Abstract
This study investigated the effect of high humic substance (HS) levels (0, 500, 1000, and 2000 mg HS kg−1) on growth and nutrient concentrations of corn grown on calcareous soils. For these, soil samples were collected from the six different provinces of Turkey. According to the average values, HS levels had no significant effect alone on dry weight, nitrogen (N), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) concentrations. Soil differences significantly affected dry weight, N, Mg, and Cu concentrations (p ≤ 0.05). Looking at HSxsoil interactions on K, Ca, Fe, and Mn concentrations, it could be seen that there was no effect or that the effect was negative. Only plant Fe concentrations obtained from Konya and Urfa provinces were positively affected from HSxsoil interaction. It was concluded that high level of HS had no or negative effect on corn growth and some nutrient concentration under calcareous conditions.
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Claims 6
Claim · model-written summary
Humic substance level had no significant effect on corn dry weight or N, K, Ca, Mg, Fe, Zn, Cu, and Mn concentrations.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- HS levelse0
- Outcome
- dry weight, nitrogen (N), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) concentrationse0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HS levels had no significant effect alone on dry weight, nitrogen (N), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) concentrations”
t0“Corn”
Claim · model-written summary
Soil differences significantly affected corn dry weight and N, Mg, and Cu concentrations.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- dry weight, N, Mg, and Cu concentrationse0
- Value
- p ≤ 0.05e0
- Setting
- Soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil differences significantly affected dry weight, N, Mg, and Cu concentrations (p ≤ 0.05)”
t0“Corn”
Claim · model-written summary
Humic substance by soil interactions had no or negative effects on corn K, Ca, Fe, and Mn concentrations.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- HSxsoil interactionse0
- Outcome
- K, Ca, Fe, and Mn concentrationse0
- Direction
- no effect or that the effect was negativee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HSxsoil interactions on K, Ca, Fe, and Mn concentrations, it could be seen that there was no effect or that the effect was negative”
t0“Corn”
Claim · model-written summary
Humic substance by soil interaction positively affected corn Fe concentration in Konya.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- HSxsoil interactione0
- Outcome
- plant Fe concentrationse0
- Direction
- positively affectede0
- Setting
- Konyae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only plant Fe concentrations obtained from Konya and Urfa provinces were positively affected from HSxsoil interaction”
t0“Corn”
Claim · model-written summary
Humic substance by soil interaction positively affected corn Fe concentration in Urfa.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- HSxsoil interactione0
- Outcome
- plant Fe concentrationse0
- Direction
- positively affectede0
- Setting
- Urfae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only plant Fe concentrations obtained from Konya and Urfa provinces were positively affected from HSxsoil interaction”
t0“Corn”
Claim · model-written summary
High humic substance levels had no or negative effect on corn growth and some nutrient concentrations under calcareous conditions.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- high level of HSe0
- Outcome
- corn growth and some nutrient concentratione0
- Direction
- no or negative effecte0
- Qualifier
- under calcareous conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high level of HS had no or negative effect on corn growth and some nutrient concentration under calcareous conditions”
t0“Corn”
The same questions in other papers
other · growth · Zea mays (maize)Positive and negative results
19 papers in the same direction as this paper · 164 in the opposite direction
- positive
- positive
- positive
180 papers more in this group
See all 184 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.