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Plant health evaluations of Belonolaimus longicaudatus and Meloidogyne incognita colonized bermudagrass using remote sensing

Will L. Groover
Will L. Groover
 and 
Kathy S. Lawrence
Kathy S. Lawrence
   | Nov 06, 2020
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Published Online: Nov 06, 2020
Page range: 1 - 13
DOI: https://doi.org/10.21307/jofnem-2020-109
Keywords
© 2020 Will L. Groover et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Auburn University Meloidogyne incognita nematicide microplot trials for 2018 and 2019 showing M. incognita population density for 2018 (A) and 2019 (B), visual turf quality ratings for 2018 (C) and 2019 (D), NDVI ratings for 2018 (E) and 2019 (F), and NDRE values for 2018 (G) and 2019 (H). *Different from the untreated control according to the pairwise comparison of each treatment to the untreated (Tukey’s, P ≤ 0.05).
Auburn University Meloidogyne incognita nematicide microplot trials for 2018 and 2019 showing M. incognita population density for 2018 (A) and 2019 (B), visual turf quality ratings for 2018 (C) and 2019 (D), NDVI ratings for 2018 (E) and 2019 (F), and NDRE values for 2018 (G) and 2019 (H). *Different from the untreated control according to the pairwise comparison of each treatment to the untreated (Tukey’s, P ≤ 0.05).

Figure 2:

Auburn University Belonolaimus longicaudatus nematicide microplot trials for 2018 and 2019 showing B. longicaudatus population density for 2018 (A) and 2019 (B), visual turf quality ratings for 2018 (C) and 2019 (D), NDVI ratings for 2018 (E) and 2019 (F), and NDRE values for 2018 (G) and 2019 (H). *Different from the untreated control according to the pairwise comparison of each treatment to the untreated (Tukey’s, P ≤ 0.05).
Auburn University Belonolaimus longicaudatus nematicide microplot trials for 2018 and 2019 showing B. longicaudatus population density for 2018 (A) and 2019 (B), visual turf quality ratings for 2018 (C) and 2019 (D), NDVI ratings for 2018 (E) and 2019 (F), and NDRE values for 2018 (G) and 2019 (H). *Different from the untreated control according to the pairwise comparison of each treatment to the untreated (Tukey’s, P ≤ 0.05).

Figure 3:

Plant-parasitic nematode genera identified at Montevallo Golf Course, Montevallo, AL in 2019. Genera include Hoplolaimus spp. (A), Helicotylenchulus spp. (B), Meloidogyne spp. (C), Belonolaimus longicaudatus (D), and Criconemoides spp. (E). *Different from the untreated control according to the pairwise comparison of each treatment to the untreated (Tukey’s, P ≤ 0.05).
Plant-parasitic nematode genera identified at Montevallo Golf Course, Montevallo, AL in 2019. Genera include Hoplolaimus spp. (A), Helicotylenchulus spp. (B), Meloidogyne spp. (C), Belonolaimus longicaudatus (D), and Criconemoides spp. (E). *Different from the untreated control according to the pairwise comparison of each treatment to the untreated (Tukey’s, P ≤ 0.05).

Figure 4:

Nematicide effects on total plant-parasitic nematode population density (A), visual turf quality (B), NDVI (C), and NDRE (D) at Montevallo Golf Course, Montevallo AL, 2019. *Different from the untreated control according to the pairwise comparison of each treatment to the untreated (Tukey’s, P ≤ 0.05).
Nematicide effects on total plant-parasitic nematode population density (A), visual turf quality (B), NDVI (C), and NDRE (D) at Montevallo Golf Course, Montevallo AL, 2019. *Different from the untreated control according to the pairwise comparison of each treatment to the untreated (Tukey’s, P ≤ 0.05).

Pearson correlation coefficients† resulting from linear correlation of vigor ratings and plant-parasitic nematode density from four bermudagrass putting greens treated with three different nematicides in 2019 in Montevallo, AL.

July 22 August 5 August 19 September 3 September 16 September 30 October 14
Turf visual quality a
NDVIb NS NS 0.63** 0.70** 0.62** 0.78*** 0.80***
NDREc NS NS NS 0.59* 0.51* 0.67** 0.60**
NDVI
NDRE NS NS 0.49* 0.76*** 0.93*** 0.79*** 0.68**
Total plant-parasitic nematodes
Turf visual quality −0.64** −0.81*** −0.85*** −0.84***
NDVI −0.47* −0.84*** −0.80*** −0.82***
NDRE NS −0.59* −0.70** −0.70**

Pearson correlation coefficients† resulting from linear correlation of data parameters from 2018 and 2019 Meloidogyne incognita infested bermudagrass microplots in Auburn, AL.

2018 2019
July August September July August September
Turf visual quality a
NDVIb 0.59** NS NS NS NS 0.63***
NDREc NS NS NS NS NS 0.66***
NDRE
NDVI NS 0.72*** 0.93*** 0.60*** 0.72*** 0.95***
Meloidogyne incognita
Turf visual quality NS −0.39* NS −0.64* −0.39* −0.59**
NDVI NS −0.48* −0.76*** NS −0.37* −0.82***
NDRE NS NS −0.61** NS NS −0.76***

Pearson correlation coefficients† resulting from linear correlation of data parameters from 2018 and 2019 Belanolaimus lonigcaudatus infested bermudagrass microplots in Auburn, AL.

2018 2019
July August September July August September
Turf visual quality a
NDVIb NS NS 0.63*** NS 0.43* 0.41*
NDREc NS NS 0.66*** NS 0.45* 0.56**
NDRE
NDVI 0.60** 0.72*** 0.96*** 0.91*** 0.96*** 0.84***
Belonolaimus longicaudatus
Turf visual quality −0.64*** NS −0.56** NS −0.56** −0.54**
NDVI NS NS −0.57** −0.51** −0.57*** −0.56**
NDRE NS NS −0.61** −0.53** −0.61*** −0.63**
eISSN:
2640-396X
Language:
English
Publication timeframe:
Volume Open
Journal Subjects:
Life Sciences, other
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