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Influence of genotype and developmental stage on plant dry matter distribution and shootroot ratio in banana and plantain
(2005)Detailed time studies on the distribution of dry matter within a Musa spp. plants ' root and shoot system have not been done. Hence, the influence of genotype and developmental stage on the root system development, plant dry matter distribution and the shoot-root ratio of field grown Musa spp. plants was assessed in this study. Experiments were done at the International Institute of Tropical Agriculture Onne High Rainfall station, Nigeria in an ultisol soil. Plants were assessed at four weekly ... -
Root and shoot development during the plant crop and the first ratoon of banana and plantain (Musa spp.) with implications for perennial cultivation on degraded Ultisols in southeastern Nigeria
(2006)The effect of cycle on root system and shoot development was studied for two crop cycles (plant crop and first ratoon). The study revealed that shoot and root system development declined from the plant crop to the first ratoon for plants grown on degraded Ultisols in south-eastern Nigeria. -
Maize yield response to Mucuna pruriens and Pueraria phaseoloides cover crop fallow and biomass burning versus mulching in farmer managed onfarm experiments
(2006)Maize was relay cropped with the cover crops Mucuna pruriens or Pueraria phaseoloides for between 1 and 7 consecutive years in three sites, Ngoungoumou, located in an area of low land use intensity (LUI), about 100 km away from the next major market, and at Evendissi and Andok, in a medium LUI area, 15 to 20 km away from the next major market. Maize yield was compared with that in natural fallow, with fallow biomass burned versus retained as mulch. Fallow type had no effect on maize density. Biomass ... -
Identification of constraints to banana production in three ecoregions of Rwanda
(2007)A survey was carried out in 108 fields in Rwanda to identify constraints to banana productivity in three regions: Ruhengeri (young volcanic soils), Gitarama–Butare (soils derived from granitic rocks), and Kibungo (weathered soils from schistose materials). Data were recorded for the single cultivar Intuntu (AAA)EA). We recorded management practices, and measured nutrient contents in plant and soil, root health parameters and nematode populations. Bunch weights were estimated (r2 = 0.6?) using ... -
Recent advances in breeding for Striga resistant extraearly maize for the savannas of West and Central Africa
(2007)Striga hermonthica is a major constraint to increased maize production and productivity in the savannas of West and Central Africa OVCA. The IITA-WECAMAN Maize Program has developed two extra-early source populations and several extra-early varieties, synthetics and inbred lines with resistance/tolerance to drought and/or S. hermonthica, eleven extra-early maturing varieties were evaluated at Ferkessedougou, Abuia and Mokwa in 2002 and at Mokwa and Abuja in 2004 under artificial Striga infestation ... -
Livelihood strategies of resource poor farmers in strigainfested areas of western Kenya
(2007)Striga hermonthica (del) Benth is threatening rural livelihoods in western Kenya where maize is the major food and cash crop. Vulnerability analysis was conducted on a sample of 802 households in eight districts of Nyanza and Western provinces. Farmers perceived Striga as the major cause of poverty and food insecurity. Both household income and child nutrition indicators showed alarming conditions for the majority of households. The coping strategies and informal safety nets were not capable of ... -
Adaptations of cocoa and coffee farmers communities in the heart of remnant pristine forest of east Cameroon to institutional changes
(2006)With support provided by the state, cocoa and coffee are among the main perennial crops providing income to farmers living in the heart of the pristine forest of East Cameroon (Northern part of the Congo Basin). Regular in comes from these perennial crops have enabled farmers not to depend solely on forest resources. But During the 80s and 90s, some mains changes (cocoa and coffee crisis, liberalization of the economy and agricultural sectors and devaluation of local currency) occurred and influenced ... -
Transiting cassava into an urban food and industrial commodity through agroprocessing and marketing driven approaches: lessons from Africa
(2009)The International Institute of Tropical Agriculture (IITA), in partnership with African institutions, is testing a research for development (R4D) approach to develop cassava productivity and agro-industry to reduce poverty and hunger in Africa. During the research phase (1983–1995), agro-processing technologies for making intermediate cassava products such as high quality cassava flour (HQCF) were developed for industrial applications and for making ready-to-eat urban foods. These were tested at ... -
Offseason yam production in Nigeria
(2008)