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Prof Peter Tozer staff profile picture

Contact details +6469517795

Prof Peter Tozer PhD

Professor in Farm Management

Doctoral Mentor Supervisor
School of Agriculture and Environment

Professional

Contact details

  • Location: AH2.53, AgHort
    Campus: Turitea

Qualifications

  • Doctor of Philosophy - Washington State University (1998)

Research Expertise

Research Interests

Farm and Agribusiness Management

Agriculture and Food Marketing

Impacts of Pests and Diseases on Food  Production and Markets

Thematics

Future Food Systems

Area of Expertise

Field of research codes
Agricultural And Veterinary Sciences (070000):
Agricultural Economics (140201):
Agricultural Systems Analysis and Modelling (070105): Agriculture, Land and Farm Management (070100):
Applied Economics (140200): Economics (140000):
Farm Management, Rural Management and Agribusiness (070106): Farming Systems Research (070107)

Research Outputs

Journal

Marsh, TL., Pendell, D., Schrobback, P., Shakil, G., & Tozer, P. (2024). Loss of production and animal health costs in assessing economic burden of animal disease. OIE Revue Scientifique et Technique. 43, 58-68
[Journal article]Authored by: Tozer, P.
Ahiamadia, D., Ramilan, T., & Tozer, PR. (2024). Enhancing climate resilience in northern Ghana: A stochastic dominance analysis of risk-efficient climate-smart technologies for smallholder farmers. Environmental Development. 51
[Journal article]Authored by: Ramilan, T., Tozer, P.
Farrell, LJ., Morris, ST., Kenyon, PR., & Tozer, PR. (2024). A bio-economic modelling comparison of a Friesian Bull-Beef system and a New Generation Beef system with Friesian bulls slaughtered at 10–14 months old. New Zealand Journal of Agricultural Research.
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Moloney, AJ., Tozer, PR., Morris, ST., & Kenyon, PR. (2023). Bigger lambs or more lambs: The conundrum for New Zealand lamb producers. Livestock Science. 270
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Farrell, LJ., Morris, ST., Kenyon, PR., & Tozer, PR. (2022). Simulating the profitability of male-sexed semen use in extensively farmed beef cow herds. Livestock Science. 266
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Wangui, JC., Millner, JP., Kenyon, PR., Tozer, PR., Morel, PCH., & Pain, SJ. (2022). In Vitro Fermentation of Browsable Native Shrubs in New Zealand. Plants. 11(16)
[Journal article]Authored by: Kenyon, P., Millner, J., Morel, P., Pain, S., Tozer, P.
Farrell, LJ., Morris, ST., Kenyon, PR., & Tozer, PR. (2022). Simulating use of terminal sires in a self-replacing beef suckler herd with varying weaning rate, calf sale policies, and price premiums. Livestock Science. 260
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Farrell, LJ., Morris, ST., Kenyon, PR., & Tozer, PR. (2022). Simulating the productivity and profitability of a herd of beef-dairy crossbred breeding cows on New Zealand hill country with fixed feed supply. Livestock Science. 260
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Wangui, JC., Kenyon, PR., Tozer, PR., Millner, JP., & Pain, SJ. (2021). Bioeconomic modelling to assess the impacts of using native shrubs on the marginal portions of the sheep and beef hill country farms in new zealand. Agriculture (Switzerland). 11(10)
[Journal article]Authored by: Kenyon, P., Millner, J., Pain, S., Tozer, P.
Farrell, LJ., Tozer, PR., Kenyon, PR., Cranston, LM., & Ramilan, T. (2021). Producing higher value wool through a transition from romney to merino crossbred: Constraining sheep feed demand. Agriculture (Switzerland). 11(10)
[Journal article]Authored by: Cranston, L., Kenyon, P., Ramilan, T., Tozer, P.
Farrell, LJ., Kenyon, PR., Tozer, PR., & Morris, ST. (2021). Determining the impact of hogget breeding performance on profitability under a fixed feed supply scenario in New Zealand. Animals. 11(5)
