Cross Rivers, Delta, Edo and Rivers State top most notorious.
Harvests have been smaller and poorer in quality because of prolonged heavy rains.
Rwanda's news agency tweeted a police statement about the death.
What to do with under- or over-ripe kiwi fruit? Turn them into a delicious jam.
"Africa has rallied to cement hard-fought progress to keep its people safe from Ebola,"
Reports from Niger say at least 20 people have been killed and many others wounded.
This is the latest in a string of attacks by suspected Islamist militants.
The discovery in Karusi province is the largest since the government launched a nationwide excavation in January.