Abstract
Synopsis Subsoiling to 16 and 24 inches depth did not increase corn yields in Iowa during 1955, 1956, and 1957. In Illinois, Subsoiling to 12 and 18 inches depth produced a significant corn yield response at the lower depth in only 2 out of 14 experiments in 1955 and 1956. Fertilizer placed deep in the subsoiled channel was not as effective as fertilizer plowed under in the Iowa experiments.
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Claims 3
Claim · model-written summary
Subsoiling to 16 and 24 inches did not increase corn yields in Iowa in 1955-1957.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Subsoiling to 16 and 24 inches depthe0
- Outcome
- corn yieldse0
- Direction
- did not increasee0
- Qualifier
- during 1955, 1956, and 1957e0
- Setting
- Iowae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoiling to 16 and 24 inches depth did not increase corn yields in Iowa during 1955, 1956, and 1957”
Claim · model-written summary
Subsoiling to 12 and 18 inches produced a significant corn yield response at the lower depth in Illinois, in only 2 out of 14 experiments.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Subsoiling to 12 and 18 inches depthe1
- Outcome
- corn yield responsee1
- Qualifier
- in only 2 out of 14 experimentse1
- Setting
- Illinoise1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoiling to 16 and 24 inches depth did not increase corn yields in Iowa during 1955, 1956, and 1957”
e1“In Illinois, Subsoiling to 12 and 18 inches depth produced a significant corn yield response at the lower depth in only 2 out of 14 experiments in 1955 and 1956”
Claim · model-written summary
Fertilizer placed deep in the subsoiled channel was less effective than fertilizer plowed under in corn in Iowa.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Fertilizer placed deep in the subsoiled channele2
- Outcome
- effectivee2
- Direction
- not as effectivee2
- Comparator
- fertilizer plowed undere2
- Setting
- Iowa experimentse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsoiling to 16 and 24 inches depth did not increase corn yields in Iowa during 1955, 1956, and 1957”
e2“Fertilizer placed deep in the subsoiled channel was not as effective as fertilizer plowed under in the Iowa experiments”
The same questions in other papers
tillage · yield · Zea mays (maize)Positive and negative results
811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative
- no effect
- no effect
- negative
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.