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Wheat and hybrid barley agronomy insights for right now

Agronomy Issues
30.04.2021

Winter wheat and barley crops are currently at a wide range of growth stages following a relatively dry and cool April with some late frosts. Fertiliser programmes have now been completed for many feed wheat and barley crops, however, dry and cool weather has limited uptake of nitrogen in some of these fields. Many wheat and barley crops are suffering from stress and are shorter than normal, with disease continuing to affect the lower leaves. Below are the key agronomy tips for feed wheat varieties and hybrid winter barley right now from Syngenta.

 

Key agronomy for wheat

T2 is the key fungicide timing in wheat for protecting the flag leaf which has the highest yield building potential.

• Monitor disease levels in crops and adjust fungicide programmes according to variety, drill date, local risk, and disease pressure.

• Apply appropriate fungicides, typically SDHI/triazole-based products such as ELATUS Era (if not already used at T1), together with a multi-site like folpet at T2 to control disease and protect fresh growth after application.

• Growth regulation: trials and experience has shown that a programmed approach is the best way to reduce lodging risk in varieties which are more prone.

• An ethephon-based T2 application will be beneficial for height reduction, in turn reducing the centre of gravity of the crop.

• Limited rainfall and high diurnal temperatures have resulted in crop stress. Assess the requirement for late season growth regulation. Reduce the rates of ethephon-based growth regulators at the GS37-39 timing if crops are stressed to avoid over-regulation.

• Growth regulation: experience has shown that a programmed approach is the best way to reduce lodging risk in varieties which are more prone.

• Be aware that crops have typically reached only half of their final height by GS39 and that hybrid barley varieties are typically taller than conventional varieties.

• Check for crop stress, especially if conditions are dry, and assess the requirement for late season growth regulation. Consider digging down into the soil to establish if the roots are still in moisture.

• Reduce the rates of ethephon-based growth regulators at the GS37-39 timing if crops are stressed.

• Monitor disease levels in crops and adjust fungicide programmes according to local risk, variety, and disease pressure. T2 is the key timing for Ramularia control.

• Apply appropriate fungicides at T2 to control disease and to protect fresh growth after application, for example, ELATUS Era (if not already used at T1) together with a multi-site like folpet to enhance Ramularia protection.

wheat decision tree

 

https://www.syngenta.co.uk/winter-wheat-t2-decision-tree

 

Key agronomy for hybrid barley 

• Growth regulation: experience has shown that a programmed approach is the best way to reduce lodging risk in varieties which are more prone.

• Be aware that crops have typically reached only half of their final height by GS39 and that hybrid barley varieties are typically taller than conventional varieties.

• Check for crop stress, especially if conditions are dry, and assess the requirement for late season growth regulation. Consider digging down into the soil to establish if the roots are still in moisture.

• Reduce the rates of ethephon-based growth regulators at the GS37-39 timing if crops are stressed.

• Monitor disease levels in crops and adjust fungicide programmes according to local risk, variety, and disease pressure. T2 is the key timing for Ramularia control.

• Apply appropriate fungicides at T2 to control disease and to protect fresh growth after application, for example, ELATUS Era (if not already used at T1) together with a multi-site like folpet to enhance Ramularia protection.

fungicide programme