The oat variety descriptions in this Oat variety sowing guide 2010

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The oat variety descriptions in this Oat variety sowing guide 2010 Powered By Docstoc
					                                                                                                                              Sowing Guide 2010




Oat variety sowing guide 2010
By Pamela Zwer, Principal Oat Breeder, Sue       on varietal performance, soil                        accredited agronomist.
Hoppo, Scientific Officer, Peter McCormack,      testing is recommended to assess                       Varieties contained in Table
Manager Oat Improvement, Daryl Schaefer,         if either of these nematodes                         1 provide options for different
Peter Wheeler, Shoneel Nair and Marcus           will be a significant problem.                       end uses. Table 5 should
Crawford, Agricultural Officers, Oat Breeding,   The PreDicta™ B Root Disease                         then be used in conjunction
and Michelle Williams, Senior Technical          Testing Service (RDTS) provides                      with this table to determine if
Officer, Oat Quality Laboratory, SARDI           a diagnostic service to assess the                   the variety of choice has both
                                                 levels of both nematodes prior to                    resistance and tolerance to CCN


T
         he oat variety descriptions in this     sowing. This is available through   Sue Hoppo        if it is a problem or resistance
         publication serve as a guide to         your local accredited agronomist or          and tolerance to SN if it is a problem.
         select oat varieties for specific end   contact Alan Mackay (SARDI Plant and         Varieties grown where CCN or SN
uses with disease resistance, agronomic          Soil Health ph. 8303 9375) for your local    is present should be resistant to the
traits, and yield potential suited to diverse
south eastern Australian farming systems.        Table 1. Oat varieties listed according to annual rainfall. Use Tables 2, 3, 4, 5, 6 and 7 to further refine your
                                                 choice within each category.
New for 2010
                                                                                                                  Annual Rainfall (mm)
• Mulgara A and Tungoo A released by
SARDI; commercialised by AEXCO Pty                          End use                          <375                         375-500                         >500
Ltd                                                                                          Mitika                         Mitika                       Mitika
• YallaraA released by SARDI;                                                                Yallara                        Yallara                      Yallara
commercialised by Viterra (formerly ABB                  Milling grain
                                                                                              Euro                           Euro                         Euro
Seeds)
• Ratings for stem nematode resistance                                                     Mortlock                        Possum                       Possum
added to disease resistance table                                                                                         Mortlock                      Mortlock
                                                                                             Mitika                         Mitika                       Mitika
How to use the oat variety
                                                                                             Yallara                        Yallara                      Yallara
sowing guide
  Varieties adapted to low, medium, and                                                     Mulgara                        Mulgara                      Mulgara
                                                          Feed grain-
high rainfall regions and categorised by                 sheep, cattle                      Potoroo                         Quoll                         Quoll
grain and hay end-use are shown in Table                                                    Echidna                        Potoroo                      Potoroo
1. Select the group of varieties suited to
                                                                                            Wallaroo                       Echidna                      Echidna
your rainfall region and end use. Consult
Tables 2 to 7 to refine the list to one or                                                                                Wintaroo                      Wintaroo
two varieties. Consult Tables 2 and 3 for         Feed grain - pigs, poultry                    -                          Numbat                       Numbat
hay and grain production comparisons,                                                       Wallaroo                      Wintaroo                       Tungoo
Table 4 for agronomic features, Table
                                                                                            Mulgara                        Mulgara                       Glider
5 for disease resistance, Table 6 for                       Oat hay
grain quality and Table 7 for hay quality.                                                 Wintaroo                        Tungoo                      Kangaroo
Certain varieties are preferred for                                                         Brusher                       Kangaroo                      Brusher
particular end-uses, so check with hay                                                       Swan                          Brusher                      Mulgara
processors and millers prior to variety
                                                                                                                            Swan                        Wintaroo
selection.
                                                                                            Wallaroo                      Wintaroo                       Tungoo
Is cereal cyst or stem nematode a                                                          Wintaroo                        Tungoo                      Kangaroo
production contraint?                                      Hay and
                                                                                             Swan                         Kangaroo                      Brusher
  Cereal cyst nematode (CCN) and stem                   legume mixes
                                                                                                                           Brusher                      Wintaroo
nematode (SN) are major soil-borne
diseases limiting the yield of oats in                                                                                     Marloo
certain areas of southern Australia. Due                                                                                   Potoroo
to the significant effect of CCN and SN                                                                                     Swan


