Essential oils for managing Pratylenchus penetrans on Easter lilies

		Bulblet dip (d),	ap, pp
	Preplant	At planting (ap), or	Rate
Abbreviation^a	Treatment (FU)	Post plant (pp)	kg a.i./ha^b
FUPH9	Yes	Phorate (ap)	9
FUET13	Yes	Ethoprop (ap)	13.4
FU	Yes	none	None
FUDUPH9	Yes	DuoGard (d) Phorate (ap)	9
FUDU	Yes	DuoGard (d)	None
FUEF4PH9	Yes	EF400 (d) Phorate (ap)	9
FUEF4	Yes	EF400 (d)	None
FUEF3PH9	Yes	EF300 (d) Phorate (ap)	9
FUEF3	Yes	EF300 (d)	None
FUPH5FO	Yes	Phorate (ap) Fosthiazate (ap)	4.5–4.4
FUPH5ET8	Yes	Phorate (ap) Ethoprop (ap)	4.5–7.8
FUFO2X	Yes	Fosthiazate (ap) (pp)	4.4–4.4
FUCIPH9	Yes	Cinnamite (d) Phorate (ap)	9
FUCI	Yes	Cinnamite (d)	None
CIPH9	No	Cinnamite (d) Phorate (ap)	9
CI	No	Cinnamite (d)	None
PH5FO	No	Phorate (ap) Fosthiazate (ap)	4.5–4.4
PH5ET8	No	Thimet (ap) Ethoprop (ap)	4.5–7.8
FO2X	No	Fosthiazate (ap) (pp)	4.4–4.4
PH9	No	Phorate (ap)	9
ET13	No	Ethoprop (ap)	13.4
UC	No	None	None

1 Notes: ^aFU = Preplant treatment of 1,3-Dichloropropene at 428 kg a.i./ha plus metam sodium at 407 kg a.i./ha; ^bkg a.i./ha is expressed as the amount of product that was actually applied.

Table 2.

Effect of treatments on bulb circumference and root health.

	Bulb circumference (cm)		Root rating^a
Treatment	Trial 1	Trial 2	Trial 1	Trial 2
FUPH9	14.0	13.6*	5.7	4.3
FUET13	14.1	14.3*	6.3*	3.7
FU	14.1	14.2*	4.3	5.7
FUDUPH9	14.6*	14.3*	4.7	4.3
FUDU	14.7*	14.4*	4.3	5.3
FUEF4PH9	14.5*	14.1*	5.2	5.3
FUEF4	14.9*	14.6*	3.3	6.3*
FUEF3PH9	14.6*	14.2*	4.0	6.3*
FUEF3	14.7*	14.2*	4.3	5.3
FUPH5FO	14.6*	13.6*	7.0*	7.3*
FUPH5ET8	14.6*	13.7*	5.3	7.0*
FUFO2X	14.2	14.0*	6.3*	6.8*
FUCIPH9	14.5*	14.1*	7.3*	6.0*
FUCI	14.7*	14.0*	6.7*	5.7
CIPH9	14.6*	13.0	7.0*	4.8
CI	14.5*	12.2	7.0*	3.0
PH5FO	14.4*	13.5	7.7*	4.7
PH5ET8	13.9	13.1	6.3*	4.3
FO2X	13.7	13.6*	6.3*	4.7
PH9	13.1	13.3	4.7	5.7
ET13	13.4	13.6*	5.3	4.3
UC	13.4	12.8	4.0	3.7
LSD	0.927	0.744	1.990	2.085

1 Notes: Data are means of three replicates. *Significantly different from UC at p ≤ 0.05; ^aroot rating was subjective on a scale from 1 = poor to 10 = healthy looking.

Table 3.

Effects of treatments on survival and growth of Easter lilies.

