Roy Latta

Affiliations

(1) Dodgshun Medlin (2) DPI Vic (1) ex (SARDI (2) LRCP (1) Mallee Focus (1) Mallee Research Station (2) SARDI (38)
Options
Primary
Crop Type
Trial site legend

48 trial projects found Matching active filters and within map area

7 results have export data available 5 trials are CC BY 4.0
Search result tools

Aims:

To examine the effect of gypsum on soil pH and soil C and whether changes in soil pH could alter productivity of the following cereal crops.

Crop type: Wheat 1 trial Fertiliser Rate Soil amelioration Type
Minnipa Agricultural Centre, SA Calcareous red sandy loam
Research organisatons
Funding source

Aims:

To examine the effect of gypsum on soil pH and soil C and whether changes in soil pH could alter productivity of the following cereal crops.

Crop type: Barley 1 trial Fungicide Rate Soil amelioration Type
Minnipa Agricultural Centre, SA Red loam
Research organisatons
Funding source

Aims:

A long-term study was established at the Minnipa Agricultural Centre from 2008 to 2014 (EPFS Summaries 2008 to 2013) to assess the impact of grazing on crop and pasture production and soil health and also to evaluate this from a systems perspective.

The seven year demonstration with a wheat, wheat, pasture (volunteer and sown annual me… read more

Crop type: Wheat 1 trial Fertiliser Rate Grazing Regime Sowing Rate
Minnipa Agricultural Centre, SA Red sandy loam
Research organisatons
Funding source

Aims:

Agricultural soils are the main source of emission of the greenhouse gas (GHG) nitrous oxide (N2O) to the atmosphere. N2O is a potent GHG which lasts in the atmosphere for 114 years and has a global warming potential of approximately 300 times greater than that of carbon dioxide over a 100 year timescale. Agriculture accounts for 16% of Australi… read more

Crop type: Wheat 1 trial Crop Type Fertiliser Rate
Wanilla, SA Duplex sand over loam
Research organisatons
Funding source

Aims:

To measure and quantify N2O emissions from wheat grown in rotation with canola, pulses and legume pastures at two sites in low and medium/high rainfall farming systems of the Eyre Peninsula, while assessing best management practices that local farmers can adopt to reduce the risk of N2O losses and ultimately improve the paddock’s crop producti… read more

Crop type: Wheat 2 trials Crop Type Fertiliser Rate Fertiliser Timing
Minnipa Agricultural Centre, SA Wanilla, SA Calcareous red sandy loam
Research organisatons
Funding source

Aims:

To test whether soil fertility and health could be improved under a higher input system (e.g. higher fertiliser and seeding rates, establishment of improved pasture) compared to a lower input and more traditional system (district practice seed and fertiliser inputs, volunteer pasture).

The six year (2008-2013) rotation of: wheat, wheat… read more

Crop type: Wheat 1 trial Fertiliser Rate Grazing Regime Sowing Rate
Minnipa Agricultural Centre, SA Red sandy loam
Research organisatons
Funding source

Aims:

To measure and quantify N2O emissions from wheat grown in rotation with canola, pulses and legume pastures at two sites in low and medium/high rainfall farming systems of the Eyre Peninsula, while assessing best management practices that local farmers can adopt to reduce the risk of N2O losses and ultimately improve the paddock’s crop producti… read more

Crop type: Clover,Medic,Field peas,Lupins,Canola 10 trials Crop Type Fertiliser Rate Fertiliser Timing
Minnipa Agricultural Centre, SA Wanilla, SA Calcareous red sandy loam
Research organisatons
Funding source

Aims:

To investigate whether the VRT approach will markedly shift yields and profitability from the levels achieved using blanket inputs across the whole paddock in the Minnipa region.

Crop type: Medic 1 trial Fertiliser Rate Sowing Rate
Minnipa Agricultural Centre, SA Sandy loam over sandy clay loam
Source Data Unavailable
Research organisatons
Funding source

Aims:

  • To investigate the potential to incorporate a mixture of perennial species into farming systems in low-rainfall areas across southern Australia.

Crop type: Perennial shrubs 2 trials Crop Type Grazing Regime
Minnipa, SA Piednippie, SA
Source Data Unavailable
Research organisaton
Funding sources

Aims:

  • To identify alternative perennial legumes to lucerne suitable for incorporation within cropping systems, there are at least 3 options potentially adapted to areas within the Eyre Peninsula environment.

