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A Curtin University PhD student study has found wheat quality and grain yields were increased by adding nitrogen fertiliser to crops grown in high rainfall zones (HRZ) but low nutritional soils. This challenges conventional thought about grain quality in this type of environment.<\/p>\n
Darren Hughes, 30, whose research was supported by Curtin\u2019s Department of Environment and Agriculture and Kalyx Agriculture, tested eight wheat varieties at two high rainfall sites in Western Australia using three Nitrogen fertiliser regimes.<\/p>\n
Results showed that environment (i.e. the effect of site and season) accounted for almost 90 per cent of the variation for grain yield, and influenced some quality characteristics including screenings, falling number and milling yield.\u00a0<\/p>\n
\u201cIt was the nitrogen management regime adopted to counteract the effects of farm location and season that was found to be the principal source of variation for grain quality, including grain protein, dough strength and water absorption,\u201d Mr Hughes said.<\/p>\n
\u201cIt was also found that the variety of wheat used, or \u2018cultivar,\u2019 was the major source of variation for dough strength and dough stability, but, surprisingly had only a small affect on grain yield and grain protein.\u201d<\/p>\n
The results indicated when nitrogen fertiliser use was increased, all wheat varieties produced grain of acceptable quality for their grades and yields also increased.<\/p>\n
The land use change from traditional livestock to annual cropping enterprises in the HRZ of WA\u2019s South-West region over the past 10 years, has meant that high grain yields based on seasonal rainfall were often not achieved because of inadequate nutrition and other constraints such as water-logging and disease.<\/p>\n
\u201cThis is very valuable research for wheat growers in WA\u2019s high rainfall zones,\u201d said his thesis supervisor and Professor Robert Belford.<\/p>\n
\u201cRealising the impact of nutrition management on quality characteristics in the HRZ of WA will be a positive step towards a sustainable industry,\u201d Professor Belford said.<\/p>\n
Mr Hughes was the first student to complete a PhD after entering Curtin from Morawa Agricultural School and is now the Research and Development Manager at Adveco Fertilisers in NSW, which he secured before completing his thesis.<\/p>\n
\u201cConducting original research and producing meaningful results for the grains industry is very satisfying,\u201d he said.<\/p>\n
\u201cStudying at Curtin helped me develop the research abilities required to undertake this kind of role.\u201d<\/p>\n
Contacts:\u00a0<\/p>\n
Professor Robert Belford, School of Environment and Agriculture, Curtin Dr Darren Hughes, Research and Development Manager, Adveco Fertilisers
\nTel: 08 9690 1567, Mobile: 0417 987 642, Email: r.belford@curtin.edu.au<\/a><\/p>\n
\nTel: 0425 845 425, Email: dhughes@adveco.com.au<\/a><\/p>\n