The African Green Revolution

Nziguheba, Generose; Palm, Cheryl; Berhe, Tadesse; Denning, Glenn; Dicko, Ahmed; Diouf, Omar; Diru, Willy; Flor, Rafael; Frimpong, Fred; Harawa, Rebbie; Kaya, Bocary; Manumbu, Elikana; McArthur, John W.; Mutuo, Patrick K.; Ndiaye, Mbaye; Niang, Abdoulaye; Nkhoma, Phelire; Nyadzi, Gerson; Sachs, Jeffrey D.; Sullivan, Clare; Teklu, Gebrekidan; Tobe, Lekan; Sánchez, Pedro A.

doi:10.1016/b978-0-12-385040-9.00003-7

Cited by 48 publications

(15 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Partial budgeting and profitability analysis were estimated using value cost ratio as explained by [40]. The costs of Teprosyn Mo and Legumefix per hectare were USD 4.25 and USD 10.50 respectively.…”

Section: Data Collection and Statistical Analysismentioning

confidence: 99%

Response of Soybean (Glycine max L.) to Rhizobia Inoculation and Molybdenum Application in the Northern Savannah Zones of Ghana

Asei¹

2015

JPS

View full text Add to dashboard Cite

Abstract:Compatible rhizobia populations are seldom available in soils where soybean has not been grown before.Inoculating soybean seeds with superior rhizobia strains is necessary for nodulation and nitrogen fixation. Ironically, many commercial agricultural products (biological and chemical) claim increases in crop productivity but their efficacy cannot be guaranteed. Thus, three separate on-station trials (Manga, Kpongu and Nyankpala) were conducted at the experimental fields of CSIR-Savannah Agricultural Research Institute (SARI), to ascertain the effectiveness of some commercial microbial inoculant and micronutrient fertilizer for improvement of soybean productivity in the Northern savannah zones of Ghana. Four treatments were used for each study site; Control, Teprosyn Mo, Legumefix and Teprosyn Mo+Legumefix which were laid out in a Randomised Complete Block Design (RCBD) with three replications. Experimental plots measured 4.5 m x 4.5 m. A significant (P < 0.05) response of soybean nodule dry weight to Legumefix was observed in Kpongu and Manga but not Nyankpala. At harvest, Teprosyn Mo+Legumefix, Legumefix and Teprosyn Mo treatments increased soybean grain yield by 205.62%, 135.54% and 110.24% respectively over the control in Manga. In Nyankpala, the application of Legumefix and Teprosyn Mo+Legumefix increased soybean grain yield significantly by 22.43% and 42.10% respectively relative to the control while no significant response was observed in grain yield among treatments at Kpongu. The combined application of Teprosyn Mo+Legumefix was the most economically viable among the treatments (VCR = 2.65).

show abstract

Section: Data Collection and Statistical Analysismentioning

confidence: 99%

Response of Soybean (Glycine max L.) to Rhizobia Inoculation and Molybdenum Application in the Northern Savannah Zones of Ghana

Asei¹

2015

JPS

View full text Add to dashboard Cite

show abstract

“…Most studies in the literature compare and contrast management practices [31][32][33][34] or examine one farming practice across different regions [5,35]. There are relatively few studies that attempt to examine soil degradation at a scale that can encompass the spatial and temporal heterogeneity of farmed landscapes in SSA.…”

Section: Spatial Scalesmentioning

confidence: 99%

“…While the reality of hunger in SSA is undeniable, the nature and extent of soil degradation, and the role it plays in the vicious cycle of poverty, is still under debate [3]. Across SSA, 75 percent of the population depended on subsistence farming at the end of the last century [4,5]. Livelihoods are diversifying [6] and urbanization is on the rise [7], but in the near-term, soils in SSA must currently sustain a largely subsistence population.…”

