IN INOCULANTS Nodulaid - 17th International Nitrogen Fixation ...

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17 th International Congress on Nitrogen Fixation Fremantle, Western Australia 27 November – 1 December 2011 Session Details: Monday 28 November 2011 Author: Concurrent Session 1 – Field Applications 1 1530 - 1650 Neil Ballard Global Pasture Consultants, Australia Presentation Title: Application of Western Australian legume and Rhizobium technologies in the developing world – a practitioner‟s perspective Presentation Time: 1530 - 1550 Western Australia has been at the leading edge of developing alternative pasture legumes and their rhizobial inoculants for infertile soils since the early 1990s. Using knowledge gained from applying these technologies to farming in WA on projects overseas has given me an understanding of the differences in agriculture in other countries, as well as the opportunities. It has also enabled me to help to show the farmers in those countries how the WA experience can help them to be more productive and more efficient. The widespread adoption of no till farming since the 1970‟s in WA is an object lesson for many other low rainfall countries to grow crops and pastures with minimum moisture loss. When this is coupled with the use of a wide range of pasture species and an understanding of the importance of developing hard seed banks, it opens up a completely new range of options for these farmers and communities, to produce the quantity and quality of forage they have never seen before. The Centre for Rhizobium Studies at Murdoch University at Murdoch University in Western Australia has been able to develop elite strains of Rhizobia to suit the range of forage species we have used in the overseas experience, and these have been critical to success. My presentation will cover application of these new technologies which have the potential to greatly increase productivity on marginal soils in developing countries. The role of sociology in implementing these technologies will be emphasised, beginning with the ACIAR funded project ECCAL in the eastern Cape of South Africa. 22 2011
17 th International Congress on Nitrogen Fixation Fremantle, Western Australia 27 November – 1 December 2011 Session Details: Monday 28 November 2011 Concurrent Session 1 – Field Applications 1 1530 - 1650 Authors: Malik R, Seymour M Presentation Title: Presentation Time: 1550 - 1610 Department Of Agriculture & Food Western Australia, Impact of break crops on wheat productivity in Western Australian cropping system Cropping systems in Western Australia have become more intensive over the past 20 years – meaning there is more cereal after cereal, less lupin and pastures, but more canola. Each year farmers decide what crop to grow based on previous history and experience and market outlooks. So, what farmers often actually want to know is “what is the best crop to sow after the last one or two?” – I.e. what is the best crop sequence? Dynamic Crop Sequence trial at Katanning WA approaches this question, amongst others, in a different way. The trial is consisted of a range of cropping component options being grown in long plots in one direction in the first year (2008), and at right angles in the second year (2009) crossing all the first year plots. This allows the comparison of all possible two-year combinations (total 100) of those components. In the third year (2010) wheat was grown across the entire site. The results suggested that both 2008 and 2009 treatments had significant effects on third year wheat yield. The 2008 treatments leading to highest wheat yields were canola, fallow, field pea, lupin, and oaten hay; and the 2009 treatments leading to highest wheat yields were fallow, lupin and oaten hay. Not surprisingly, the second year effect of the 2008 treatments on 2010 wheat yield were smaller than the first year effects of the 2009 treatments. The only 2009 break crop that increased 2010 wheat yield significantly above wheat/wheat was lupin (wheat yield after lupin was 27% higher). This research can help identify crop sequence „synergisms‟ and „antagonisms‟, thereby providing the necessary foundation for developing strategies to sequence crops over a longer period of time as a long-term strategy of annual crop sequencing to attain production, economic, and resource conservation goals by using sound management practices. 23 2011
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