endemic cultivated tree. Presented at 5th International Congress of Ethnobotany (ICEB). Bariloche, Argentina.
[Conference Oral Presentation]Authored by: Lockhart, P., Roskruge, N.
Roskruge, NR. (2009). The foods of Rongomaraeroa, sustaining the Maori of New Zealand. The 15th Triennial International Symposium of the International Society for Tropical Root Crops.
[Conference Paper in Published Proceedings]Authored by: Roskruge, N.
Atherton, R., Lockhart, P., Roskruge, N., de lange, P., & Shepherd, L. (2008). Tracing the domestication history and whakapapa (relationships) of cultivated New Zealand plants using DNA markers. , 11th Annual Molecular Ecology Meeting
[Conference Abstract]Authored by: Lockhart, P., Roskruge, N.
Roskruge, NR. (2008, June). Traditional Maori horticulture systems: cultural and ethnopedological praxis in New Zealand landscape. Presented at XI International Congree of Ethnobiology: Livelihoods and Collective Biocultral Heritage. Cusco, Peru.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2008, August). Indigenous production systems of relict potatoes and their marketing opportunities. Presented at 92nd Annual Meeting of the Potato Assoication of America. Buffalo, NY.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2007, October). Building relationships with Maori iwi. Presented at Allan Wilson Centre Annual Meeting. Palmerston North, NZ.
[Conference Oral Presentation]Authored by: Roskruge, N.
Tapuke, S., Procter, JN., Cronin, SJ., & Roskruge, N. (2006). Working effectively with tangata whenua in volcanic risk management in Aotearoa-New Zealand. In Abstracts Volume: Fourth Conference, Cities on Volcanoes: Instituto Geofisico de la Escuela Politecnica Nacional
[Conference Abstract]Authored by: Procter, J., Roskruge, N.
Roskruge, NR. (2005, September). Horticulture: Taewa Innovation. Presented at Maori Succeeding in Agribusiness Conference. Massey University, Palmerston North, NZ.
[Conference Oral Presentation]Authored by: Roskruge, N.
Seelye, J., Young, M., Lister, R., Fletcher, JD., Roskruge, NR., & Burge, GK. (2005, February). Producing virus-free Taewa Maori. Presented at 16th Biennial meeting The New Zealand Branch IAPTC&B. Methven, NZ.
[Conference Oral Presentation]Authored by: Roskruge, N.
Seelye, J., Young, MR., Lister, R., Fletcher, JD., Roskruge, NR., & Burge, GK. (2005). Producing virus-free Taewa Maori. Poster session presented at the meeting of 16th Biennial meeting The New Zealand Branch IAPTC&B. Methven, NZ
[Conference Poster]Authored by: Roskruge, N., Young, M.
Roskruge, NR. (2005). Nga Maara kai ki te Ao Hurihuri (Garden Foods of the Future). In EH. Ed (Ed.) Te Ohu Whenua Hui A Tau: Maori Succeeding in Agribusiness Conference. Vol. 2 (pp. 57 - 62). Palmerston North, NZ
[Conference Paper in Published Proceedings]Authored by: Roskruge, N.
Roskruge, NR.(2004, July). Te Ohu Whenua: Maori succeeding in Agribusiness Conference. Bayesian Analysis. (1)
[Conference]Authored by: Roskruge, N.
Roskruge, NR. (2004, July). Snap shot of Maori horticulture. Presented at Te Ohu Whenua Hui a Tau 2004. Massey University, Palmerston North, NZ.
[Conference Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2004, July). He kai kei aku ringaringa. Presented at Te Ohu Whenua Hui a Tau 2004. Massey University, Palmerston North, NZ.
[Conference Oral Presentation]Authored by: Roskruge, N.

