Abstract
Abstract Across the semiarid regions of West Africa, cowpea ( Vigna unguiculata (L.) Walp) varieties grown by farmers are either grain‐ or forage‐only, and often fields are not fertilized. Information regarding profitability of dual‐purpose over traditional varieties and fertilizer application in cowpea production system is limited. The main objective of this study was to quantify the economic value of newly released dual‐purpose and forage cowpea varieties and fertilizer inputs across the Senegalese peanut basin. This field study was conducted across three locations in Senegal (Bambey, Boulel, and Darou Mousty) in 2021 and 2022. Treatments were 20 cowpea varieties in the main plot and two levels of fertilizer (an unfertilized control and fertilized) in the subplot. Cowpea varieties E‐BC4STR1, E‐BC4STR5, E‐BC4STR11, Kelle, and Melakh had relatively greater grain yields (average 429–474 kg ha −1 ) in all environments. Forage varieties 66‐35F and 58‐74F produced the most forage (average 2353 and 1717 kg ha −1 ) yields across environments. Fertilizer‐NPK application increased grain yield by 22%–40% in most environments. Unlike grain yield, varietal effects on forage yields occurred only with fertilizer application. Dual‐purpose cowpea varieties E‐BC4STR1, E‐BC4STR2, E‐BC4STR5, and E‐BC4STR11 had a stable, significant economic value in our study compared with grain‐only variety Yacine (traditional variety) or forage variety 66‐35F. Fertilizer‐NPK increased net revenue in four out of six environments. We conclude that using dual‐purpose cowpea varieties provided significant economic advantage over traditional varieties, and application of fertilizer further increased the economic value. However, further studies are needed to determine the economically optimal fertilizer rate.
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Claims 7
Claim · model-written summary
Five named cowpea varieties had relatively greater grain yield averaging 429–474 kg ha −1.
- Taxon
- Cowpea
Vigna unguiculatat0 - Material
- E‐BC4STR1, E‐BC4STR5, E‐BC4STR11, Kelle, and Melakhe0
- Outcome
- grain yieldse0
- Direction
- greatere0
- Value
- 429–474 kg ha −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cowpea varieties E‐BC4STR1, E‐BC4STR5, E‐BC4STR11, Kelle, and Melakh had relatively greater grain yields (average 429–474 kg ha −1 ) in all environments”
t0“cowpea”
Claim · model-written summary
Forage variety 66‐35F averaged 2353 kg ha −1 forage yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage varieties 66‐35F and 58‐74F produced the most forage (average 2353 and 1717 kg ha −1 ) yields across environments”
t0“cowpea”
Claim · model-written summary
Forage variety 58‐74F averaged 1717 kg ha −1 forage yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forage varieties 66‐35F and 58‐74F produced the most forage (average 2353 and 1717 kg ha −1 ) yields across environments”
t0“cowpea”
Claim · model-written summary
Fertilizer NPK increased grain yield by 22%–40% in most environments.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Fertilizer‐NPK applicatione0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 22%–40%e0
- Qualifier
- most environmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizer‐NPK application increased grain yield by 22%–40% in most environments”
t0“cowpea”
Claim · model-written summary
Variety affected forage yield only with fertilizer application.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- fertilizer applicatione0
- Outcome
- forage yieldse0
- Qualifier
- onlye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“varietal effects on forage yields occurred only with fertilizer application”
t0“cowpea”
Claim · model-written summary
Four dual-purpose varieties had stable, significant economic value against traditional grain and forage comparators.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- E‐BC4STR1, E‐BC4STR2, E‐BC4STR5, and E‐BC4STR11e0
- Outcome
- economic valuee0
- Comparator
- grain‐only variety Yacine (traditional variety) or forage variety 66‐35Fe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dual‐purpose cowpea varieties E‐BC4STR1, E‐BC4STR2, E‐BC4STR5, and E‐BC4STR11 had a stable, significant economic value in our study compared with grain‐only variety Yacine (traditional variety) or forage variety 66‐35F”
t0“cowpea”
Claim · model-written summary
Fertilizer NPK increased net revenue in four of six environments.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Fertilizer‐NPKe0
- Outcome
- net revenuee0
- Direction
- increasede0
- Value
- four out of six environmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizer‐NPK increased net revenue in four out of six environments”
t0“cowpea”
The same questions in other papers
fertilization · yield · Vigna unguiculata (cowpea)Positive and negative results
274 papers in the same direction as this paper · 15 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- positive
288 papers more in this group
See all 292 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.