To evaluate the Aggressiveness of the fungi responsible for pod rot in cropping systems based on cocoa trees (Theobroma Cacao L.), 3 cropping systems having cocoa trees were characterized: Cocoa trees associated with fruits and forest trees (S1), Cocoa trees associated with plantains and palm oil (S2) and associated cocoa trees with coffee trees (S3). 150 pods were collected per year for isolation and in-situ pathogenicity tests. Three culture media called V6-agar, V8-agar and Potato - Dextrose - Agar (PDA) were made for the in-vitro culture of fungi associated with pods. The test was conducted using a random split split plots arrangement with 9 replicates. As results obtained: of the 8 mushrooms which were isolated from the pods, only 3 are responsible for the burps. It is about Phytophthora megakarya, Botryodiplodia theobromae and Colletotrichum gloeosporioides. Black pods disease caused by P. megakarya was the most aggressively from cocoa pods associated with fruits and forest trees at a decay rate of 5% during a dryng season and 55% during a rainy season. The lesion areas developed by P. megakarya ranged from 40 cm2 during a dryng season to 220 cm2 during a rainy season. Cropping system having cocoa trees associated with fruits and forest trees (S1) is the most vulnerable to the the Aggressiveness of the fungi responsible for pod rot.
Published in | American Journal of Agriculture and Forestry (Volume 9, Issue 3) |
DOI | 10.11648/j.ajaf.20210903.19 |
Page(s) | 156-163 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2021. Published by Science Publishing Group |
Aggressiveness, Croping System, Decay Rate, Lesion Area
[1] | Mfegue V., Mbenoun M., Ten Hoopen M., Techou Z., Badjeck I., Ducamp M., and Ivors K., 2002. Development of a prophylactic control method against brown pod rot of cocoa, based on the participatory identification of primary foci of infection of the agent Phytophthora megakarya in the field. IRAD- Cameroon, Montpellier International Cooperation Center, Department of Plant Protection. |
[2] | Ndoumbè-Nkeng M., 2002. Incidence of agro-ecological factors on the epidemiology of brown rot in cocoa tree fruits in Cameroon: contribution to the establishment of an agricultural warning model. Doctoral thesis. National Agronomic Institute Paris-Grignon. |
[3] | Pohe J., Koula J., MIAN Jacques Dutron.., OKou Staella Florence. 2020. Spatio-temporal dynamics of the brown rot of cocoa pots due to phytophthora sp. in the department of Aboisso (Cote d'Ivoire) Journal of Applied Biosciences 145: 14842-14852. |
[4] | Klemmer H. W. and Lenney J. F. 1965. Lipids stimulating sexual reproduction and growthin Phytiaceous fungi. Phytopathology 55: 320-323. |
[5] | Zhu J., Zhang Z., Yang Z., 2001. General research methods on pathogen of potato late blight (Phytophthora infestans). Journal of Agricultural Sciences, 24: pp 112-114. |
[6] | Evans H. C., Holmes K. A. and Thomas S. E., 2003. Endophytes and mycoparasites associated with an indigenous forest tree, Theobroma gileri, in Ecuador and preliminary assessment of their potential as biocontrol agents of cocoa diseases. Mycological Progress 2: pp 149-160. |
[7] | Ribini M. R., Silva-Ribeiro R. T., 2005. Diversity of endophytic fungal community of cacao (Theobroma cacao L.) and control of Crinipellis perniciosa, causal agent of Witches ’Broom Disease. Int. J B Sci. 1: pp 24-33. |
[8] | Blaha G., 1989. Phytosanitary status of the Njolé cocoa plantation in Koulamoutou (Ogoué-solo province). Report of mission to Gabon with Socagab. p 68. |
[9] | Butt (T. M.), Hajek (A. E.) and (R. A.) Humber 1994: The effect of temperature on growth and survival of protoplasts of the gypsy moth pathogen Entomophaga maimaiga. J. Invertebr. Pathol., 64: 74-75. |
[10] | Champeil A., Fourbet J., Dore T., Rossignol L. 2004. Influence of cropping system on Fusarium head blight and mycotoxin levels in winter. Crop Protection, 23 (6), 531-537. |
[11] | Jagoret. P., 2011, thesis Analysis and evaluation of complex agroforestry systems over the long term: Application to cocoa-based cropping systems in central Cameroon. Monpellier SupAgro. |
[12] | Mboussi S. B., Ambang Z., Ndogho A., Ngoh Dooh P. J., Essouma M. F., 2016. In-vitro Antifungal Potential of Aqueous Seeds extracts of Azadirachta indica and Thevetia peruviana against Phytophthora megakarya in Cameroon. Journal of Applied Life Sciences International 4 (4): pp 1-12. |
[13] | Deberdt P., Mfegue CV, Tondje PR, Bon MC, Ducamp M., Hurard C., Begounde BAD, Ndoumbe-Nkeng M., Hebbar PK, Cilas C., 2008. Impact of environmental factors, chemical fungicide and biological control on cocoa pod production dynamics and black pod disease (Phytophthora megakarya) in Cameroon. Biological Control 44: 149-159. |
