Nutrient management in New Zealand pastures— recent developments and future issues

References

• Amberger , A . 1989 . Research on dicyandiamide as a nitrification inhibitor and future outlook . Communications in Soil Science and Plant Analysis , 20 : 1933 – 1955 .
   Web of Science ®Google Scholar
• Bargh , B . 1978 . Output of water, suspended sediment, and phosphorus and nitrogen forms from a small agricultural catchment . New Zealand Journal of Agricultural Research , 21 : 29 – 38 .
   Web of Science ®Google Scholar
• Barry , TN , Manley , TR and Duncan , SJ . 1986 . The role of condensed tannins in the nutritional value of Lotus pedunculatus for sheep. 4. Sites of carbohydrate and protein digestion as influenced by dietary reactive tannin concentration . British Journal of Nutrition , 55 : 123 – 137 .
   PubMed Web of Science ®Google Scholar
• Betteridge , K , Ledgard , SF , Hoogendoorn , CJ , Lambert , MG , Park , ZA , Costall , DA and Theobald , PW . Optimisation of nutrient cycling and soil quality for sustainable grasslands . XXth International Grasslands Congress . Oxford, UK. Nitrogen leaching from cattle, sheep and deer grazed pastures in New Zealand , Edited by: Jarvis , SC , Murray , PJ and Roker , JA . pp. 80
   Google Scholar
• Betteridge , K , Ledgard , SF , Lambert , MG , Thorrold , BS , Costall , DA , Theobald , PW , Hoogendoorn , CJ and Park , ZA . 2005b . “ Reduced nitrate leaching from livestock in the Lake Taupo catchment: results from 2 years research ” . In Second European Conference on Precision Livestock Farming , Edited by: Stafford , JV . 49 – 56 . The Netherlands : Wageningen Academic Publishers .
   Google Scholar
• Bewsell , D and Kaine , G . Adoption of environmental best practice amongst dairy farmers . Proceedings of the New Zealand Agricultural and Resource Economics Society Conference . Vol. 11 , pp. 9 – 18 .
   Google Scholar
• Black , AS , Sherlock , RR , Smith , NP , Cameron , KC and Goh , KM . 1984 . Effect of previous urine application on ammonia volatilisation from 3 nitrogen fertilisers . New Zealand Journal of Agricultural Research , 27 : 413 – 416 .
   Web of Science ®Google Scholar
• Black , AS , Sherlock , RR , Smith , NP , Cameron , KC and Goh , KM . 1985 . Effects of form of nitrogen, season, and urea application rate on ammonia volatilisation from pastures . New Zealand Journal of Agricultural Research , 28 : 469 – 474 .
   Web of Science ®Google Scholar
• Blennerhassett , J , Gillingham , A , Quin , B and Gray , M . 2007 . “ Effect of P fertiliser form on P run‐off—a catchment scale study ” . In Designing sustainable farms: critical aspects of soil and water management , Edited by: Currie , LD and Hanly , JA . Palmerston North : Fertiliser and Lime Research Centre . Occasional Report No. 19. (in press)
   Google Scholar
• Botha , N and Parminter , T . The suitability of available technologies and responses to Government policies for improving waterway quality . 12th International Symposium on Society and Resource Management. Global challenges and local responses . 3–8 July . pp. 26 Vancouver, BC, , Canada : University of British Columbia . Abstract.
   Google Scholar
• Bush , BJ and Austin , NR . 2001 . Timing of phosphorus fertilizer application within an irrigation cycle for perennial pasture . Journal of Environmental Quality , 30 : 939 – 946 .
   PubMed Web of Science ®Google Scholar
• Cameron , KC , Di , HJ and McLaren , RG . 1997 . Is soil an appropriate dumping ground for our wastes? . Australian Journal of Soil Research , 35 : 995 – 1035 .
   Web of Science ®Google Scholar
• Carey , PL , Drewry , JJ , Muirhead , RW and Monaghan , RM . 2004 . Potential for nutrient and faecal bacteria losses from a dairy pasture under border dyke irrigation: a case study . Proceedings of the New Zealand Grasslands Association , 66 : 141 – 150 .