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Farrell, LJ., Morris, ST., Kenyon, PR., & Tozer, PR. (2021). Simulating beef cattle herd productivity with varying cow liveweight and fixed feed supply. Agriculture (Switzerland). 11(1), 1-16
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Farrell, LJ., Kenyon, PR., Morris, ST., & Tozer, PR. (2020). The impact of hogget and mature flock reproductive success on sheep farm productivity. Agriculture (Switzerland). 10(11), 1-15
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Farrell, LJ., Morris, ST., Kenyon, PR., & Tozer, PR. (2020). Modelling a transition from purebred romney to fully shedding wiltshire–romney crossbred. Animals. 10(11), 1-24
[Journal article]Authored by: Kenyon, P., Morris, S., Tozer, P.
Farrell, LJ., Tozer, PR., Kenyon, PR., Ramilan, T., & Cranston, LM. (2020). Producing higher value wool through a transition from Romney to Merino crossbred ii: Cashflow and profit. Small Ruminant Research. 192
[Journal article]Authored by: Cranston, L., Kenyon, P., Ramilan, T., Tozer, P.
Farrell, LJ., Tozer, PR., Kenyon, PR., Ramilan, T., & Cranston, LM. (2020). Producing higher value wool through a transition from Romney to Merino crossbred i: Flock dynamics, feed demand, and production of lambs and wool. Small Ruminant Research. 192
[Journal article]Authored by: Cranston, L., Kenyon, P., Ramilan, T., Tozer, P.
Chen, KJ., Galinato, SP., Marsh, TL., Tozer, PR., & Chouinard, HH. (2020). Willingness to pay for attributes of biodegradable plastic mulches in the agricultural sector. HortTechnology. 30(3), 437-447
[Journal article]Authored by: Tozer, P.
Farrell, LJ., Kenyon, PR., Tozer, PR., Ramilan, T., & Cranston, LM. (2020). Quantifying sheep enterprise profitability with varying flock replacement rates, lambing rates, and breeding strategies in New Zealand. Agricultural Systems. 184
[Journal article]Authored by: Cranston, L., Kenyon, P., Ramilan, T., Tozer, P.
Schröer-Merker, E., & Tozer, P. (2019). Feasibility of innovative sharemilking arrangements. Animal Production Science. 60(1), 89-95
[Journal article]Authored by: Tozer, P.
Adjabui, JA., Tozer, PR., & Gray, DI. (2019). Willingness to participate and pay for index-based crop insurance in Ghana. Agricultural Finance Review. 79(4), 491-507
[Journal article]Authored by: Tozer, P.
Farrell, LJ., Tozer, PR., Kenyon, PR., Ramilan, T., & Cranston, LM. (2019). The effect of ewe wastage in New Zealand sheep and beef farms on flock productivity and farm profitability. Agricultural Systems. 174, 125-132
[Journal article]Authored by: Cranston, L., Kenyon, P., Ramilan, T., Tozer, P.
Middleton, N., Tozer, P., & Tozer, B. (2019). Sand and dust storms: underrated natural hazards. Disasters. 43(2), 390-409
[Journal article]Authored by: Tozer, P.
Chen, K-J., Marsh, TL., Tozer, P., & Galinato, S. (2019). Biotechnology to sustainability: Consumer preferences for food products grown on biodegradable mulches. Food Research International. 116, 200-210 Retrieved from https://www.sciencedirect.com/science/article/pii/S0963996918306197
[Journal article]Authored by: Tozer, P.
Chen, KJ., Marsh, TL., Tozer, PR., & Galinato, SP. (2019). Biotechnology to sustainability: Consumer preferences for food products grown on biodegradable mulches. Food Research International. 116, 200-210
[Journal article]Authored by: Tozer, P.
Cassey, AJ., Lee, K., Sage, J., & Tozer, PR. (2018). Assessing post-harvest labor shortages, wages, and welfare. Agricultural and Food Economics. 6(1)
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Marsh, TL. (2018). Dynamic regional model of the US apple industry: Consequences of supply or demand shocks due to pest or disease outbreaks and control. Agricultural Systems. 164, 252-263
[Journal article]Authored by: Tozer, P.
Tozer, PR., Marsh, TL., & Perevodchikov, EV. (2015). Economic welfare impacts of foot-and-mouth disease in the canadian beef cattle sector. Canadian Journal of Agricultural Economics. 63(2), 163-184
[Journal article]Authored by: Tozer, P.
Tozer, PR., Galinato, SP., Ross, CF., Miles, CA., & McCluskey, JJ. (2015). Sensory analysis and willingness to pay for craft cider. Journal of Wine Economics. 10(3), 314-328
