Leaf spot disease of groundnut: A review of existing research on management strategies

Kankam, Frederick; Akpatsu, Isaac Boatey; Tengey, Theophilus Kwabla

doi:10.1080/23311932.2022.2118650

Cited by 13 publications

(12 citation statements)

References 28 publications

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“…Our review of the relevant literature shows that there is currently no standard image dataset of groundnut leaves in terms of size and images, etc. Therefore, we believe it is critical to create and disseminate such a dataset to promote study of plant disease detection using machine learning [3] . In the opinion of many leading experts in the field of machine learning, the benefits of this field have not yet been fully exploited for societal goods like healthcare and agriculture.…”

Section: Objectivementioning

confidence: 99%

“…As its name suggests, cercospora arachidicola , the fungus responsible for early leaf spot, manifests itself early on in the crop's development after planting. Lesions on the underside of a leaf are typically a lighter shade of brown, and they are surrounded by a yellow halo [3] . During wet seasons, disease tends to spread rapidly.…”

Section: Data Descriptionmentioning

confidence: 99%

“…Around 7–8 weeks after planting, infections begin. Lesions on leaves look like small, circular, dark brown spots without a yellow halo, and their undersides and upper side are a carbon black color [3] . For further analysis, a digital camera captures a total of 1896 images.…”

Section: Data Descriptionmentioning

confidence: 99%

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Dataset of groundnut plant leaf images for classification and detection

Reddy

2023

Data in Brief

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Section: Objectivementioning

confidence: 99%

Section: Data Descriptionmentioning

confidence: 99%

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Dataset of groundnut plant leaf images for classification and detection

Reddy

2023

Data in Brief

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“…Late leaf spot (LLS) is the most damaging foliar diseases of groundnut (Arachis hypogaea L.) which considerably limits its production worldwide compared to the early leaf spot. The effect of late leaf spot and early leaf spot can lead to up to 70% yield loss under severe conditions [10]. Late leaf spot can occur in all groundnut growing regions [11] [12].…”

Section: Introductionmentioning

confidence: 99%

“…Globally current methods to treat leaf spot include cultural control, chemical control, the use of antagonistic organisms, and host plant resistance. These areas unabatedly continue to be an active research area, and current information on their efficacy will continuously be available [10]. Accurate spa-tio-temporal weather information is crucial as [23] for disease management.…”

Section: Introductionmentioning

confidence: 99%

Evaluation under Semi-Controlled Conditions of the Pathogenicity of Three Isolates of <i>Phaeoisariopsis personata</i> (Berk. & M.A Curt.)

Neya¹,

Sawadogo²,

Nana³

et al. 2023

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Peanut (Arachis hypogaea L.) late leaf spot is an important disease caused by Phaeoisariopsis personata (Berk. Et M. A Curt.). This fungus is responsible for the most damaging leaf spots in peanut production. The present experiment was undertaken to evaluate the pathogenic variability of Phaeoisariopsis personata in Burkina Faso. To this end, detached leaves and healthy plants of three peanut varieties were inoculated. Isolates I3TF, I2TG and I1TK of the pathogen (10 5 conidia/ml), collected respectively in the western, central and eastern agroecological zones of country, were used. The inoculated leaves were kept in Petri dishes on moist blotting paper and stored in the laboratory during the experimental period. The inoculated plants were grown under glass in pots containing a mixture of sterilized sand and clay. The development of disease was monitored and severity was scored every 15 days using rating scale. The results obtained in the laboratory and in the greenhouse revealed that there is pathogenic variability in the isolates tested. Indeed, for each variety, the highest severity score was recorded in plants inoculated with isolate I3TF and the lowest severity score with isolate I1TG. In the laboratory the severity scores ranged from 6.76 to 8.80 in TS32-1, 6.18 to 8.29 in SH70P and 5.98 to 7.92 in PC79-79. In the greenhouse, the average severity scores ranged from 5.61 to 8.33 in TS32-1, from 5.19 to 8.00 in SH70P, from 4.90 to 7.50 in PC79-79. Thus, the variety TS32-1 was the most susceptible to all three isolates of the pathogen.

