Abstract:Depuis l’introduction de la canne à sucre au Maroc dans les années 70, les ravageurs rencontrés sur cette culture étaient jusqu’à présent tous considérés d’importance mineure, à l’exception de la sésamie (Sesamia nonagrioides) qui peut occasionnellement causer des dégâts par ses infestations sporadiques et irrégulières. Mais avec l’identification en Novembre 2006 d’un nouveau puceron de couleur jaunâtre connu sous le nom de Sipha flava, la situation pourrait devenir plus qu’alarmante. En effet, S. flava est pa… Show more
“…This study reports for the first time the occurrence of YSA in the Tanzanian sugar industry. Previous studies in African countries (Adbelmajid 2008;Way et al 2013) did not report YSA infestations in Tanzania. This indicates that the spreading rate of this pest to African countries might have increased over the years.…”
Section: Effects Of Ysa In Different Sugarcane Varietiesmentioning
confidence: 77%
“…The yellow sugarcane aphid (YSA), Sipha flava Forbes (Homoptera: Aphididae) is native to North America, and occurs in temperate and subtropical regions (Wilson 2019). Its presence on African sugarcane was reported in Morocco in November 2006 (Adbelmajid 2008). It was then recorded in southern Africa in May 2013 (South Africa) and subsequently in Swaziland, Zimbabwe, Malawi and Zambia (Way et al 2015).…”
The yellow sugarcane aphid (YSA), Sipha flava Forbes (Homoptera: Aphididae) is an invasive insect pest of many graminaceous plants which include cultivated crops, like sorghum, sugarcane, rice, maize and several species within non-cultivated genera e.g. Digitaria, Panicum, Paspalum, and Pennisetum. A survey conducted in the Kagera region indicated an infestation by YSA in nine sugarcane varieties grown. This pest causes damage to leaves leading to yellow, purple and red discoloration. This is the first report of YSA infestation in the Tanzanian sugarcane industry. Efforts to develop control measures are still in progress.
“…This study reports for the first time the occurrence of YSA in the Tanzanian sugar industry. Previous studies in African countries (Adbelmajid 2008;Way et al 2013) did not report YSA infestations in Tanzania. This indicates that the spreading rate of this pest to African countries might have increased over the years.…”
Section: Effects Of Ysa In Different Sugarcane Varietiesmentioning
confidence: 77%
“…The yellow sugarcane aphid (YSA), Sipha flava Forbes (Homoptera: Aphididae) is native to North America, and occurs in temperate and subtropical regions (Wilson 2019). Its presence on African sugarcane was reported in Morocco in November 2006 (Adbelmajid 2008). It was then recorded in southern Africa in May 2013 (South Africa) and subsequently in Swaziland, Zimbabwe, Malawi and Zambia (Way et al 2015).…”
The yellow sugarcane aphid (YSA), Sipha flava Forbes (Homoptera: Aphididae) is an invasive insect pest of many graminaceous plants which include cultivated crops, like sorghum, sugarcane, rice, maize and several species within non-cultivated genera e.g. Digitaria, Panicum, Paspalum, and Pennisetum. A survey conducted in the Kagera region indicated an infestation by YSA in nine sugarcane varieties grown. This pest causes damage to leaves leading to yellow, purple and red discoloration. This is the first report of YSA infestation in the Tanzanian sugarcane industry. Efforts to develop control measures are still in progress.
To find sustainable ways to protect its sugarcane areas from the key pest Sipha flava (Hemiptera: Aphididae) in north Tanzania, the local company TPC Limited funded a 6 months project in coordination with the French Agricultural Research Centre for International Development (CIRAD) to assess different agroecological practices, such as the use of companion plants around sugarcane fields. In this study, the influence of the flowering species Tithonia diversifolia located at the field edges as a potential banker plant for conservation biological control of the yellow sugarcane aphid was evaluated. Predatory species were identified by direct capture and/or regular observations and the intensity of aphid damage was evaluated through number of colonies. Twenty-four aphid predator species were identified being hosted by T. diversifolia, and the vicinity of this plant reduced by 86% the number of S. flava colonies in the sugarcane edges. These species belonged mostly to family Coccinellidae (ladybugs), Syrphidae (hoverflies), Chrysopidae (green lacewings), Dolichopodidae (long legged flies). This is the first paper evaluating T. diversifolia’s potential as a banker plant in sugarcane crops for pest control.
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