CASSAVA MEALYBUG PDF

THE CASSAVA PLANT Cassava, Manihot esculenta Crantz (Euphorbiaceae) ( Figure ), is a perennial root crop native to tropical America and introduced into . Abstract: The cassava mealybug Phenacoccus manihoti (Hemiptera: Pseudococcidae) feeds by sucking the sap of cassava plants, causing damage directly by. Abstract: The cassava mealybug Phenacoccus manihoti (Hemiptera: Pseudococcidae) feeds cassava plants, causing damage directly by sucking the sap and.

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Cassava Mannihot esculenta Crantz varieties and harvesting stages influenced yield and yield related components. In Asia, our model performs well, capturing all areas mentioned as having P. Oral collar tubular ducts few, present medially or submedially only………………………………………………………………… Nipaecoccs nipae Maskell – Ventral multilocular disc pores and oral collar tubular ducts numerous, reaching thorax, present medially and in marginal zone ……………….

Nonetheless, the area projected to be at risk in South America is greater than the current known extent of P. Finally, containment involves managing the spread of invasion either by reducing dispersal, reducing population growth or a combination of both [51][56]. Winotai Mar Thailand Kamphaeng Phet In that respect, our model could be used as a tool to design a risk-based surveying program, specific in space and in time, that improves the probability of detecting nascent P. Entomologia Experimentalis et Applicata As a result, the plants experience reduction in their photosynthetic rate, compromised root quality.

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Since that time, cassava has constituted a major food crop for more than million people in the tropical countries of Africa, Asia and Latin America Cock, In Africa, this crop is mostly cultivated as a staple by peasant farmers, whereas in Asia and South America it is also grown on a large scale for starch, fodder and fuel.

1. Cassava and mealybugs

They have been observed interfering with biological control of cassava mealybug in Ghana Cudjoe et al. The influence of the cassava mealybug, Phenacoccus manihoti Mat. Boussienguet, ; Zeddies et al. The more restricted potential distributions in northwestern South America, central Africa, and in south-eastern Asia using the Parsa et al. This record is interesting, as it is in a mountainous area where it is apparently too cold mezlybug sustain permanent populations of P. Williams DJ Mealybugs of southern Asia.

Effects of neem Azadirachta indica kernel water extracts on cassava mealybug, Phenacoccus caszava Hom. Distribution points in Asia correspond to reports listed in Table 1.

Trilocular pores absent ……………………………………. Fabres G; Kiyindou A, Biological control of cassava pests in Africa. Annu Rev Ecol Evol Syst Three NKWE treatments at weekly intervals protected cassava against established early instar nymphs; however, some phytotoxicity was observed.

Biological control of the cassava mealybug by Epidinocarsis lopezi in Africa: Southern China is modelled as unsuitable for permanent cawsava of P.

Mapping composite climate suitability. Biological control in IPM systems in Africa. Tropical Pest Management, 28 1: Pseudococcidae feeds by sucking the sap of cassava plants, causing damage directly by sucking the sap and contaminating the plant with its toxic saliva and indirectly by favoring the development of sooty molds.

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In life, species pinkish, covered meaalybug a white mealy secretion, with tufts of flocculent waxy secretion at posterior end and around margins Fig. Similar values were also obtained by Bellotti et al. UMN to support TY. Evaluating the efficacy of biological control of three exotic homopteran pests in tropical Africa.

Your e-mail has be sent. Pseudococcidae recorded on Manihot spp. Our model displays greater model sensitivity than the model of Parsa et al. There is always a possibility that a species not included in the key may be found feeding on cassava, thus the following key should be used with caution.

The largest generation is that during the dry season. Neuenschwander P; Gutierrez AP, The question has been raised by Cox and Williams as to whether P. Encyrtidaeby the cassava mealybug, Phenacoccus manihoti Matile-Ferrero Homoptera: Relationships between cassava root yields and crop infestations by the mealybug, Phenacoccus manihoti.

Cassava-Mealybug interactions – 1. Cassava and mealybugs – IRD Éditions

The composite map, showing the potential global distribution of P. Mulualem T, Ayenew B. The benefit to cost ratio of biological control by Apoanagyrus Epidinocarsis lopezi was calculated as at least mealybuug

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