Maize lethal necrosis disease: Evaluating agronomic and genetic control strategies for Ethiopia and Kenya

Lethal necrosis of corn is an ongoing risk in the corn department of eastern and southern Africa

Including resistant varieties in the mainstream of the maize seed system in this area is essential for sustainable MLN control.

Corn lethal necrosis (MLN) was first diagnosed in East Africa in 2010, brings a big threat to its corn-based agri-food system, estimates of Ethiopian losses are $ 261 million, losses in Kenya are 100 million It reached 98 million dollars. This paper reviewed the agricultural and policy choices of MLN and compared the feasibility of using corn bean rotation and MLN resistant germplasm as an important alternative strategy for managing MLN. Based on smallholder production of Kenya and Ethiopia, the results of crop simulation and economic surplus model were used to evaluate which strategy provides the most realistic MLN management method. This paper is concerned that corn is the preferred staple food, although corn - legume rotations are a rational agricultural recommendation and important for the viability of a long - term corn production system. It is worthwhile. Estimated multiplier of Ethiopia is $ 245 million to $ 756 million, Kenya multiplication factor is $ 19.67 billion, and Ethiopia $ 1 million. And 2 million people benefit from Kenya. Given the existence and sustainability of MLN threats, the food and economic security of the corn agricultural economy in eastern Africa will depend largely on the success of the mainstreaming of MLN resistance by the corn seed system.

Some production areas in Kenya adopt corn-free periods (in combination with other methods) to reduce the prevalence of fatal necrosis of corn. This corn-free period suggests that it can reduce the prevalence of corn lethal necrosis. In South Africa, especially Haifelt, there should be the same effect to delay the outbreak even in the cold and corn free winter. Insects thought to be involved in the transmission of fatal necrosis of corn include the following: Frankliniella williamsi, Chaetocnema pulicaria, Diabrotica undecimpunctata, D. lonicornis, western corn D. virgifera, Systena frontalis and Oulema melanopa

Corn lethal necrosis (MLN) was first diagnosed in East Africa in 2010, brings a big threat to its corn-based agri-food system, estimates of Ethiopian losses are $ 261 million, losses in Kenya are 100 million It reached 98 million dollars. This paper reviewed the agricultural and policy choices of MLN and compared the feasibility of using corn bean rotation and MLN resistant germplasm as an important alternative strategy for managing MLN. Based on smallholder production of Kenya and Ethiopia, the results of crop simulation and economic surplus model were used to evaluate which strategy provides the most realistic MLN management method. This paper states that corn - legume rotations are a sound agricultural recommendation, which is essential for the viability of a long - term corn production system, but given that corn is the preferred staple food, it is challenging

Lethal necrosis of corn: Evaluation of agricultural and genetic control strategies in Ethiopia and Kenya

A serious epidemic in Kenya was later diagnosed as fatal necrosis of corn and was first reported in Longisa branch in Bomet district in September 2011. By 2012, symptoms consistent with fatal necrosis of corn were observed in parts of Central Kenya, Ni Ansa, West and Rift Valley. Since then, Rwanda and the Democratic Republic of the Congo have reported this disease. Similar corn symptoms have been reported in Uganda and Tanzania and more recently in South Sudan and Ethiopia. Recent discussions with pathologists in Tanzania have cast doubt that the disease may have occurred in Tanzania's Mtwara, Tanzania, bordering northern Mozambique