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       Sowing Guide 2010




particular nematode which is a problem          Table 2. Eight year (2000-2008) average grain yield of oat varieties tested in grain trials (yield as a percentage of
so that multiplication of the nematode          Mitika).
is limited. The variety should also be                                                       Annual Rainfall (mm)                                      no. trials
tolerant so that it yields well in the
                                                                              1 t/ha                 2.5 t/ha                  4 t/ha
presence of the nematode. Yield penalties
                                                Semi-dwarf (husked)
of up to 80% can occur if an intolerant
                                                Echidna                         94                      99                       101                     113
variety is sown in a paddock where CCN or
SN is a problem.                                Mitika                         100                     100                       100                     113
  There are ten varieties resistant to CCN      Possum                          98                      99                        99                     113
(Table 5) and seven of these are also           Potoroo                        105                     100                       100                     113
tolerant: Mulgara, Tungoo, Kangaroo,            Quoll                           95                     100                       101                     105
Wintaroo, Marloo, Wallaroo and Potoroo          Semi-dwarf (naked)
are all varieties with both CCN resistance      Numbat                          61                      61                        61                      24
and tolerance. The remaining three              Tall (husked)
resistant varieties, Yallara, Brusher and       Euro                            91                      92                        93                     113
Euro are intolerant. There are six              Mortlock                        81                      82                        83                     104
varieties tolerant to stem nematode.
                                                Yallara                         94                      93                        94                      67
These are Mulgara, Tungoo, Wintaroo,
                                                Mitika’s yield (t/ha)           1.1                     2.8                      4.4
Glider, Quoll and Echidna. All of these
are rated as resistant to SN except
Echidna which is rated as moderately            Table 3. Four year average hay (2005-2008) and grain (2005-2008) production of oat varieties tested in hay trials
susceptible. Kangaroo, Potoroo, Marloo          (yield expressed as a percentage of Wintaroo).
and Wallaroo are intermediate in their                              Hay yield (% Wintaroo)       no. trials     Grain yield (% Wintaroo)           no. trials
reaction to SN. In cold wet seasonal                                   Potential hay yield                        Potential grain yield
conditions these varieties may suffer more                        3 t/ha       6 t/ha     9 t/ha             1t/ha 2.5t/ha          4t/ha
yield loss than in warmer, drier winter
                                                Tall (husked)
conditions.
                                                Brusher             99            97        96      84         98        95           94               96
Is leaf disease a production                    Glider              92            92        91      70         67        71           73               74
constraint?                                     Kangaroo            96            96        96      94         91        90           90              105
  Resistance to leaf diseases is important      Marloo              93            93        93      83         86        86           87              96
in most environments. However, even             Mulgara             94            95        96      50        101        98           98              58
though varieties are listed as having           Swan                97            96        96      82         96        96           96              95
resistance to stem and leaf rust, changes       Tungoo              93            94        94      50         72        75           76              57
in rust pathotypes can occur. Monitoring        Wallaroo            93            93        94      84        100        93           91              96
of disease levels and application of            Wintaroo           100           100       100      83        100       100          100              83
fungicide may still be required.                Yallara             91           92         92      11        106       106          106               6
  Table 1 should be used to determine
                                                Wintaroo’s          3.2          6.5       9.8                1.3        2.7         4.2
the variety options available for a
                                                yield (t/ha)
particular end use. Next, Table 5 should
be used to further refine your choice.
For example, if a variety for oat hay is
                                                classification criteria for milling grade                    CCN is not a problem, you have the
required in a high rainfall environment,
                                                is an important consideration when                           choice of Yallara, Mitika, Possum, Euro,
Tungoo, Mulgara, Kangaroo, Brusher,
                                                selecting a variety for milling end-use.                     Echidna and Mortlock (Table 1). Table
Wintaroo and Glider are suitable (Table
                                                This is greatly influenced by seasonal                       2 shows the relative yield and Table 6 the
1). Table 3 indicates that Wintaroo is
                                                conditions. Premium milling varieties                        relative grain quality for each of these
the highest yielding variety for hay in this
                                                such as Yallara, Mitika, Possum, Euro and                    varieties. Using this information, choose
environment. However, using Table 5
                                                Mortlock, will reach the classification                      a variety that suits your end use based
Tungoo, Kangaroo, Brusher and Glider
                                                criteria for milling grade more often than                   on whether yield or quality is a priority.
have better resistance to both stem and
                                                other varieties such as Echidna (Table                       Table 4 should also be used to determine
leaf rust and Mulgara has better resistance
                                                6). Although some varieties are not                          if the variety selected matures at the time
to stem rust. These varieties also vary in
                                                considered milling class, they may reach                     required.
their level of resistance to septoria, barley
                                                milling grade criteria, but would not be
yellow dwarf virus (BYDV), bacterial
                                                accepted for milling. It is imperative that                  If export hay quality is required
blight and red leather leaf which may
                                                you check with your miller about the                           Hay quality is essential to meet export
be also be important. Table 4 should
                                                quality standards and varieties that are                     hay standards. It is greatly influenced
then be used to determine if the variety
                                                accepted for milling before you sow a                        by seasonal and nutritional conditions,
selected matures at the time required.
                                                grain crop.                                                  however, some varieties are more likely
                                                  To select a variety for milling grain in                   to produce hay of a higher quality than
Is milling quality required?
                                                medium to high rainfall zones where                          others. It is imperative that you check
  The probability of a variety meeting the


