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Daniel brennan poster

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A brief summary of my 2010 research project.

A brief summary of my 2010 research project.

Published in: Technology
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  • 1. Evaluation of the benefits of seaweed foliage sprays on Sauvignon blanc vine & berry health<br />Daniel P. Brennan <br />Eastern Institute of Technology Taradale, Napier, New Zealand<br />Introduction:<br />A comparison between two commercial foliar seaweed sprays on Hawkes Bay Sauvignon blanc. The two products, Agrisea© New Zealand's Ecklonia Radiata species and Acadian© Agritech'sAscophyllum nodosum were trialed against a Control. Each product is made from different seaweeds originating in different areas of the world and claim benefits and advantages to their seaweeds and production techniques. <br />What was done:<br /><ul><li>The trial was set up at Villa Maria’s Joseph Soler Vineyard which is certified Biogrow® New Zealand.
  • 2. The trial block was VitisviniferaL cv. Sauvignon blanc on its own rootstock
  • 3. Fruit was analysed for harvest parameters (pH, TA, soluble solids ), berry weight, berry number, and bunch weight
  • 4. No crop thinning was performed on any of the vines
  • 5. A percentage of Botrytis rot was scored for every bunch in the trial per the following system:</li></ul>What was found:<br /><ul><li>The Acadian© Agritech'sAscophyllum nodosum scored significantly better in Botrytis rot than the Agrisea© New Zealand's Ecklonia Radiata and the Control
  • 6. There was no significant difference in harvest parameters, berry weight, berry numbers and bunch weight between the Treatments.
  • 7. The Acadian© product scored consistently lower soluble solids and pH while having consistently a higher TA than the other Treatments.</li></ul>A<br />C<br />B<br />This figure shows examples of the different percentages of Botrytis rot on Hawkes Bay Sauvignon Blanc per this trial:<br />A = 3%<br />B = 5%<br />C = 10%<br />D = 30%<br />E = 50%<br />D<br />E<br />Conclusions:<br /><ul><li>While the difference was not significant, the Acadian© Agritech'sAscophyllum nodosum scored consistently behind in maturity levels than the Agrisea© New Zealand's Ecklonia Radiata and the Control
  • 8. Crop loss due to Botrytis rot was significantly reduced when using Acadian© Agritech'sAscophyllum nodosum compared with other Treatments </li>

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