Nematicide influence on cotton yield and plant-parasitic nematodes in conventional and sod-based crop rotation

Schumacher, Lesley A.; Grabau, Zane J.; Wright, David L.; Small, Ian M.; Liao, Hui-Ling

Nematicide influence on cotton yield and plant-parasitic nematodes in conventional and sod-based crop rotation

Journal of Nematology

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

By:

Lesley A. Schumacher, Zane J. Grabau, David L. Wright, Ian M. Small and Hui-Ling Liao

Open Access

|Apr 2020

Figures & Tables

Reniform nematode (Rotylenchulus reniformis) population density (nematodes/100 cm3 soil) as influenced by crop phase in 2017 and 2018 soil samples. CS is the cotton phase of the sod-based rotation, C1 is first-year conventional cotton, and C2 is second-year conventional cotton. Different letters denote significant differences between crop phases (Fisher’s protected LSD, p ≤ 0.05).

Ring nematode (Mesocriconema ornatum) population density (nematodes/100 cm3 soil) as influenced by crop phase in 2017 and 2018 soil samples. CS is the cotton phase of the sod-based rotation, C1 is first-year conventional cotton, and C2 is second-year conventional cotton. Different letters denote significant differences between crop phases (Fisher’s protected LSD, p ≤ 0.05).

Spiral nematode (Helicotylenchus dihystera) population density (nematodes/100 cm3 soil) as influenced by nematicide application in 2017 and 2018 soil samples. With nematicide and without nematicide refer to the absence or presence of fluopyram, respectively. *indicates significant nematicide effect within the given season (p ≤ 0.05).

Cotton seed yield (kg/ha) in 2017 and 2018. CS is the cotton phase of the sod-based rotation, C1 is first-year conventional cotton, and C2 is second-year conventional cotton. With nematicide and without nematicide refer to absence or presence of fluopyram, respectively. Different letters denote significant differences between nematicide treatments within crop phase (Fisher’s protected LSD, p ≤ 0.05).

Crop phase for bahiagrass, peanut, and cotton during 2016 to 2019a_

Phase number	Rotation	2016	2017	2018	2019
1	Conventional	P	C1	C2	P
2	Conventional	C1	C2	P	C1
3	Conventional	C2	P	C1	C2
4	Bahiagrass	CS	B1	B2	PS
5	Bahiagrass	B1	B2	PS	CS
6	Bahiagrass	B2	PS	CS	B1
7	Bahiagrass	PS	CS	B1	B2

Cotton planting, nematode sampling, cotton harvest, and irrigation dates in 2017 and 2018_

	2017	2018
Cotton planting	April 28	April 27
Soil sampling^a
Preplant (Pi)	April 13	April 19
Midseason (Pm)	June 19	June 22
Harvest (Pf)	September 25	September 25
Root sampling	June 19	June 22
Cotton harvest	October 17	October 8
Irrigation events^b	May 10	May 12
	July 5	June 26
	August 2	July 12
	August 25	July 18

Effects of irrigation, crop phase, and nematicide application on Mesocriconema ornatum and Helicotylenchus dihystera in 2017 and 2018_

Mesocriconema ornatum population density
		2017				2018
	Pi^a	Pm	Pf	Rf	Pi	Pm	Pf	Rf
ANOVA (p values)
Irrigation (I)	0.14	0.19	0.29	0.96	< 0.01**	0.43	0.97	0.76
Crop phase (C)	< 0.01**	0.02*	< 0.01**	0.21	< 0.01**	0.05*	0.76	0.03*
I × C	0.04*	0.72	0.30	0.32	0.58	0.84	0.88	0.76
Nematicide (N)	0.71	0.66	0.53	0.81	0.31	0.22	0.30	0.13
I × N	0.68	0.42	0.15	0.98	0.78	0.10	0.27	0.74
C × N	0.97	0.54	0.52	0.55	0.15	0.42	0.97	0.13
I × C × N	0.34	0.87	0.63	0.42	0.99	0.25	0.55	0.76
Helicotylenchus dihystera population density
		2017				2018
	Pi^a	Pm	Pf	Rf	Pi	Pm	Pf	Rf
ANOVA (p values)
Irrigation (I)	0.33	0.60	0.93	0.31	0.06	0.28	0.22	0.36
Crop phase (C)	0.56	0.03*	0.19	0.90	0.07	0.15	0.04*	0.43
I × C	0.85	0.34	0.98	0.60	0.57	0.50	0.56	0.39
Nematicide (N)	0.02*	0.10	< 0.01**	0.75	0.02*	0.01**	< 0.01**	0.42
I × N	0.07	0.64	0.52	0.39	0.57	0.44	0.03*	0.50
C × N	0.42	0.01**	0.06	0.25	0.25	0.06	0.02*	0.28
I × C × N	0.64	0.09	0.29	0.37	0.40	0.15	0.09	0.24