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                                                                                                                       Sowing Guide 2010




with your hay processor about the quality       replace Euro in all areas but particularly                oat with low hull lignin and high grain
standards required to make export grade         where stem and leaf rust can be yield                     digestibility. Mitika averages higher levels
quality hay before you sow a hay crop.          limiting. In addition, Yallara has bright                 of beta-glucan than Possum, Yallara and
Use Table 7 to refine your choice after         grain and high grain digestibility making                 Euro. It is an improvement compared
first ensuring that the criteria in Tables 1,   it suitable for the horse racing industry.                to Possum for grain yield in low rainfall
4 and 5 are met for your situation.             Based on herbicide tolerance trials                       areas. It is recommended for all rainfall
                                                conducted by the SARDI New Variety                        zones but its early maturity suits it to
Oats for grazing                                Agronomy Group, Yallara is particularly                   low rainfall areas where CCN or stem
  This guide contains no guidelines for         sensitive to applications of Banvel-M. For                nematode is not a problem.
oats suited to grazing plus feed grain          more information go to www.nvtonline.
production and repeated grazing from            com.au                                                    PossumA
early sowing. A more comprehensive                                                                          Possum is an early-mid season dwarf
guide for grazing varieties is contained        MitikaA                                                   milling grain oat developed by SARDI and
in the Winter Crop Variety Sowing Guide           Mitika is an early maturing dwar f                      released in 2003. It was commercialised
produced annually by NSW DPI. Please            milling oat developed by SARDI and                        by AWB and is recommended for milling
contact the National Oat Breeding               commercialised by Seedmark in 2006. It                    grain in medium and high rainfall areas.
or New Variety Agronomy Groups for              is resistant to leaf rust and moderately                  Possum has similar yield and grain quality
information on how to obtain a copy of          resistant to stem rust and bacterial                      to Mitika with lower oil content.
this publication.                               blight. However, Mitika is susceptible                      Beta-glucan levels average slightly
                                                to CCN, BYDV, septoria and red leather                    lower than Mitika, and are similar to
Notes on recently released varieties            leaf and intolerant to CCN and stem                       Echidna and higher than Euro. Possum
 Fact sheets or pamphlets describing            nematode. Mitika is a milling quality oat                 is moderately susceptible to stem rust,
all varieties released by the SA based          with high hectolitre and grain weight, low                leaf rust and septoria, susceptible to red
National Oat Breeding Program are               screenings percent and moderately high                    leather leaf and susceptible to BYDV,
available from Primary Industries and           groat percent. It is also a high feed value               bacterial blight and CCN. It is intolerant
Resources (PIRSA), the South Australian
Research and Development Institute
(SARDI), New Variety Agronomy Group             Table 4. Agronomic features of varieties.
or the SARDI website (www.sardi.sa.gov.         Variety                 Early          Plant      Heading       Maturity      Shattering       Standing
au).                                                                   vigour          height                                 resistance        ability
                                                Semi-dwarf (husked)
Milling varieties                               Echidna                   G                 D       EM             EM             R                R
                                                Mitika                    G                 D        E             E              R                R
YallaraA
  Yallara is a medium-tall milling              Possum                    G                 D       EM             EM             R                R
oat variety developed by SARDI and              Potoroo                   G                 TD       E             E              MR              MR
commercialised by Viterra in 2009. Seed         Quoll                     G                 TD      EM             EM             R                R
of this variety will be available in 2010.      Semi-dwarf (naked)
Yallara is a backcross line using Euro as
                                                Numbat                   MG                 D       EM             EM             MR               R
the recurrent parent and a North Dakota
line as the source of rust resistance. It       Tall (husked)
is moderately resistant to stem rust and        Brusher                  MG                 T        E             EM             MS               R
resistant to leaf rust. Long term yield         Euro                      G                 ST      EM             EM             R                R
of this variety is a 2% improvement             Glider                    P                 MT       L             L              MS              MR
compared to Euro. However, yield
                                                Kangaroo                 MG                 MT       ML            ML             MS               R
increases of between 40 and 100% have
                                                Marloo                   MG                 MT       M             EM             MS               S
been recorded for varieties with stem
rust resistance similar to Yallara in years     Mortlock                  G                 MT      EM             EM             R                R
where stem rust is yield limiting. Yallara      Mulgara                  MG                 T       EM             EM             MR              MR
is slightly taller than Euro and 2 days         Swan                     VG                 T       EM             EM             S               MS
earlier to head.                                Tungoo                   MP                 MT      ML             ML             MS              MS
  It has premium oat quality and averages
                                                Wallaroo                  G                 MT       E             E              MS              MS
higher hectolitre weight and groat
percent and lower screenings percent            Wintaroo                  M                 T        M             EM             MS              MR
than Euro, Mitika and Possum. Yallara is        Yallara                  VG                 MT      EM             EM             MR               R
an improvement compared to Euro for             Value for trait: Early vigour: G=good, M=moderate, P=poor, VG=very good, MG = moderately good, MP =
bacterial blight resistance. Like Euro,         moderately poor
Yallara is resistant to CCN but intolerant,     Plant height: D = dwarf, TD = tall dwarf, T = tall, ST = short tall, MT = moderate tall
moderately susceptible to septoria and          Heading and maturity: E = early, EM = early mid, M= mid season, ML = mid late season, L= late
red leather leaf and intolerant to stem         Shattering and standing ability: R = resistant, S = susceptible, MR = moderately resistant, MS = moderately
nematode. Yallara is recommended to             susceptible


