Crop yield responses to surface and subsoil applications of poultry litter and inorganic fertiliser in south-eastern Australia
Corinne Celestina A E , Jon Midwood B , Stuart Sherriff C , Sam Trengove C , James Hunt D , Caixian Tang D , Peter Sale D and Ashley Franks A
+ Author Affiliations
- Author Affiliations
A Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Vic. 3086, Australia.
B Southern Farming Systems, 23 High St, Inverleigh, Vic. 3321, Australia.
C Trengove Consulting, PO Box 6, Bute, SA 5560, Australia.
D Department of Animal, Plant and Soil Sciences, AgriBio Centre for AgriBiosciences, La Trobe University, Bundoora, Vic. 3086, Australia.
E Corresponding author. Email: c.celestina@latrobe.edu.au
Crop and Pasture Science 69(3) 303-316 https://doi.org/10.1071/CP17439
Submitted: 12 September 2017 Accepted: 4 December 2017 Published: 5 March 2018
Abstract
In the high-rainfall zone of south-eastern Australia, deep incorporation of organic matter has previously been reported to increase crop yields by improving access to subsoil water and nutrients, resulting from the amelioration of subsoil constraints. However, previous experiments did not separate the yield response resulting from nutrients contained in the amendment from yield response due to amelioration of subsoil constraints. In order to separate these effects, eight field experiments were conducted on a range of soil types across the medium- and high-rainfall zones of south-eastern Australia between 2014 and 2016. Grain yield and quality responses of a range of annual crops (canola, wheat, barley and lentil) to surface and deep placement of poultry litter and inorganic fertilisers with matched nutrition were assessed. Over 15 site × year combinations, there was no consistent, significant positive interaction between amendment and incorporation treatments necessary to demonstrate that deep placement of amendment (i.e. subsoil manuring) had advantages over surface application of the same amendment. Differences in crop yield in these experiments are attributed to nutrients (particularly nitrogen) supplied by the amendment, and not to the amelioration of subsoil constraints. Future research, including analysis of subsoil physicochemical properties and plant nutrient concentrations after treatment, is necessary to confirm the role of nitrogen and other nutrients in the crop response to subsoil manuring.
Additional keywords: deep ripping, manure, nitrogen fertility, organic amendment, sodicity.
References
Adcock D, McNeill AM, McDonald GK, Armstrong RD (2007) Subsoil constraints to crop production on neutral and alkaline soils in south-eastern Australia: A review of current knowledge and management strategies. Australian Journal of Experimental Agriculture 47, 1245–1261.| Subsoil constraints to crop production on neutral and alkaline soils in south-eastern Australia: A review of current knowledge and management strategies.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXht1eqsb%2FO&md5=e95ebe692bae5fd56c0084eaf0785fb4CAS |
Adeli A, McCarty JC, Read JJ, Willers JL, Feng G, Jenkins JN (2016) Subsurface band placement of pelletized poultry litter in cotton. Agronomy Journal 108, 1356–1366.
| Subsurface band placement of pelletized poultry litter in cotton.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2sXhslaktrjI&md5=ade81b1bdea6e15fad396777ccf60d9cCAS |
Alston AM (1980) Response of wheat to deep placement of nitrogen and phosphorus fertilizers on a soil high in phosphorus in the surface layer. Australian Journal of Agricultural Research 31, 13–24.
| Response of wheat to deep placement of nitrogen and phosphorus fertilizers on a soil high in phosphorus in the surface layer.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaL3cXhsVGkt7o%3D&md5=b11322dbb41c70e7272adef1362a7aaeCAS |
Angus JF (2001) Nitrogen supply and demand in Australian agriculture. Australian Journal of Experimental Agriculture 41, 277–288.
| Nitrogen supply and demand in Australian agriculture.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3MXkt1CrsbY%3D&md5=28f7a40d09ec7d580fce6b32b2ce1867CAS |
Armstrong RD, Eagle CA, Jarwal SD (2007a) Application of composted pig bedding litter on a Vertosol and Sodosol soil. 2. Effect on soil chemical and physical fertility. Australian Journal of Experimental Agriculture 47, 1341–1350.
