Abstract
ABSTRACT Micronutrient deficiencies affect over 2 billion people worldwide, with iron (Fe) and zinc (Zn) deficiencies prevalent in Senegal. These deficiencies result from the low Fe and Zn contents in food crop products. This study examined the effects of micronutrient‐rich organic waste products (OWPs), in combination with local beneficial microorganisms and mycorrhizal fungi, on Fe and Zn concentrations in cowpea ( Vigna unguiculata ) grains and haulms. Cowpea trials were conducted over two contrasting consecutive seasons (wet and dry). A factorial block design with four replications was used. The main results showed significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control. In addition, the observed effects on the yield and Fe and Zn concentrations depended on the type of OWPs and MIs used. These results validate our initial hypothesis regarding the significant increase in Fe and Zn content in cowpea grains and haulms with the combined application of OWPs, which supply micronutrients, and MIs that facilitate the solubilization and transfer of these micronutrients to the plant. Our findings provide novel insights into the agro‐biofortification of cowpeas and can be further developed to guide the selection of OWPs and MIs for use in agroecological biofortification systems.
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Claims 8
Claim · model-written summary
Application of organic waste products with microbial inocula increased cowpea grain yield by up to 2.4-fold compared with the control.
- Taxon
- cowpea
Vigna unguiculatae1 - Organ / stage
- grainse1
- Treatment
- application of OWP combined with microbial inoculae1
- Outcome
- cowpea yielde1
- Direction
- increasese1
- Value
- 2.4e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control”
Claim · model-written summary
Application of organic waste products with microbial inocula increased cowpea haulm yield by up to 3.2-fold compared with the control.
- Taxon
- cowpea
Vigna unguiculatae1 - Organ / stage
- haulmse1
- Treatment
- application of OWP combined with microbial inoculae1
- Outcome
- cowpea yielde1
- Direction
- increasese1
- Value
- 3.2e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control”
Claim · model-written summary
Fe concentrations in cowpea grains rose by up to 48% with organic waste products and microbial inocula compared with the control.
- Taxon
- cowpea
Vigna unguiculatae1 - Organ / stage
- grainse1
- Treatment
- application of OWP combined with microbial inoculae1
- Outcome
- Fe concentrationse1
- Direction
- increaseinferrede1
- Value
- +48%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control”
Claim · model-written summary
Fe concentrations in cowpea haulms rose by up to 259% with organic waste products and microbial inocula compared with the control.
- Taxon
- cowpea
Vigna unguiculatae1 - Organ / stage
- haulmse1
- Treatment
- application of OWP combined with microbial inoculae1
- Outcome
- Fe concentrationse1
- Direction
- increaseinferrede1
- Value
- +259%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control”
Claim · model-written summary
Zn concentrations in cowpea grains rose by up to 28% with organic waste products and microbial inocula compared with the control.
- Taxon
- cowpea
Vigna unguiculatae1 - Organ / stage
- grainse1
- Treatment
- application of OWP combined with microbial inoculae1
- Outcome
- Zn concentrationse1
- Direction
- increaseinferrede1
- Value
- +28%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control”
Claim · model-written summary
Zn concentrations in cowpea haulms rose by up to 265% with organic waste products and microbial inocula compared with the control.
- Taxon
- cowpea
Vigna unguiculatae1 - Organ / stage
- haulmse1
- Treatment
- application of OWP combined with microbial inoculae1
- Outcome
- Zn concentrationse1
- Direction
- increaseinferrede1
- Value
- +265%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control”
Claim · model-written summary
The observed effects on yield and Fe and Zn concentrations depended on the type of organic waste products and microbial inocula used.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- type of OWPs and MIse2
- Outcome
- observed effects on the yield and Fe and Zn concentrationse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control”
e2“In addition, the observed effects on the yield and Fe and Zn concentrations depended on the type of OWPs and MIs used”
Claim · model-written summary
Microbial inocula facilitate the solubilization and transfer of micronutrients to cowpea.
- Taxon
- cowpea
Vigna unguiculatae1 - Outcome
- solubilization and transfer of these micronutrientse3
- Qualifier
- MIs that facilitatee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“significant increases in cowpea yield (up to 2.4‐fold for grains and 3.2‐fold for haulms), Fe concentrations (up to +48% in grains and +259% in haulms), and Zn concentrations (up to +28% in grains and +265% in haulms) with the application of OWP combined with microbial inocula (MIs), compared with those in the control”
e3“MIs that facilitate the solubilization and transfer of these micronutrients to the plant”
The same questions in other papers
inoculation · yield · Vigna unguiculata (cowpea)Results differ
98 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
112 papers more in this group
See all 116 papers →inoculation · nutrient: content · Vigna unguiculata (cowpea)Positive and negative results
40 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
39 papers more in this group
See all 43 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.