Edillilie, SA Greenpatch, SA Minnipa, SA Rudall, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To reinvigorate the livestock component of the EP farming system.

Crop type: No crop specified 1 trial No treatment
Minnipa, SA
Source Data Unavailable
Research organisaton

Aims:

To report on a series of articles are from trials undertaken in 2011 on the three focus sites or funded via the
EPFS 3 project.

Crop type: No crop specified 3 trials Fertiliser Rate
Minnipa, SA Mudamuckla, SA Wharminda, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

  • To compare the impact of four different management strategies on production, profitability and sustainability at the Minnipa Agricultural Centre.

Crop type: Barley 1 trial Crop Type Grazing
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding sources

Aims:

To investiage management of risk through tailoring inputs to the different production zones potential
by using variable rate technology.

Crop type: Wheat 1 trial Fertiliser Rate Sowing Rate
Mudamuckla, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To investiage management of risk through tailoring inputs to the different production zones
potential by using variable rate technology.

Crop type: Medic 1 trial Crop Type
Wharminda, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate variable rate technology using low, standard and high seed and fertiliser inputs on 3 soils zoned as of poor, medium and good production potential from a pre-2008 yield monitor, EM38 and elevation maps.

Crop type: Wheat 1 trial No treatment Precision agriculture
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

  • To test whether soil fertility and health could be improved under a higher input system compared to a lower input and more traditional system.

Crop type: Wheat 1 trial Crop Type Crop Rotation Grazing Regime
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

To study the use of VRT through zoning the paddock based on pre-2008 yield monitor maps, and incorporating EM38 and elevation maps.

Crop type: Barley 1 trial Fertiliser Sowing Rate
Minnipa Agricultural Centre, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To recommend options to improve;
• soil nutrients and groundcover, and 
• reduce disease levels and chemical use.

Crop type: Canola,Oats,Wheat,Medic,Field peas,Vetch 6 trials Crop Type Crop Rotation
Minnipa Agricultural Centre, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding sources

Aims:

To test whether soil fertility and health could be improved under a higher input system compared with a lower input and more traditional system.

Crop type: Wheat,Medic 2 trials Crop Rotation Grazing Regime
Minnipa, VIC
Source Data Unavailable
Research organisaton
Funding sources

Aims:

To investigate wheat varieties suitable to adapt to seasonal variability. 

Crop type: Wheat 1 trial Variety Variety Type
Minnipa Agricultural Centre, SA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To test whether soil health and fertility can be improved under a higher carbon input system with or without grazing.

Crop type: Medic 1 trial Crop Type Crop Rotation Grazing Regime
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

To include the Minnipa flock within the program to help:

  • educate ram buyers of the merits of ASBVs so they seek out, and buy rams from, breeders that are members of Sheep Genetics “LAMPLAN” or “MERINOSELECT”.
  • encourage more breeders to become members of Sheep Genetics “LAMPLAN” or “MERINOSELECT” and t… read more
Minnipa, SA
Source Data Unavailable
Research organisaton

Aims:

To identify better perennial species than what is already available in low rainfall areas.

Minnipa, SA Piednippie, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To identify alternative perennial legumes to lucerne suitable for incorporation within cropping systems, there are possibly at least 3 options adapted to areas within the Eyre Peninsula environment.

Crop type: Lucerne,Sulla,Cullen species 12 trials Crop Crop Type
Edillilie, SA Greenpatch, SA Minnipa, SA Rudall, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To provide data to assist in decision making when planning to use a field crop as a potential resource for grazing, hay and/or grain based on seasonal conditions, while in some cases utilising the benefits of a break crop within the cropping rotation.

Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

To assess the P response from current and residual fertiliser applications.

Crop type: Wheat 1 trial Fertiliser Rate
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

The Farming Systems Competition was commenced in 2000 to compare the impact of four different management strategies on production, profitability and sustainability at the Minnipa Agricultural Centre.

Crop type: Wheat,Canola,Kaspa peas,Barley 4 trials Crop Type Crop Rotation
Minnipa, SA
Source Data Unavailable
Research organisaton

Aims:

To manage risk through tailoring inputs to the different production zones potential by using variable rate technology.

Crop type: Wheat 1 trial Fertiliser Rate
Mudamuckla, SA Grey calcareous sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

At Wharminda the focus is on managing risk through variable rate technology (VRT) using different inputs over variable soil
types.

