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

<p>A three-year rotation of cotton (<italic>Gossypium hirsutum</italic>) cultivars either resistant (R) or susceptible (S) to <italic>Rotylenchulus reniformis</italic> and fallow (F) was examined for effect on cotton yield and nematode density. In year 1, 2, and 3, the resistant cultivar (DP 2143NR B3XF) yielded 78, 77, and 113% higher than the susceptible cultivar (DP 2044 B3XF). Fallow in year 1 followed by S in year 2 (F1S2) improved yield in year 2 by 24% compared with S1S2, but not as much as R1S2 (41% yield increase over S1S2). One year of fallow followed by R (F1R2) had lower yield in year 2 (11% reduction) than R1R2. The highest yield after three years of these rotations occurred with R1R2R3, followed by R1S2R3 (17% less yield) and F1F2S3 (35% less yield). <italic>Rotylenchulus reniformis</italic> density in soil averaged 57, 65, and 70% lower (year 1, 2, 3, respectively) in R1R2R3 compared with S1S2S3. In years 1 and 2, LOG<sub>10</sub> transformed nematode density (LREN) was lower in F1, and F1F2, than for all other combinations. In year 3, the lowest LREN were associated with R1R2R3, F1S2F3, and F1F2S3. The highest LREN were associated with F1R2S3, F1S2S3, S1S2S3, R1R2S3, and R1S2S3. The combination of higher yield and lower nematode density will be a strong incentive for producers to use the <italic>R. reniformis</italic> resistant cultivars continuously.</p>
</abstract>

A three-year rotation of cotton (Gossypium hirsutum) cultivars either resistant (R) or susceptible (S) to Rotylenchulus reniformis and fallow (F) was examined for effect on cotton yield and nematode density. In year 1, 2, and 3, the resistant cultivar (DP 2143NR B3XF) yielded 78, 77, and 113% higher than the susceptible cultivar (DP 2044 B3XF). Fallow in year 1 followed by S in year 2 (F1S2) improved yield in year 2 by 24% compared with S1S2, but not as much as R1S2 (41% yield increase over S1S2). One year of fallow followed by R (F1R2) had lower yield in year 2 (11% reduction) than R1R2. The highest yield after three years of these rotations occurred with R1R2R3, followed by R1S2R3 (17% less yield) and F1F2S3 (35% less yield). Rotylenchulus reniformis density in soil averaged 57, 65, and 70% lower (year 1, 2, 3, respectively) in R1R2R3 compared with S1S2S3. In years 1 and 2, LOG10 transformed nematode density (LREN) was lower in F1, and F1F2, than for all other combinations. In year 3, the lowest LREN were associated with R1R2R3, F1S2F3, and F1F2S3. The highest LREN were associated with F1R2S3, F1S2S3, S1S2S3, R1R2S3, and R1S2S3. The combination of higher yield and lower nematode density will be a strong incentive for producers to use the R. reniformis resistant cultivars continuously.

Rotation of Cotton (<italic>Gossypium hirsutum</italic>) Cultivars and Fallow on Yield and <italic>Rotylenchulus reniformis</italic>

Journal of Nematology

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

Rotation of Cotton () Cultivars and Fallow on Yield and 

A three-year rotation of cotton (Gossypium hirsutum) cultivars either resistant (R) or susceptible (S) to Rotylenchulus reniformis and fallow (F) was examined...

Treatment	Lint yield (kg/ha)	REN^b	LREN
2021
R1R2	916 a	295	2.42 c
S1S2	516 d	835	2.89 a
F1F2	--------	60	1.73 d
R1S2	730 b	745	2.78 ab
F1R2	815 b	385	2.52 bc
F1S2	641 c	750	2.77 ab
2022
R1R2R3	1,271 a	150	2.17 d
S1S2S3	597 d	505	2.64 ab
F1F2S3	823 c	295	2.33 cd
R1S2R3	1,051 b	265	2.36 bcd
R1S2S3	599 d	385	2.53 abc
F1R2S3	736 cd	655	2.78 a
F1S2F3	-------	150	2.12 d
F1S2S3	628 cd	570	2.75 a
R1R2S3	724 cd	395	2.54 abc

Rotation of Cotton (Gossypium hirsutum) Cultivars and Fallow on Yield and Rotylenchulus reniformis

Article Category: Research Paper

Publié en ligne: 06 juin 2023

Pages: -

Reçu: 29 janv. 2023

DOI: https://doi.org/10.2478/jofnem-2023-0024

Mots clés
cotton, management, reniform nematode, resistance,

© 2023 Casiani Soto-Ramos et al., published by Sciendo

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

Effect of cultivar and fallow rotation treatments in year 2 and year 3 on cotton lint yield and Rotylenchulus reniformis (REN) density.

Rotation of Cotton (Gossypium hirsutum) Cultivars and Fallow on Yield and Rotylenchulus reniformis

Article Category: Research Paper

Publié en ligne: 06 juin 2023

Pages: -

Reçu: 29 janv. 2023

DOI: https://doi.org/10.2478/jofnem-2023-0024

Mots cléscotton, management, reniform nematode, resistance,

© 2023 Casiani Soto-Ramos et al., published by Sciendo

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

Effect of cultivar and fallow rotation treatments in year 2 and year 3 on cotton lint yield and Rotylenchulus reniformis (REN) density.

Mots clés
cotton, management, reniform nematode, resistance,