Diagnosis of crop secondary and micro-nutrient deficiencies in sub-Saharan Africa

Wortmann, Charles S.; Kaizzi, Kayuki C.; Maman, Nouri; Cyamweshi, Athanase R.; Dicko, Mohamed; Garba, Maman; Milner, Maribeth; Senkoro, Catherine J.; Tarfa, Bitrus Dawi; Tettah, Francis; Kibunja, C.N.; Munthali, Moses Wazingwa; Nalivata, Patson C.; Nkonde, Davy; Nabahungu, Léon; Ouattara, Korodjouma; Sermé, Idriss

doi:10.1007/s10705-018-09968-7

Cited by 36 publications

(39 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mean yield response to MgSZnB was large in Burkina Faso, but not in Nigeria. This inconsistency agrees with results reported previously (Kihara et al., 2017; Wortmann et al., 2019). It appears that compost supplied key nutrients as the response to MgSZnB was greater with 0 Mg ha −1 than with 5 Mg ha −1 compost in Burkina Faso.…”

Section: Discussionsupporting

confidence: 93%

“…The frequency of occurrence of positive yield responses in sub‐Saharan Africa was 49% for S, 23% for Zn, 11.5% for micronutrient combinations, and <10% for Cu, Mo, Fe, and B individually (Kihara et al., 2017). In this region of West Africa, soil test results indicated low availability of Zn, Cu, and B (Wortmann et al., 2019). Foliar tissue analyses indicated low S and Zn but generally adequate availability of Mg, Cu, and B. Nonlegume yield increases of >5% occurred with Mg–S–Zn–B (MgSZnB) with a 70% frequency.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Maize response to applied nutrients for West African savannas

et al. 2020

Self Cite

View full text Add to dashboard Cite

Maize (Zea mays L.) grain production increased by 428% in Burkina Faso and 82%in Nigeria during the past 20 years primarily due to increased production area. To improve profitability, yield ha −1 needs to be increased. Yield response functions for nitrogen (N), phosphorus (P), and potassium (K) and response to a Mg-S-Zn-B (MgSZnB) treatment were determined from results of 16 studies conducted in the Sudanian and Guinean savannas in 2014 and 2015. Mean grain yield with no fertilizer applied and mean response to the economically optimum N rate (EONR) were 0.82 and 2.18 Mg ha −1 in Burkina Faso and 3.35 and 0.48 Mg ha −1 in Nigeria. There was little response to P and K. The EONR ranged from 45 to >120 kg ha −1 for Burkina Faso, with higher EONR for Luvisol compared with Ferralsol soil.The mean EONR for Nigeria was only 24 kg ha −1 . The results indicated high profit potential for N application at the EONR in Burkina Faso, but less potential in Nigeria despite higher yields. Yield increases and net return to N could be increased by 72% for financially constrained farmers by applying the same amount of fertilizer N at 50% EONR to twice as much land. Yield was increased by 36% with compost and 40% with MgSZnB application in Burkina Faso but with no effects in Nigeria. The response to MgSZnB requires further investigation in Burkina Faso to optimize nutrient-specific responses. Inconsistent responses to P indicate a new for more research.Abbreviations: EOR, economically optimal rate; EONR, the economically optimal N rate; MgSZnB, fertilizer treatment of magnesium, sulfur, zinc, and boron; SY, site-year.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Maize response to applied nutrients for West African savannas

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…This has led to high P fixation, making P a limiting factor to crop production. Furthermore, uptake and utilization of macronutrient (mostly N, P and K) is affected by the low availability of secondary nutrients [calcium (Ca), magnesium (Mg) and sulfur (S)] and most micronutrients in soils ( Tittonell et al, 2008a ; Wortmann et al, 2019 ). Despite this situation, most farmers do not apply organic matter, which could help to replenish some of the secondary nutrients and micronutrients into the soil through mineralization ( Baligar et al, 2001 ; Grigatti et al, 2015 ; Ch’Ng et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Exploring Black Soldier Fly Frass as Novel Fertilizer for Improved Growth, Yield, and Nitrogen Use Efficiency of Maize Under Field Conditions

