Category

Fungicides

Barley Fungal Systems

By Fungicides, South Stirlings

Objectives

  1. Highlight the “do’s and don’ts” of fungicide use in barley.
  2. Demonstrate effective MOA rotations and mixes.
  3. Demonstrate effective seed treatments, Z32 foliar applications and Flag leaf applications.

Background

The trial was sown on the 25th of May in the South Stirlings region on a paddock that rotates barley and canola. In-furrow treatments were applied using a split boot system and the seeding depth was 20-30mm. A dry start to the season led to a decile one for disease in 2020. Low pressure combined with stressful crop conditions were not conducive for a fungal environment.

PRE SEEDING

Pre-seeding Knockdown – 5/5/2020: Glyphosate 1L/ha, Goal 60ml/ha, Hammer 400EC 15ml/ha, Wetter1000 0.2%, Ammonium Sulphate Herbicide Adjuvant.

Nitrogen- 15/5/2020: Flexi N 80L/ha.

Immediately Pre seeding – 15/5/2020: Paraquat 1L/ha, Treflan 2L/ha, Metribuzin 750WG 125g/ha, Conquest Alpha Forte 250 SC 40ml/ha.

Seed and In-furrow treatments 15/5/2020: As per trial design.

SEEDING 

Seeding- 15/5/2020: Barley RGT Planet 64kg/ha, Double Phos 132kg/ha, Sulphate of Potash 50kg/ha.

POST SEEDING 

Nitrogen Top-up- 24/6/2020 – Flexi N 80L/ha.

Z32 Application Sprays – 13/8/2020: As per design.

Z32 Bumper Spray – 17/8/2020: As per design.

Flag Leaf Application Sprays – 4/9/2020: As per design.

Results

Dots on the graphs represent data points from each replicate.

10 days post flag leaf sprays

Leaf infection rating (1-10)  12 WAS

Leaf infection rating (1-10) 20 WAS

Yield

Return on Investment and Yield

Photos

12WAS

20WAS

Control vs Bumper fb Bumper

Control vs Z31 Radial

Control vs Flagleaf Radial

Control vs Topnotch fb Radial

Control vs Flagleaf Aviator xpro

Control vs Topnotch fb Aviator Xpro

Control vs SD Systiva

Control vs Systiva fb Z31Radial

Control vs Systiva fb Flagleaf Radial

Control vs SD Systiva fb Topnotch  fb Radial

Control vs SD Systiva fb Topnotch fb Aviator Xpro

Control vs IF Uniform +  Vibrance

Control vs IF Uniform + Vibrance fb Radial

Control vs IF Uniform + Vibrance fb Flagleaf Radial

Control vs IF Uniform + Vibrance fb Topnotch fb Radial

Control vs IF Uniform + Vibrance fb Topnotch fb Aviator Xpro

Key Findings

  • A decile 1 year for disease resulted in no significant difference between treatments with respect to yield, however, there were numerical differences.
  • Conical snail damage late September, snails moving up the canopy and feeding on the upper leaves – were inverting the green leaf retention results.
  • SD Systiva 150ml/100kg fb Z31 Radial 600ml/ha was the most effective treatment, reducing infection of FL-2 by 18% compared to the control. However, this was not significantly different to most of the treatments (including the control) due to low disease pressure.
  • Z31 Topnotch 400ml/ha with SD Systiva fb FL Radial and Z31 Topnotch 400ml/ha with SD Systiva fb FL Aviator X-Pro reduced disease by 16% and 17% respectively compared to the control.
  • Level of disease pressure must be taken into account when deciding whether to use fungicides
  • This trial indicates the benefits of well-timed treatments. Be it seed treatment with a follow up spray or a Z31 foliar spray followed by a Flag leaf foliar spray.
  • Crops are generally considered at risk of yield loss when SFNB is easily found on all plants and the infection affects more than 10 per cent of the leaf area. Rainfall during late winter and spring favours SFNB infection and will increase potential losses. Therefore, the 2020 season is a prime example of when not to spray, in order to gain the most economic value from your crop and your system.

Seed applied treatment for the control of Crown rot in wheat

By Beacon, Fungicides

Pending registration, Syngenta’s new seed dressing is referred to as ‘SD’ throughout this document. 