[Journal article]Authored by: Tozer, P.
Jiang, J., Marsh, TL., & Tozer, PR. (2015). Policy induced price volatility transmission: Linking the U.S. crude oil, corn and plastics markets. Energy Economics. 52, 217-227
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Villano, R. (2013). Decomposing productivity and efficiency among Western Australian grain producers. Journal of Agricultural and Resource Economics. 38(3), 312-326
[Journal article]Authored by: Tozer, P.
Tozer, P., & Leys, J. (2013). Dust storms - What do they really cost?. Rangeland Journal. 35(2), 131-142
[Journal article]Authored by: Tozer, P.
Fisher, J., Tozer, P., & Abrecht, D. (2012). Livestock in no-till cropping systems- A story of trade-offs. Animal Production Science. 52(4), 197-214
[Journal article]Authored by: Tozer, P.
Tozer, P., & Marsh, TL. (2012). Domestic and trade impacts of foot-and-mouth disease on the Australian beef industry. Australian Journal of Agricultural and Resource Economics. 56(3), 385-404
[Journal article]Authored by: Tozer, P.
Macrina, AL., Tozer, PR., & Kensinger, RS. (2011). Induced lactation in pubertal heifers: Efficacy, response to bovine somatotropin, and profitability. Journal of Dairy Science. 94(3), 1355-1364
[Journal article]Authored by: Tozer, P.
Nogueira, L., Marsh, TL., Tozer, PR., & Peel, D. (2011). Foot-and-mouth disease and the Mexican cattle industry. Agricultural Economics. 42(SUPPL. 1), 33-44
[Journal article]Authored by: Tozer, P.
Tozer, PR. (2010). Measuring the efficiency of wheat production of Western Australian growers. Agronomy Journal. 102(2), 642-648
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Stokes, JR. (2009). Investing in perennial pasture improvement: A real options analysis. Review of Agricultural Economics. 31(1), 88-102
[Journal article]Authored by: Tozer, P.
Tozer, PR. (2009). Uncertainty and investment in precision agriculture - Is it worth the money?. Agricultural Systems. 100(1-3), 80-87
[Journal article]Authored by: Tozer, P.
Stokes, JR., Tozer, PR., & Hyde, J. (2007). Identifying efficient dairy producers using data envelopment analysis. Journal of Dairy Science. 90(5), 2555-2562
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Isbister, BJ. (2007). Is it economically feasible to harvest by management zone?. Precision Agriculture. 8(3), 151-159
[Journal article]Authored by: Tozer, P.
Tozer, PR. (2007). The Benefits of Management Changes in Beef Enterprises on Pastoral Stations in Western Australia.. Australasian Agribusiness Review. 15, 62-74
[Journal article]Authored by: Tozer, P.
Robertson, M., Isbister, B., Maling, I., Oliver, Y., Wong, M., Adams, M., . . . Tozer, P. (2007). Opportunities and constraints for managing within-field spatial variability in Western Australian grain production. Field Crops Research. 104(1-3), 60-67
[Journal article]Authored by: Tozer, P.
Egan, BA., Diehl, NK., Bryan, KA., Tozer, PR., Swinker, AM., & O'Connor, ML. (2006). Behavioral, Anatomical, and Physiological Changes in Late Gestation Mares. Professional Animal Scientist. 22(1), 94-105
[Journal article]Authored by: Tozer, P.
Stokes, JR., & Tozer, PR. (2006). Optimal feed mill blending. Review of Agricultural Economics. 28(4), 543-552
[Journal article]Authored by: Tozer, P.
Tozer, PR. (2006). Depreciation rates for Australian tractors and headers: Is machinery depreciation a fixed or variable cost?. Australain Agribusiness Perspectives.
[Journal article]Authored by: Tozer, P.
Kaine, GW., & Tozer, PR. (2005). Stability, resilience and sustainability in pasture-based grazing systems. Agricultural Systems. 83(1), 27-48
[Journal article]Authored by: Tozer, P.
Tozer, PR., Varga, GA., Henning, WR., & Holden, LA. (2005). Do Dairy Producers Use Effective Management Practices to Improve the Value of Market Cows?. Professional Animal Scientist. 21(4), 272-277
[Journal article]Authored by: Tozer, P.
