<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Easter lily bulbs for greenhouse forcing are produced in Del Norte County, California and Curry County, Oregon, USA. <italic>Pratylenchus penetrans</italic> infestation seriously affects growth of field grown bulbs. During two consecutive years of field trials containing 22 treatments, commercially prepared formulations of essential oils (EOs) were compared to an untreated control and to a standard chemical fumigant treatment (FU) (1,3-dichloropropene and metam sodium) applied preplant followed by phorate (PH) at planting to determine their value in the management of lesion nematode, and in improving plant health. The EO products Duogard, EF400, EF300, and Cinnamite were tested as preplant dips to bulblet planting stock. The treated bulblets were tested either alone, in combination with PH at-planting, at planting following FU or in combination with PH at planting following FU. The organophosphates ethoprop and fosthiazate were also tested either alone, or at a reduced rate in combination with a reduced rate of PH. With respect to bulb circumference, ten treatments consistently outperformed the control. In consecutive years, three treatments had healthier looking roots than the control. At harvest, levels of lesion nematode within roots were consistently lower in nine treatments. EOs were beneficial in mitigating nematode damage.</p>
</abstract>

Easter lily bulbs for greenhouse forcing are produced in Del Norte County, California and Curry County, Oregon, USA. Pratylenchus penetrans infestation seriously affects growth of field grown bulbs. During two consecutive years of field trials containing 22 treatments, commercially prepared formulations of essential oils (EOs) were compared to an untreated control and to a standard chemical fumigant treatment (FU) (1,3-dichloropropene and metam sodium) applied preplant followed by phorate (PH) at planting to determine their value in the management of lesion nematode, and in improving plant health. The EO products Duogard, EF400, EF300, and Cinnamite were tested as preplant dips to bulblet planting stock. The treated bulblets were tested either alone, in combination with PH at-planting, at planting following FU or in combination with PH at planting following FU. The organophosphates ethoprop and fosthiazate were also tested either alone, or at a reduced rate in combination with a reduced rate of PH. With respect to bulb circumference, ten treatments consistently outperformed the control. In consecutive years, three treatments had healthier looking roots than the control. At harvest, levels of lesion nematode within roots were consistently lower in nine treatments. EOs were beneficial in mitigating nematode damage.

Essential oils for managing <italic>Pratylenchus penetrans</italic> on Easter lilies

Journal of Nematology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Essential oils for managing  on Easter lilies

running-head

Easter lily bulbs for greenhouse forcing are produced in Del Norte County, California and Curry County, Oregon, USA. Pratylenchus penetrans infestation...

Essential oils for managing Pratylenchus penetrans on Easter lilies

Published Online: Mar 17, 2020

Page range: 1 - 7

Received: Oct 12, 2019

DOI: https://doi.org/10.21307/jofnem-2020-010

Keywords
1,3-dichloropropene, Cinnamite, Duogard, EF300, EF400, Easter lily, Essential oils, Ethoprop, Fosthiazate, Lesion nematode, Management, Metam sodium, Phorate,

© 2020 B. B. Westerdahl et al., published by Sciendo.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Essential oils for managing Pratylenchus penetrans on Easter lilies

Published Online: Mar 17, 2020

Page range: 1 - 7

Received: Oct 12, 2019

DOI: https://doi.org/10.21307/jofnem-2020-010

Keywords1,3-dichloropropene, Cinnamite, Duogard, EF300, EF400, Easter lily, Essential oils, Ethoprop, Fosthiazate, Lesion nematode, Management, Metam sodium, Phorate,

© 2020 B. B. Westerdahl et al., published by Sciendo.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
1,3-dichloropropene, Cinnamite, Duogard, EF300, EF400, Easter lily, Essential oils, Ethoprop, Fosthiazate, Lesion nematode, Management, Metam sodium, Phorate,