Objectives

  1. How does Vibrance compare to standards in the control of crown rot?
  2. How does Syngenta’s new seed dressing (SD) compare to standards in the control of crown rot?
  3. How does Vibrance/Syngenta’s new seed dressing (SD) compare to standards in the control of crown rot?
  4. Are treatments safe to the crop?

Background

The trial was sown on the 19th of May in Beacon, WA. The site has a history of crown rot.

PRE-SEEDING 

Immidiately Pre-seeding – 19/5/2020: Treflan 1.5L, Ammonium sulphate 1%, Diuron 900 WDG 180g/ha, Sakura flow 210ml/ha, Pyrinex  super Insecticide 250ml/ha.

SEEDING

Seeding- 19/5/2020: Wheat Scepter 63kg/ha, Flexi N 40L/ha, K-Till Extra 48kg/ha.

Seed treatments: Applied 1 week prior to planting, as per design.

Results

Emergence ratings at assessments 14 & 28 DAS.

Crown to first node discoloration incidence and severity, percentage (%) of browning Mid grain fill (10/9/2020)

Crown discoloration incidence/plot 16 WAS

Yield

Key Findings

  •  Emergence counts conducted at 14 & 28 DAS saw no significant differences between treatments (P>0.05).
  • Crown to first node discoloration incidence and severity percentage ratings were low due to a lack of disease in the crop.
  • Crown discoloration was observed only in the untreated, Vibrance 360ml/100kg and Rancona Dimensions 320ml/100kg.
  • SD seed treatment stand alone at 1x, 2x and 3x rate as well as SD 1x + Vibrance all compared well to standards in the control of crown rot.
  • The addition of Vibrance to SD  improved disease control.

Emergence Photo’s 28DAS 24/6/2020

SSD 3xml/100kg

SSD 2xml/100kg

Untreated Control

Vibrance 360ml/100kg

Rancona Dimension 320ml/100kg

Evergol Energy 260ml/100kg

SSD 1xml/100kg

Vibrance + SSD 180ml + 1xml/100kg

Basal browning assessment 7/10/2020

Control vs Vibrance 360ml/100kg

Control vs Rancona Dimensions 320ml/100kg

Control vs Rancona Dimensions 320ml/100kg

Control vs Evergol Energy 260ml/100kg

Control vs  SSD 1x ml/100kg

Control vs SSD 2x ml/100kg

Control vs SSD 3x ml/100kg

Control vs Vibrance 180ml/100kg + SSD 1x ml/100kg

Revystar Barley Foliar Fungicide

By Dumbleyung, Fungicides

Company: BASF

Objective:

  1. Compare the commercial performance of Revystar Fungicide for disease control versus competitor fungicides.
  2. Give growers & industry members an opportunity to assess Revystar in a commercial environment.

PRE-SEEDING

Early Knockdown 23/03/20 – NuFarm WeedMaster DST 1.5L/ha; BASF Sharpen 20g/ha; NuFarm Kamba 750 200mL/ha; VicChem Hasten 1%; Ammonium Sulphate 1%.

Pre-Seeding Knockdown 27/05/20 – NuFarm WeedMaster DST 1L/ha; Corteva Goal 60mL/ha; FMC Hammer 15mL/ha; Wetter 1000 0.2%; Ammonium Sulphate 1%.

Immediately Pre-Seeding 02/06/20 – ADAMA Spraytop 1L/ha; NuFarm TriflurX 2L/ha; Sipcam Stacato 125g/ha; Conquest Alpha Forte 40mL/ha.

SEEDING

Seeding 02/06/20 – Sparticus Barley 70 kg/ha; Raxil T SD 100mL/100kg; Double Phos 130kg/ha; Sulphate of Potash 50 kg/ha

POST EMERGENT

Nitrogen Top-up 10/07/20 – CSBP Flexi-N (50L/ha).

Radish Control 20/07/20 – Bayer Tigrex (750ml/ha); Syngenta Logran (5g/ha); Conquest Alpha Forte (60mL/ha); Dimethoate (150mL/ha).

Treatment Sprays 26/08/20 – Products and rates in design above.

21 DAA

28 DAA

48 DAA