Cabbage disease mystery in Ghana
Cabbage is an important crop in Ghana where it grows all year round, right across the country. It is mainly grown for commercial production in Southern Ghana, in Akwapim and Kwahu areas and in the moist high elevations around Tarkwa. Growing cabbage in Ghana is challenging since it can be attacked by a variety of…
Keeping an eye on banana disease
Dr. Fen Beed is an experienced plant pathologist based at the International Institute of Tropical Agriculture (IITA), Dar es Salaam, Tanzania. He leads research for development activities to mitigate the impact of diseases of maize, soybean, cowpea, cassava, banana and vegetables and promotes plant diseases on problematic weeds. The first and critical step to manage…
Cassava virus resistance breakthrough for Africa
One of the worst diseases of the tuber crop, cassava, in sub-Saharan Africa is Cassava brown streak disease (CBSD). Since its resurgence in East Africa in recent years, it is now spreading to Central and Western Africa. The other major disease of cassava in this region, Cassava mosaic disease (CMD), can also cause widespread damage…
Maize disease in Kenya no longer a mystery and being controlled
Update [March 2013]: More information about the pests and viruses associated with Maize Lethal Necrosis disease can be found on the Plantwise Knowledge Bank. In January this year, ProMed-mail reported an undiagnosed disease of maize that had been destroying farmers’ crops in the Rift Valley of Kenya since the previous September. The Ministry of Agriculture…
Where did black sigatoka come from?
Black sigatoka, or black leaf streak disease, a disease of bananas and plantains caused by the fungus Mycosphaerella fijiensis, has caused widespread losses to banana crops over the past 50 years. A new study of the phylogeography of black sigatoka on banana leaves from around the world has helped to elucidate the recent origins of…