Effects of irrigation, crop phase, and nematicide application on cotton seed yield and lint yield (kg/ha)_

	2017^a		2018
	Seed yield	Lint yield	Seed yield	Lint yield
ANOVA (p values)
Irrigation (I)	0.50	0.32	0.06	0.31
Crop phase (C)	0.01**	0.01**	0.19	0.41
I × C	0.64	0.72	0.53	0.62
Nematicide (N)	< 0.01**	< 0.01**	0.03*	0.06
I × N	0.81	0.79	0.40	0.65
C × N	0.01**	0.09	0.05*	0.07
I × C × N	0.45	0.58	0.07	0.22

Effects of irrigation, crop phase, and nematicide application on Rotylenchulus reniformis in 2017 and 2018_

Total Rotylenchulus reniformis population density
	2017				2018
	Pi^a	Pm	Pf	Rf	Pi	Pm	Pf	Rf
ANOVA (p-values)
Irrigation (I)	0.76	0.75	0.61	0.61	0.27	0.49	0.25	0.21
Crop phase (C)	< 0.01**	< 0.01**	< 0.01**	0.02*	< 0.01**	< 0.01**	< 0.01**	< 0.01**
I × C	0.35	0.46	0.02*	0.79	0.05*	0.82	0.39	0.16
Nematicide (N)	0.96	0.47	0.13	0.78	0.01**	0.22	0.13	0.78
I × N	0.89	0.70	0.22	0.62	0.10	0.72	0.53	0.16
C × N	0.18	0.75	0.84	0.50	0.29	0.90	0.74	0.41
I × C × N	0.67	0.80	0.65	0.90	0.18	0.84	0.53	0.34
Ratio of Rotylenchulus reniformis immature females and juveniles: males
	2017				2018
	Pi^a	Pm	Pf		Pi	Pm	Pf
ANOVA (p-values)
Irrigation (I)	0.11	0.34	0.15		0.11	0.46	0.19
Crop phase (C)	0.05*	0.18	0.01**		0.02*	0.28	0.03*
I × C	0.93	0.38	0.92		0.10	0.36	0.43
Nematicide (N)	0.95	0.61	< 0.01**		0.40	0.56	0.75
I × N	0.18	0.84	0.08		0.37	0.43	0.95
C × N	0.87	0.50	0.02*		0.72	0.64	0.83
I × C × N	0.97	0.37	0.06		0.43	0.73	0.94

DOI: https://doi.org/10.21307/jofnem-2020-034 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X

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Language: English

Page range: 1 - 14

Submitted on: Oct 10, 2019

Published on: Apr 16, 2020

Published by: Society of Nematologists, Inc.

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

Cotton,

Plant-parasitic nematodes,

Ring,

Related subjects:

© 2020 Lesley A. Schumacher, Zane J. Grabau, David L. Wright, Ian M. Small, Hui-Ling Liao, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.

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Nematicide influence on cotton yield and plant-parasitic nematodes in conventional and sod-based crop rotation

Figures & Tables

Figure 1:

Figure 2:

Figure 3:

Figure 4:

Crop phase for bahiagrass, peanut, and cotton during 2016 to 2019a_

Cotton planting, nematode sampling, cotton harvest, and irrigation dates in 2017 and 2018_

Effects of irrigation, crop phase, and nematicide application on Mesocriconema ornatum and Helicotylenchus dihystera in 2017 and 2018_

Effects of irrigation, crop phase, and nematicide application on cotton seed yield and lint yield (kg/ha)_

Effects of irrigation, crop phase, and nematicide application on Rotylenchulus reniformis in 2017 and 2018_

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