Mostrando entradas con la etiqueta Cassava. Mostrar todas las entradas
Mostrando entradas con la etiqueta Cassava. Mostrar todas las entradas

jueves, 17 de marzo de 2016

Adapting AHIPA in Africa - Adaptando la AHIPA en Africa


The CIP researchers are in Benin for a project designed to introduce ahipa, a highly nutritious root crop, as a promising food staple in drought-prone regions of Central and Western Africa. They are discovering that beyond its potential as a healthy food alternative for people, it may become valuable as livestock feed that not only improves farmers’ diets, but also their bottom line.

Ahipa is the legume root produced by the American yam bean (Pachyrhizus spp.). Shaped like a very large radish, there are two types. The low dry matter one has a crunchy, juicy texture and is usually eaten raw. It is a good source of protein, supplies potassium and vitamins C and K, and has a high water content that makes it easy to digest. There is another high dry matter type which is more suitable for cooking and processing.

“Ahipa is an excellent complement or alternative to other common staples. It offers more nutrients than cassava, and it pairs well with vitamin-A rich orange-fleshed varieties of sweet potato,” says Wolfgang Gruneberg, a CIP breeder and geneticist who leads the ahipa program. Ahipa will grow in dry, marginal conditions. And because the plant fixes nitrogen in the soil, it does not require nitrogen fertilizer. The result is a crop that is inexpensive to produce and well suited to the needs of small farmers as an integral part of a sustainable land-use system.

“But ahipa’s potential as livestock feed or for local processing may bring even greater value added to small-scale farmers,” notes Graham Thiele, an economist and Director of the CGIAR Research Program on Roots, Tubers, and Bananas.

CIP is collaborating with agricultural research institutes in Uganda, Burundi, Rwanda, Benin, DR Congo, and the Université Catholique de Louvain in Belgium. They are combining research from Africa, Europe, and Latin America to increase the availability of yam bean collections and breeding lines, identify high-yielding varieties adapted to agro-forestry-based or maize-mixed farming systems, and develop its commercial potential. Impact assessment studies have been integrated, as well, to identify where resources can be used most effectively to maximize benefits and adoption.

What really excites Gruneberg, however, is the prospect of introducing a highly beneficial crop into a new region. “If we see local farmers in Africa adopting ahipa, adapting it to different uses, and benefitting from it, that will be an impressive success, indeed!” he concludes.
Source: http://192.156.137.121:8080/cipotato/press-room/press-releases/adapting-ahipa-in-africa

domingo, 28 de junio de 2015

Yield improvement of CASSAVA in Malawi - Mejoran el rendimiento de la MANDIOCA (YUCA) en Malawi

Photo: https://s-media-cache-ak0.pinimg.com/736x/90/aa/5b/90aa5bff06ad3228124659c2a2b9c51a.jpg


In Malawi (Africa), increasing human population and low productivity of cassava (Manihot esculenta), the second most important food crop after maize, necessitate the intensification of agronomic options for cassava production. Leo Mathias and Vernon H. Kabambe, with Lilongwe University of Agriculture and Natural Resources, conducted a study to evaluate the effects of inorganic fertilizer and cattle manure on cassava growth and yield in Central Malawi

The sweet variety Mbundumali with 9-15 months maturity and potential yield of 25 t/ha was used. From the results, tuber fresh yield was significantly increased by application of both cattle manure and inorganic fertilizer, while there was no significant manure x inorganic fertilizer interaction. 

Tuber fresh yield was maximum at 27.6 t/ha with application of cattle manure at 5 t ha-1, however increasing the rate of cattle manure to 10 tha-1 did not increase the tuber yield further. Fresh tuber yield increased from 22.8 to 29.2 t ha-1 with inorganic fertilizer application. Yield without fertility amendments was 21 t ha-1, suggesting that appropriate amendments may raise yields above potential. There were also significant effects of inorganic fertilizer on branches per plant, tubers per plant and tuber length, while manure had no effect on these variables.
Full report: http://www.academicjournals.org/journal/AJPS/article-abstract/55B5C1C53409
Source: http://www.academicjournals.org/journal/AJPS