Abstract
Synopsis Subsoil shattering alone on Mexico silt loam depressed crop yields. Applications of lime or phosphate to the plow sole before shattering was slightly beneficial, the residual effects for alfalfa lasting several years. Subsoil applications of lime and triple superphosphate in subsoiler clefts or by deep plowing gave significant corn or alfalfa yield increases in some cases. However, if the soil surface was adequately fertilized the increases over surface treatment alone were small and of questionable value.
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Claims 6
Claim · model-written summary
Subsoil shattering alone depressed crop yields on Mexico silt loam.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- Subsoil shattering alonee0
- Outcome
- crop yieldse0
- Direction
- depressede0
- Setting
- Mexico silt loame0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoil shattering alone on Mexico silt loam depressed crop yields”
t0“corn or alfalfa yield increases”
Claim · model-written summary
Lime at the plow sole before shattering was slightly beneficial with lasting alfalfa residual effects.
- Taxon
- alfalfa
Medicago sativae0 - Treatment
- limee0
- Outcome
- residual effects for alfalfae0
- Direction
- beneficiale0
- Value
- several yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of lime or phosphate to the plow sole before shattering was slightly beneficial, the residual effects for alfalfa lasting several years”
Claim · model-written summary
Phosphate at the plow sole before shattering was slightly beneficial with lasting alfalfa residual effects.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- phosphatee0
- Outcome
- residual effects for alfalfae0
- Direction
- beneficiale0
- Value
- several yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of lime or phosphate to the plow sole before shattering was slightly beneficial, the residual effects for alfalfa lasting several years”
Claim · model-written summary
Deep subsoil lime increased corn yields significantly in some cases.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- limee0
- Outcome
- corne0
- Direction
- increasese0
- Qualifier
- in some casese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoil applications of lime and triple superphosphate in subsoiler clefts or by deep plowing gave significant corn or alfalfa yield increases in some cases”
Claim · model-written summary
Deep subsoil triple superphosphate increased alfalfa yields significantly in some cases.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- triple superphosphatee0
- Outcome
- alfalfa yielde0
- Direction
- increasese0
- Qualifier
- in some casese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoil applications of lime and triple superphosphate in subsoiler clefts or by deep plowing gave significant corn or alfalfa yield increases in some cases”
Claim · model-written summary
Adequate surface fertilization made gains over surface treatment small and of questionable value.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- increasese0
- Direction
- smalle0
- Qualifier
- if the soil surface was adequately fertilizede0
- Comparator
- surface treatment alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“if the soil surface was adequately fertilized the increases over surface treatment alone were small and of questionable value”
t0“corn or alfalfa yield increases”
The same questions in other papers
phosphorus · yield · Medicago sativa (alfalfa)Results differ
53 papers in the same direction as this paper · 13 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
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See all 68 papers →phosphorus · organism · Medicago sativa (alfalfa)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
lime · organism · Zea mays (maize)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →lime · organism · Medicago sativa (alfalfa)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
4 papers more in this group
See all 8 papers →tillage · yield · Zea mays (maize)Positive and negative results
286 papers in the same direction as this paper · 812 in the opposite direction
- positive
- positive
- positive
1,095 papers more in this group
See all 1,099 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.