Lentil varieties PBA Bolt, PBA Hallmark XT and PBA Jumbo2 showed good tolerance to a range of lentil herbicides or herbicide mixtures at registered rates and timings with good crop safety margin.

Unregistered use pattern of Brodal® (diflufenican) at 200 mL/ha as PSPE and of Metribuzin 750 at 100 g/ha in mixture with Brodal® 100 mL/ha as post-emergent application reduced seed yield of PBA Bolt and PBA Jumbo2 significantly.

Note: Always follow label recommendations. The Department Primary Industries and Regional Development, does not endorse the use of herbicides above the registered rate or off-label use of herbicides or off-label tank mixes. Crop tolerance and yield responses to herbicides are strongly influenced by seasonal conditions.

Lentil varieties PBA Bolt, PBA Hallmark XT and PBA Jumbo2 showed good tolerance to a range of lentil herbicides or herbicide mixtures applied at the label rates and timings with good crop safety margin.

Unregistered use pattern of Brodal® (diflufenican) at 200 mL/ha as PSPE and of Metribuzin 750 at 100 g/ha in mixture with Brodal® 100 mL/ha as post-emergent application reduced seed yield of PBA Jumbo2 significantly.

Note: Always follow label recommendations. The Department Primary Industries and Regional Development, does not endorse the use of herbicides above the registered rate or off-label use of herbicides or off-label tank mixes. Crop tolerance and yield responses to herbicides are strongly influenced by seasonal conditions.

• Interactions between herbicide and application rate did not have differing responses for grain yield, biomass yield, or gross margin at Minnipa, 2018.
• Combined herbicide and application timing treatments did show differences in grain yield, biomass yield and gross margin.
• Metribuzin and Diuron treatments indicated increased safety levels (58-466% higher biomass and 6-161% higher grain yield) and lower economic risk compared to Terbuthylazine treatments.
• For herbicide applications incorporated by sowing, Metribuzin was of lower economic risk (45% higher gross margin) than Diuron.

• Over the longer term PBA Hallmark XT has outperformed PBA Hurricane XT and growers interested in IMI tolerant lentils are encouraged to try this variety on their farm

• Timely harvest can make a big difference to yields when lentils produce high biomass. • Over the longer term PBA Hallmark XT has outperformed PBA Hurricane XT and growers interested in IMI tolerant lentils are encouraged to try this variety on their farm

• PBA Hallmark XT – the new imi tolerant variety released in 2018 –performed well at Mingenew matching the yield of all other released varieties.
• Over the longer term PBA Hallmark XT has outperformed PBA Hurricane XT and growers interested in IMI tolerant lentils are encouraged to try this variety on their farm.

• There was a small difference in plant establishment between the varieties and breeding lines (see Table 3 in attached trial report summary).  The two CIPAL lines had significantly higher plant populations than PBA Bolt and PBA Jumbo2.  However, these treatments still had adequate plant densities, and this is not expected to have affected grain yield in such a dry season.
• There were no significant differences in grain yield between varieties with a mean yield of 0.39 t/ha across all varieties and breeding lines.  Prior to harvest a blackening of the lentil foliage was noticed, therefore a visual score of the percentage of blackening observed in each plot was recorded.  It is unknown what caused this effect; however, it could relate to underlying variability of subsoil constraints.  There was a significant difference between varieties for blacking score with PBA Jumbo2 and PBA Hurricane XT showing significantly less blackening than the other varieties.  This score was also used as a covariate in the grain yield analysis however this still did not result in significant differences. 
   

• There were no significant differences between treatments for any of the variables measured on the sandy loam soil.
•  The mean grain yield across all treatments was 0.55 t/ha which was slightly higher than that achieved on the contrasting loam soil type (0.39 t/ha).  This outcome reflects higher levels of plant available water on lighter textured soils under low rainfall conditions such as those experienced in 2018. 

• Growth of lentil varieties and breeding lines was poor and grain yields were very low due to extremely dry conditions and multiple frost events during the growing season. Several of the salt tolerant lines appeared to show better growth early in the season.
• PBA Hurricane XT matured relatively early compared to other recently released varieties under dry conditions.
• Consistent with previous seasons, the new breeding line CIPAL1504 had grain yield similar or higher than recently released varieties, highlighting its yield stability and potential for future release.  