Crop type: Wheat 1 trial Fertiliser Rate
Wharminda, SA Deep non-wetting sand
Source Data Unavailable
Research organisaton
Funding source

Aims:

To further evaluate variable rate sowing as a tool to improve profitability in low rainfall upper EP farming systems, this broad acre trial
began in 2008 and has continued through to 2010.

Crop type: Wheat 1 trial Fertiliser Rate
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

To assess the performance of annual medics in a pasture – wheat rotation over the 2009 and 2010 seasons.

Crop type: Medic,Wheat 2 trials Crop Type
Minnipa, SA
Source Data Unavailable
Research organisaton

Aims:

To investigate selection of canola lines for low rainfall environments in south eastern Australia

Crop type: Canola 1 trial Variety Variety Type
Minnipa, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To test whether knowledge of soil potential, soil variation and in-season predictions of grain yield with Yield Prophet could be useful to improving management.

Crop type: Wheat 1 trial No treatment Precision agriculture
Mudamuckla, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To assess the P response from current fertiliser applications at MAC.

Crop type: Wheat 1 trial Fertiliser
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

To manage risk through variable rate technology using different inputs over variable soil types and testing the use of Yield Prophet to match plant available water and nutrition with modelling of climatic conditions, knowing that we can have unpredictable finishes to seasons.

Crop type: Wheat 1 trial Fertiliser Rate Sowing Rate
Mudamuckla, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To manage risk through variable rate technology using different inputs over variable soil types and testing the use of Yield Prophet to match plant available water and nutrition with modelling of climatic conditions, knowing that we can have unpredictable finishes to seasons.

Crop type: Wheat 1 trial Fertiliser Rate Sowing Rate
Wharminda, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To manage risk through variable rate technology using different inputs over variable soil types and testing the use of Yield Prophet to match plant available water and nutrition with modelling of climatic conditions, knowing that we can have unpredictable finishes to seasons.

Crop type: Wheat 1 trial Fertiliser Rate Sowing Rate
Minnipa, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To provide early feed for stock in autumn, a time of year when pastures haven’t established properly, and get ewes and lambs out of the confinement feedlot and onto good quality feed as soon as possible.

Crop type: Barley 1 trial Crop Type Fertiliser Rate Grazing
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

To see how the commonly grown varieties with a range of maturities respond to seasonal conditions, soil type and sowing time, i.e. to evaluate how they can best fit into the farming system.

Crop type: Wheat 1 trial Variety Variety Type
Minnipa, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To test whether general soil health and fertility can be increased under a higher carbon input system with well managed grazing.

Crop type: Wheat 1 trial Crop Rotation Fertiliser Rate Grazing
Minnipa, SA Red sandy loam
Source Data Unavailable
Research organisaton
Funding source

Aims:

To provide data to assist in decision making of using a cereal for grazing, hay and/or grain based on seasonal conditions, while knowing the relative multipurpose performance of the cereal options.

Crop type: Wheat 1 trial Grazing
Minnipa, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To compare current varieties to ones which are not commonly grown in the district, and to compare varieties in soil types and rainfall regions where National Wheat Variety trials are not conducted.

Crop type: Wheat 3 trials Variety Variety Type
Elliston, SA Franklin Harbour, SA Mt Cooper, SA
Source Data Unavailable
Research organisaton

Aims:

To measure comparative wheat yields in response to varying P applications on 2 soil types.

Crop type: Wheat 1 trial Fertiliser Fertiliser Rate
Minnipa, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To assess the role of annual medics as a break crop in a wheat-sheep mixed farming system, by measuring the biomass produced over the growing season followed by the retention of the pasture residue over the summer autumn period, then subsequently assessing the impact of the pasture in the following cereal phase in terms of yield and grain qualit… read more

Crop type: Medic 1 trial Grazing Rate
Minnipa, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To compare various crops and crop mixtures as alternatives to fallow in the first year of a 2 year cropping rotation.

Cowangie, VIC Walpeup, VIC
Source Data Unavailable
Research organisaton

Aims:

To investigate whether higher fertiliser rates profitably produced greater amounts of better quality pasture than when district average fertiliser rates are used.

Crop type: Mixed species 1 trial Crop Type Grazing
Walpeup, VIC
Source Data Unavailable
Research organisaton

Aims:

To discuss how to achieve a dense medic dominant pasture.

Crop type: Medic 1 trial Grazing Herbicide Sowing Rate Sowing Method
Walpeup, VIC
Source Data Unavailable
Research organisaton