Incidence and Severity of Anthracnose in Mango Fruits and its Control with Plant Extracts in South West Nigeria

Onyeani, Charles A.; Amusa, N. A.

doi:10.3923/ijar.2015.33.43

Cited by 9 publications

(5 citation statements)

References 6 publications

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“…Anthracnose is seen as an essential primary disease affecting several fruits of soursop, leading to huge economic loss, loss of storage durability and availability (Kiprop et al, 2020;González-Ruíz et al, 2021;Ciofini et al, 2022). An investigation reported by Onyeani and Amusa (2015) showed that fruit decay and deterioration by Anthracnose is responsible for a serious threat to fruit availability and marketing in Nigeria. The symptoms of anthracnose observed in this study were characterised by occurrence in the form of sunken brown to black spots on the fruit surface.…”

Section: Discussionmentioning

confidence: 99%

Post-harvest Survey of Fungal Diseases Associated with Soursop (Annona muricata L.) Fruits

Moore¹,

Ataga²,

Agogbua³

et al. 2023

ijird

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Annona muricata L. (soursop) fruit, consumed globally, is highly susceptible to attack by fungal organisms. Fungal fruit rots' impact on Annona muricata is gradually increasing globally, with distribution in tropical areas, including southern Nigeria, resulting in reducing market availability and fruit quality. This study was aimed at surveying the post-harvest disease symptoms associated with Annona muricata fruits displayed for sales and the disease incidence-severity, which indicates the extent of the damage caused by the symptoms. Soursop fruit samples in Port Harcourt Local Government Area (PHALGA) and Obio-Apkor Local Government Area in Rivers State, Nigeria, were surveyed. Each fruit was scored on a disease severity scale of 0–4 (0% no disease), (1–25% trace of disease), (25–50% light disease), (50–75% moderate disease) and (75–100% severe disease). The data obtained were subjected to Analysis of Variance (ANOVA) and Duncan’s Multiple Range Test (DMRT) at 5% level of probability using LSD (Least Significant Difference). The study revealed that Annona muricata fruits were dominated by fungal disease symptoms of dry rot, soft rot, anthracnose, powdery mildew and diplodia fruit rot. There was no significant difference between location pairs for all disease symptoms of incidence and severity of Annona muricata, respectively. Fungal diseases at the post-harvest stage pose a threat to storage durability, distribution and market availability of fruits.

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Section: Discussionmentioning

confidence: 99%

Post-harvest Survey of Fungal Diseases Associated with Soursop (Annona muricata L.) Fruits

Moore¹,

Ataga²,

Agogbua³

et al. 2023

ijird

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“…Percent inhibition of tuber infection over control was calculated using formula by Onyeani et al (2015) is given below…”

Section: Number Of Infected Tubermentioning

confidence: 99%

Evaluation of Trichoderma Harzianum in Controlling Late Blight of Potato

Khatun¹,

Joya²,

Hoque³

et al. 2021

Sust.food.agr.

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Evaluation of Trichoderma harzianum in reducing mycelial growth of Phytophthora infestans as well as in controlling late blight of potato was done in Microbiology and Biocontrol laboratory and Net-house, Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh during 2019-2020, Bangladesh. The experiment was conducted using popular potato variety Diamant and native variety Challisha. T. harzianum was evaluated in net-house and in-vitro condition. Fungicide Indofil M-45 (Mancozeb) was used as positive check for comparison. In Net-house experiment, T. harzianum increased plant height, number of tubers and fresh weight of tubers over control treatment for the both of the varieties of potato. T. harzianum on late blight of potato (var. Diamant) showed a significantly better management over control treatment. In comparison to non-treated control treatment, reduced infection of late blight was found in the T.harzianum treated plants, whereas increase disease severity was calculated in control treatment. After harvesting, tuber infection in T. harzianum treated plants was not observed. Percent inhibition of tuber infection over control was 100%. Indofil M-45 suppressed Disease severity but comparatively less effective than T. harzianum in the long run. In case of variety Challisha similar trend of results were observed. In dual culture assay, T. harzianum showed highest inhibitory effect in suppressing mycelial growth of P. infestans. T. harzianum showed 86.67% inhibition of mycelial growth of P. infestans over control. Thus, it can be concluded that T. harzianum is effective to control late blight of potato and sometimes comparable to chemical fungicide in net-house condition.

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“…After assessment of disease intensity, disease incidence and severity in each orchard on leaves and fruits were determined using the following formulas (Akhtar and Alam, 2002;Onyeani and Amusa, 2015) :…”

Section: Determination Of Disease Incidence and Severity On Mango Leamentioning

confidence: 99%

Pre and postharvest assessment of mango anthracnose incidence and severity in the north of Côte d’Ivoire

Dembele¹,

Amari²,

Camara³

et al. 2020

Int. J. Bio. Chem. Sci

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Mango is one of the most economically important fruit crop in the north of Côte d'Ivoire. However, its production and productivity are limited by various biotic and abiotic factors. Amongst fungal disease, mango anthracnose is recorded to be the most important disease in the northern districts. This study assessed the incidence and severity of pre-and post-harvest anthracnose to compare the level of orchard infestation in the seven mango producing districts in the north of Côte d'Ivoire. Anthracnose disease incidence and severity varied from locality to locality both in dry and rainy season. Disease intensity was higher in rainy season than dry season. In dry and rainy seasons, the highest disease incidence (19.08% and 32.25%) was recorded in Bèrèdougou and the least in Zèguèrè. Pre and post-harvest anthracnose correlated significantly indicating that infection initiated in field and remained latent until fruits repining. The disease was also more severe on fruits than leaves. On fruits disease incidence and severity were higher in Dianra village (90% and 100%) and Bèrèdougou (36% and 40%). The lowest disease incidence (7.5%) and severity (1.5%) on fruits were observed in Zèguèrè. This study showed that anthracnose disease is one the most important threat to production and marketing of fresh mango fruits in the north of Côte d'Ivoire.

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Incidence and Severity of Anthracnose in Mango Fruits and its Control with Plant Extracts in South West Nigeria

Cited by 9 publications

References 6 publications

Post-harvest Survey of Fungal Diseases Associated with Soursop (Annona muricata L.) Fruits

Post-harvest Survey of Fungal Diseases Associated with Soursop (Annona muricata L.) Fruits

Evaluation of Trichoderma Harzianum in Controlling Late Blight of Potato

Pre and postharvest assessment of mango anthracnose incidence and severity in the north of Côte d’Ivoire

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