			Foliage Weight		Bulblet Weight
	Bulb survival (%)^a		(5 plants) (g)		(5 plants) (g)
Treatment	Trial 1	Trial 2	Trial 1	Trial 2	Trial 1	Trial 2
FUPH9	98	96*	111.3	129.3*	2.9*	2.7
FUET13	96	87	137.3*	117.3*	2.7	2.4
FU	94	93	93.3	102.7*	2.1	3.1*
FUDUPH9	100	95	103.3	96.7*	2.4	2.8*
FUDU	93	97*	142.0*	122.0*	3.3*	2.9*
FUEF4PH9	96	91	124.0	91.3*	3.2*	3.0*
FUEF4	95	100*	100.7	110.7*	2.3	2.7
FUEF3PH9	95	89	122.0	132.0*	3.6*	2.7
FUEF3	98	95	118.7	104.0*	2.6	4.4*
FUPH5FO	94	91	126.3	111.3*	2.2	3.3*
FUPH5ET8	96	94	128.0	104.0*	2.3	3.3*
FUFO2X	96	96	120.3	119.3*	2.2	2.7
FUCIPH9	72*	94	133.3*	107.3*	2.5	3.2*
FUCI	96	96*	118.7	96.0*	3.2*	2.9*
CIPH9	95	85	147.7*	73.3	3.3*	1.5
CI	94	87	122.7	56.7	2.2	1.5
PH5FO	96	90	142.0*	95.3*	2.0	2.6
PH5ET8	91	86	132.0*	65.3	1.9	1.9
FO2X	92	88	109.7	103.3*	1.7	3.3*
PH9	90	92	91.3	88.7*	2.0	2.4
ET13	92	90	106.0	97.3*	1.6	2.6
UC	95	87	95.0	52.7	1.5	1.3
LSD	13.785	9.287	36.157	33.182	1.251	1.436

1 Notes: Data are means of 3 replicates. ^aBulb survival out of 75 planted per replicate; ^*significantly different from UC at p ≤ 0.05.

Table 4.

Effect of treatments on densities of Pratylenchus penetrans in soil and roots.

	Pratylenchus penetrans
	Soil (n/1,000 cm)³		Roots (n/g)
Treatment	Trial 1	Trial 2	Trial 1	Trial 2
FUPH9	16.7*	16.7	51.6*	16.5*
FUET13	116.7	33.3	42.2*	7.3*
FU	283.3	133.3	131.2	70.5*
FUDUPH9	300.0	16.7	72.9	10.6*
FUDU	283.3	66.7	63.9*	53.0*
FUEF4PH9	116.7	33.3	29.3*	15.5*
FUEF4	183.3	66.7	194.5	63.8*
FUEF3PH9	183.3	0.0	140.7	46.4*
FUEF3	333.3	50.0	250.9	33.9*
FUPH5FO	66.7	33.3	29.7*	0.5*
FUPH5ET8	150.0	50.0	56.9*	31.5*
FUFO2X	33.3*	0.0	18.3*	0.4*
FUCIPH9	33.3	16.7	21.2*	45.2*
FUCI	250.0	100.0	224.3	44.3*
CIPH9	350.0	33.3	230.8	175.2
CI	333.3	66.7	150.6	121.4
PH5FO	16.7*	33.3	16.4*	53.7*
PH5ET8	200.0	50.0	72.7	103.3
FO2X	83.3	16.7	75.0	29.7*
PH9	250.0	166.7	117.7	120.7
ET13	200.0	50.0	355.0	116.8
UC	266.7	133.3	256.2	157.4
LSD	319.6	135.136	185.75	72.328

1 Notes: Data are means of three replicates. ^*Significantly different from UC at p ≤ 0.05.

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Articles in this issue

DOI: https://doi.org/10.21307/jofnem-2020-010 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X

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Language: English

Page range: 1 - 7

Submitted on: Oct 12, 2019

Published on: Mar 17, 2020

Published by: Society of Nematologists, Inc.

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

1,3-dichloropropene,

Cinnamite,

Duogard,

EF300,

EF400,

Phorate,

Pratylenchus penetrans.

Related subjects:

Life sciences,

Life sciences, other

© 2020 B. B. Westerdahl, D. Giraud, L. J. Riddle, C. A. Anderson, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 52 (2020): Issue 1 (January 2020)