| Application of composted pig bedding litter on a Vertosol and Sodosol soil. 2. Effect on soil chemical and physical fertility.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXht1eqsb%2FP&md5=9a0c73276d2c5fe265a4d60a2c47d594CAS |
Armstrong RD, Eagle CA, Matassa V, Jarwal SD (2007b) Application of composted pig bedding litter on a Vertosol and Sodosol soil. 1. Effect on crop growth and soil water. Australian Journal of Experimental Agriculture 47, 689–699.
| Application of composted pig bedding litter on a Vertosol and Sodosol soil. 1. Effect on crop growth and soil water.Crossref | GoogleScholarGoogle Scholar |
Armstrong RD, Eagle CA, Flood RA (2015) Improving grain yields on a sodic clay soil in a temperate, medium-rainfall cropping environment. Crop & Pasture Science 66, 492–505.
| Improving grain yields on a sodic clay soil in a temperate, medium-rainfall cropping environment.Crossref | GoogleScholarGoogle Scholar |
Armstrong R, Sale P, Tavakkoli E, Wilhelm N, Davenport D, Dean G, Malcolm B, Midwood J, Rengasamy P, Grant C, O’Leary G, Desboilles J (2017) Can subsoil amelioration improve the productivity of grain production in medium-high rainfall environments? In ‘Doing more with less. Proceedings 18th Australian Society of Agronomy Conference’. 24–28 September 2017, Ballarat, Vic. (Eds GJ O’Leary, RD Armstrong, Hafner) (Australian Society of Agronomy)
Bakker DM, Hamilton GJ, Houlbrooke DJ, Spann C (2007) Productivity of crops grown on raised beds on duplex soils prone to waterlogging in Western Australia. Australian Journal of Experimental Agriculture 47, 1368–1376.
| Productivity of crops grown on raised beds on duplex soils prone to waterlogging in Western Australia.Crossref | GoogleScholarGoogle Scholar |
Baldock JA, Aoyama M, Oades JM, Susant O, Grant CD (1994) Structural amelioration of a South Australian red-brown earth using calcium and organic amendments. Australian Journal of Soil Research 32, 571
| Structural amelioration of a South Australian red-brown earth using calcium and organic amendments.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK2cXkvVWrtLg%3D&md5=195030608dcbb9484cf9d484f795eb68CAS |
Bennett JM, Greene RSB, Murphy BW, Hocking P, Tongway D (2014) Influence of lime and gypsum on long-term rehabilitation of a Red Sodosol, in a semi-arid environment of New South Wales. Soil Research 52, 120–128.
| Influence of lime and gypsum on long-term rehabilitation of a Red Sodosol, in a semi-arid environment of New South Wales.Crossref | GoogleScholarGoogle Scholar |
Brown SC,, Keatinge JDH, Gregory PJ, Cooper PJM (1987) Effects of fertilizer, variety and location on barley production under rainfed conditions in Northern Syria 1. Root and shoot growth. Field Crops Research 16, 53–66.
| Effects of fertilizer, variety and location on barley production under rainfed conditions in Northern Syria 1. Root and shoot growth.Crossref | GoogleScholarGoogle Scholar |
Brueck H (2008) Effects of nitrogen supply on water-use efficiency of higher plants. Journal of Plant Nutrition and Soil Science 171, 210–219.
| Effects of nitrogen supply on water-use efficiency of higher plants.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXlvVKjs70%3D&md5=516c6f15320f9c64db2370275f7edc74CAS |
Celik I, Ortas I, Kilic S (2004) Effects of compost, mycorrhiza, manure and fertilizer on some physical properties of a Chromoxerert soil. Soil & Tillage Research 78, 59–67.
| Effects of compost, mycorrhiza, manure and fertilizer on some physical properties of a Chromoxerert soil.Crossref | GoogleScholarGoogle Scholar |
Celik I, Gunal H, Budak M, Akpinar C (2010) Effects of long-term organic and mineral fertilizers on bulk density and penetration resistance in semi-arid Mediterranean soil conditions. Geoderma 160, 236–243.
