Bean Improvement for Low Soil Fertility Adaptation in Eastern and Central Africa

Lunze, L.; Kimani, Paul M.; Ngatoluwa, R.; Rabary, Bodovololona; Rachier, G.O.; Ugen, M.M.; Ruganza, Vicky; elkarim, E.E. Awad

doi:10.1007/978-1-4020-5760-1_29

Cited by 18 publications

(25 citation statements)

References 3 publications

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“…Soil amendments are effective at improving soil health and productivity but smallholder farmers often cannot afford the amounts required to correct soil pH and nutrient deficiencies (Lunze et al, 2007). Alternatively, bean cultivars with tolerance to edaphic stresses can make it possible to improve bean yield and profitability on these low fertility and acidic soils by reducing the farmers' dependency on fertilizers and therefore reduce production costs (Lunze et al, 2007;Singh et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Improved production systems for common bean on Ferralsol soil in south-central Uganda

Goettsch¹,

Lenssen²,

Yost³

et al. 2017

Afr. J. Agric. Res.

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Common bean (Phaseolus vulgaris L.) is the most important source of dietary protein in Uganda but current grain yields are low. Production is particularly low on the degraded Ferralsol soils that dominate the landscape because these soils are generally weathered, acidic and infertile. A study was done on a Ferralsol soil in Masaka District, Uganda to compare productivity and economic return to labor and management (ERLM) for four bean cultivars grown under three management systems. The experimental design was a randomized complete block in a split-plot arrangement. Management system was the whole-plot factor and included the Conventional Farmer (CFS), Improved Farmer (IFS), and High Input systems (HIS). Management systems differed for seed fungicide treatment (no vs. yes), seeding density (10 vs. 20 seed m -2 ), plant configuration (scatter vs. rows), fertilizer applications (P, K, Ca, Mg, Zn and S), rhizobium inoculation (no vs. yes), pesticide applications (no vs. yes), and frequency and timing of weeding. Subplots were four common bean cultivars that differed for resistance to foliar pathogens and the ability to tolerate low soil fertility. Increasing management level and planting bean cultivars tolerant to common bean diseases and low soil fertility improved bean grain yield. The only grain yield differences observed were between cultivars in the 2015A season; NABE 14 had greatest grain yield, 168% greater than that of NABE 15. The HIS with NABE 14 (1274 kg ha -1 ), the HIS with NABE 4 (1225 kg ha ); cultivars did not differ. Farmers planting bean on Ferralsol soil can improve yields with higher input systems but the tested systems were not profitable.

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Section: Introductionmentioning

confidence: 99%

Improved production systems for common bean on Ferralsol soil in south-central Uganda

Goettsch¹,

Lenssen²,

Yost³

et al. 2017

Afr. J. Agric. Res.

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show abstract

“…However, it is unknown when adapted cultivars with tolerance to low soil pH will be available for smallholder farmers in rural villages. As stated by Lunze et al (2007), the fast option to soil fertility management is the genetic approach, e.g. tolerant bean cultivars.…”

Section: Cultivar Selection and Management Of Agricultural Inputs Andmentioning

confidence: 99%

“…Low soil fertility and acidity are the most important common bean (Phaseolus vulgaris L.) productivity constraints in East Africa (Lunze et al, 2007). Bean is an important crop worldwide but it is especially important in East Africa where it is a staple crop for dietary protein (Kweka, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Soil amendments are effective at improving soil productivity but smallholder farmers cannot afford the amounts required to correct soil pH and nutrient deficiencies (Lunze et al, 2007). Alternatively, bean cultivars with tolerance to edaphic stresses can make it possible to improved bean yield and profitability on these low fertility and acidic soils by reducing the farmers' dependency on fertilizers and therefore reducing production costs (Singh et al, 2003;Lunze et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Alternatively, bean cultivars with tolerance to edaphic stresses can make it possible to improved bean yield and profitability on these low fertility and acidic soils by reducing the farmers' dependency on fertilizers and therefore reducing production costs (Singh et al, 2003;Lunze et al, 2007). Disease resistant cultivars have been developed to avoid the risk of yield losses but adoption is low .…”

Section: Introductionmentioning

confidence: 99%

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Improved production systems for common bean in south-central Uganda: I. Liddugavu soil, II. Limyufumyufu soil

Goettsch

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Breeding second‐generation biofortified bean varieties for Africa

Kimani

Warsame

2019

Food and Energy Security

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Micronutrient malnutrition is one of the most serious health challenges facing vast sectors of Africa's population, particularly resource‐poor women and children. Development and utilization of drought‐tolerant, biofortified varieties is probably the most effective, sustainable, and potentially long‐lasting strategy for reducing micronutrient deficiencies and coping with frequent droughts. Our objective was to develop second‐generation biofortified bean (Phaseolus vulgaris L.) varieties combining drought tolerance, multiple disease resistance, and higher concentrations of iron and zinc in grain than the first‐generation varieties currently grown by farmers in east, central, and west Africa. Forty‐seven F2 populations segregating for mineral density, resistance to biotic and abiotic stress factors, marketable grain types, and yield potential were developed at Kabete Field Station, and advanced to F4 as population bulks. During the 2010 long rain season, 6,612 F4 single plants were selected and used to establish F4.5 progeny rows during the 2011 short rain season at Kabete. These progenies were evaluated for resistance to angular leaf spot, anthracnose, root rots, and agronomic traits. In 2012, 102 F4.6 lines were evaluated under drought stress and no‐stress conditions at Kabete and Thika. During the 2012 short rain season, selected disease and drought‐tolerant F4.7 lines were evaluated for mineral density and for their agronomic potential at four locations representing major bean production environments. Results showed significant (p < 0.01) variation for mineral density, drought tolerance, disease resistance, growth habit, grain type, and maturity among the populations and their progenies. Iron concentration varied from 30 to 130 ppm. Zinc concentration varied from 10 to 60 ppm. Superior lines were selected from BF01, BF07, BF16, and BF36 populations. Eighty‐four lines had 50% more yield under stress and no‐stress conditions compared with the parental lines, suggesting transgressive segregation. Results indicate that varieties combining high micronutrient density, resistance to diseases and drought, and marketable grain types can be developed from these populations.

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Bean Improvement for Low Soil Fertility Adaptation in Eastern and Central Africa

Cited by 18 publications

References 3 publications

Improved production systems for common bean on Ferralsol soil in south-central Uganda

Improved production systems for common bean on Ferralsol soil in south-central Uganda

Improved production systems for common bean in south-central Uganda: I. Liddugavu soil, II. Limyufumyufu soil

Breeding second‐generation biofortified bean varieties for Africa

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