• The grain yield of lentil varieties and breeding lines varied widely from as low as 0.28 t/ha to 0.72 t/ha (see Table 3 in attached trial report summary).  PBA Ace was the highest yielding treatment and the only commercial variety to yield higher than the new PBA genotypes: Len3, CIPAL1504, Len4 and Len5.  
• With the exception of PBA Ace, the yields of all other commercial varieties were similar.  
• The line Len 1 was the worst performing treatment in the trial.  It was noted that it flowered and matured significantly earlier than all other treatments and therefore may have been adversely affected by the dry weather during September, relative to other lines. 

• Normalised Differential Vegetation Index (NDVI) was used to compare lentil growth of varieties across the 10 subplots.  As shown in Figure 1 in the attached trial report summary, lentil growth was greatest on the flat soil type (bay 1-3), however productivity declined on the mid-slope and sand dune (bay 4-10).  Overall, PBA Ace had the highest NDVI, but that varied across the bays. In the sandier (mid slope and sand dune) bays, PBA Hurricane XT and CIPAL 1721 performed relatively well.  

• There was no statistically significant effect of herbicide treatments on the grain yield of lentils or pod maturation (see Table 3 in attached trial report summary).  Although there were no significant differences for grain yield or pod maturity, the treatments resulted in visual differences in foliage greenness 7 days post application.

• PBA Hurricane XT lentils continue to show tolerance to all group B herbicides tested in this trial, presenting an opportunity for flexibility in crop rotations.
• PBA Hurricane XT lentils displayed small amounts of yellowing and stunting from some herbicides, most evident following ‘SU2’ applied at 4 node, however they recovered quickly. No grain yield reduction was observed in PBA Hurricane XT from any of the herbicides applied in this trial.
• PBA Jumbo 2 displayed a significant yield reduction from terbuthylazine incorporated by sowing (IBS) in comparison to simazine applied IBS. As would be expected, the application of ‘SU1’ post-sow preemerge (PSPE) and ‘Imi2’ at 4 node significantly reduced grain yield in comparison to all other treatments.
• Early in the growing season, both varieties showed slightly more damage from terbuthylazine than simazine both applied IBS.
• ‘Imi1’ and ‘SU2’ both displayed the worst physical herbicide damage but recovered over time. 

•  All results need to be treated with caution, due the dry conditions, frosts and weed burden at the trial site. Similar to previous research PBA Hurricane XT showed tolerance to imidazolinone herbicides and improved tolerance compared with PBA Jumbo2 to sulfonylureas and sulfonamide herbicides. Flowering applications, as expected generally had the most significant reduction on grain yield. The improved weed control in several of the herbicide treatments meant that significant yield gains were commonly observed in the herbicide treatments. 
   

• ‘LGPC’ demonstrated improved tolerance to Metribuzin compared to PBA Jumbo2, particularly on the sand dune.

• Applications of metribuzin PSPE significantly reduced lentil establishment compared to IBS and the untreated control (see Figure 1 in attached trial report summary).  Across all varieties and sowing depths, establishment following the PSPE application was 75 plants/m2 while the IBS and untreated treatments had a plant establishment of 100 plants/m2.  Damage following PSPE application of metribuzin was particularly severe in the PBA Hurricane XT lentils.  The 4 node treatment had similar establishment to the control as the in crop herbicide treatment had not been applied at the time of the establishment assessment. 
• See attached trial report summary for further results and interpretations.

• PBA Jumbo2 showed significant herbicide damage from all the herbicide treatments except applications of up to ‘r2’ of ‘HTGpC-D’, ‘r2’ of ‘HTGpC-H’ and ‘r1’ of ‘HTGpC-F’ at the four node stage.
• The new genotype ‘LGPC’ had no significant herbicide injury from any herbicide treatment except ‘HTGpC-A’.
• Both genotypes showed the highest sensitivity to application of ‘HTGpC-A’ at the four node stage.
• Grain yield results should be interpreted with caution due to very dry seasonal conditions and yield loss in ‘LGPC’ due to seed shattering. 