| Effects of long-term organic and mineral fertilizers on bulk density and penetration resistance in semi-arid Mediterranean soil conditions.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXhsFSltr%2FO&md5=41bacbff7c2cce5fc2e369e2f3acc925CAS |
Christy B, Clough A, Riffkin P, Norton R, Midwood J, O’Leary G, Stott K, Weeks A, Potter T (2015) ‘Managing crop inputs in a high yield potential environment—HRZ of southern Australia.’ (State of Victoria Department of Economic Development, Jobs, Transport and Resources: Melbourne)
Clark GJ, Sale PWG, Tang C (2009) Organic amendments initiate the formation and stabilisation of macroaggregates in a high clay sodic soil. Australian Journal of Soil Research 47, 770–780.
| Organic amendments initiate the formation and stabilisation of macroaggregates in a high clay sodic soil.Crossref | GoogleScholarGoogle Scholar |
Dang YP, Dalal RC, Routley R, Schwenke GD, Daniells I (2006) Subsoil constraints to grain production in the cropping soils of the north-eastern region of Australia: An overview. Australian Journal of Experimental Agriculture 46, 19–35.
| Subsoil constraints to grain production in the cropping soils of the north-eastern region of Australia: An overview.Crossref | GoogleScholarGoogle Scholar |
Ellington A (1986) Effects of deep ripping, direct drilling, gypsum and lime on soils, wheat growth and yield. Soil & Tillage Research 8, 29–49.
| Effects of deep ripping, direct drilling, gypsum and lime on soils, wheat growth and yield.Crossref | GoogleScholarGoogle Scholar |
Fischer RA (2015) Definitions and determination of crop yield, yield gaps, and of rates of change. Field Crops Research 182, 9–18.
| Definitions and determination of crop yield, yield gaps, and of rates of change.Crossref | GoogleScholarGoogle Scholar |
Fraser M, Davenport D, Bartel B, Wilhelm N (2016) Overcoming constraints on sandy soils—amelioration strategies to boost crop production. GRDC Update Papers, 9 February 2016. GRDC, Canberra, ACT. Available at: https://grdc.com.au/resources-and-publications/grdc-update-papers/tab-content/grdc-update-papers/2016/02/overcoming-constraints-on-sandy-soils-amelioration-strategies-to-boost-crop-production (accessed 25 November 2017).
Gardner WK, McDonald GK (1988) Responses by wheat to lupin, soil amelioration and fertilizer treatments in a solodised solonetz soil. Australian Journal of Experimental Agriculture 28, 607
| Responses by wheat to lupin, soil amelioration and fertilizer treatments in a solodised solonetz soil.Crossref | GoogleScholarGoogle Scholar |
Gardner WK, Fawcett RG, Steed GR, Pratley JE, Whitfield DM, van Rees H (1992) Crop production on duplex soils in south-eastern Australia. Australian Journal of Experimental Agriculture 32, 915
| Crop production on duplex soils in south-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Gill JS, Sale PWG, Tang C (2008) Amelioration of dense sodic subsoil using organic amendments increases wheat yield more than using gypsum in a high rainfall zone of southern Australia. Field Crops Research 107, 265–275.
| Amelioration of dense sodic subsoil using organic amendments increases wheat yield more than using gypsum in a high rainfall zone of southern Australia.Crossref | GoogleScholarGoogle Scholar |
Gill JS, Sale PWG, Peries R, Tang C (2009) Changes in soil physical properties and crop root growth in dense sodic subsoil following incorporation of organic amendments. Field Crops Research 114, 137–146.
| Changes in soil physical properties and crop root growth in dense sodic subsoil following incorporation of organic amendments.Crossref | GoogleScholarGoogle Scholar |
Gill JS, Clark GJ, Sale PWG, Peries R, Tang C (2012) Deep placement of organic amendments in dense sodic subsoil increases summer fallow efficiency and the use of deep soil water by crops. Plant and Soil 359, 57–69.
| Deep placement of organic amendments in dense sodic subsoil increases summer fallow efficiency and the use of deep soil water by crops.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XhtlGmsr7N&md5=69779cf15b47f098acd086d6754f3c4aCAS |
Graham RD, Ascher JS (1993) Nutritional limitations of subsoils. In ‘Plant nutrition—from genetic engineering to field practice’. (Ed. J Barrow) pp. 739–742. (Kluwer Academic Publishers: Dordrecht, The Netherlands)
Hamza MA, Anderson WK (2002) Improving soil physical fertility and crop yield on a clay soil in Western Australia. Australian Journal of Agricultural Research 53, 615–620.