Other

Roskruge, NR. (2013, March). Pacific history of taewa, kumara and Indian Corn.
[Oral Presentation]Authored by: Roskruge, N.Contributed to by: Roskruge, N.
Roskruge, NR. (2013). the history of Taewa, Kumara and Indian Corn.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2012, December). Presentation to workshop held for Mountain Safety Instructors by the Mountain Safety Council, held at Totara Reserve, Manawatu. Organiser Karen Iversen.
[Oral Presentation]Authored by: Roskruge, N.Contributed to by: Roskruge, N.
Roskruge, NR. (2012, December). Edible and medicinal native plants.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2012, November). Te mauri o nga taewa13 November 2012.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2011, June). Presentation to Japanese Agricultural Business Delegation, sponsored by Min Foreign Affairs & Trade, Massey University 13/6/11.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2011, April). taewa maara harvest. : Radio NZ National programme - interview.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2011, July). How can Matauranga Maori complement science?. In HB Branch, Royal Society of NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2011, July). Matariki Lecture (by invitation) to the Palmerston North campus of Landcare Research.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, N. (2011). Nga Porearea Me Nga Matemate O Nga Mara Taewa: Pests and Diseases of Taewa (Maori Potato) Crops. In ..
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, October). Lessons from the Maori Potato: aboriginal experience and current strategies in Aotearoa/New Zealand. Presentation to the Indigenous Studies colloquium, Vancouver Island University, Nanaimo, Canada. 28 October 2010.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, November). Indigenous horticulture in New Zealand, seminar presentation to the Mt Vernon Research and Extension Centre, Washington State University, Washington State, USA. 2 November 2010.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, N. (2010, September). Tahuri Whenua National Maori Vegetable Growers Roopu. In National Maori Vegetable Growers Collective AGM. Presented at Parewahawaha Marae, New Zealand.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, N. (2010, October). Lessons from the Maori potato: Aboriginal experience and current strategies in Aotearoa/New Zealand. In MT Vernon Research Centre, Washington State University.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, N. (2010). Lessons from the Maori potato: Aboriginal experience and current strategies in Aotearoa New Zealand. Presented at Vancouver Island University, Nanaimo, Canada.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, N. (2010, October). Maori food knowledge and production systems in New Zealand. In Makah Tribal representatives: Washington.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010). Tahuri Whenua ki Kaikoura. (pp. 6 - 6).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2010). Maara kai. In Sustainable Living Group. Presented at Marton, New Zealand.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010). Linking the east and west of the Pacific Rim: Part Three Centro Internacional de la Papa, Peru - Te Putara. (pp. 5 - 5).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2010, June). Kai Maori growing and harvesting. Presented at Sound and Vision Zone, Palmerston North Central Library, Palmerston North, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, February). Chairman, Tahuri Whenua Hui-a-rohe. In Tahuri Whenua, National Maori Vegetable Growers Collective. Presented at Takahanga Marae, Kaikoura, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010, March). Gardening from a Maori perspective. In Fruit in Schools. Presented at Sport Manawatu, Palmerston North, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010). Maori gardening for May.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2010, May). Horticulture and Massey University, an overview. In Korean visitors. Presented at Waiariki Institute of Technology, Rotorua, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2010). Insect pests hammer taewa crop. (pp. 9 - 9).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2010, May). Kaikorero, pohiri whakatau for Korean visitors. In Ihenga Marae, Waiariki Institute of Technology. Presented at Rotorua, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009, July). Interview for country channel programme: Maori horticulture projects. In Country Channel (Sky).
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009). Series of interviews presented on biotechnology learning hub website. The University of Waikato
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2009, April). Te Amorangi, national Maori excellence award. In Maori Doctoral graduates. Presented at Turangawaewae Marae, University of Waikato.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009, September). Maara kai launch and workshop. In Hutt Valley DHB, National Kohanga Reo Trust and others. Presented at Waiwhetu, Lower Hutt.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009, August). Maara kai ki Wairarapa. In Maara kai workshop. Presented at Te Heru a Rangi Marae, Masterton.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009, June). Nga maara taewa o nga iwi Maori; the potato gardens of Maori in New Zealand. In Coloquios de investigacion en ciencias agrarias. Presented at Universidad Austral de Chile, Valdivia, Chile.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009, August). Maara Kai Workshop. In Te Heru A Rangi Education and Cultural Centre. Presented at Masterton, Wairapap, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009). Hikoi ki Peru.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2009, July). Traditional Maori horticultural systems, cultural and ethnopedological praxis in the New Zealand landscape. In CIP, staff and researchers. Presented at (International Potato Centre, CIP), Lima, Peru.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009, July). Sistemas horticolas tradicionales Maori. In Foro de etnobiologia Presenta La Conferencia:. Presented at Lima Peru.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2009, August). Tahuri Whenua me nga maara. In Nga Kaitono, Te Wananga o Raukawa. Presented at Te Wananga o Raukawa, Otaki.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR., Williams, M., West, J., & Clancy, T. (2009). Outcome-based Investment contract reviews.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2009). Marker for honours dissertation.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). N Roskruge - marker for PhD thesis. (pp. 1 - 246).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). The diversity of the spud. (pp. 15 - 15).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008, October). The Maori potato a growing industry. In UN Day Function Potato Dinner to Celebrate the UN Year of the Potato. Presented at Wellington, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2008). Probos talk, Pahiatua, for International Year of the Potato.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Interview with regards to Tahuri Whenua.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Massey lecturer appointed to ERMA Group.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Information on CIP's research and ethnobotany meeting in Peru.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008, August). This year is the 'Year of the Potato'. In Pahiatua and Districts Probus Club. Presented at Pahiatua, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2008, February). Hokia ki te Whenua. In Tahuri Whenua - The National Maori Growers Collective. Presented at Marahau, New Zealand.