• PBA Jumbo 2 showed significant herbicide damage and a 38-73% yield loss from application of higher rates of ‘HTGpC-E’, ‘HTGpC-B’ and both low and higher rates of ‘HTGpC-A’, ‘HTGpCC’ and ‘HTGpC-G’. In contrast, the genotype ‘LGPC’ showed improved tolerance to post emergence application of various Group C herbicides and Group C & F mixes, and produced biomass and grain yields equivalent to the nil treatment. 

• A significant reduction in biomass was observed when phosphorus was omitted from the fertilizer on both soil types, however grain yield was reduced only on the sandhill, not swale.
• The dry growing season conditions may have reduced movement and uptake of the applied macro and micro-nutrients by the crop. Hence, results should be treated with caution.

• NDVI indicated differences in lentil growth with low values in treatments which received no nitrogen (see Table 3 in attached trial report summary).  The highest values were in the treatments which received all macro nutrients (All and Alltrace elements).  
• Biomass data was collected from bays 3, 5 and 9.  Individually no bay showed statistically significant effects of the treatments, but collectively there was significance at the p < 0.01 level (see Figure 1 in attached trial report summary).  The treatments with the lowest biomass were the All-N and Nil plots which both had no nitrogen added.
• The only significant effect on grain yield was in bay 4 where the All-N and Nil treatments were lowest.  While the grain yield in this bay was very low, the response is consistent with the data from both NDVI and biomass. 

• Lentils are not traditionally grown in the Victorian HRZ. Mid-season vigour was good and suggested a promising fit for lentils in the region, but late rain in November caused lodging and significantly reduced yields, highlighting the importance of sowing into standing residue.
• Sowing on May 14 increased crop biomass compared to sowing on May 31, but this did not translate into greater grain yields.

•  Lentils are not traditionally grown in the Victorian HRZ. Growth vigour was good and suggested a promising fit for lentils in the region, but unfavourable weather during reproductive stages, and late rain in November that caused lodging reduced grain yields.
• Large numbers of pods were dropped before harvest, with more than twice the number of pods dropped in plots sown on May 17 compared to June 6.  
   

• Grain yields of varieties and breeding lines were very low due to dry seasonal conditions. Hence, results of these trials should be interpreted with caution.
• Several frosts during the flowering and podding phase significantly impacted grain yields, particularly the earlier sown treatments which were further advanced in the reproductive phase and unable to recover. As a result, the trends observed in 2018 are completely opposite to long term trial results in low rainfall environment for lentil, which generally indicate significant benefits from earlier sowing.
• The mid/late maturing breeding lines CIPAL1504 and CIPAL1522 have consistently performed well in the Mallee across multiple seasons, highlighting the yield potential of advanced lines coming through the breeding program.

• Grain yields of varieties and breeding lines were very low due to dry seasonal conditions and extreme temperature events (heat and frost) during the growing season. Hence, results of this trial should be interpreted with caution. Long-term data and additional information should be considered when making varietal or agronomic decisions.
• Several frosts during the flowering and podding phase significantly impacted grain yields, particularly the earlier sown treatments which were further advanced in the reproductive phase and unable to recover. As a result, the trends observed in 2018 are completely opposite to long term trial results for lentil, which generally indicate significant benefits from earlier sowing.
• The mid/late maturing lines CIPAL1504 and CIPAL1522 have consistently performed well across multiple seasons, highlighting the yield potential of advanced lines coming through the breeding program. 

• Lentils were better at establishing and reaching target plant densities than canola.
• Canola was considerably more responsive to converting increasing sowing densities into yield than lentils.
• Seeder type had no consistent effect on establishment and yield.
• The differences in yield response to plant numbers suggests that it is more critical to get it right in canola than lentils.

Irrigation in spring did not improve yield or grain quality of the chickpea and lentil varieties tested

Drainage was the key to preventing crop damage rather than irrigation timing

 

Drainage is the key to successful irrigated pulses. The subsurface drip irrigation without beds resulted in prolonged soil waterlogging which impacted establishment and plant survival in spring.