[14] | Venance-Pacques Gniayou Kouadjo., BI Tra Aimé Vroh, Kouassi Bruno Kpangui, Affia Sonmia 2018. Effect of shade on phenotypic characters of cocoa tree in the forest-savannah transition zone in central Côte d’Ivoire. EDP Sciences 2018: pp 1-12. |
APA Style
Ze Medjap Abel Second, Yaouba Aoudou, Bikomo Mbonomo Rene. (2021). Aggressiveness of the Fungi Responsible for Pod Rot in Cropping Systems Based on Cocoa Trees (Theobroma cacao L.) in Cameroon. American Journal of Agriculture and Forestry, 9(3), 156-163. https://doi.org/10.11648/j.ajaf.20210903.19
ACS Style
Ze Medjap Abel Second; Yaouba Aoudou; Bikomo Mbonomo Rene. Aggressiveness of the Fungi Responsible for Pod Rot in Cropping Systems Based on Cocoa Trees (Theobroma cacao L.) in Cameroon. Am. J. Agric. For. 2021, 9(3), 156-163. doi: 10.11648/j.ajaf.20210903.19
AMA Style
Ze Medjap Abel Second, Yaouba Aoudou, Bikomo Mbonomo Rene. Aggressiveness of the Fungi Responsible for Pod Rot in Cropping Systems Based on Cocoa Trees (Theobroma cacao L.) in Cameroon. Am J Agric For. 2021;9(3):156-163. doi: 10.11648/j.ajaf.20210903.19
@article{10.11648/j.ajaf.20210903.19, author = {Ze Medjap Abel Second and Yaouba Aoudou and Bikomo Mbonomo Rene}, title = {Aggressiveness of the Fungi Responsible for Pod Rot in Cropping Systems Based on Cocoa Trees (Theobroma cacao L.) in Cameroon}, journal = {American Journal of Agriculture and Forestry}, volume = {9}, number = {3}, pages = {156-163}, doi = {10.11648/j.ajaf.20210903.19}, url = {https://doi.org/10.11648/j.ajaf.20210903.19}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20210903.19}, abstract = {To evaluate the Aggressiveness of the fungi responsible for pod rot in cropping systems based on cocoa trees (Theobroma Cacao L.), 3 cropping systems having cocoa trees were characterized: Cocoa trees associated with fruits and forest trees (S1), Cocoa trees associated with plantains and palm oil (S2) and associated cocoa trees with coffee trees (S3). 150 pods were collected per year for isolation and in-situ pathogenicity tests. Three culture media called V6-agar, V8-agar and Potato - Dextrose - Agar (PDA) were made for the in-vitro culture of fungi associated with pods. The test was conducted using a random split split plots arrangement with 9 replicates. As results obtained: of the 8 mushrooms which were isolated from the pods, only 3 are responsible for the burps. It is about Phytophthora megakarya, Botryodiplodia theobromae and Colletotrichum gloeosporioides. Black pods disease caused by P. megakarya was the most aggressively from cocoa pods associated with fruits and forest trees at a decay rate of 5% during a dryng season and 55% during a rainy season. The lesion areas developed by P. megakarya ranged from 40 cm2 during a dryng season to 220 cm2 during a rainy season. Cropping system having cocoa trees associated with fruits and forest trees (S1) is the most vulnerable to the the Aggressiveness of the fungi responsible for pod rot.}, year = {2021} }
TY - JOUR T1 - Aggressiveness of the Fungi Responsible for Pod Rot in Cropping Systems Based on Cocoa Trees (Theobroma cacao L.) in Cameroon AU - Ze Medjap Abel Second AU - Yaouba Aoudou AU - Bikomo Mbonomo Rene Y1 - 2021/06/07 PY - 2021 N1 - https://doi.org/10.11648/j.ajaf.20210903.19 DO - 10.11648/j.ajaf.20210903.19 T2 - American Journal of Agriculture and Forestry JF - American Journal of Agriculture and Forestry JO - American Journal of Agriculture and Forestry SP - 156 EP - 163 PB - Science Publishing Group SN - 2330-8591 UR - https://doi.org/10.11648/j.ajaf.20210903.19 AB - To evaluate the Aggressiveness of the fungi responsible for pod rot in cropping systems based on cocoa trees (Theobroma Cacao L.), 3 cropping systems having cocoa trees were characterized: Cocoa trees associated with fruits and forest trees (S1), Cocoa trees associated with plantains and palm oil (S2) and associated cocoa trees with coffee trees (S3). 150 pods were collected per year for isolation and in-situ pathogenicity tests. Three culture media called V6-agar, V8-agar and Potato - Dextrose - Agar (PDA) were made for the in-vitro culture of fungi associated with pods. The test was conducted using a random split split plots arrangement with 9 replicates. As results obtained: of the 8 mushrooms which were isolated from the pods, only 3 are responsible for the burps. It is about Phytophthora megakarya, Botryodiplodia theobromae and Colletotrichum gloeosporioides. Black pods disease caused by P. megakarya was the most aggressively from cocoa pods associated with fruits and forest trees at a decay rate of 5% during a dryng season and 55% during a rainy season. The lesion areas developed by P. megakarya ranged from 40 cm2 during a dryng season to 220 cm2 during a rainy season. Cropping system having cocoa trees associated with fruits and forest trees (S1) is the most vulnerable to the the Aggressiveness of the fungi responsible for pod rot. VL - 9 IS - 3 ER -