                                                                                                                           2010   SARDI Sowing Guide < 27
       Sowing Guide 2010




to both CCN and stem nematode and is            Table 5. Disease resistance of oat varieties - field reactions.
not recommended for areas where either
nematode is yield limiting.                     Colour key: Green is a good choice, yellow use caution and red either do not use or develop a management
                                                package if this disease is yield limiting in your environment
Hay varieties                                                        Rust          Barley           CCN                Stem           Septoria   Bacterial     Red
                                                                                   yellow                            nematode                     blight     leather
MulgaraA                                        Variety      stem           leaf   dwarf     resist-      toler-   resist-   toler-                            leaf
  Mulgara is a tall mid season hay oat                                             virus*     ance        ance      ance     ance
similar in heading time and height to
                                                Semi-dwarf (husked)
Wintaroo. It was tested as SV96025-7 and
limited seed of this line will be available     Echidna         S            S      MS          S           I       MS        MT         S          S          MS
to growers in 2010 through AEXCO Pty            Mitika          MR           R       S         VS           I        S         I         S         MR           S
Ltd.
                                                Possum          MS          MS       S         VS           I        S         I        MS          S           S
  Mulgara is an improvement compared
to Wintaroo for resistance to stem rust,        Potoroo         S            S      MS          R           T        S        MI         S          VS          S
bacterial blight and red leather leaf. It       Quoll           MR          MR      MS          S           I        R        MT        MR         MS          MS
is also an improvement compared to              Semi-dwarf (naked)
Wintaroo for lodging and shattering
                                                Numbat          MR           R       S          S           I        S         I        MR          S          MS
resistance and early vigour. Hay yield is
an improvement compared to Brusher              Tall (husked)
but slightly lower than Wintaroo.               Brusher         MS           R      MS          R          MI       MS         I        MS       MR-MS       MR-MS
  Hay quality is similar to Wintaroo.
                                                Euro            VS           S     MR-MS        R           I        S         I        MS         MS          MS
Mulgara has excellent hay colour and
resists brown leaf at hay cutting.              Glider          MR           R     S-MR        MS           I        R         T         R          R           R
  Grain yield and quality is similar to         Kangaroo        MR          MR     S-MR         R          MI        S        MI      MR-MS      MR-MS       MR-MS
Wintaroo with lower screenings, higher
                                                Marloo          S            S     MR-MS        R          MT       MS        MI         S          VS          S
protein and groat percent. Mulgara has
high grain hull lignin.                         Mortlock        MS           S      MS         MS           I        S         I        MS         MR          MS
  Mulgara is recommended to replace             Mulgara         MS           S      MS          R          MT        R        MT        MS         MR        MR-MS
Wintaroo in areas with stem nematode            Swan            S            S      MS         MR           I        S         I        MS          S           S
due to its higher level of resistance.
                                                Tungoo          MS           R     MR-MS        R          MT        R        MT        MR         MR           R