   Google Scholar
• Chadwick , DR , Ledgard , SF and Brown , L . 2002 . “ Nitrogen flows and losses in dairy farms in New Zealand and the UK: effects of grazing management ” . In Dairy farm soil management , Occasional Report No. 15 Edited by: Currie , LD and Loganathan , P . 319 – 332 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Cornforth , IS , Sinclair , AG and Parker , B . 1982 . The MAF fertiliser recommendation scheme . Proceedings of the Ruakura Farmers’ Conference , 34 : 49 – 51 .
   Google Scholar
• Craggs , RJ , Sukias , JP , Tanner , CT and Davies‐Colley , RJ . 2004 . Advanced pond system for dairy‐farm effluent treatment . New Zealand Journal of Agricultural Research , 47 : 449 – 460 .
   Web of Science ®Google Scholar
• Crush , JR and Easton , HS . 2004 . Screening for variation in root distribution in ryegrass (Lolium perenne L.) . Acta Physiologiae Plantarium , 26 ( 3 ) : 71 Supplement.
   Web of Science ®Google Scholar
• de Klein , CAM , Paton , J and Ledgard , SF . 2001 . An evaluation of a strategic de‐stocking regime for dairying to improve nitrogen efficiency and reduce nitrogen losses from dairy farms in nitrate‐sensitive areas . Proceedings of the New Zealand Grassland Association , 62 : 105 – 110 .
   Google Scholar
• de Klein , CAM , Smith , LC and Monaghan , RM . 2006 . Restricted autumn grazing to reduce nitrous oxide emissions from dairy pastures in Southland, New Zealand . Agriculture, Ecosystems and Environment , 112 : 192 – 199 .
   Web of Science ®Google Scholar
• Di , HJ and Cameron , KC . 2002a . Nitrate leaching in temperate agroecosystems: sources, factors and mitigating strategies . Nutrient Cycling in Agroecosystems , 64 : 237 – 256 .
   Web of Science ®Google Scholar
• Di , HJ and Cameron , KC . 2002b . The use of a nitrification inhibitor, dicyandiamide (DCD), to reduce nitrate leaching from cow urine patches in a grazed dairy pasture under irrigation . Soil Use and Management , 18 : 395 – 403 .
   Web of Science ®Google Scholar
• Di , HJ and Cameron , KC . 2002c . Nitrate leaching and pasture production from different nitrogen sources on a shallow stony soil under flood irrigated dairy pasture . Australian Journal of Soil Research , 40 : 317 – 334 .
   Web of Science ®Google Scholar
• Di , HJ and Cameron , KC . 2003 . Mitigation of nitrous oxide emissions in spray‐irrigated grazed grassland by treating the soil with dicyandiamide, a nitrification inhibitor . Soil Use and Management , 19 : 284 – 290 .
   Web of Science ®Google Scholar
• Di , HJ and Cameron , KC . 2004a . Treating grazed pasture soil with a nitrification inhibitor, eco‐n™, to decrease nitrate leaching in a deep sandy soil under spray irrigation—a lysimeter study . New Zealand Journal Agricultural Research , 47 : 351 – 361 .
   Web of Science ®Google Scholar
• Di , HJ and Cameron , KC . 2004b . Effects of the nitrification inhibitor, diacyandiamide on potassium, magnesium and calcium leaching in grazed grassland . Soil Use and Management , 20 : 2 – 7 .
   Web of Science ®Google Scholar
• Di , HJ and Cameron , KC . 2005 . Reducing environmental impacts of agriculture by using a fine particle suspension nitrification inhibitor to decrease nitrate leaching from grazed pastures . Agriculture, Ecosystems and Environment , 109 : 202 – 212 .
   Web of Science ®Google Scholar
• Di , HJ , Cameron , KC and Sherlock , RR . 2007 . Comparison of the effectiveness of a nitrification inhibitor, dicyandiamide (DCD), in reducing nitrous oxide emissions in four different soils under different climatic and management conditions . Soil Use and Management , 23 : 1 – 9 .
