A review of pesticide usage in the control of cassava mealybug, Phenacoccus manihoti Matile-Ferrero (Pseudococcidae) and green spider mite, Mononychellus tanajoa Bondar (Tetranychidae)

By:

EMEHUTE, J.K.U

Material type: Text

TextLanguage: English Publication details: Umudike, NG National Root Crops Research Institute (NRCRI) 1986Description: 12 pSubject(s): LOC classification:

28181

Summary: Se esbozan brevemente la historia y el estado de 2 plagas importantes, Phenacoccus manihoti y Mononychellus tanajoa, en la region productora de yuca de Africa. Se resaltan los resultados de algunos expt. con pesticidas para controlar P. manihoti y M. tanajoa. Generalmente, los rendimientos obtenidos en parcelas tratadas quimicamente no fueron significativamente mejores que los rendimientos en parcelas sin tratar. Con base en esto y en los altos costos y riesgos involucrados, se concluye que se debe reconsiderar el enfasis puesto en el uso de pesticidas para controlar ambas plagas. El uso de pesticidas, sin embargo, podria recomendarse para fincas exptl. y comerciales. (RA-CIAT)Summary: The history and status of 2 important pests, Phenacoccus manihoti and Mononychellus tanajoa, in the cassava belt of Africa are briefly outlined. Results of some pesticide expt. to control P. manihoti and M. tanajoa are highlighted. Generally, yields obtained in chemically treated plots were not significantly better than yields in untreated plots. On this basis, and taking into account the high costs and risks involved, it is concluded that the emphasis placed on pesticide use to control both pests should be reconsidered. Pesticide use, however, could be recommended for exptl. and commercial farms. (AS)

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Holdings
Item type	Current library	Collection	Call number	Copy number	Status	Date due	Barcode	Item holds
Books	CIAT Library Document collection CINFOS	Document Collection CINFOS	28181 (Browse shelf(Opens below))	c.1	Short Loan		100062247

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Se esbozan brevemente la historia y el estado de 2 plagas importantes, Phenacoccus manihoti y Mononychellus tanajoa, en la region productora de yuca de Africa. Se resaltan los resultados de algunos expt. con pesticidas para controlar P. manihoti y M. tanajoa. Generalmente, los rendimientos obtenidos en parcelas tratadas quimicamente no fueron significativamente mejores que los rendimientos en parcelas sin tratar. Con base en esto y en los altos costos y riesgos involucrados, se concluye que se debe reconsiderar el enfasis puesto en el uso de pesticidas para controlar ambas plagas. El uso de pesticidas, sin embargo, podria recomendarse para fincas exptl. y comerciales. (RA-CIAT) spa

Trabajo presentado en el 19th Annual Conference of Entomological Society of Nigeria, Univ. of IFE, ILE, IFE, Oct. 5-9, 1986

The history and status of 2 important pests, Phenacoccus manihoti and Mononychellus tanajoa, in the cassava belt of Africa are briefly outlined. Results of some pesticide expt. to control P. manihoti and M. tanajoa are highlighted. Generally, yields obtained in chemically treated plots were not significantly better than yields in untreated plots. On this basis, and taking into account the high costs and risks involved, it is concluded that the emphasis placed on pesticide use to control both pests should be reconsidered. Pesticide use, however, could be recommended for exptl. and commercial farms. (AS) eng