| Improving soil physical fertility and crop yield on a clay soil in Western Australia.Crossref | GoogleScholarGoogle Scholar |
Hazelton P, Murphy BW (2007) ‘Interpreting soil test results: What do all the numbers mean?’ (CSIRO Publishing: Melbourne)
Holford ICR, Doyle AD, Leckie CC (1992) Nitrogen response characteristics of wheat protein in relation to yield responses and their interactions with phosphorus. Australian Journal of Agricultural Research 43, 969–986.
| Nitrogen response characteristics of wheat protein in relation to yield responses and their interactions with phosphorus.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK38XkvV2ntLs%3D&md5=46848045496e430410b79c5f85bfa1a3CAS |
Holland JE, White RE, Edis R (2007) The relation between soil structure and solute transport under raised bed cropping and conventional cultivation in south-western Victoria. Australian Journal of Soil Research 45, 577–585.
| The relation between soil structure and solute transport under raised bed cropping and conventional cultivation in south-western Victoria.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2sXhsVamtbjE&md5=065ac658bee3a30e4706bb73a71c5fbcCAS |
Hunt JR, Kirkegaard JA (2013) A guide to consistent and meaningful benchmarking of yield and reporting of water-use efficiency. CSIRO, Canberra, ACT. Available at: https://publications.csiro.au/rpr/download?pid=csiro:EP156113&dsid=DS2
Isbell RF (2002) ‘The Australian Soil Classification.’ Revised edn. (CSIRO Publishing: Melbourne).
Ives SWA, Cotching WEB, Sparrow LA, Lisson SD, Doyle RB (2011) Plant growth and soil responses to soil applied organic materials in Tasmania, Australia. Soil Research 49, 572–581.
| Plant growth and soil responses to soil applied organic materials in Tasmania, Australia.Crossref | GoogleScholarGoogle Scholar |
Jayawardane NS, Blackwell J (1985) The effects of gypsum-enriched slots on moisture movement and aeration in an irrigated swelling clay. Australian Journal of Soil Research 23, 481–492.
| The effects of gypsum-enriched slots on moisture movement and aeration in an irrigated swelling clay.Crossref | GoogleScholarGoogle Scholar |
Jayawardane NS, Chan KY (1994) The management of soil physical properties limiting crop production in Australian sodic soils – a review. Australian Journal of Soil Research 32, 13
| The management of soil physical properties limiting crop production in Australian sodic soils – a review.Crossref | GoogleScholarGoogle Scholar |
Kaufmann M, Tobias S, Schulin R (2010) Comparison of critical limits for crop plant growth based on different indicators for the state of soil compaction. Journal of Plant Nutrition and Soil Science 173, 573–583.
| Comparison of critical limits for crop plant growth based on different indicators for the state of soil compaction.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXhtVaqtLbP&md5=ba544da0476fbd06210085893a9a83cfCAS |
Kirkegaard JA, Lilley JM, Howe GN, Graham JM (2007) Impact of subsoil water use on wheat yield. Australian Journal of Agricultural Research 58, 303–315.
| Impact of subsoil water use on wheat yield.Crossref | GoogleScholarGoogle Scholar |
Kirkegaard JA, Angus JF, Swan T, Peoples MB, Moroni S (2008) Ripping yarns : 25 years of variable responses to ripping clay soils in south-eastern Australia Paddock survey and compilation of data from ripping experiments. In ‘Global issues, paddock action. Proceedings 14th Australian Agronomy Conference’. 21–25 September 2008, Adelaide, S. Aust. (Ed. M Unkovich) (Australian Society of Agronomy)
Larney FJ, Henry Janzen H, Olson AF (2011) Residual effects of one-time manure, crop residue and fertilizer amendments on a desurfaced soil. Canadian Journal of Soil Science 91, 1029–1043.
| Residual effects of one-time manure, crop residue and fertilizer amendments on a desurfaced soil.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC38XislWiurg%3D&md5=93010dc1889f2a75e632fd782b4c6095CAS |
Li G, Burns H (2017) Early measure of ameliorants to neutralise subsoil acidity. GRDC GroundCover Magazine Issue 129, July–August 2017. GRDC, Canberra, ACT. Available at: https://grdc.com.au/resources-and-publications/groundcover/groundcovertm-129-july-august-2017/early-measure-of-ameliorants-to-neutralise-subsoil-acidity (accessed 25 November 2017).