   Web of Science ®Google Scholar
• Dooley , AE , Smeaton , D and Ledgard , SF . 2005 . Identification of important criteria in farm systems decisions around Lake Taupo . New Zealand Agricultural and Resource Economics Society , : 27 – 35 . AERU No. 152
   Google Scholar
• During , C . 1984 . Fertilisers and soils in New Zealand farming , 361 Wellington, , New Zealand : Government Printer .
   Google Scholar
• Edmeades , DC , Thorrold , BS and Roberts , AHC . 2005 . The diagnosis and correction of sulphur deficiency and the management of sulphur requirements in New Zealand pastures: a review . Australian Journal of Experimental Agriculture , 45 : 1205 – 1223 .
   Google Scholar
• Edmeades , DC , Metherell , AK , Waller , JE , Roberts , AHC and Morton , ID . 2006 . Defining the relationships between pasture production and soil P and the development of a dynamic P model for New Zealand pastures: a review of recent developments . New Zealand Journal Agricultural Research , 49 : 207 – 222 .
   Web of Science ®Google Scholar
• Environment Waikato . 1994 . Dairy shed operative plan , 31 Hamilton : Environment Waikato Technical Publication. Environment Waikato .
   Google Scholar
• Gillingham , AG and Gray , MG . 2006 . Measurement and modelling of runoff and phosphate movement from seasonally dry hill‐country pastures . New Zealand Journal of Agricultural Research , 49 : 233 – 245 .
   Web of Science ®Google Scholar
• Gillingham , AG and Thorrold , BS . 2000 . A review of New Zealand research measuring phosphorus in runoff from pasture . Journal of Environmental Quality , 29 : 88 – 96 .
   Web of Science ®Google Scholar
• Hart , RPS , Larcombe , MT , Sherlock , RA and Smith , LA . 1998 . Optimisation techniques for a computer simulation of a pastoral dairy farm . Computers and Electronic sin Agriculture , 19 : 129 – 153 .
   Web of Science ®Google Scholar
• Hart , MR , Quin , BF and Nguyen , ML . 2004 . Phosphorus runoff from agricultural land and direct fertilizer effects: a review . Journal of Environmental Quality , 33 : 1954 – 1972 .
   PubMed Web of Science ®Google Scholar
• Haynes , RJ and Williams , PH . 1993 . Nutrient cycling and soil fertility in the grazed pasture ecosystem . Advances inAgronomy , 49 : 119 – 199 .
   Web of Science ®Google Scholar
• Hedley , MJ , Dodd , M and Vercoe , R . Juggling the supplement plus fertiliser nutrient balance—a responsible approach . Proceedings of the 2nd Dairy3Conference . Vol. 2 , pp. 49 – 60 . Palmerston North : Massey University .
   Google Scholar
• Hedley , MJ , Hanly , JA , Horne , DJ , Houlbrooke , D , Brether‐ton , MR and Snow , V . 2005 . “ Storage and deferred irrigation of farm dairy effluent: critical components of environmentally responsible dairying ” . In Developments in fertiliser application technologies and nutrient management , Occasional Report No. 18 Edited by: Currie , LD and Hanly , JA . 114 – 123 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Hickey , CW , Quinn , JM and Davies‐Colley , RJ . 1989 . Effluent characteristics of dairy shed oxidation ponds and their potential impacts on rivers . New Zealand Journal of Marine and Freshwater Research , 23 : 569 – 584 .
   Web of Science ®Google Scholar
• Houlbrooke , DJ , Horne , DJ , Hedley , MJ , Hanly , JA and Snow , VO . 2003 . The impact of intensive dairy farming on the leaching losses of nitrogen and phosphorus from a mole and pipe drained soil . Proceedings of the New Zealand Grassland Association , 65 : 179 – 184 .
   Google Scholar
• Houlbrooke , DJ , Monaghan , RM , Smith , LC and Nicolson , C . 2006 . “ Reducing contaminant losses from land applied farm dairy effluent using K‐line irrigation systems ” . In Implementing sustainable nutrient management strategies in agriculture , Occasional Report No. 19 Edited by: Currie , LD and Hanly , JA . 290 – 300 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Lambert , MG , Devantier , BP , Nes , P and Penny , PE . 1985 . Losses of nitrogen, phosphorus and sediment in runoff from hill country under different fertiliser and grazing management regimes . New Zealand Journal of Agricultural Research , 28 : 371 – 379 .