In tests conducted over six years,
Mulgara averaged 70 nematodes per               Wallaroo        S            S      MS          R          MT       MS        MI         S          S          MS
plant compared to Wintaroo’s 1065.              Wintaroo        S            S     MR-MS        R          MT        R        MT      MR-MS       MR-MS        MS
It is also recommended to replace
                                                Yallara         MR           R      MS          R           I        S         I        MS        MR-MS        MS
Wintaroo where improved lodging
resistance, stem rust, bacterial blight or      * Disease reactions to BYDV may vary with the strain of the virus.
red leather leaf resistance is required.        Key to symbols used: VS = very susceptible, S = susceptible, MS = moderately susceptible, MR = moderately
                                                resistant, R = resistant, VI=- very intolerant, I = intolerant, MI = moderately intolerant, MT = moderately tolerant,
TungooA                                         T = tolerant, VT = very tolerant.
  Tungoo is a medium tall mid to late
season hay variety similar in heading date
to Kangaroo. It was tested as SV95137-           Hay yield is similar to Kangaroo but                           is moderately resistant to stem and
6-3 and limited seed of this line will be      grain yield and quality is similar to Glider.                    leaf rust, intermediate in its resistance
available to growers in 2010 through           Hay digestibility is similar to Wintaroo                         to septoria and bacterial blight and
AEXCO Pty Ltd.                                 (better than Kangaroo), although it                              moderately susceptible to red leather leaf.
  Tungoo has an excellent disease              tends to be higher in NDF and lower in                           It is resistant and moderately intolerant
resistance profile and resists leaf browning   WSC than Wintaroo but an improvement                             to CCN and moderately intolerant to
from hot dry winds.                            compared to Kangaroo. Early vigour is an                         stem nematode and is not recommended
  It combines resistance and moderate          improvement compared to Glider, but not                          for areas where either nematode is yield
tolerance to CCN and SN. Levels of             as good as Kangaroo. It has moderately                           limiting.
stem nematode resistance are similar to        low hull lignin.                                                   Like other varieties bred for hay end
Glider and an improvement compared to                                                                           use, Kangaroo resists leaf browning from
Wintaroo.                                      KangarooA                                                        hot dry winds. Kangaroo has high grain
  Tested over six years, Tungoo averaged         Kangaroo is a tall mid-late season                             lignin. It is recommended for medium
24 nematodes per plant compared                variety developed by SARDI and                                   and high rainfall areas where improved
to Wintaroo’s 1065. Tungoo is also             commercialised by AEXCO Pty Ltd in                               foliar disease resistance is required and
resistant to leaf rust and red leather leaf,   2006. It is one to eight days later to head                      a spread of maturities for hay cutting is
moderately resistant to BYDV, septoria,        than Wintaroo with good early vigour. Its                        desired.
and bacterial blight and moderately            later flowering time makes it less suited                          Hay cut from this variety tends to be
susceptible to stem rust.                      to low rainfall environments. Kangaroo                           high in neutral detergent fibre (NDF)


28 > SARDI Sowing Guide   2010
                                                                                                                      Sowing Guide 2010




