Landcare Research - Manaaki Whenua

Landcare-Research -Manaaki Whenua

John Drewry

John Drewry
Position: Researcher Soil Physics
Team: Soils & Landscapes
Location: Palmerston North
Private Bag 11052
Manawatu Mail Centre
Palmerston North 4442

Research Interests

Research Interests

Research and professional interests

Research in soil physics and processes regulating water and nutrient flows through soils under different management and irrigation regimes and at multiple scales

Research of diffuse nutrient and contaminant losses, nutrient cycling, runoff and leaching from land management practices and farm systems

Research of farm mitigations and land management practices, soil quality indicators, soil physics, soil compaction, and pasture yield responses

Soil quality and indicators, and environmental reporting

Modelling catchment-scale water quality, diffuse sediment, and nutrients. Developing regional-scale strategic water quality improvement plans


Selected publications

Drewry, J.J., Manderson, A.K., Hedley, C.B.  2019. Evaluation of irrigation strategies for arable farms to mitigate nitrogen loss using the Overseer model. In: Nutrient loss mitigations for compliance in agriculture. Occasional Report No. 32. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand. 11 p.


Drewry, J.J., Cavanagh, J.E., McNeill, S., Taylor, M.D.  2018. Long term monitoring of soil quality including trace elements in the Wellington region. In: Farm environmental planning – Science, policy and practice. Occasional Report No. 31. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand. 11 p.


Taylor, M.D, Drewry, J.J., Stevenson, B., Cavanagh, J.E., Foster, N., Curran-Cournane, F. 2018. How closely do different Olsen P measures correlate? In: Farm environmental planning – Science, policy and practice. Occasional Report No. 31. Fertilizer and Lime Research Centre, Massey University, Palmerston North, New Zealand. 10 p.


Drewry, J.J., Parkes, R., Taylor, M.D. 2017. Soil quality and trace element monitoring in the Wellington region and implications for farm management. In: Science and policy: nutrient management challenges for the next generation. Occasional Report No. 30. Fertilizer and Lime Research Centre, Massey University. 12 p.


Kim, N.D., Taylor, M, Drewry, J. 2016. Anthropogenic fluorine accumulation in the Waikato and Bay of Plenty regions of New Zealand: comparison of field-data with projections. Environmental Earth Sciences 75: 1-15. Article 147.


Drewry, J., Curran-Cournane, F., Taylor, M., Lynch, B. 2015. Soil quality monitoring across land uses in four regions:  implications for reducing nutrient losses and for national reporting. In: Moving farm systems to improved nutrient attenuation. Occasional Report No. 28. Fertilizer and Lime Research Centre, Massey University. 14 p.


Drewry, J. J., Newham, L. T. H., Greene, R. S. B. 2011. Index models to evaluate the risk of phosphorus and nitrogen loss at catchment-scales. Journal of Environmental Management 92: 639-649.


Drewry, J., Dostine P.L., Fortune, J., Majid, M., Schult, J., Lamche, G. 2010. Darwin Harbour region report cards. Report No 25/2010D. Department of Natural Resources, Environment, the Arts and Sport. Darwin. 67 p.


Lynam, T, Drewry, J., Higham, W., Mitchell, C. 2010. Adaptive modelling for adaptive water quality management in the Great Barrier Reef region, Australia. Environmental Modelling and Software 25: 1291-1301.


Houlbrooke, D., Drewry, J. J., Monaghan, R. M., Paton, R. J., Smith, L. C., Littlejohn, R. P.  2009. Grazing strategies to protect soil physical properties and maximize pasture yield on a Southland dairy farm. New Zealand Journal of Agricultural Research 52: 323–336.


Drewry, J. J., Newham, L. T. H., Croke, B. F.W. 2009. Suspended sediment, nitrogen and phosphorus concentrations and exports during storm-events to the Tuross estuary, Australia. Journal of Environmental Management 90: 879–887.


Monaghan, R. M., Carey, P. L., Wilcock, R. J., Drewry, J. J., Houlbrooke, D. J., Quinn, J.M., Thorrold, B. S. 2009. Linkages between land management activities and stream water quality in a border dyke-irrigated pastoral catchment. Agriculture, Ecosystems and Environment 129: 201–211.


Drewry, J. J., Cameron, K. C., Buchan, G. D. 2008. Pasture yields and soil physical property responses to soil compaction from treading and grazing: a review. Australian Journal of Soil Research 46: 237–256.


Drewry, J., Higham, W., Mitchell, C. 2008. Water quality improvement plan. Final report for Mackay Whitsunday region. Mackay Whitsunday Natural Resource Management Group. 192 p.


Drewry, J. J., Newham, L. T. H., Greene, R. S. B., Jakeman, A. J., Croke, B. F.W. 2006. A review of nitrogen and phosphorus export to waterways: context for catchment modelling. Marine and Freshwater Research 57: 757–774.


Drewry, J. J. 2006. Natural recovery of soil physical properties from treading damage of pastoral soils in New Zealand and Australia: a review. Agriculture, Ecosystems and Environment 114: 159–169.


Drewry, J. J., Paton, R. J. 2005. Soil physical quality under cattle grazing of a winter-fed brassica crop. Australian Journal of Soil Research 43: 525–531.