   Web of Science ®Google Scholar
• Larcombe , MT . 1999 . UDDER for Windows: A desktop dairyfarm for extension and research—operating manual , Maffra, Victoria, , Australia : Maffra Herd Improvement Co‐op .
   Google Scholar
• Ledgard , SF . 2001 . Nitrogen cycling in low input legume‐based agriculture, with emphasis on legume/grass pastures . Plant and Soil , 228 : 43 – 59 .
   Web of Science ®Google Scholar
• Ledgard , SF and Brier , GJ . 2004 . Estimation of the proportion of animal excreta transferred to the farm dairy effluent system , Report for Ministry of Agriculture and Forestry 10
   Google Scholar
• Ledgard , SF , Steele , KW and Feyter , C . 1988 . Influence of time of application on the fate of 15N‐labelled urea applied to dairy pasture . New Zealand Journal of Agricultural Research , 31 : 87 – 91 .
   Web of Science ®Google Scholar
• Ledgard , SF , Thom , ER , Thorrold , BS and Edmeades , DC . Environmental impacts of dairy systems . Proceedings of the Ruakura Farmers’ Conference . Vol. 48 , pp. 26 – 33 .
   Google Scholar
• Ledgard , SF , Williams , PH , Broom , FD , Thorrold , BS , Wheeler , DM and Willis , VJ . 1999a . “ OVERSEER®—a nutrient budgeting model for pastoral farming, wheat, potatoes, apples and kiwifruit ” . In Best soil management practices for production , Occasional Report No. 12 Edited by: Currie , LD , Hedley , MJ , Home , DJ and Loganathan , P . 143 – 152 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Ledgard , SF , Penno , JW and Sprosen , MS . 1999b . Nitrogen inputs and losses from clover/grass pastures grazed by dairy cows, as affected by nitrogen fertilizer application . Journal of Agricultural Science, Cambridge , 132 : 215 – 225 .
   Web of Science ®Google Scholar
• Ledgard , SF , Finlayson , JD , Gavin , J , Blackwell , MD , Carran , RA , Wedderburn , ME and Jollands , NA . 2003 . Resource use efficiency and environmental emissions from an average Waikato dairy farm, and impacts of intensification using nitrogen fertiliser or maize silage . Proceedings of the New Zealand Grassland Association , 65 : 185 – 189 .
   Google Scholar
• Ledgard , S , Sprosen , M , Judge , A , Lindsey , S , Jensen , R , Clark , D and Luo , J . 2006a . “ Nitrogen leaching as affected by dairy intensification and mitigation practices in the resource efficient dairying (RED) trial ” . In Implementing sustainable nutrient management strategies in agriculture , Occasional Report No. 19 Edited by: Currie , LD and Hanly , JA . 263 – 268 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Ledgard , S , Law , G , Dragten , R , Power , I , Webby , R and Dooley , E . 2006b . “ Benchmarking of farms around Lake Taupo and alternative farm system options: issues and implications ” . In Implementing sustainable nutrient management strategies in agriculture , Occasional Report No. 19 Edited by: Currie , LD and Hanly , JA . 445 – 451 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Ledgard , SF , Menneer , JC , Dexter , MM , Kear , MJ , Lindsey , S , Peters , JS and Pacheco , D . 2007 . A novel concept to reduce nitrogen losses from grazed pastures by administering soil N process inhibitors to animals . Agriculture, Ecosystems and Environment , (in press)
   PubMed Web of Science ®Google Scholar
• Longhurst , RD , Roberts , AHC and O'Connor , MB . 2000 . Farm dairy effluent: a review of published data on chemical and physical characteristics in New Zealand . New Zealand Journal of Agricultural Research , 43 : 7 – 14 .