Roush, WB., & Tozer, PR. (2004). The power of tests for bioequivalence in feed experiments with poultry.. Journal of animal science. 82 E-Suppl
[Journal article]Authored by: Tozer, P.
Edwards, JL., & Tozer, PR. (2004). Using activity and milk yield as predictors of fresh cow disorders. Journal of Dairy Science. 87(2), 524-531
[Journal article]Authored by: Tozer, P.
Lesmeister, KE., Tozer, PR., & Heinrichs, AJ. (2004). Development and analysis of a rumen tissue sampling procedure. Journal of Dairy Science. 87(5), 1336-1344
[Journal article]Authored by: Tozer, P.
Tozer, PR., Bargo, F., & Muller, LD. (2004). The effect of pasture allowance and supplementation on feed efficiency and profitability of dairy systems. Journal of Dairy Science. 87(9), 2902-2911
[Journal article]Authored by: Tozer, P.
Tozer, PR., Bargo, F., & Muller, LD. (2003). Economic analyses of feeding systems combining pasture and total mixed ration. Journal of Dairy Science. 86(3), 808-818
[Journal article]Authored by: Tozer, P.
Tozer, PR., Scollard, DL., Marsh, TL., & Marsh, TJ. (2002). Recursive systems model of fetal birth weight and calving difficulty in beef heifers. Canadian Journal of Animal Science. 82(1), 19-27
[Journal article]Authored by: Tozer, P.
Stokes, JR., & Tozer, PR. (2002). Sire selection with multiple objectives. Agricultural Systems. 73(2), 147-164
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Stokes, JR. (2002). Producer breeding objectives and optimal sire selection. Journal of Dairy Science. 85(12), 3518-3525
[Journal article]Authored by: Tozer, P.
Stokes, JR., & Tozer, PR. (2002). Cost minimization and managing soil nutrient loading: Conflict or compromise?. Canadian Journal of Agricultural Economics. 50(2), 151-169
[Journal article]Authored by: Tozer, P.
Tozer, PR. (2002). Grass for Dairy Cattle. NACTA Journal. 46(3), 56-57
[Book Review]Authored by: Tozer, P.
Tozer, PR., & Stokes, JR. (2001). A multi-objective programming approach to feed ration balancing and nutrient management. Agricultural Systems. 67(3), 201-215
[Journal article]Authored by: Tozer, P.
Bailey, K., & Tozer, P. (2001). An evaluation of federal order reform. Journal of Dairy Science. 84(4), 974-986
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Heinrichs, AJ. (2001). What affects the costs of raising replacement dairy heifers: A multiple-component analysis. Journal of Dairy Science. 84(8), 1836-1844
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Stokes, JR. (2001). Using multiple objective programming in a dairy cow breeding program. Journal of Dairy Science. 84(12), 2782-2788
[Journal article]Authored by: Tozer, P.
Tozer, PR. (2001). Investing in Futures and Options Markets.. NACTA Journal. 45(2), 50-51
[Book Review]Authored by: Tozer, P.
Tozer, PR. (2000). Least-cost ration formulations for holstein dairy heifers by using linear and stochastic programming. Journal of Dairy Science. 83(3), 443-451
[Journal article]Authored by: Tozer, P.
Gabler, MT., Tozer, PR., & Heinrichs, AJ. (2000). Development of a cost analysis spreadsheet for calculating the costs to raise a replacement dairy heifer 1. Journal of Dairy Science. 83(5), 1104-1109
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Huffaker, RG. (1999). Mathematical equations to describe lactation curves for Holstein-Friesian cows in New South Wales. Australian Journal of Agricultural Research. 50(3), 431-440
[Journal article]Authored by: Tozer, P.
Tozer, PR., & Huffaker, RG. (1999). Dairy Deregulation and Low-Input Dairy Production: A Bioeconomic Evaluation. Journal of Agricultural and Resource Economics. 24(1), 155-172
[Journal article]Authored by: Tozer, P.
Farrell, TC., & Tozer, PR. (1996). Strategic alliances and marketing cooperatives: A lamb industry case study. Review of Marketing and Agricultural Economics. 64(2), 142-151
[Journal article]Authored by: Tozer, P.
Tozer, PR. (1993). Efficiency aspects of transferable dairy quotas in NSW: A linear programming approach.. Review of Marketing & Agricultural Economics. 61(2), 141-155
[Journal article]Authored by: Tozer, P.

