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Slide 1 Presented by: Charlie Walker Product Innovation Manager Innovations For Environmentally Sound Nutrient Management Green Urea.

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Presentation on theme: "Slide 1 Presented by: Charlie Walker Product Innovation Manager Innovations For Environmentally Sound Nutrient Management Green Urea."— Presentation transcript:

1 Slide 1 Presented by: Charlie Walker Product Innovation Manager Innovations For Environmentally Sound Nutrient Management Green Urea

2 Slide 2 Reduction of: –run off of water soluble phosphorus –leaching, denitrification & volatilisation of nitrogen Are all achievable in a perfect world using existing products……. But are they logistically achievable? They are now………. Better Nutrient Management = Better Nutrient Efficiency = Higher Returns to Farmers

3 Slide 3 Biophos TM An alternate phosphorus product The problem: - losses from water soluble surface applied P - ineffective organic based P fertilisers The cause: - high solubility of conventional fertilisers increase losses in surface run off - organic P sources little or no plant available P The cure: Biophos TM - organic compost using native soil fungi to mimic conventional fertiliser process

4 Slide 4 Figure 1: Comparative effect of Superphosphate and Biophos on annual irrigated pasture dry matter production at Tatura Year 1Year 2Year 3 Year Dry matter production (t/ha) Control (no P) Biophos Superphosphate l.s.d = l.s.d = l.s.d = Dry matter production of clover ryegrass pasture after three seasons at Tatura

5 Slide 5 The problem: - leaching losses of nitrate nitrogen - gaseous losses of nitrous oxide The cause: - rapid nitrification of ammonium based fertilisers into nitrate The cure: - suppression of Nitrosomonas spp in the soil - ammonium nutrition The new nitrogen technology

6 Slide At sowingDC31 Timing Fert N recovery % Relative wheat yield % Fert N recovery EntecFert N recovery No Entec Relative yield EntecRelative yield No Entec Interaction between treatment & N application timing at 3 sites in SE Australia 2004

7 Slide 7 Economic reduction in urea volatilisation The problem: - Significant losses of surface applied urea to atmosphere under certain conditions The cause: - Urease enzyme activity leading to volatilisation - Lag time between application and incorporation The cure: - Enzyme suppression to delay hydrolysis of urea - Extra time for incorporation of urea by rain, irrigation or cultivation. Green Urea

8 Slide 8 Volatilisation Experiments

9 Slide 9


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