   Web of Science ®Google Scholar
• Luo , J , Ledgard , S and Lindsey , S . 2006 . “ Nitrous oxide emissions from dairy farm systems ” . In Implementing sustainable nutrient management strategies in agriculture , Occasional Report No. 19 Edited by: Currie , LD and Hanly , JA . 269 – 280 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• McColl , RHS , White , E and Gibson , AR . 1977 . Phosphorus and nitrate run‐off in hill pasture and forest catchments, Taita, New Zealand . New Zealand Journal of Marine and Freshwater Research , 11 : 729 – 744 .
   Web of Science ®Google Scholar
• McDowell , RW . 2005 . The effectiveness of coal fly‐ash to decrease phosphorus loss from grassland soils . Australian Journal of Soil Research , 43 : 853 – 860 .
   Web of Science ®Google Scholar
• McDowell , RW . 2006 . Phosphorus and sediment loss in a catchment with winter forage grazing of cropland by dairy cattle . Journal of Environmental Quality , 35 : 575 – 583 .
   PubMed Web of Science ®Google Scholar
• McDowell , RW and Catto , W . 2005 . Alternative fertilisers and management to decrease incidental phosphorus loss . Environmental Chemistry Letters , 2 : 169 – 174 .
   Web of Science ®Google Scholar
• McDowell , RW and Condron , LM . 2004 . Estimating phosphorus loss from New Zealand grassland soils . New Zealand Journal of Agricultural Research , 47 : 137 – 145 .
   Web of Science ®Google Scholar
• McDowell , RW and Hawke , M . 2006 . Assessment of a novel technique to remove phosphorus from streamflow , Client Report for Environment Bay of Plenty 17 Mosgiel : AgResearch, Invermay Agricultural Centre .
   Google Scholar
• McDowell , RW , Monaghan , RM and Morton , J . 2003a . Soil phosphorus concentrations to minimise P loss to surface waters in Southland . New Zealand Journal of Agricultural Research , 46 : 239 – 253 .
   Web of Science ®Google Scholar
• McDowell , RW , Monaghan , RM and Carey , PL . 2003b . Potential phosphorus losses in overland flow from pastoral soils receiving long‐term applications of either superphosphate or reactive phosphate rock . New Zealand Journal of Agricultural Research , 46 : 329 – 337 .
   Web of Science ®Google Scholar
• McDowell , RW , Biggs , BJF , Sharpley , AN and Nguyen , L . 2004 . Connecting phosphorus loss from agricultural landscapes to surface water quality . Chemistry and Ecology (London) , 20 : 1 – 40 .
   Google Scholar
• McDowell , RW , Drewry , JJ , Muirhead , RW and Paton , RJ . 2005a . 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 .
   Web of Science ®Google Scholar
• McDowell , RW , Sharpley , AN , Bourke , B and Hopkins , K . Land treatment of wastewater and stormwater in urban catchments . Proceedings of the New Zealand Land Treatment Collective Conference . Rotorua. Treatment of drainage water with industrial by‐products to prevent phosphorus loss from tile‐drained land receiving effluent , Edited by: Wang , H and Lavery , J . pp. 218 – 224 .
   Google Scholar
• McDowell , RW , Monaghan , RM and Wheeler , D . 2005c . Modelling phosphorus losses from pastoral farming systems in New Zealand . New Zealand Journal ofAgricultural Research , 48 : 131 – 141 .
   Web of Science ®Google Scholar
• McDowell , RW , McGrouther , N , Morgan , G , Srinivasan , MS , Stevens , D , Johnson , M and Copland , R . 2006 . Monitoring of the impact of farm practices on water quality in the Otago and Southland deer focus farms . Proceedings of the New Zealand Grassland Association , 68 : 183 – 188 .
   Google Scholar
• Macgregor , AN , Stout , JD and Jackson , RJ . 1979 . Quality of drainage water from pasture treated with dairy shed effluent . Progress in Water Technology , 11 : 11 – 17 .
