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Seed-based webinar follow-up #19 Can you expand on the seeding method ...
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5/4/2017 at 9:21:59 AM GMT
Posts: 38
Seed-based webinar follow-up #19 Can you expand on the seeding method ...

Seed-based webinar follow-up #19

Can you expand on the seeding method where Todd showed germination for seeds placed at about 5 mm versus “sown on the surface”, with little or no success for the “sown on surface” treatment? In my work, typically, broadcast seeding is followed by chain dragging or harrowing to lightly cover the seed.  Did the seeding include a treatment to cover the broadcast seed? Have you compared drill seeding, dry broadcast and hydraulic applications, and, if so, can you discuss general preferences for seeding methods using native species?

Directed to: Todd



5/4/2017 at 9:45:50 AM GMT
Posts: 38
Todd's reply:

Current seeding practices in the Pilbara broadcast seeds onto the soil surface immediately after ripping the reconstructed soil profile with a dozer tyne. This practice is employed by the industry to allow the incorporation of seeds in the upper soil layer as the soil settles (no harrowing or chains are used). We have made no large-scale comparisons with different broadcasting versus direct seeding pre-treatments to date. Our research in the rain manipulation shelter comparing the ‘precision sown’ at 3-5mm versus seeds left on the surface highlights this need incorporate seeds into the soil whereby we have demonstrated a significant increase in seedling emergence occurs once below the soil surface. In the next few years we plan to compare various direct and broadcast seeding options with our agricultural engineering research collaborations (on-going funding until 2021 has just been confirmed).


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