In the post emergent treatments a range of herbicides produced very good control of all oilseed and legume crops included.

• Growers and advisers should be vigilant in applying protective fungicide sprays in chickpea and lentil crops for ascochyta blight.
• Many current and minor use permit fungicides trialed at Hart in 2017 provided good preventative control (less than 10% of plants infected) for ascochyta blight including; chlorothalonil, Aviator Xpro, Cabrio and Captan.

PBA Bolt is a good first choice for Esperance lentil growers, with PBA Ace an option for early sowing or longer seasons. The new XT line CIPAL1422 performed well and may be a valuable alternative to PBA Hurricane XT for those growers wishing to use imazethapyr (e.g. Spinnaker^®) or facing SU carryover issues.

PBA Samira was the highest yielding released faba bean variety at Wittenoom Hills.

• Grain yield across all crops were exceptional in 2016 despite a relatively late break and sowing date. Yields were aided by exceptional spring conditions where there was abundant moisture and cool finishing conditions.
• Field peas were the most productive crop grown across all soil types in 2016 and averaged an exceptional 2.9 t/ha. Vetch (2.2 t/ha), narrow leaf lupin (2.1 t/ha) and lentils (2.1 t/ha) also averaged over 2 t/ha across the four trial sites. Faba beans yielded just under 2 t/ha while both chickpea treatments yielded above 1.5 t/ha (Kabuli 1.5; Desi 1.8 (t/ha). Both canola and albus lupins averaged less than 1.5 t/ha.
• High value crops such as desi and kabuli chickpeas produced extremely high gross margins on approximately $2000/ha. Lentils also had an average gross margin of over $1000/ha across the four trial sites.
• Break crop productivity and profitability was very different between common Mallee soil types with the poorest break crop productivity and profitability on the deep sand at Loxton in 2016.

• The yield of both pulse crops decreased in general when delaying sowing.
• Modifying sowing time produced changes in the phenology that affected main yield components and grain yield.
• In general, the later sowing dates reduced grain number/m² and produced a lower thousand grain weight.

• In the post-emergent treatments a range of herbicides produced very good control of all oilseed and legume crops included.

• The AB isolate caused a moderately susceptible disease reaction in unprotected (Nil) plots on varieties which are currently rated as being MR (PBA Blitz) and MR/MS (Nipper, Nugget and PBA Greenfield) which indicates a change in virulence of the AB isolate resulting in a loss of foliar AB resistance in these varieties.
• Research conducted by SARDI Pathology group and reported elsewhere (Pulse Diseases 2017, GRDC Updates 2017 proceedings) has shown that the AB isolate tested in the current trial, caused susceptible reactions in PBA Hurricane XT and disease reactions in PBA Ace and PBA Bolt when tested under controlled environmental conditions. This results were however not confirmed under field conditions in the current trial.
• The current results suggest that there is a change of virulence in the AB pathogen which may be causing a loss in foliar resistance on varieties currently rated as being relatively resistant. The AB isolate tested was collected from the high intensity lentil producing area in the Yorke Peninsula region in SA.
• Protection of the plant foliage through application of fortnightly Chlorothalonil significantly increased yield in the most susceptible variety, PBA Flash (76 %) over unprotected (Nil) plots.
• Grain yields were also improved in varieties that had moderate disease reactions together with those varieties that showed no disease symptoms, indicating the importance of fungicide sprays in not only controlling disease but also enhancing plant growth.
• All commercial lentil varieties should be managed as having potential for risk from foliar AB especially under favourable conditions that promote disease. Varieties will need close monitoring for disease during the growing season and strategic fungicide sprays will be required in all varieties even in the absence of disease symptoms particularly in varieties rated as having foliar resistance to AB pathogen.

There was no significant difference between the lentil counts, but there was a trend evident of some of the group C herbicides causing some slowness and even plant death. Rain events in the first month post planting were below average, it is likely that those herbicides that are known to have some level of toxicity to lentils (such as Metribuzin) were concentrated in the furrow and thus negatively affected some of the germinating plants.This apparent damage  highlights the importance of understanding how herbicides interact with the soil type, stubble loading and the planted crop.