   Google Scholar
• MAF . 2007 . “ A short‐term financial and physical forecast reflecting farmer and industry perceptions of farming figures, trends and issues ” . In New Zealand Ministry of Agriculture and Forestry monitoring reports on the production and financial status of farms and orchards http://www.maf.govt.nz/mafnet/rural‐nz/statistics‐and‐forecasts/farm‐monitoring/index.htm [accessed 1 April 2007]
   Google Scholar
• Marshall , PR , McCall , DG and Johns , KL . 1991 . Stockpol: a decision support model for livestock farms . Proceedings of the New Zealand Grassland Association , 53 : 137 – 140 .
   Google Scholar
• Metherell , AK . 1999 . “ Economic assessment of fertiliser strategies for pastoral farms ” . In Best soil management practices for production , Occasional Report No. 12 Edited by: Currie , LD , Hedley , MJ , Horne , DJ and Loganathan , P . 127 – 142 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Metherell , AK , Thorrold , BS , Woodward , SJR , McCall , DG , Marshall , PR , Morton , JD and Johns , KL . 1997 . A decision support model for fertiliser recommendations for grazed pasture . Proceedings of the New Zealand Grassland Association , 59 : 137 – 140 .
   Google Scholar
• Miller , LA , Moorby , JM , Davies , DR , Humphreys , MO , Scollan , ND , Macrae , JC and Theodorou , MK . 2001 . Increased concentration of water‐soluble carbohydrate in perennial ryegrass (Lolium perenne L.). Milk production from late‐lactation dairy cows . Grass and Forage Science , 56 : 383 – 394 .
   Web of Science ®Google Scholar
• Ministry for the Environment . 2005 . New Zealand's Greenhouse Gas Inventory 1990–2003 , Wellington : Ministry for the Environment .
   Google Scholar
• Moir , J , Cameron , KC and Di , HJ . 2007 . Effects of the nitrification inhibitor dicyandiamide on soil mineral N, pasture yield, nutrient uptake and pasture quality in a grazed pasture system . Soil Use and Management , doi:10.1111/j.1475–2743.2006.00078.x
   Web of Science ®Google Scholar
• Monaghan , RM and Smith , LC . 2004 . Minimising surface water pollution resulting from farm‐dairy effluent application to mole‐pipe drained soils. II. The contribution of preferential flow of effluent to whole‐farm pollutant losses in subsurface drainage from a West Otago dairy farm . New Zealand Journal of Agricultural Research , 47 : 417 – 429 .
   Web of Science ®Google Scholar
• Monaghan , RM , Paton , RJ , Smith , LC , Drewry , JJ and Littlejohn , RP . 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 .
   Web of Science ®Google Scholar
• Monaghan , RM , Wilcock , RJ , Smith , LC , Tikkisetty , B , Thorrold , BS and Costall , D . 2007 . Linkages between land management activities and water quality in an intensively farmed catchment in southern New Zealand . Agriculture, Ecosystems and Environment , 118 : 211 – 222 .
   Web of Science ®Google Scholar
• Morton , JD and Gillingham , AG . Potassium fertiliser use in New Zealand Pastoral Agriculture . PO‐TOZ'05—2nd Workshop on Potassium in Australian Agriculture . November 2005 , Melbourne.
   Google Scholar
• Morton , JD and Roberts , AHC . 1999 . Fertiliser use onNew Zealand sheep and beef farms , 40 New Zealand Fertiliser Manufacturers’ Research Association .
   Google Scholar
• Morton , JD , Smith , LC , Dodds , KG and Catto , WD . 2001 . Balanced and adequate potassium and phosphorus nutrition of pasture . New Zealand Journal of Agricultural Research , 44 : 269 – 278 .
   Web of Science ®Google Scholar
• Nash , D , Hannah , M , Clemow , L , Halliwell , D , Webb , B and Chapman , D . 2004 . A field study of phosphorus mobilisation from commercial fertilisers . Australian Journal of Soil Research , 42 : 313 – 320 .