Lisson SN, Kirkegaard JA, Robertson MJ, Zwart A (2007) What is limiting canola yield in southern New South Wales? A diagnosis of causal factors. Australian Journal of Experimental Agriculture 47, 1435–1445.
| What is limiting canola yield in southern New South Wales? A diagnosis of causal factors.Crossref | GoogleScholarGoogle Scholar |
Liu J, Kleinman PJA, Beegle DB, Dell CJ, Veith TL, Saporito LS, Han K, Pote DH, Bryant RB (2016) Subsurface application enhances benefits of manure redistribution. Agricultural & Environmental Letters 1, 150003
Ma Q, Rengel Z, Rose T (2009) The effectiveness of deep placement of fertilisers is determined by crop species and edaphic conditions in Mediterranean-type environments: A review. Australian Journal of Soil Research 47, 19–32.
| The effectiveness of deep placement of fertilisers is determined by crop species and edaphic conditions in Mediterranean-type environments: A review.Crossref | GoogleScholarGoogle Scholar |
MacEwan RJ, Crawford DM, Newton PJ, Clune TS (2010) High clay contents, dense soils, and spatial variability are the principal subsoil constraints to cropping the higher rainfall land in south-eastern Australia. Australian Journal of Soil Research 48, 150
| High clay contents, dense soils, and spatial variability are the principal subsoil constraints to cropping the higher rainfall land in south-eastern Australia.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXktVShu7c%3D&md5=3ede30dcb6c44688fae00e72367f0e02CAS |
Maguire RO, Kleinman PJA, Dell CJ, Beegle DB, Brandt RC, McGrath JM, Ketterings QM (2011) Manure application technology in reduced tillage and forage systems: a review. Journal of Environmental Quality 40, 292
| Manure application technology in reduced tillage and forage systems: a review.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXjsVWqt7k%3D&md5=f8d6a25cb95f764955ee14dc056531a7CAS |
Mandal M, Chandran RS, Sencindiver JC (2013) Amending subsoil with composted poultry litter-I: Effects on soil physical and chemical properties. Agronomy 3, 657–669.
| Amending subsoil with composted poultry litter-I: Effects on soil physical and chemical properties.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2cXjtVahsbk%3D&md5=b620b34b7fbed79069b3873e38ea63e5CAS |
McBeath TM, Grant CD, Murray RS, Chittleborough DJ (2010) Effects of subsoil amendments on soil physical properties, crop response, and soil water quality in a dry year. Australian Journal of Soil Research 48, 140–149.
| Effects of subsoil amendments on soil physical properties, crop response, and soil water quality in a dry year.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3cXktVShu7s%3D&md5=148342994840fe2d199475ff0217c7f6CAS |
Mehanni AH (1974) Short term effect of some methods for improving soil structure in red-brown earth soils of the northern irrigation areas, Victoria. Australian Journal of Experimental Agriculture 14, 689
| Short term effect of some methods for improving soil structure in red-brown earth soils of the northern irrigation areas, Victoria.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaE2MXosFWhtg%3D%3D&md5=b5e0cfa0929856df01a6ff6d4a8f2eeaCAS |
Nielsen DC (2001) Production functions for chickpea, field pea, and lentil in the central great plains. Agronomy Journal 93, 563–569.
| Production functions for chickpea, field pea, and lentil in the central great plains.Crossref | GoogleScholarGoogle Scholar |
Norton RM, Wachsmann NG (2006) Nitrogen use and crop type affect the water use of annual crops in south-eastern Australia. Australian Journal of Agricultural Research 57, 257–267.
| Nitrogen use and crop type affect the water use of annual crops in south-eastern Australia.Crossref | GoogleScholarGoogle Scholar |
Nuttall JG, Armstrong RD, Connor DJ, Matassa VJ (2003) Interrelationships between edaphic factors potentially limiting cereal growth on alkaline soils in north-western Victoria. Australian Journal of Soil Research 41, 277–292.
| Interrelationships between edaphic factors potentially limiting cereal growth on alkaline soils in north-western Victoria.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD3sXktFKisrk%3D&md5=59096db5f3819adcedf7e3b9afdca57bCAS |
Olsson KA, Dellow KE, Hirth JR, Kelly KB, Greenwood KL, Blaikie SJ (2002) Soil properties, root responses and production of irrigated pasture on a red-brown earth after subsoil modification. Australian Journal of Experimental Agriculture 42, 453–463.