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Induction of Tolerance in Groundnut Plants Against Drought Stress and Cercospora Leaf Spot Disease with Exogenous Application of Arginine and Sodium Nitroprusside Under Field Conditions

Bakhoum,

Sadak,

Thabet

2023

J Soil Sci Plant Nutr

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Naturally, under field conditions, plants are regularly experienced by a mixture of two or more stress factors. Drought is a major abiotic stress, and fungal pathogens characterize a main biotic stress challenge faced by plants and impact negatively on plant development and productivity. We propose that foliar application of nitric oxide (NO) donors can have positive effects on the induction of tolerance to biotic and abiotic stress on groundnut plants. This investigation was carried out to study the changes in growth, some biochemical aspects, and yield and quality of groundnut plants as well as induction of resistance to Cercospora leaf spot disease in response to nitric oxide (NO) donors, sodium nitroprusside (SNP), and arginine (Arg) (2.5, 5.0, and 7.5 mM) under two water irrigation levels 100% and 75% of water irrigation requirements (WIR), in two field experiments through two successive growing seasons of 2021 and 2022. Decreasing irrigation water significantly reduced shoot length, branches numberplant-1, shoot fresh and dry weight, photosynthetic pigments components, endogenous indole acetic acid (IAA) contents, and yield components. Furthermore, root fresh and dry weight, phenols, total soluble sugars (TSS), proline contents, and the accumulation of hydrogen peroxide (H2O2) and lipid peroxidation of groundnut leaves increased significantly. Contrarily, foliar application with Arg and SNP alleviated the negative influences of drought on growth and productivity of groundnut plants via enhancing photosynthetic pigments, IAA, phenolic compounds, TSS, and proline contents. Additionally, SNP and Arg significantly decreased oxidative damage through decreasing H2O2 and lipid peroxidation by the induction of antioxidant enzymes. Remarkably, the increase of drought level led to a reduction in Cercospora leaf spot (CLS) disease with the use of high concentrations of both Arg and SNP. Interestingly, in both stressed and unstressed plants, SNP treatment at 7.5 mM was the most effective in reducing the incidence and severity of disease, while Arg at 2.5 mM recorded the lowest reduction compared to other treatments. In conclusion, foliar treatment of either SNP or Arg is a profound effect on modulating the drought stress and induction of resistance to Cercospora leaf spot disease of groundnut plants throughout regulating physiological and biochemical processes associated with photosynthesis and oxidative responses.

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Leaf spot disease of groundnut: A review of existing research on management strategies

Cited by 13 publications

References 28 publications

Dataset of groundnut plant leaf images for classification and detection

Dataset of groundnut plant leaf images for classification and detection

Evaluation under Semi-Controlled Conditions of the Pathogenicity of Three Isolates of <i>Phaeoisariopsis personata</i> (Berk. & M.A Curt.)

Induction of Tolerance in Groundnut Plants Against Drought Stress and Cercospora Leaf Spot Disease with Exogenous Application of Arginine and Sodium Nitroprusside Under Field Conditions

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Leaf spot disease of groundnut: A review of existing research on management strategies

Cited by 13 publications

References 28 publications

Dataset of groundnut plant leaf images for classification and detection

Dataset of groundnut plant leaf images for classification and detection

Evaluation under Semi-Controlled Conditions of the Pathogenicity of Three Isolates of &lt;i&gt;Phaeoisariopsis personata&lt;/i&gt; (Berk. &amp; M.A Curt.)

Induction of Tolerance in Groundnut Plants Against Drought Stress and Cercospora Leaf Spot Disease with Exogenous Application of Arginine and Sodium Nitroprusside Under Field Conditions

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Evaluation under Semi-Controlled Conditions of the Pathogenicity of Three Isolates of <i>Phaeoisariopsis personata</i> (Berk. & M.A Curt.)