Efficacité des fongicides Mancozèbe 80 WP et Chlorothalonil-Carbendazime 65 SC contre &lt;i&gt;Colletotrichum gloeosporioides&lt;/i&gt; agent causal de l’anthracnose de l’anacardier au Bénin

Tonon, Dénis; Sikirou, Rachidatou; Adomou, Aristide Cossi; Zinsou, Valerien; Zocli, Bruno; N’djolosse, Kouami; Bello, S. S.

doi:10.4314/ijbcs.v11i5.13

Cited by 6 publications

(7 citation statements)

References 3 publications

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“…Nevertheless, several works have shown the efficacy of Mancozeb 80 WP on other species of fungi in the field. Tonon et al (2018) showed the reduced incidence and severity of cashew tree anthracnose caused by Colletotrichum gloesporiodes in the field. Randriantsalama et al (2014) No study previously demonstrated the efficiency of neem extract against P. maydis.…”

Section: Discussionmentioning

confidence: 99%

Efficacy and Induction Resistance of Neem Extract and Mancozeb 80 Wp on Physoderma Brown Spot and Physoderma Stalk Rot Diseases of Corn (Zea mays) caused by Physoderma Maydis in Far North Cameroon

Dooh

Gabriel

Martial

et al. 2021

Int. J. Phytopathol.

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Corn (Zea mays) is one of the most widely spread cereals in the world. However, in the Far North Region of Cameroon, the incidence of some maize diseases progress because of farming practices and climate change (rainfall). This work aims to evaluate effect and resistance stimulation of neem extract and Mancozeb fungicide on Brown Spot (PBS) and Stalk Rot (PSR) diseases of corn due to Physoderma maydis in field condition. The experimental design was a two-factor split-plot. The treatments were a combination of Control (T), Mancozeb (Mz) at the concentration of 6g/L and aqueous extract of neem seeds (AENS) at the concentration of 50g/L with CMS 9015 and CMS 8704 varieties. Incidence, severity, rainfall, Area Under Disease Progress Curve (AUIPC, AUSiPC) were recorded. Phenol and protein rates, enzymatic activity of Polyphenol oxidase (PPO), peroxidase (POX) and glucanase were carried out. Stalk length and yield were evaluated. Incidence and severity of Physoderma Brown Spot (PBS) and Physoderma Stalk Rot (PSR) increased with time and environmental conditions (rainfall). The highest disease incidence was observed in the control treatments with both diseases, 52.39 and 37.67 % respectively for Brown Spot and Stalk Rot in CMS8704 variety and lower with AENS, 13.5 and 36.01%. AENS reduced PBS incidence and severity by 23.1 and 19.9 %, respectively and Mz by 9.3 and 18.1 %. The AUIPC and AUSiPC of PBS and PSR remained lower with AENS treatment during the growing season and higher with the other treatments. The highest phenol and proteins rates (8.81 and 25.1 mg/g/FM) were recorded for the AENS treatment in CMS9015 and CMS8704 variety, respectively. Enzymatic activity was more enhanced in CMS8704 variety with AENS. 4.22 A470/min/g, 1.55 A470/min/g and 1.15 µmole/min /g were recorded respectively for PPO, POX, and Glucane activities. Stalk length was higher in AENS and Mancozeb treatments with variety CMS8704 (125.13 and 123 cm respectively). A yield increase of 7.44% was obtained in the AENS treatment. The combination or not of aqueous neem extract and CMS8704 could be used in the integrated control of PBS and PSR of maize

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Section: Discussionmentioning

confidence: 99%

Efficacy and Induction Resistance of Neem Extract and Mancozeb 80 Wp on Physoderma Brown Spot and Physoderma Stalk Rot Diseases of Corn (Zea mays) caused by Physoderma Maydis in Far North Cameroon

Dooh

Gabriel

Martial

et al. 2021

Int. J. Phytopathol.

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“…These results are in agreement with those of [14] who showed the efficacy of carbendazine and propiconazole on the growth of P. heterocornis isolates in vitro. In addition, Mancozeb has demonstrated its efficacy on reducing in vitro and in vivo the growth of several other fungi such as Colletotrichum gloeosporioides [15].…”

Section: Discussionmentioning

confidence: 99%

“…Contact fungicide are known for their action on respiration through the thiol (sulfur) function, which associates with oxygen and thus limits respiration, essential process of germination. In addition, Mancozeb 80 WP has already shown its effectiveness in inhibiting the germination of spores of many fungi [15], [38].…”

Section: Discussionmentioning

confidence: 99%

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Effect of Aqueous Neem Extract on Development of Pestalotia heterocornis Agent of Pestalotia Leaf Blight of Cashew in Far North Cameroon

Dooh

Tadzo

Placide

et al. 2021

EJFOOD

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Cashew (Anacardium occidentale L.) trees are threatened by my many fungal diseases, among which pestaliotiopsis occupies an important place in terms of damage created in Cameroon. The aim of the present study is to evaluate the effects of aqueous extract of neem seed (AENS) on the development of Pestalotia heterocornis, the causative agent of pestalotiopsis of cashew. Isolates of P. heterocornis were obtained from diseased cashew leaves collected in the orchads. The concentrations of AENS were C1 = 500 μg/ml, C2 = 50 μg/ml and C3 = 5 μg/ml. Mancozeb 80 WP (Mz) was used as positive control. Effect of Mancobeb 80WP on the growth and spore germination of isolates were performed. The effect of AENS on the plants was evaluated in vivo. Four (4) isolates of P. heterocornis were used. AENS C1 concentration reduced the growth of all isolates. The percentage of inhibition was ranged from 45 to 90 % with the other concentrations. AENS did not inhibited spore germination (0.0 %). But Mz totally inhibited conidia germination of all isolates. In vivo, AENS protected plants against P. heterocornis. AENS can be integrated in management of cashew plants against P. heterocornis.

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“…To reduce yield losses due to anthracnose, chemical control remains the rapid and short time and more available means to control pests. Fungicides containing Trifloxystrobin, Hexaconazole, Mancozeb, Triadimenol or Penconazole and that contains both Chlorothalonil and Carbendazim have been reported very effective against cashew anthracnose [2,53] .…”

Section: Cashew Disease Managementmentioning

confidence: 99%

Management of insect pests and diseases of cashew nuts (Anacardium occidentale L.) in production areas

2021

jcbsc

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Efficacité des fongicides Mancozèbe 80 WP et Chlorothalonil-Carbendazime 65 SC contre <i>Colletotrichum gloeosporioides</i> agent causal de l’anthracnose de l’anacardier au Bénin

Cited by 6 publications

References 3 publications

Efficacy and Induction Resistance of Neem Extract and Mancozeb 80 Wp on Physoderma Brown Spot and Physoderma Stalk Rot Diseases of Corn (Zea mays) caused by Physoderma Maydis in Far North Cameroon

Efficacy and Induction Resistance of Neem Extract and Mancozeb 80 Wp on Physoderma Brown Spot and Physoderma Stalk Rot Diseases of Corn (Zea mays) caused by Physoderma Maydis in Far North Cameroon

Effect of Aqueous Neem Extract on Development of Pestalotia heterocornis Agent of Pestalotia Leaf Blight of Cashew in Far North Cameroon

Management of insect pests and diseases of cashew nuts (Anacardium occidentale L.) in production areas

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