et al. 2020

View full text Add to dashboard Cite

Black soldier fly frass fertilizer (BSFFF) is increasingly gaining momentum worldwide as organic fertilizer. However, research on its performance on crop production remains largely unknown. Here, we evaluate the comparative performance of BSFFF and commercial organic fertilizer (SAFI) on maize (H513) production. Both fertilizers were applied at the rates of 0, 2.5, 5, and 7.5 t ha-1 , and 0, 30, 60, and 100 kg nitrogen (N) ha-1. Mineral fertilizer (urea) was also applied at 0, 30, 60 and 100 kg N ha-1 to establish the N fertilizer equivalence (NFE) of the organic fertilizers. Maize grown in plots treated with BSFFF had the tallest plants and highest chlorophyll concentrations. Plots treated with 7.5 t ha-1 of BSFFF had 14% higher grain yields than plots treated with a similar rate of SAFI. There was a 27% and 7% increase in grain yields in plots treated with 100 kg N ha-1 of BSFFF compared to those treated with equivalent rates of SAFI and urea fertilizers, respectively. Application of BSFFF at 7.5 t ha-1 significantly increased N uptake by up to 23% compared to the equivalent rate of SAFI. Likewise, application of BSFFF at 100 kg N ha-1 increased maize N uptake by 76% and 29% compared to SAFI and urea, respectively. Maize treated with BSFFF at 2.5 t ha-1 and 30 kg N ha-1 had higher nitrogen recovery efficiencies compared to equivalent rates of SAFI. The agronomic N use efficiency (AE N) of maize treated with 2.5 t ha-1 of BSFFF was 2.4 times higher than the value achieved using an equivalent rate of SAFI. Also, the AE N of maize grown using 30 kg N ha-1 was 27% and 116% higher than the values obtained using equivalent rates of SAFI and urea fertilizers, respectively. The NFE of BSFFF (108%) was 2.5 times higher than that of SAFI. Application rates of 2.5 t ha-1 and 30 kg N ha-1 of BSFFF were found to be effective in improving maize yield, while double rates of SAFI were required. Our findings demonstrate that BSFFF is a promising and sustainable alternative to commercial fertilizers for increased maize production.

show abstract

“…Critical values for soil test nutrient availability with Mehlich 3 extraction have not been verified for tropical soils of Africa (Garba, Serme, & Wortmann, ). Considering critical values determined elsewhere, however, the soil test results indicate generally adequate Mg and S availability, but low availability of Zn for all sites, and low B at Kanyonyomba, Rwasave, and Rusuli (Wortmann et al., ).…”

Section: Resultsmentioning

confidence: 78%

Lowland rice yield and profit response to fertilizer application in Rwanda

Nabahungu¹,

Cyamweshi

Kayumba

et al. 2020

Agronomy Journal

Self Cite

View full text Add to dashboard Cite

Rice (Oryza sativa) production in Rwanda increased by 70% while yield ha −1 decreased during the past decade. Yield has biotic and abiotic constraints including inadequate nutrient supply. Yield response functions for N, P, and K were determined in eight marshlands grouped into four clusters. Additional treatment allowed for the diagnosis of response to Mg-S-Zn-B (MgSZnB). Rice grain yield with no fertilizer applied was 2.27 Mg ha −1 . Mean yield increases were 2.35, 1.53, and 1.71 Mg ha −1 with N, P, and K application, respectively. The mean economically optimal rates (EOR) were 58 to >150, 11-30, and 21-35 kg ha −1 for N, P, and K, respectively, depending on cluster and the cost of fertilizer. Yield responses to nutrient rates were similar across marshland clusters, and a single response function for each of P and K can serve all four clusters, while the response to N differed for Cluster B compared with A, BC, and C. Net returns to applied P and K were greater than for N, but the application of N is likely needed for such responses to P and K. The MgSZnB resulted in a mean grain yield increase of 1.72 Mg ha −1 with increases in all marshlands, but the information was not sufficient to determine which nutrients of MgSZnB were deficient or their optimal application rates. Fertilizer use can be very profitable for rice production in Rwanda. Profit can be enhanced with the application at less than EOR when fertilizer use is financially constrained.Abbreviations: AEZ, agro-ecological zone; CP, kg of rice grain required to equal the cost of 1 kg of nutrient use; EOR, economically optimal rate of nutrient application; MgSZnB, a diagnostic package of Mg, S, Zn, and B.

show abstract

Diagnosis of crop secondary and micro-nutrient deficiencies in sub-Saharan Africa

Cited by 36 publications

References 33 publications

Maize response to applied nutrients for West African savannas

Maize response to applied nutrients for West African savannas

Exploring Black Soldier Fly Frass as Novel Fertilizer for Improved Growth, Yield, and Nitrogen Use Efficiency of Maize Under Field Conditions

Lowland rice yield and profit response to fertilizer application in Rwanda

Contact Info

Product

Resources

About