• Break crops faced a range of tough environmental conditions in the Mallee in 2015 including multiple frost and heat shock events.
• Timely rainfall in April and hence early sowing resulted in excellent biomass production with most crop options producing on average more than 2 t DM/ha and several break crop options producing greater than 2.5 t DM/ha.
• The highest grain yields tended to be crops with the quickest maturity such as lentils (0.73 t/ha), vetch (0.64 t/ha) and field peas (0.63 t/ha).
• High value crops such as lentils and vetch were highly profitable due to both excellent prices and reasonable grain yields.

• Break crops faced a range of tough environmental conditions in the Mallee in 2015 including multiple frost and heat shock events.
• Timely rainfall in April and hence early sowing resulted in excellent biomass production with most crop options producing on average more than 2 t DM/ha and several break crop options producing greater than 2.5 t DM/ha.
• The highest grain yields tended to be crops with the quickest maturity such as lentils (0.73 t/ha), vetch (0.64 t/ha) and field peas (0.63 t/ha).
• High value crops such as lentils and vetch were highly profitable due to both excellent prices and reasonable grain yields. (v) Break crop productivity and profitability was very different between common Mallee soil types.

• Field peas have proven to be the most reliable pulse option on the upper Eyre Peninsula with yields remaining the most stable across seasons.
• Under favourable conditions there is potential for alternative pulse crops to be successful.
• Paddock selection, soil type, time of sowing, pulse agronomy, marketing and storage options all need careful consideration when looking at growing alternative pulse crops.
• New varietal options offer earlier maturity as well as improvements in harvestability, disease resistance and herbicide tolerance over older commercial standards, aiding production and profitability.
• Higher value alternatives, such as lentils, may be a high risk option and pulse crops better suited to the region could still prove to be the most profitable option in the long term.

• In the post emergent treatments, a range of herbicides produced very good control of all oilseed and legume crops included.

Seeding rate of lentils in the Mallee could be lowered from 120 to 80 plants/m2, particularly with new disease resistant varieties sown early. Lentils were profitable in the mallee, producing up to $653/ha at Kulwin and $433/ha at Curyo.

• PBA Ace and PBA Jumbo2 performed very well across a range of agronomic characters, compared to the other varieties tested in this experiment.
• Sowing time was a critical management factor in the 2015 season.
• Sow lentil early to late May in the eastern cropping region of southern NSW.
• Target establishment densities of 120 plants m2 in this environment.

No damage to lentils was observed, but it should be noted that conditions were not conducive to herbicide damage.  Following label rates will ensure that the risk of damage is minimized.  Using a range of pre-plant and post-plant-pre-emergent herbicides will assist in reducing pressure on in-crop herbicides for grass weed control such as Clethodim (group A).  Rotating herbicide groups and sound manual methods such as wind row burning, chaff carts and fence line spraying will ensure that weed numbers are kept in check and “blow-outs” of weed numbers is minimised.

Early vigour – no significant difference. 

NDVI, 3 September - no significant difference.

Yield – see results.

• Combined results from the sowing date and disease management trials indicated PBA Blitz and PBA Greenfield were more severely affected by ascochyta blight than previously observed relative to other varieties. This has resulted in a drop in their disease ratings relative to other varieties.

• Our results show that stubble management (reduction in height from 40cm to 5cm) had no improvement on yield and lodging between crop types and varieties within a crop type under the seasonal conditions in 2014.

• Due to climatic conditions frost and dry conditions there was no effect of crop topping and harvest timing in 2014.

• Response of lentils to herbicide treatments varied with seasonal conditions, method of herbicide incorporation, stubble coverage, soil texture and fertility.
• Treatments that showed high plant damage generally incurred high yield losses, however low levels of chlorosulfuron plant damage still resulted in significant yield loss in some trials

Rotation of herbicide groups paramount for effective brome grass control, ensure that group B herbicides are not used too often in the rotation

• PBA HurricaneXT has improved tolerance to the sulfonylurea herbicides relative indicating significant benefits where residues may be an issue in cropping systems.

• PBA HurricaneXT has improved tolerance to the sulfonylurea herbicides relative indicating significant benefits where residues may be an issue in cropping systems.