Book

Tozer, P. (2022). Economic impact assessment framework for sand and dust storms. In Sand and Dust Storms Compendium: Information and Guidance on Assessing and Addressing the Risks.
[Chapter]Authored by: Tozer, P.

Report

Tozer, PR., Al-Hemoud, A., & Al-Dousari, A.(2017). Economic impact of sand and dust storms on Kuwait.
[Technical Report]Authored by: Tozer, P.
Galinato, SP., White, D., Tozer, PR., & Gallardo, RK.(2014). The contribution of the mint industry to Washington’s economy. : Washington State University - IMPACT Center
[Technical Report]Authored by: Tozer, P.

Conference

Wangui, J., Kenyon, P., Tozer, P., Millner, J., Pain, S., & Millner, J. (2022). Bioeconomic Modelling to Assess the Impacts of Using Native Shrubs on the Marginal Portions of the Sheep and Beef Hill Country Farms in New Zealand. Poster session presented at the meeting of 34th Annual FLRC Workshop. Palmerston North
[Conference Poster]Authored by: Kenyon, P., Millner, J., Pain, S., Tozer, P.
Jarman, J., Kay, J., Neal, M., Donaghy, D., & Tozer, P. (2020). Implications of using an extended lactation to change from a spring-calving to an autumn-calving farm system in South Taranaki. New Zealand Journal of Animal Science and Production. Vol. 80 (pp. 143 - 149). : New Zealand Society of Animal Science and Production
[Conference Paper in Published Proceedings]Authored by: Donaghy, D., Tozer, P.
Tozer, P., & Marsh, TL.Assessment of Pest or Disease Outbreaks in the US Sweet Cherry Industry. . Melbourne
[Conference Paper]Authored by: Tozer, P.
Lopez-Lozano, SR., Scholtens, MR., Smith, RMC., Lopez-Villalobos, ., Burt, D., Harper, L., . . . schreurs, N. (2017). Brief Communication: Assessing the current value of milk, meat and fibre products from the goat industry in New Zealand. Proceedings of the New Zealand Society of Animal Production. Vol. 77 (pp. 173 - 176). : New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Carr, A., Lopez-Villalobos, N., Schreurs, N., Thomas, D., Tozer, P.
Scholtens, MR., Smith, RMC., Lopez-Lozano, SR., Lopez-Villalobos, N., Burt, D., Harper, L., . . . Schreurs, NM. (2017). The current state of the New Zealand goat industry. Proceedings of the New Zealand Society of Animal Production. Vol. 77 (pp. 164 - 168). : New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Carr, A., Lopez-Villalobos, N., Schreurs, N., Thomas, D., Tozer, P.
Smith, RMC., Scholtens, MR., Lopez-Lozano, SR., Lopez-Villalobos, ., Burt, D., Harper, L., . . . Schreurs, . (2017). Brief communication: The potential of the New Zealand goat industry. Proceedings of the New Zealand Society of Animal Production. Vol. 77 (pp. 169 - 172). : New Zealand Society of Animal Production
[Conference Paper in Published Proceedings]Authored by: Carr, A., Lopez-Villalobos, N., Schreurs, N., Thomas, D., Tozer, P.
Tozer, PR., & Siddique, MI.Impact of feeding systems on the profit and profit efficiency of New Zealand dairy farms. . Edinburgh, Scotland
[Conference Paper]Authored by: Tozer, P.
Tozer, PR., & Siddique, MI. (2016, August). Ownership, region, system or? What leads to efficiency?. Presented at New Zealand Agricultural and Resource Economics Society. Nelson, New Zealand.
[Conference Oral Presentation]Authored by: Tozer, P.
Tozer, PR., & Fisher, J. (2016, February). Economic analyses of cropping options in future climates. Presented at Agribusiness Crop Updates 2016. Perth, Western Australia.
[Conference Oral Presentation]Authored by: Tozer, P.

