‘IPM could be key to reducing chemical usage’

2017-07-14     Source: agriland
Integrated Pest Management (IPM) is a strategy used to control pests and diseases in crops and Teagasc’s Brian Duggan believes that it could be a key disease-control measure in the future.

Duggan spoke at last week’s Crops and Cultivation event in Teagasc Oak Park, Co. Carlow.

He said: “IPM is the combined strategy of using preventative, cultural, mechanical, biological and, lastly, chemical methods, if all else fails.

“We should be looking to control eyespot in wheat, ramularia in barley, potato late blight, cereal aphids and the cabbage root fly through IPM.”

According to Teagasc’s Eamonn Lynch, it’s important to consider IPM as some pests are developing resistance to chemicals.

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An IPM-approach can give direct benefits to farmers through the regular monitoring of the presence of pests. This means that farmers can act on observations made in the fields, as opposed to “swinging blindly”.

Teagasc says that a dependence on one method of control can prove “costly”.

The research body is currently leading projects investigating disease and pest control; cultural methods of control; and farmers’ attitudes to IPM.

The number of pesticide-resistance cases in Ireland is on the increase, according to Teagasc. This, coupled with the fact that the availability of chemical actives is declining, means that a significant challenge exists for tillage farmers trying to control pests effectively into the future.

Putting IPM Into Practice

The grain aphid, which spreads barley yellow dwarf virus (BYDV), feeds on the grain head and can become resistant to pesticides, Teagasc’s Robyn Earl said.

Aphids can be controlled through biological methods, he added.

All of the above’s larvae feed on the aphid.

These natural enemies of the aphid can be encouraged to thrive near crops if a certain amount of land on the field margin is left to go wild. A natural habitat is then provided for these predators of the aphid, Earl concluded.

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