and lower in water soluble carbohydrates       Table 6. Grain quality comparisons.
(WSC) requiring a hay quality                  Variety         Hectolitre Screenings       1000      Kernel     Probability     Protein     Oil(fat)     Hull
management program. This may include                            Weight         <2mm       Grain       (%)      of reaching        (%)        (%)        lignin
cutting at an earlier growth stage than                         (Kg/hl)                   weight               milling grade                           content
other varieties, managing the canopy to                                                     (g)
limit excess growth, managing nitrogen         Semi-dwarf (husked)
fertiliser applications or cutting the crop    Echidna             M              M           M        M             M             M          M             MH
higher from the soil surface.
                                               Mitika               H              L           H       MH            H             MH         M              L
                                               Possum               H              L          MH        H            H             MH         M              H
BrusherA
  Brusher is an early-mid season tall oat      Potoroo              L             MH          M        M             -             M          MH             H
developed by SARDI and commercialised          Quoll               ML             ML          M        MH            -             MH         M             SEG
by AEXCO Pty Ltd in 2003. It is two to         Semi-dwarf (naked)
four days earlier to head than Wintaroo        Numbat              VH              H          L         -            -             H          VH             -
and this suits it well to low rainfall         Tall (husked)
areas. Although Brusher has inferior           Brusher             M               M          MH       M         -          MH     M         L
hay yield when compared to Wintaroo it         Euro                 H             ML           H        H       VH          M       L       MH
is recommended to replace this variety         Glider              ML              M          M        ML        -          MH     ML        L
where improved resistance to stem              Kangaroo            M              ML          MH       MH        -          M      M         H
and leaf rust or improved hay quality is
                                               Marloo              M               M          M        M         -          M      M         L
desired.
                                               Mortlock             H             ML           H        H       VH           H     M         H
  Grain yield and grain quality is similar
                                               Mulgara             M               M          MH       MH        -          MH     M         H
to Wintaroo, Wallaroo and Kangaroo
with higher grain protein. Brusher is          Swan                M               M          MH       M         -          M      M         L
moderately susceptible to stem rust,           Tungoo               L              H           L       ML        -          MH     M         L
BYDV, septoria, red leather leaf and           Wallaroo            M               M          M        MH        -          M      MH        L
bacterial blight. It is resistant to leaf      Wintaroo            M               M          MH       MH        -          M      M         L
rust, resistant but moderately intolerant      Yallara              H              L           H        H       VH          MH      L        H
of cereal cyst nematode and intolerant         Value for trait: L = low, M        = medium,   H = high, ML = moderately low, MH = moderately high,
of stem nematode. When there is a              VH = very high, - not applicable
high CCN population in a paddock with
favourable seasonal conditions, Brusher
will have significantly lower hay yield than   Table 7. Hay quality comparisons.
tolerant varieties. Brusher is moderately      Variety             Digestible         Crude              Neutral          Water soluble              Stem
low in grain lignin.                                               dry matter         protein        detergent fibre      carbohydrate             diameter
                                                                     (%dm)         (%dm basis)        (%dm basis)         (%dm basis)
WintarooA                                      Tall (husked)
  Wintaroo is a mid season tall oat            Brusher                 MH               M                  M                   MH                      M
developed by SARDI and commercialised
                                               Glider                  M                M                  M                   M                       M
by AEXCO Pty Ltd in 2001. Wintaroo
                                               Kangaroo                M                MH                 MH                  ML                       L
has higher hay and grain yields than all
                                               Marloo                  M                M                  M                   M                       M
other tall hay oat varieties when grown in
all rainfall zones and is low in grain hull    Mulgara                 M                M                  M                   M                       M
lignin.                                        Swan                    M                M                  M                   MH                      MH
  Care should be taken, however, when          Tungoo                  M                M                 M-MH                 M                       M
selecting this variety in areas where foliar   Wallaroo                M                M                  M                   M                        L
disease resistance is yield limiting.          Wintaroo                M                M                  M                   M                       M
  In these areas, Glider, Kangaroo,            Yallara                 MH               M                  ML                   H                      ML
Brusher, Tungoo and Mulgara all have           Value for trait: L = low, M = medium, H = high, ML = moderately low, MH = moderately high.
better foliar disease resistance spectrums
than Wintaroo. Wintaroo is resistant and
tolerant to CCN and resistant and tolerant     Notes on interstate varieties                            recently in Queensland but not tested
to stem nematode. It is moderately              Many of the varieties in this section were              in southern Australia by the National
resistant to septoria and barley yellow        evaluated in a limited number of trials in               Oat Breeding Program include: Outback
dwarf virus, susceptible to stem and leaf      southern Australia. More information is                  by Seed Distributors, and Monty and
rust and intermediate in its resistance to     available from the SARDI National Oat                    Mammoth by Heritage Seeds.
bacterial blight. Wintaroo has excellent       Breeding Program and should be sought                      These varieties were released as grazing
resistance to brown leaf tipping by hot        before attempting to grow these varieties.               varieties and are generally late maturing.
northerly winds so care is needed to assess                                                             Advice should be sought before growing
the crop for optimum cutting time to           Queensland varieties                                     any of these varieties in southern
ensure good quality.                            Other oat varieties with PBR released                   Australia.


                                                                                                                            2010    SARDI Sowing Guide < 29

				
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Description: The oat variety descriptions in this Oat variety sowing guide 2010