Monaghan, R. M., Paton, R. J., Smith, L. C., Drewry, J. J., Littlejohn, R. P. 2005. The impacts of nitrogen fertilisation and increased stocking rate on pasture yield, soil physical condition and nutrient losses in drainage from a cattle-grazed pasture. New Zealand Journal of Agricultural Research 48: 227–240.


McDowell, R.W., Drewry, J. J., Muirhead, R. W., Paton, R. J. 2005. Restricting the grazing time of cattle to decrease phosphorus, sediment and E. coli losses in overland flow from cropland. Australian Journal of Soil Research 43: 61–66.


Drewry, J. J., Paton, R. J., Monaghan, R. M. 2004. Soil compaction and recovery cycle on a Southland dairy farm: implications for environmental monitoring. Australian Journal of Soil Research 42: 851–856.


Drewry, J. J., Littlejohn, R. P., Paton, R. J., Singleton, P. L., Monaghan, R. M., Smith, L. C. 2004. Dairy pasture responses to soil physical properties. Australian Journal of Soil Research 42: 99–105.


McDowell, R.W., Drewry, J. J., Paton, R. J. 2004. Effects of deer grazing and fence-line pacing on water and soil quality. Soil Use and Management 20: 302–307.


Carey, P. L., Drewry, J. J., Muirhead, R. W. 2004. Potential for nutrient and faecal bacteria losses from a dairy pasture under border-dyke irrigation: a case study. Proceedings of the New Zealand Grassland Association 66: 141–149.


McDowell, R.W., Drewry, J. J., Muirhead, R. W., Paton, R. J. 2003. Cattle treading and phosphorus and sediment loss in overland flow from grazed cropland.  Australian Journal of Soil Research 41: 1521–1532.


McDowell, R.W., Drewry, J. J., Carey, P. L., Paton, R. J., Monaghan R.M., Condron, L.M. 2003. Influence of soil treading on sediment and phosphorus losses in overland flow. Australian Journal of Soil Research 41: 949–961.


Monaghan, R. M., Paton, R. J., Drewry, J. J. 2002. Nitrogen and phosphorus losses in mole- and tile-drainage from a cattle-grazed pasture in eastern Southland. New Zealand Journal of Agricultural Research 45: 197–205.


Monaghan, R M, Morton, J. D., McDowell, R. W., Drewry, J. J., Thorrold, B. S. 2003. The development of environmental best practices for intensive dairying. Proceedings of the New Zealand Society of Animal Production 63: 3–6.


de Klein, C. A. M., Drewry, J. J., Nagels, J. W., Scarsbrook, M., Collins, R., McDowell, R. W., Muirhead, R. 2003. Environmental impacts of intensive deer farming in New Zealand. In: The nutrition and management of deer on grazing systems. Grassland Research and Practice Series no 9. New Zealand Grassland Association. Pp 79–87.


Betteridge, K., Drewry, J., MacKay, A., Singleton, P. 2003. Managing treading damage on dairy and beef farms in New Zealand. Booklet for farmers and industry. AgResearch. 35 p.


Drewry, J. J. 2003. Dairy grazing strategies to minimise soil pugging and compaction in Waikato. Proceedings of the New Zealand Grassland Association 65: 99–103.


Drewry, J. J., Singleton, P. L., Boyes, M, Judge, A., Wheeler, D. 2003. Short term recovery of soil physical properties after winter grazing in Waikato: implications for environmental monitoring. In: Tools for nutrient and pollutant management: applications to agriculture and environmental quality. Massey University, Palmerston North, New Zealand. Fertiliser and Lime Research Centre. Occasional Report 17: 194–204.


Drewry, J. J, Cameron, K. C., Buchan, G. D. 2001. Effects of simulated dairy cow treading on soil physical properties and ryegrass pasture yield. New Zealand Journal of Agricultural Research 44: 181–190.


Drewry, J. J, Paton, R. J. 2000. Effect of subsoiling on soil physical properties and pasture production on a Brown Soil in Southland. New Zealand Journal of Agricultural Research 43: 259–268.


Drewry, J. J, Lowe, J. A. H., Paton, R. J. 2000. Effect of subsoiling on soil physical properties and pasture production on a Pallic Soil in Southland. New Zealand Journal of Agricultural Research 43: 269–277.


Drewry, J. J, Lowe, J. A. H., Paton, R. J. 1999. Effect of sheep stocking intensity on soil physical properties and dry matter production on a Pallic Soil in Southland. New Zealand Journal of Agricultural Research 42: 493–499.


Monaghan, R. M., Carey, P., Metherell, A. K., Singleton, P. L, Drewry J., Addison, B. 1999.  Depth distribution of simulated urine in a range of soils soon after deposition. New Zealand Journal of Agricultural Research 42: 501–511.


Qualifications

Qualifications

  • Australian National University
    PhD Environment
    2009
  • Lincoln
    M. Appl. Sci (Hons) Soil Science
    2001
  • Massey
    Dip. Bus. Admin
    1990
  • Massey
    B. Agr. Sci
    1989

Skills

Skills

  • Soil physics and soil quality
  • Nutrient losses from farm systems
  • Catchment modelling
  • Water quality