   Web of Science ®Google Scholar
• NZFMRA . 2006 . “ Nutrient management plans ” . In Fertiliser matters, Issue 38 , New Zealand Fertiliser Manufacturers’ Research Association . http://www.fertresearch.org.nz/at‐tachments/document/FertMattersSept06.pdf
   Google Scholar
• Parminter , I . Farm dairy effluent and water quality: a case study of a Waikato catchment . Proceedings of the New Zealand Agricultural Economics Society Conference . Blenheim. pp. 192 – 201 . AERU Discussion Paper No. 142
   Google Scholar
• Quinn , JM and Stroud , MJ . 2002 . Water quality and sediment and nutrient export from New Zealand hill‐land catchments of contrasting land use . New Zealand Journal of Marine and Freshwater Research , 36 : 409
   Web of Science ®Google Scholar
• Rajendram , GS , Ledgard , SF , Monaghan , RM , Sprosen , MS and Ouyang , L . 1998 . “ Effect of rate of nitrogen fertilizer on cation and anion leaching under intensively grazed dairy pasture ” . In Long‐term nutrient needs for New Zealand's primary industries: global supply, production requirements and environmental constraints , Occasional Report No. 11 Edited by: Currie , LD and Loganathan , P . 67 – 73 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Selvarajah , N . 1996 . “ Determination of sustainable nitrogen loading rates for land treatments without adequate soil and groundwater information: dairy effluent application onto grazed pasture in the Waikato region ” . In Recent developments in the understanding of chemical movement in soil , Occasional Report No. 7 Edited by: Currie , LD and Loganathan , P . 1073 – 1077 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Sharpley , AN . 2003 . Soil mixing to decrease stratification of phosphorus in manured soils . Journal of Environmental Quality , 32 : 1375 – 1384 .
   PubMed Web of Science ®Google Scholar
• Sharpley , AN and Syers , JK . 1979 . Effect of aerial topdressing with superphosphate on the loss of phosphate from a pasture catchment . New Zealand Journal of Agricultural Research , 22 : 273 – 277 .
   Web of Science ®Google Scholar
• Sims , JT . 2005 . “ Nutrient management: integrating science, practice and policy to improve agriculture and the environment ” . In Developments in fertiliser application technologies and nutrient management , Occasional Report No. 18 Edited by: Currie , LD and Hanly , JA . 9 – 23 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Sinclair , AG , Morrison , JD , Smith , LC and Dodds , KG . 1997a . Effects and interactions of phosphorus and sulphur on a mown white clover/ryegrass sward: 3. Indices of nutrient adequacy . New Zealand Journal of Agricultural Research , 40 : 297 – 307 .
   Web of Science ®Google Scholar
• Sinclair , AG , Morrison , JD , Smith , LC and Dodds , KG . 1997b . Determination of optimum nutrient element ratios in plant tissue . Journal of Plant Nutrition , 20 (9) : 1069 – 1083 .
   Web of Science ®Google Scholar
• Singh , J , Saggar , S , Bolan , NS and Zaman , M . 2006 . “ Influence of urease and nitrification inhibitors on ammonia and nitrous oxide emissions under field conditions ” . In Implementing sustainable nutrient management strategies in agriculture , Occasional Report No. 19 Edited by: Currie , LD and Hanly , JA . 162 – 170 . Palmerston North : Fertilizer and Lime Research Centre, Massey University .
   Google Scholar
• Smeaton , D and Ledgard , SF . 2004 . Economic and N leaching estimates for feedlot and stand‐off pads. Puketapu sustainable farming fund field day booklet , 2 – 3 . Tau‐maranui : Puketapu Group .
   Google Scholar
• Smith , CM . 1987 . Sediment, phosphorus, and nitrogen in channelised surface run‐off from a New Zealand pastoral catchment . New Zealand Journal of Marine and Freshwater Research , 21 : 627 – 639 .
   Web of Science ®Google Scholar
• Smith , LC , Monaghan , RM , Ledgard , SF and Catto , WD . 2005 . The effectiveness of different nitrification inhibitor formulations in limiting nitrate accumulation in a Southland pastoral soil . New Zealand Journal of Agricultural Research , 48 : 517 – 530 .
   Web of Science ®Google Scholar
• Srinivasan , MS and McDowell , RW . 2007 . Hydrological approaches to the delineation of critical‐source areas of runoff . New Zealand Journal of Agricultural Research , 50 : 249 – 265 . (this issue)
   Web of Science ®Google Scholar
• Sukias , JPS , Tanner , CC , Davies‐Colley , RJ , Nagels , JW and Wolters , R . 2001 . Algal abundance, organic matter, and physico‐chemical characteristics of dairy farm facultative ponds: implications for treatment performance . New Zealand Journal of Agricultural Research , 44 : 279 – 296 .