Other

Siddique, MI., Tozer, P., & Shadbolt, NM. (2018). Investigating Performance of NZ Pastoral Systems in different regions - Three good and Three Bad Years.
[Working Paper]Authored by: Shadbolt, N., Tozer, P.
Galinato, SP., & Tozer, PR. (2016). 2015 Estimated cost of establishing and producing hops in the Pacific Northwest. (pp. 1 - 9). Washington State University Extension
[Other]Authored by: Tozer, P.
Cassey, AJ., Lee, K., Sage, J., & Tozer, PR. (2016). Assessing the impact of a labor shortage on post-harvest activities and markets. Washington State University Extension
[Other]Authored by: Tozer, P.
Galinato, SP., & Tozer, PR. (2016). 2015 Costs estimates of producing fresh and processing potatoes in Washington. (pp. 1 - 6). Washington State University Extension
[Other]Authored by: Tozer, P.

Teaching and Supervision

Summary of Doctoral Supervision

Position Current Completed
Main Supervisor 5 4
Co-supervisor 3 2

Current Doctoral Supervision

Main Supervisor of:

  • Jinya Chen - Doctor of Philosophy
    An Exploratory Research on Designing Breakfast Cereal for Myopia Control for Chinese Children
  • Racheal Tikatikan - Doctor of Philosophy
    Improving the value of cocoa in the cocoa production value chain segment through sustainable agrifood value chain transformation.
  • Joseph Adjabui - Doctor of Philosophy
    Bioeconomic modelling of sheep and beef farm systems in New Zealand to investigate the impact of management changes on methane emissions and farm profitability.
  • Ashmita Pandey - Doctor of Philosophy
    Understanding the magnitude and determinants of food loss and waste in the broccoli supply chain: Seasonal and varietal perspectives
  • Amira Mahmoud Mahmoud - Doctor of Philosophy
    Advancing Black Soldier Fly (Hermetia illucens L.) Production and Nutrition: A Sustainable Solution for Poultry Feeding

Co-supervisor of:

  • Oudom Tem - Doctor of Philosophy
    Agro-industrial development in Cambodia and the value chains it links - An Investment Perspective
  • Nelma Ngonga - Doctor of Philosophy
    An examination of methods for estimating enteric methane emissions from dairy cows in the inventory: A case study in New Zealand
  • Erandi Kalehe Kankanamge - Doctor of Philosophy
    Developing cost-effective GHG mitigation options for New Zealand dairy farming systems

Completed Doctoral Supervision

Main Supervisor of:

  • 2023 - Kyan Htoo - Doctor of Philosophy
    Identifying Characteristics and Drivers of the Maize Value Chain in Shan State, Myanmar
  • 2022 - Elham Shokri - Doctor of Philosophy
    Perceived adaptive capacity of New Zealand dairy farmers in the face of policy and economic volatility
  • 2021 - Morteza Ghahremani - Doctor of Philosophy
    An economic analysis of a robotic harvest technology in New Zealand fresh apple industry
  • 2020 - Lydia Farrell - Doctor of Philosophy
    Bio-economic system-dynamics modelling to investigate strategic management options in New Zealand sheep farming enterprises.

Co-supervisor of:

  • 2024 - David Ahiamadia - Doctor of Philosophy
    Optimising risk and income under climate variability in Northern Ghana. A bio-economic modelling approach
  • 2023 - James Wangui - Doctor of Philosophy
    Use of New Zealand native browse shrubs on sheep and beef hill country farms.