Yield trends under varying environmental conditions for sorghum and wheat across Australia

Research Gate - Potgieter, Andries & B Lobell, David & Hammer, G & Jordan, David & Davis, Peter & Brider, Jason

Type: Research Paper
Knowledge level: Advanced

Farm Table says:

This research article looks at yield trends under varying environmental conditions for sorghum and wheat across Australia. Interesting information if you grow sorghum and want to look further into its importance to food production.

What is the problem?

• Food production is being exposed to increased climatic and market volatility.
• The trend in sorghum yield in Australia has been consistent and positive over the last 30 years,
• globally trends for other cereals like wheat, maize, and rice have slowed.

What did the research involve?

This study examines sorghum and wheat yield trends over the previous three to four decades in Australia after realistically accounting for the effects of year-to-year climate variability. We quantified the yield trends within three distinct types of crop stress environments.

What were the key findings?

Overall trends in sorghum yields were 2.1% per year (44 kg/ha/year), which was nearly double that found for wheat (1.2% per year; 21 kg/ha/year).

Final comment

However, in dry environments, relative yield trends for sorghum were 3.6 times those for wheat, whereas in wet environments trends were similar. Likely technology and environmental factors underpinning these trends are discussed.

2016 - Australia - Research Gate - Potgieter, Andries & B Lobell, David & Hammer, G & Jordan, David & Davis, Peter & Brider, Jason
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