Researcher(s) |
Fabio Arsego |
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Contact email | Fabio.Arsego@sa.gov.au |
Contact phone | 0401653389 |
Year(s) | 2019 |
Contributor | SARDI Minnipa Agricultural Centre |
Trial location(s) |
Condada, SA
Cungena, SA Elliston, SA MAC, SA Port Kenny, SA Streaky Bay, SA |
This research aims to determine in which situations extra fertilisation can bring benefits to growers in 14 different Eyre Peninsula (EP) environments.
Every season, growers need to make choices over limited resources in order to optimise their profitability. Soil type and water represent two of the key limiting resources which define the grain yield potential of a paddock. The unpredictability of growing season rainfall patterns restricts in-season fertiliser applications for EP growers, due to the associated high economic risks. As a risk management strategy, growers often apply lower rates of nutrients than required to achieve the water limiting yield potential (Sadras and Roget 2004, Monjardino et al. 2013). Therefore, less than optimum nutrient rates are applied in many instances, and maximum grain yield gains are not reached on occasions where opportunities have existed. Understanding soil water and nutrient dynamics can be useful to determine when in-season extra fertiliser applications are worth the investment in EP dryland farming systems.
This study used a subset of the Eyre Peninsula Agricultural Research Foundation (EPARF) soil moisture probe network locations to benchmark the water limited yield potential and determine the achievable grain yield of cereals crops across major soil types of EP.
Lead research organisation | N/A |
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Host research organisation | N/A |
Trial funding source | SARDI DAS00165 |
Trial funding source | GRDC DAS00165 |
Related program | N/A |
Acknowledgments |
The present project is part of the bilateral investment initiative between SARDI and GRDC (DAS00165) and incorporates findings from scoping study DAS00157. Special thanks to Katrina Brands and Steve Jeffs for their collaboration with field activities. Thank you to Amanda Cook and Nigel Wilhelm for suggestions and feedback during the season. |
Other trial partners | Not specified |
Crop type | Cereal (Grain): Wheat |
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Treatment type(s) |
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Trial type | Experimental |
Trial design | Replicated |
Sow rate or Target density | Not specified |
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Sowing machinery | Not specified |
Sow date | Not specified |
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Plot blocking | Not specified |
Plot randomisation | Not specified |
Fertiliser | Not specified |
Sow rate or Target density | Not specified |
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Sowing machinery | Not specified |
Sow date | Not specified |
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Plot blocking | Not specified |
Plot randomisation | Not specified |
Fertiliser | Not specified |
Sow rate or Target density | 65kg/ha |
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Sowing machinery |
Small plot seeder |
Sow date | 22 May 2019 22nd May 2019 |
Harvest date | 23 October 2019 23rd October 2019 |
Plot size | Not specified |
Plot replication | Not specified |
Plot blocking | Random |
Plot randomisation | Random blocks |
Fertiliser |
Dap Granuloc Zincstar Urea UAN MAP |
Sow rate or Target density | Not specified |
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Sowing machinery | Not specified |
Sow date | Not specified |
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Plot blocking | Not specified |
Plot randomisation | Not specified |
Fertiliser | Not specified |
Sow rate or Target density | Not specified |
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Sowing machinery | Not specified |
Sow date | Not specified |
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Plot blocking | Not specified |
Plot randomisation | Not specified |
Fertiliser | Not specified |
Sow rate or Target density | Not specified |
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Sowing machinery | Not specified |
Sow date | Not specified |
Harvest date | Not specified |
Plot size | Not specified |
Plot replication | Not specified |
Plot blocking | Not specified |
Plot randomisation | Not specified |
Fertiliser | Not specified |
SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.