| Soil properties, root responses and production of irrigated pasture on a red-brown earth after subsoil modification.Crossref | GoogleScholarGoogle Scholar |
Passioura JB (2002) Environmental biology and crop improvement. Functional Plant Biology 29, 537–546.
| Environmental biology and crop improvement.Crossref | GoogleScholarGoogle Scholar |
Passioura JB, Angus JF (2010) ‘Improving productivity of crops in water-limited environments.’ (Elsevier: Amsterdam).
Peoples MB, Brockwell J, Herridge DF, Rochester IJ, Alves BJR, Urquiaga S, Boddey RM, Dakora FD, Bhattarai S, Maskey SL, Sampet C, Rerkasem B, Khan DF, Hauggaard-Nielsen H, Jensen ES (2009) The contributions of nitrogen-fixing crop legumes to the productivity of agricultural systems. Symbiosis 48, 1–17.
| The contributions of nitrogen-fixing crop legumes to the productivity of agricultural systems.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1MXpsFenur4%3D&md5=13f918c832a274044dc3d0030bb4010bCAS |
Pote DH, Way TR, Kleinman PJA, Moore PA, Meisinger JJ, Sistani KR, Saporito LS, Allen AL, Feyereisen GW (2011) Subsurface application of poultry litter in pasture and no-till soils. Journal of Environmental Quality 40, 402
| Subsurface application of poultry litter in pasture and no-till soils.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXjsVWqtLc%3D&md5=bbda263828f291322fa8bec08e0c2ac4CAS |
Powell JM, Jokela WE, Misselbrook TH (2011) Dairy slurry application method impacts ammonia emission and nitrate leaching in no-till corn silage. Journal of Environmental Quality 40, 383
| Dairy slurry application method impacts ammonia emission and nitrate leaching in no-till corn silage.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC3MXjsVWqtLk%3D&md5=3211d0f56c6498d1afc8ce63c89380f0CAS |
Rengasamy P (2002) Transient salinity and subsoil constraints to dryland farming in Australian sodic soils: An overview. Australian Journal of Experimental Agriculture 42, 351–361.
| Transient salinity and subsoil constraints to dryland farming in Australian sodic soils: An overview.Crossref | GoogleScholarGoogle Scholar |
Rengasamy P, Olsson KA (1991) Sodicity and soil structure. Australian Journal of Soil Research 29, 935–952.
| Sodicity and soil structure.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DyaK38XitlCmsr4%3D&md5=9de076d8ae2bc6d807643e3fec2383e8CAS |
Robertson MJ, Kirkegaard JA (2005) Water-use efficiency of dryland canola in an equi-seasonal rainfall environment. Australian Journal of Agricultural Research 56, 1373–1386.
| Water-use efficiency of dryland canola in an equi-seasonal rainfall environment.Crossref | GoogleScholarGoogle Scholar |
Robertson M, Kirkegaard JA, Peake A, Creelman Z, Bell L, Lilley J, Midwood J, Zhang H, Kleven S, Duff C, Lawes R, Riffkin P (2016) Trends in grain production and yield gaps in the high rainfall zone of southern Australia. Crop & Pasture Science 67, 921–937.
| Trends in grain production and yield gaps in the high rainfall zone of southern Australia.Crossref | GoogleScholarGoogle Scholar |
Rothamsted Research (2006) ‘Guide to the classical and other long-term experiments, datasets and sample archive.’ (Lawes Agriculture Trust: Harpenden, UK)
Sadras VO (2002) Interaction between rainfall and nitrogen fertilisation of wheat in environments prone to terminal drought: Economic and environmental risk analysis. Field Crops Research 77, 201–215.
| Interaction between rainfall and nitrogen fertilisation of wheat in environments prone to terminal drought: Economic and environmental risk analysis.Crossref | GoogleScholarGoogle Scholar |
Sadras VO, Angus JF (2006) Benchmarking water-use efficiency of rainfed wheat in dry environments. Australian Journal of Agricultural Research 57, 847–856.
