[LAGOS] Nigerian farmers who tested new maize crops resistant to the widespread Strigaplant parasiteare so enthusiastic about their increased crop yields thatthey are sellingmoreseeds than the official distribution channels.
The crops were developedin the Nigerian laboratories of theInternational Institute for Agricultural Research (IITA). They dramatically cut maize losses from the root-infecting Striga,or witchweed, during two years of trial cultivation by farmers in Borno State innorthern Nigeria.
Nigeria's Institute for Agricultural Research began distributing the new parasite-resistant maize seeds in December 2008.
Abebe Menkir, the lead scientist on the research project at IITA,told SciDev.Net thatsome farmers in Borno state were already producing large quantities of resistant seedsand selling them on to farmers in and outside the region. He was unable to say how many seeds are being and will be distributed through official channels.
The farmers say they couldn't wait for the official release of seedlings because the variety is successful, cutting losses, says Menkir.
Menkir saidthe next step was to distribute the parasite-resistant maize in other countriesinWest and Central Africa.
The varieties, known asSammaz 15 and 16 contain genesthat diminish the growth of parasitic flowering plants such as Striga,which attaches to the maize root. Both Sammaz varieties tolerate heavy Striga infestations without suffering crop losses.
A normal maize variety without resistance to Striga can sustain from 60 per cent to 100 per cent grain yield loss in farmers' fields that are severely infested, Menkir told SciDev.Net. Sammaz 16 loses just ten per cent of yield in an extreme invasion.
Sammaz 16 is a late-maturing varietyrequiring 110 to 120 days of growth, whereas Sammaz 15 can often be harvestedat 100 days and is more suitable for regions with short growing periods or unpredictable water supplies.
Agronomy researcher Michael Aken'Ova from the faculty of agriculture at theUniversity of Ibadan, said that producing resistant and tolerant cultivars such as Sammaz is the most economically feasible, easily accessible, safe and sustainable approach to combat losses due to Striga, particularly compared to labour-intensive methods such as weeding.
He added that he is sure that the resistant crops will soon make it to the farmers who need them, with the aid of leaflets, radio magazine programmes and messages in local languages.