Section: New Perspectives For Examining Soil Degradation In Sub-saharmentioning

confidence: 99%

The State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions

et al. 2015

Self Cite

View full text Add to dashboard Cite

Abstract:The primary cause of soil degradation in sub-Saharan Africa (SSA) is expansion and intensification of agriculture in efforts to feed its growing population. Effective solutions will support resilient systems, and must cut across agricultural, environmental, and socioeconomic objectives. While many studies compare and contrast the effects of different management practices on soil properties, soil degradation can only be evaluated within a specific temporal and spatial context using multiple indicators. The extent and rate of soil degradation in SSA is still under debate as there are no reliable data, just gross estimates. Nevertheless, certain soils are losing their ability to provide food and essential ecosystem services, and we know that soil fertility depletion is the primary cause. We synthesize data from studies that examined degradation in SSA at broad spatial and temporal scales and quantified multiple soil degradation indicators, and we found clear indications of degradation across multiple indicators. However, different indicators have different trajectories-pH and cation exchange capacity tend to decline linearly, and soil organic carbon and yields non-linearly. Future research should focus on how soil degradation in SSA leads to changes in ecosystem services, and how to manage these soils now and in the future. OPEN ACCESS

show abstract

“…The mean annual temperature (across four years) was 23.5°C at both sites (Nziguheba et al. , Palm et al. ).…”

Section: Methodsmentioning

confidence: 95%

“…Numerous national government agencies and non-government and international organizations currently support programs that provide agricultural inputs at subsidized rates or through rural credit. Recent studies show that local cereal yields may double or even triple where adoption rates of both improved seeds and fertilizers are high (Sanchez et al 2007, Nziguheba et al 2010, Snapp et al 2010, Sanchez 2015.…”

Section: Introductionmentioning

confidence: 99%

Effects of fertilizer on inorganic soil N in East Africa maize systems: vertical distributions and temporal dynamics

Tully

Hickman

McKenna

et al. 2016

Ecological Applications

Self Cite

View full text Add to dashboard Cite

Fertilizer applications are poised to increase across sub‐Saharan Africa (SSA), but the fate of added nitrogen (N) is largely unknown. We measured vertical distributions and temporal variations of soil inorganic N following fertilizer application in two maize (Zea mays L.)‐growing regions of contrasting soil type. Fertilizer trials were established on a clayey soil in Yala, Kenya, and on a sandy soil in Tumbi, Tanzania, with application rates of 0–200 kg N/ha/yr. Soil profiles were collected (0–400 cm) annually (for three years in Yala and two years in Tumbi) to examine changes in inorganic N pools. Topsoils (0–15 cm) were collected every 3–6 weeks to determine how precipitation and fertilizer management influenced plant‐available soil N. Fertilizer management altered soil inorganic N, and there were large differences between sites that were consistent with differences in soil texture. Initial soil N pools were larger in Yala than Tumbi (240 vs. 79 kg/ha). Inorganic N pools did not change in Yala (277 kg/ha), but increased fourfold after cultivation and fertilization in Tumbi (371 kg/ha). Intra‐annual variability in NO−3‐N concentrations (3–33 μg/g) in Tumbi topsoils strongly suggested that the sandier soils were prone to high leaching losses. Information on soil inorganic N pools and movement through soil profiles can h vulnerability of SSA croplands to N losses and determine best fertilizer management practices as N application rates increase. A better understanding of the vertical and temporal patterns of soil N pools improves our ability to predict the potential environmental effects of a dramatic increase in fertilizer application rates that will accompany the intensification of African croplands.

show abstract

The African Green Revolution

Cited by 48 publications

References 31 publications

Response of Soybean (Glycine max L.) to Rhizobia Inoculation and Molybdenum Application in the Northern Savannah Zones of Ghana

Response of Soybean (Glycine max L.) to Rhizobia Inoculation and Molybdenum Application in the Northern Savannah Zones of Ghana

The State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions

Effects of fertilizer on inorganic soil N in East Africa maize systems: vertical distributions and temporal dynamics

Contact Info

Product

Resources

About