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2008, March). 'United Nations' - International year of the (Maori) potato. In East Coast Organic Festival. Presented at Uawa, Tolaga Bay, New Zealand.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2008). Radio Interview: 10 April 2008.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Massey University students have produceed a bumper crop of Maori potatoes known as Taewa.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Yields up for Maori potato. (pp. 14).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Taewa, bumper crop of potatoes.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Taewa, bumper crop of potatoes.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Taewa, bumper crop of potatoes.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Hui for vegie growers.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Taewa harvest time.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Episode 6: 26 April and Episode 7: 3 May 2008.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Warm, sunny summer produces bumper Taewa crop.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Response to research funding boost for government food sector.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Harvest of Taewa Maori for 2008.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Maori potato cultivars harvested for seed-bank.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2008). Filmed and Interviewed for promotional DVD for curriculum of technology programme: 19 August 2008.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2007). Sector group AGM chairman.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2007, October). Hokia ki te whenua - Soil husbandry. In New Zealand Trade and Enterprise (NZTE) Enterprise Training Workshop. Presented at Tolaga Bay, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2007, December). Hauiti huri whenua project. In Wormfarm Workshop. Presented at Rata Marae, Wanganui, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2007, December). What's been happening. In Tikitiki Cluster and Crop & Food Wananga. Presented at Tikitiki, Gisborne, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2007, July). Big spuds, little spuds. In Sustainable Living Centre Workshops and Seminars Programme. Presented at Auckland, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2007, June). Anei te ringa tango otaota - This is the hand that does the weeding. In Te Papa Matariki Festival. Presented at Wellington, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2007). Growing knowledge for future generations.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2007). Unearthing a niche market. (pp. 26 - 27).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2007). WAI262 kumara claim.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2007). WAI262 kumara claim.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2007). Helping Massey Maori. (pp. 11).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2006, April). Waka whitiwhiti whakaaro. In Hui for AgResearch. Presented at Ngaruawahia, NZ.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2006). Who owns the kumara?. (pp. E3).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2006). Ki tai ki uta.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2006). Maori horticulture.
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2006). Old potatoes for new. (pp. 48 - 49).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2006). Purple Maori potatoes. (pp. 110).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2006). Tahuri Whenua: A return to the land for Maori. (pp. 18 - 20).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2006). That ain't no spud, it's more like a pootato. (pp. B4).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2005, February). Presentation to Rural Land Use Steering Committee. : Rural Land Use Steering Committee.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2005, February). Maori horticulture. : Taanehopuwai Gardens and Services.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2005, January). Maori horticulture. : Maniapoto Maori Expo.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2005, February). Maori horticulture. Presented at Wellington, NZ. : Rural Land Use Steering Committee.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2005, January). Tahuri Whenua Inc. : Whiriwhiriwhakaro.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2005). Tahuri whenua (Maori horticulture). : Taanehopuwai Gardens and Service.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2005, August). Whakaaro Maori ki to ao turoa. : Massey Student Wildlife Conservation Club.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2005, June). Nga Reo O Matariki Series - Maori Horticulture. : Matariki Festival at Te Papa.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR., Wright, T., & Puha, M. (2005, September). Growing and marketing riwai Maori today. : Agresearch.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR. (2005). Maori crops info sought. (pp. 8).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2005). Maori farming hui kicks off at Massey. (pp. 3).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2004). Māori potato new vege choice. (pp. 13 - 13).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2004). Cheap as chips. (pp. 15 - 15).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2004). Unearthing the potential of the humble potato. (pp. 13 - 13).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2004). Maori potato's secrets unlocked. (pp. 3 - 3).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2004). Agriculture stepping stone to Māori success. (pp. 12 - 13).
[Other]Authored by: Roskruge, N.
Roskruge, NR. (2004). New shoots. (pp. 9 - 9).
[Other]Authored by: Roskruge, N.
Roskruge, NR.presenter - Maara kai wananga Huria Marae, Tauranga 24 April 2010.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR.presenter - Maara kai wananga Torere marae, Opotiki 22 April 2010.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR.Tahuri Whenua Hui-a-Tau, Rongomaraeroa marae, Porangahau, 13 August 2011. Chairman of hui with over 70 participants from all over new Zealand.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR.Tahuri Whenua Hui-a-rohe, Pukearuhe Marae, Pukearuhe, Taranaki 6 March 2011. Chairman of hui and over 80 participants from all over New Zealand.
[Oral Presentation]Authored by: Roskruge, N.
Roskruge, NR.Tahuri Whenua Hui-a-rohe, Owae Marae, Waitara, Taranaki 4-5 March 2011. Chairman of hui and over 80 participants from all over New Zealand.
[Oral Presentation]Authored by: Roskruge, N.

Supervision and Teaching

Summary of Doctoral Supervision

Position Current Completed
Supervisor 3 0
CoSupervisor 1 2

Current Doctoral Supervision

Supervisor of:

  • Soni Leweniqila - PhD
    Sustainability, Adaptability and Yield Stability of Sweet Potatoes in different climatic zones of Fiji
  • Allan Siano - PhD
    Low-cost Production Technology of Potato Clean Planting Materials through Aeroponics in New Zealand and Philippines
  • Rohit Lal - PhD
    Developing a Sustainable Nutrient Management System for Taro Growers in Taveuni, Fiji

CoSupervisor of:

  • Suliasi Vunibola - PhD
    Customary land and economic development: case studies from Fiji

Completed Doctoral Supervision

CoSupervisor of:

  • 2015 - Pilirani Pankomera - PhD
    Effects of postharvest treatments on sweetpotato (Ipomoea batatas) storage quality

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