| Benchmarking water-use efficiency of rainfed wheat in dry environments.Crossref | GoogleScholarGoogle Scholar |
Sadras VO, Hayman PT, Rodriguez D, Monjardino M, Bielich M, Unkovich M, Mudge B, Wang E (2016) Interactions between water and nitrogen in Australian cropping systems: physiological, agronomic, economic, breeding and modelling perspectives. Crop & Pasture Science 67, 1019–1053.
| Interactions between water and nitrogen in Australian cropping systems: physiological, agronomic, economic, breeding and modelling perspectives.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC28Xhs1Ggtb3F&md5=8db5769f2717da62f822df19addda4edCAS |
Sale PWG (2014) Validating subsoil manuring in the High Rainfall Zone. Final Report for GRDC Project ULA000008. La Trobe University, Victoria. Available at: http://finalreports.grdc.com.au/ULA00008
Schneider F, Don A, Hennings I, Scmittman O, Seidel SJ (2017) The effect of deep tillage on crop yields—what do we really know? Soil and Tillage Research 174, 193–204.
Singh DK, Sale PWG, Routley RR (2005) Increasing phosphorus supply in subsurface soil in northern Australia: Rationale for deep placement and the effects with various crops. Plant and Soil 269, 35–44.
| Increasing phosphorus supply in subsurface soil in northern Australia: Rationale for deep placement and the effects with various crops.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2MXks1Oisrk%3D&md5=d55d92005106cee703dc9996a7fd4693CAS |
Sistani KR, Simmons JR, Warren JG, Higgins S (2017) Nitrogen source and application method impact on corn yield and nutrient uptake. Journal of Plant Nutrition 40, 878–889.
| Nitrogen source and application method impact on corn yield and nutrient uptake.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BC2sXls1yntbs%3D&md5=656f8d59dfb4482a46859d573ebdbdf1CAS |
Smith KA, Jackson DR, Misselbrook TH, Pain BF, Johnson RA (2000) Reduction of ammonia emission by slurry application techniques. Journal of Agricultural Engineering Research 77, 277–287.
| Reduction of ammonia emission by slurry application techniques.Crossref | GoogleScholarGoogle Scholar |
Turner NC (2004) Agronomic options for improving rainfall-use efficiency of crops in dryland farming systems. Journal of Experimental Botany 55, 2413–2425.
| Agronomic options for improving rainfall-use efficiency of crops in dryland farming systems.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD2cXovVOju7k%3D&md5=2974ca0f617b5ebf76cbc28c736642f0CAS |
van Herwaarden AF, Farquhar GD, Angus JF, Richards RA, Howe GN (1998) ‘Haying-off’, the negative grain yield response of dryland wheat to nitrogen fertiliser I. Biomass, grain yield, and water use. Australian Journal of Agricultural Research 49, 317–327.
Vance WH, Tisdall JM, McKenzie BM (1998) Residual effects of surface applications of organic matter and calcium salts on the subsoil of a red-brown earth. Australian Journal of Experimental Agriculture 38, 595–600.
| Residual effects of surface applications of organic matter and calcium salts on the subsoil of a red-brown earth.Crossref | GoogleScholarGoogle Scholar |
Warren JG, Sistani KR, Way TR, Mays Da, Pote DH (2008) A new method of poultry litter application to perennial pasture: Subsurface banding. Soil Science Society of America Journal 72, 1831–1837.
| A new method of poultry litter application to perennial pasture: Subsurface banding.Crossref | GoogleScholarGoogle Scholar | 1:CAS:528:DC%2BD1cXhsVCjs7nI&md5=c06a871d5cadc5e410d506c09dd969a7CAS |
White RG, Kirkegaard JA (2010) The distribution and abundance of wheat roots in a dense, structured subsoil – Implications for water uptake. Plant, Cell & Environment 33, 133–148.
| The distribution and abundance of wheat roots in a dense, structured subsoil – Implications for water uptake.Crossref | GoogleScholarGoogle Scholar |
Zhang H, Turner NC, Poole ML, Simpson N (2006) Crop production in the high rainfall zones of southern Australia—potential, constraints and opportunities. Australian Journal of Experimental Agriculture 46, 1035–1049.
| Crop production in the high rainfall zones of southern Australia—potential, constraints and opportunities.Crossref | GoogleScholarGoogle Scholar |
