Can N mitigate adverse effects of elevated temperature in wheat?

1.Mariano Cossani1, Daniel Cozzolino2, Victor Sadras1

1South Australian Research and Development Institute

2RMIT University

Abstract:

Delaying sowing reduced yield potential at 0.67 t/ha per °C of mean temperature during critical period for yield determination (20 days pre-10 days post anthesis). Good N nutrition and longer-season spring cultivars reduced the yield gaps in relation to temperature. Responses to N become more erratic when temperatures during the critical period increase above ~14.5 °C. Strategic N management (50-100 kg N/ha) may help to mitigate the effect of higher temperatures on grain number and yield.

Host

The Australian Society of Agronomy is the professional body for agronomists in Australia. It has approximately 500 active members drawn from government, universities, research organisations and the private sector.

Photo Credits

David Marland Photography david_marland@hotmail.com Graham Centre for Agricultural Innovation, Charles Sturt University

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