Integrated Soil Fertility Management in Bean-Based Cropping Systems of Eastern, Central and Southern Africa

Prevalence of angular leaf spot disease and sources of resistance in common bean in eastern Democratic Republic of Congo

“…Besides, being a potential source of resistance to angular leaf spot, ARA 4 has market-desired characters and is tolerant to multiple stresses, specifically poor soil fertility (Lunze et al, 2002). Varieties MLV059 and COD MLV224/ 94B are breeding lines developed at INERA Mulungu; while varieties LSA 144 and ARA 4 were derived from the CIAT nursery, BILFA (Beans for low soil Fertility in Africa) selected for tolerance to acidic soils (Lunze et al, 2012). These varieties could be promoted in areas where ALS is a constraint.…”

Évaluation agronomique des variétés de haricot volubile riches en micronutriments dans un système intégré d’Agroforesterie sur deux sols contrastés à l’Est de la RD Congo

“…Pourtant les résultats de recherche ont montré que plus de 2.000 à 3.000 kg ha-1 de haricots nains et de 4.000 à 6.000 kg ha-1 de haricots volubiles peuvent être produits (Kanyenga et al, 2016). Les causes de ces faibles rendements dans la province du Sud Kivu sont nombreuses, il s'agit principalement de pratiques agricoles inappropriées avec comme conséquences l'épuisement du sol, les maladies et le changement climatique (Bouwmeester et al, 2009;Lunze et al, 2012;Kanyenga et al, 2016 ). La plupart des agriculteurs brûlent les herbes lors de la préparation de terrain pour le semis, ceci peut avoir comme conséquence, la perte de 40 kg d'N et de 10 kg de S par hectare à chaque saison culturale (Sanginga & Woomer, 2009 ;Civava et al, 2012).…”

Improved production systems for common bean on Phaeozem soil in South-Central Uganda

“…Before planting, triple superphosphate (0-46-0) was banded at 33.6 kg P2O5 ha -1 in IFS and HIS in the 2014B season and at 44.8 kg P2O5 ha -1 in these systems in the 2015A season. Bands were placed in hand dug furrows at a depth of 8 to 10 cm and covered with 2 to 4 cm of soil, similar to the technique described by Lunze et al (2012). Beans were then placed at the recommended depth of 3 to 5 cm (Liebenberg, 2002;Amongi et al, 2014) before being covered with soil using a hand hoe.…”

“…We inoculated seeds prior to planting in HIS and did not apply nitrogen, because beans can fix nitrogen at rates greater than 100 kg ha -1 under optimum conditions (Graham and Ranalli, 1997;Hardarson and Atkins, 2003). Optimum conditions generally occur under P fertilization and liming, which is appropriate to ameliorate low pH or Ca deficiency Lunze et al, 2012;Wortmann et al, 1998b). Management practices and inputs were done to optimize conditions for N fixation in HIS by applying lime (38% Ca) and P fertilizer.…”

“…Fertilizer additions can overcome specific nutrient deficiencies, but fertilizers are expensive investments in sub-Saharan Africa, including rural Uganda, and most farmers use low levels or no fertilizer at all (Bekunda et al, 2002;Chianu et al, 2011;Lunze et al, 2012), contributing to further nutrient depletion of soil. Fertilizing bean can increase root growth providing improved access to soil water (Beebe et al, 2014) and nutrients.…”