Abstract
SUMMARY A study designed to investigate the effect of K nutrition on the yield, components of yield and on macro- and micronutrient concentration of maize showed no significant effect of K on yield in forest alfisols derived from basement complex rocks and in savannah alfisols derived from sandstones in the tropics. Potassium addition significantly decreased lodging, but had little influence on cob length, ear weight, shelling percentage or moisture content. Ear-leaf N and K were significantly increased, while Ca and Mg were decreased by K application. All the micronutrient concentrations (Zn, Fe, Mn, Cu) were significantly increased by K application in the forest and savannah zones. Yield was positively correlated with ear-leaf N on both soils.
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Claims 8
Claim · model-written summary
K had no significant effect on maize yield in forest and savannah alfisols.
- Treatment
- Ke0
- Outcome
- yielde0
- Direction
- no significant effecte0
- Setting
- forest alfisols derived from basement complex rocks and in savannah alfisols derived from sandstones in the tropicse0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant effect of K on yield in forest alfisols derived from basement complex rocks and in savannah alfisols derived from sandstones in the tropics.”
t0“Further studies on the response of maize to K fertilizer in the tropics”
Claim · model-written summary
Potassium addition decreased lodging.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium addition significantly decreased lodging”
t0“Further studies on the response of maize to K fertilizer in the tropics”
Claim · model-written summary
Potassium had little influence on cob length, ear weight, and shelling percentage.
- Treatment
- K fertilizert0
- Outcome
- cob length, ear weight, shelling percentagee0
- Direction
- little influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but had little influence on cob length, ear weight, shelling percentage or moisture content.”
t0“Further studies on the response of maize to K fertilizer in the tropics”
Claim · model-written summary
Potassium had little influence on moisture content.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but had little influence on cob length, ear weight, shelling percentage or moisture content.”
t0“Further studies on the response of maize to K fertilizer in the tropics”
Claim · model-written summary
K application increased ear-leaf N and K.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ear-leaf N and K were significantly increased, while Ca and Mg were decreased by K application.”
t0“Further studies on the response of maize to K fertilizer in the tropics”
Claim · model-written summary
K application decreased ear-leaf Ca and Mg.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ear-leaf N and K were significantly increased, while Ca and Mg were decreased by K application.”
t0“Further studies on the response of maize to K fertilizer in the tropics”
Claim · model-written summary
K application increased Zn, Fe, Mn, and Cu concentrations in both zones.
- Treatment
- K applicatione0
- Outcome
- micronutrient concentrations (Zn, Fe, Mn, Cu)e0
- Direction
- increasede0
- Setting
- forest and savannah zonese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the micronutrient concentrations (Zn, Fe, Mn, Cu) were significantly increased by K application in the forest and savannah zones.”
t0“Further studies on the response of maize to K fertilizer in the tropics”
Claim · model-written summary
Maize yield correlated positively with ear-leaf N on both soils.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield was positively correlated with ear-leaf N on both soils.”
t0“Further studies on the response of maize to K fertilizer in the tropics”
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See all 3,908 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.