The role of legumes in the sustainable intensification of African smallholder agriculture: Lessons learnt and challenges for the future

Vanlauwe, Bernard; Hungría, Mariangela; Kanampiu, Fred; Giller, Ken E.

doi:10.1016/j.agee.2019.106583

Cited by 156 publications

(131 citation statements)

References 86 publications

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“…Annual global estimates of N fixed by legumes in symbiosis with soil rhizobia were reported to be 21.5 Tg (Herridge et al 2008) of which up to 30% is estimated to be returned to soils (Reeves et al 2016). Other reported benefits of including legumes into crop rotations are greater microbial and crop diversity, soil fertility, and reduction of pest incidence (Diatta et al 2016a;Franke et al 2018;Giller 2001;Matusso et al 2014;Singh et al 2020;Vanlauwe et al 2019). In addition, legume crops are an important and economic source of protein, minerals, and vitamins in human diets and animal feed under smallholder agriculture (Diatta et al 2016b;Graham and Vance 2003;Tharanathan and Mahadevamma 2003).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Nitrogen Fixation by Mungbean Genotypes in Different Soil Textures Using 15N Natural Abundance Method

Diatta

Thomason

Abaye

et al. 2020

J Soil Sci Plant Nutr

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Ensuring food and nutritional security in light of high climate variability and a rapidly growing population remains a challenge. Mungbean (Vigna radiata (L.) Wilczek) is a short duration, drought-tolerant, and ureide-exporting legume crop capable of symbiotic atmospheric nitrogen fixation. Estimates of biological N 2 fixation by mungbean in different soil textures have not been extensively studied. We conducted this study to evaluate plant growth and N 2 fixation of five mungbean genotypes (Berken, 8735, IC 8972-1, STB#122, 223) inoculated with Bradyrhizobium spp. and grown on loamy sand and silt loam soils under glasshouse conditions. Mungbean dry matter yield, δ 15 N values, shoot content, amounts of N-fixed, and soil N uptake were all higher on the silt loam soil compared to the loamy sand soil, demonstrating the effects of soil properties on plant growth and N 2 fixation potential. Among genotypes, IC 8972-1 produced the highest biomass (7.85 g plant −1), shoot N content (200 mg plant −1), and soil N uptake (155 mg plant −1) than other genotypes. The significant interaction between soil texture and genotypes for root dry matter and %Ndfa indicates the major role of legume root-nodule bacteria in symbiotic N 2 fixation. This study demonstrated that N 2 fixation in mungbean is affected by both genotypes and soil properties, illustrating the need to consider soil properties in order to maximize N contribution from mungbean to agricultural production systems.

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Section: Introductionmentioning

confidence: 99%

Assessment of Nitrogen Fixation by Mungbean Genotypes in Different Soil Textures Using 15N Natural Abundance Method

Diatta

Thomason

Abaye

et al. 2020

J Soil Sci Plant Nutr

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“…The importance of adequate P for increased legume yield is well documented (Giller and Cadisch, 1995;Didagbé et al, 2014;Ronner et al, 2016). According to Vanlauwe et al (2019), the overall mean effects of inoculation and P on grain yields of soybean when applied alone were often in the region of an extra 0.5t ha −1 of yield.…”

Section: Discussionmentioning

confidence: 99%

“…This exotic strain had outstanding adaptation across the locations with their influence on nodulation, total N fixed and uptake and grain yield. Vanlauwe et al (2019) reported that most exotic strains used in inoculants have broad adaptability with outstanding performance in broad range of soil. The outstanding performance of R25B+IRj2180A may also be due to the superiority of combination of strains R25B and IRj2180A, an inoculant factor that has been reported to increase yield in legumes (Chibeba et al, 2018;Campo et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Vanlauwe et al (2019) reported that most exotic strains used in inoculants have broad adaptability with outstanding performance in broad range of soil. The outstanding performance of R25B+IRj2180A may also be due to the superiority of combination of strains R25B and IRj2180A, an inoculant factor that has been reported to increase yield in legumes (Chibeba et al, 2018;Campo et al, 2009). In terms of compatibility, the indigenous isolate OIa6(c3a) and IDC8 with variety TGx1448-2E produced promising responses on grain yield and amount of N fixed and it would be a good idea to test the performance of the two strains combined on several varieties of soybean.…”

Section: Discussionmentioning

confidence: 99%

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Efficacy of Indigenous Rhizobial Strains for Nitrogen Fixation and Yield of Soyabean (Glycine Max (L.) Merill) in the Rainforest Transition Zone

Oyepero¹,

Olajire²

2020

JAES

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Production of efficient indigenous rhizobial inoculants for seed inoculation can improve soyabean yield and biological N fixation. The performance of indigenous rhizobial isolates: TRC2, IDC8, OISa-6e, R25B, IRj1280A on nodulation, N fixation and yield of soyabean varieties TGx1448-2E, TGx1908-1F and TGx1910-2F were studied in three study sites: University of Ibadan Teaching and Research Farm (UITRF), Idi Ayunre (IA) and Orile Ilugun (OI). Low rhizobial count (< 14 cell g-1 soil) of the sites seemed to favour competitiveness of the inoculated strains against resident rhizobial population for nodule occupancy. Nodulation, grain yield and N fixation were increased by inoculation in IA and UITRF. The indigenous isolates OISa-6e and IDC8 showed relatively high level of compatibility with TGx1448-2E at UITRF and IA with significantly (P<0.05) higher nodulation, grain yield and total N fixed compared to uninoculated plants. Minimum increase of 0.4 t/ha in grain yield and 40 kg/ha N in total N fixed were observed when soybean inoculated with OISa-6e and IDC8 were compared with uninoculated control. Variable soil biological and chemical properties of the study sites and soyabean varietal compatibility with rhizobial strain were critical to the efficiency of rhizobial inoculation. The study revealed the potentials of indigenous rhizobial strains for use as inoculants to increase soyabean production.

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“…Given high variability among farming operations and contexts, site-specific factors will influence the attractiveness of new practices (Pannell et al, 2014;Vanlauwe et al, 2019) and limit the potential success of one-size-fits-all approaches (Palm et al, 2014). Yet, agronomic knowledge is commonly limited or incomplete among smallholders who require training in soil, water, and pest management, marketing and financing strategies, and more.…”

Section: Barriers To Adoptionmentioning

confidence: 99%

Getting Down to Earth (and Business): Focus on African Smallholders' Incentives for Improved Soil Management

Klauser

Negra

2020

Front. Sustain. Food Syst.

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The role of legumes in the sustainable intensification of African smallholder agriculture: Lessons learnt and challenges for the future

Cited by 156 publications

References 86 publications

Assessment of Nitrogen Fixation by Mungbean Genotypes in Different Soil Textures Using 15N Natural Abundance Method

Assessment of Nitrogen Fixation by Mungbean Genotypes in Different Soil Textures Using 15N Natural Abundance Method

Efficacy of Indigenous Rhizobial Strains for Nitrogen Fixation and Yield of Soyabean (Glycine Max (L.) Merill) in the Rainforest Transition Zone

Getting Down to Earth (and Business): Focus on African Smallholders' Incentives for Improved Soil Management

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