   Web of Science ®Google Scholar
• Sukias , JPS , Tanner , CC and McKergow , L . 2006 . “ Dairy farm drainage nitrate attenuation wetlands and filters ” . In Implementing sustainable nutrient management strategies in agriculture , Ocassional Report No. 19 Edited by: Currie , LD and Hanly , JA . 301 – 307 . Fertiliser and Lime Research Centre, Palmerston North .
   Google Scholar
• Theobald , PW and Ball , PR . 1984 . Nitrogen lost by ammonia volatilisation, and the effectiveness of urea and ammonium sulphate fertilisers . Proceedings of the New Zealand Grassland Association , 45 : 236 – 238 .
   Google Scholar
• Thorrold , BS , Wilcock , R , Monaghan , R , Stroud , MJ and Hamil , K . 1999 . “ Catchment scale effects of land use and management on N and P losses in runoff water ” . In Best soil management practices for production , Occasional Report No. 12 Edited by: Currie , LD and Hanly , JA . 223 – 229 . Palmerston North : Fertilizer and Lime Research Centre Massey University .
   Google Scholar
• Verstraeten , V , Poesen , J , Gillijns , K and Govers , G . 2006 . The use of riparian vegetated filter strips to reduce river sediment loads: an overestimated control measure? . Hydrological Processes , 20 : 4259 – 4267 .
   Web of Science ®Google Scholar
• Watson , CJ , Poland , P and Allen , MBD . 1998 . The efficacy of repeated applications of the Urease inhibitor N‐(n‐butyl) thiophosphoric triamide for improving the efficiency of urea fertilizer utilization on temperate grassland . Grass and Forage Science , 53 : 137 – 145 .
   Web of Science ®Google Scholar
• Wheeler , DM , Ledgard , SF , deKlein , CAM , Monaghan , RM , Carey , PL , McDowell , RW and Johns , KL . 2003 . OVERSEER® nutrient budgets—moving towards on‐farm resource accounting . Proceedings of the New Zealand Grassland Association , 65 : 191 – 194 .
   Google Scholar
• Wheeler , DM , Sparling , GM and Roberts , AHC . 2004 . Trends in some soil test data over a 14‐year period in New Zealand . New Zealand Journal of Agricultural Research , 47 : 155 – 166 .
   Web of Science ®Google Scholar
• Wheeler , DM , Ledgard , SF , Monaghan , RM , McDowell , R and de Klein , C . 2006 . “ OVERSEER® nutrient budget model—what it is, what it does ” . In Implementing sustainable nutrient management strategies in agriculture , Occasional Report No 19 Edited by: Currie , LD and Hanly , JA . 231 – 236 . Palmerston North : Fertiliser and Lime Research Centre .
   Google Scholar
• Wilcock , RJ , Monaghan , RM , Quinn , JM , Campbell , AM , Duncan , MJ , McGowan , AW and Betteridge , K . 2006 . Land use impacts and water quality targets in the intensive dairying catchment of the Toenepi Stream, New Zealand . New Zealand Journal of Marine and Freshwater Research , 40 : 123 – 140 .
   Web of Science ®Google Scholar
• Wilcock , RJ , Monaghan , RM , Thorrold , BS , Meredith , AS , Betteridge , K and Duncan , MJ . 2007 . Land‐water interactions in five contrasting dairying catchments: issues and solutions . Land Use and Water Resources Research , 7 : 2.1 – 2.10 . www.luwrr.com
   Google Scholar
• Williamson , JC , Taylor , MD , Torrens , RS and Vojvodic‐Vukovic , M . 1998 . Reducing nitrogen leaching from dairy farm effluent‐irrigated pasture using dicyandiamide: a lysimeter study . Agriculture Ecosystems and Environment , 69 : 81 – 88 .
   Web of Science ®Google Scholar