Strategies to manage Yellow Rust Disease in Wheat

1 comment Dec 30, 2020

Wheat is one of the most popular and important winter seasons crops of India, which is sown during the month of November and harvested between March and April. Wheat has rich source of protein, and is the staple food in the country. India is one of the leading producers of wheat in the world, however in the recent years, Yellow rust in wheat has emerged as serious disease in the country, which has become a threat to the wheat growing farmers.

Pathogen causing Yellow rust in Wheat

Yellow rust in wheat also known as Stripe rust is caused by the pathogen Puccinia striiformis f. sp. tritici. The disease affects the plants at different growth stages from vegetative to final maturity stage.

Causes of Yellow rust in Wheat:

Cool climatic conditions with humid environment including rains and fog during growing season will influence the growth and spreading of the disease
When the temperature of just 3-4 ° C higher compared to normal, along with rain or foggy environment is found very much conducive for yellow rust in wheat. The effect of temperature variation will be seen after one month.
The disease even spreads through wind
Heavy dew or intermittent rains will increase the disease severity
Sowing the same type of wheat varieties for many years in the disease prone areas
Growing varieties which are not recommended for that particular regions become more susceptible or acts as spreading agents
The pathogen spores will survive in wheat as dormant mycelium in cool climatic conditions

Symptoms of Yellow rust in Wheat:

Rust pustules on Wheat leaf blade, leaf sheaths, spikes, spikelets, glumes and awns

Small bright, yellow-coloured stripes (pustules) appear parallelly all along the venations of leaf blade, leaf sheaths, spikes, spikelets, glumes and awns

Break opening of Pustules and yellowing, browning and drying of infected tissue

The mature pustules will break open and release yellow orange masses of fungal spores. As the plant matures, the infected leaves and tissues turns to yellowish, then brown and later dry.

Rust infected weak plants with reduced growth and yield

It affects the photosynthesis activity, as a result it leads to stunted growth with weakened plants, shrivelled grains with only few spikes, very less grains per spike and reduced grain weight.

Rust infected spikelets with reduced grain yield

Ultimately it can cause around 50% yield loss, but under severe conditions can cause 100% yield loss.

Also Read: Want to increase growth and yield in your wheat crop?

Preventive measures to avoid Yellow Rust in Wheat

Use only registered, good quality seeds from genuine source
Select resistant and region-specific varieties for sowing
Seed treatment with bio-agents like Trichoderma viridae @ 4 gm/kg of seeds ((Ecoderma or Sanjeevni or Multiplex Nisarga or Treat Bio-Fungicide or Alderm @)
Follow crop rotation

Management of Yellow rust in Wheat

i). Preventive/Prophylactic spray applications: The prophylactic application of below mentioned Strobilurin (Strobins) class of fungicides gives excellent results in preventing the disease incidence.

SI. No.	Chemical name	Trade Name
1	Novalstrobilurin	Ergon @ 0.75- 1ml/lit
2	Azoxystrobin	Amistar @ 1ml/lit
3	Azoxystrobin + Difenoconazole	Amistar top @ 0.5 ml/lit

Note: Spray application can be taken once or twice after 30 days of sowing @ at 20-25 days interval.

ii). Curative Measures:

Curative spray applications after the incidence of disease with Triazoles class of fungicides will give excellent results. Even, the combinations of both Strobilurin and Triazoles class fungicides can be sprayed which gives best results in controlling yellow rust in wheat.

a. Triazoles fungicides: The following fungicides are found to be best and these chemicals claim particularly for controlling yellow rust in wheat crop

SI. No.	Chemicals	Trade Name	Remarks
1	Propiconazole	Zerox @ 2ml/lit	These four fungicides claim particularly for controlling Yellow rust in Wheat
2	Propiconazole	Tilt @ 0.5 ml/lit
3	Difenoconazole	Score @ 0.5 ml/lit
4	Tebuconazole	Folicur @ 1-1.5 ml/lit

Other Zoles fungicides for controlling yellow rust in wheat

5	Hexaconazole	Contaf @ 2ml/lit
6	Hexaconazole	Contaf plus @ 2ml/lit
7	Propiconazole + Difenconazole	Taspa @ 0.5 ml/lit
8	Propiconazole + Difenconazole	Vespa @ 0.5 ml/lit

b. Triazoles+ Strobins fungicides: The below fungicides with combination of both triazoles and strobins will help in controlling wheat rust

SI. No.	Chemical Name	Trade Name	Remarks
1	Azoxystrobin + Tebuconazole	Custodia @ 1ml/lit	These two fungicides claim particularly for controlling Yellow rust in Wheat
2	Azoxystrobin + Tebuconazole	Sukoyaka @ 1ml/lit

3	Azoxystrobin & Difenoconazole	Latifa @ 1ml/lit
4	Tebuconazole + Trifloxystrobin	Nativo @ 0.5 gm/lit
5	Azoxystrobin + Difenoconazole	Amistar top @ 0.5 ml/lit

c. Triazoles + other components: Apart from this, other fungicides with triazoles along with other chemical formulation which are proved to cure yellow rust in wheat includes

SI. No.	Chemical Name	Trade Name
1	Fluopyram+ Tebuconazole	Luna experience @ 1ml/lit
2	Tricyclazole + Mancozeb	Merger @ 1.5-2 gm/lit
3	Metiram + Pyraclostrobin	Cabrio top 2.5-3 gm/lit
4	Zineb + Hexaconazol	Avtar @ 2-2.5 gm/lit
5	Hexaconazole + Captan	Taqat @ 2.5-3 gm/lit

Organic method of managing Yellow rust disease in wheat:

The below organic products can be sprayed both as preventive as well as curative measure to manage the Yellow rust disease in wheat.

SI. No.	Products		Product
1	Multilaxin @ 3-4 ml/lit	+	Neel Cu EDTA @ 0.5 gm/lit
2	Kitoguard @ 1-1.5 ml/lit
3	Phytoalexins 84 @ 3-4 ml/lit

To know more about products to manage with Yellow Rust disease in Wheat click the below link

https://www.bighaat.com/collections/control-of-rust-disease-in-your-crop

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Dr. Asha K M

BigHaat

For more information kindly call on 8050797979 or give missed call on 180030002434 during office hours 10 AM to 5 PM

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Disclaimer: The performance of the product (s) is subject to usage as per manufacturer guidelines. Read enclosed leaflet of the product(s) carefully before use. The use of this product(s)/ information is at the discretion of user.

1 comment

UmarDaraz Feb 19, 2023

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