Sorghum yield trends in NE Australia are high

Potgieter, Andries (2013). Sorghum yield trends in NE Australia are high. In: ASGC 2013: Australian Summer Grains Conference, Ashmore, QLD, Australia, (). 17-19 June, 2013.

Author Potgieter, Andries
Title of paper Sorghum yield trends in NE Australia are high
Conference name ASGC 2013: Australian Summer Grains Conference
Conference location Ashmore, QLD, Australia
Conference dates 17-19 June, 2013
Publication Year 2013
Sub-type Published abstract
Open Access Status
Language eng
Formatted Abstract/Summary
There is concern that rate of yield gain for major cereal crops (wheat, rice) is declining and this exacerbates concerns about global food security. At the same time sorghum production in Australia has become a more favourable option across the summer dominated rainfall regions of Australia. Here we set out to determine the trend in sorghum yield during the previous three decades across shires of north-eastern Australia. Since rainfall variability is the main causal factor in sorghum yield variability from year-to-year this effect was removed using a seasonal adjustment approach based on regional scale modelling. At national level, yield trends were flat up to the late 1990s, but positive trends were observed after this period to the present, with yield gains averaging better than 2% per annum. This is among the highest levels of crop yield advance globally. In addition, no significant trends have occurred in summer rainfall over this period, which supports the contention that the increase is due to improved technologies associated with varietal improvement and agronomic practice.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Authors prepub title: "Australian sorghum yield trends are high".

Document type: Conference Paper
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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Created: Fri, 11 Apr 2014, 10:25:21 EST by Dr Andries Potgieter on behalf of Centre for Plant Science