Abstract
Summary Field experiments were carried out in the early and late growing seasons in the rainforest zone of Nigeria to determine the responses of yield, components of yield and nutrient contents of cow pea to magnesium fertilizer. Yield and components of yield studied were not significantly increased by Mg application but N, P and Zn concentrations were significantly increased, while Mn concentration decreased significantly with applied Mg. Yield was positively correlated with the micronutrient (Zn, Fe, Cu, Mn) concentrations of cow pea. A level of 0·43 m-equiv/100 g of exchangeable Mg or 15% Mg saturation appears adequate for successful cow-pea production in a typical forest zone within the humid tropics.
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Claims 5
Claim · model-written summary
Magnesium application did not significantly increase yield or yield components.
- Taxon
- cow pea
Vigna unguiculatat0 - Treatment
- Mg applicatione0
- Outcome
- Yield and components of yielde0
- Direction
- not significantly increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and components of yield studied were not significantly increased by Mg application”
t0“cow pea”
Claim · model-written summary
Magnesium application significantly increased nitrogen, phosphorus, and zinc concentrations.
- Taxon
- cow peaVigna unguiculatat0
- Treatment
- applied Mge0
- Outcome
- N, P and Zn concentrationse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N, P and Zn concentrations were significantly increased, while Mn concentration decreased significantly with applied Mg.”
t0“cow pea”
Claim · model-written summary
Magnesium application significantly decreased manganese concentration.
- Taxon
- cow peaVigna unguiculatat0
- Treatment
- applied Mge0
- Outcome
- Mn concentratione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N, P and Zn concentrations were significantly increased, while Mn concentration decreased significantly with applied Mg.”
t0“cow pea”
Claim · model-written summary
Cow pea yield was positively correlated with zinc, iron, copper and manganese concentrations.
- Taxon
- cow peaVigna unguiculatae0
- Compound
- micronutrient (Zn, Fe, Cu, Mn)e0
- Outcome
- Yielde0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield was positively correlated with the micronutrient (Zn, Fe, Cu, Mn) concentrations of cow pea.”
Claim · model-written summary
The authors identify 0·43 m-equiv/100 g exchangeable Mg or 15% saturation as adequate for cow pea production.
- Taxon
- cow-peaVigna unguiculatae0
- Outcome
- successful cow-pea productione0
- Value
- 0·43 m-equiv/100 ge0
- Setting
- humid tropicse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A level of 0·43 m-equiv/100 g of exchangeable Mg or 15% Mg saturation appears adequate for successful cow-pea production in a typical forest zone within the humid tropics.”
The same questions in other papers
magnesium atom · yield · Vigna unguiculata (cowpea)Results differ
1 paper in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →magnesium atom · nutrient: content · Vigna unguiculata (cowpea)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
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.