Abstract
Land leveling results in severe soil disturbance. Several agronomic practices have been recommended (i.e., poultry litter application) or suggested (i.e., deep tillage) to help restore soil tilth following land leveling. The objective of this study was to determine the effects of poultry litter application and deep tillage on crop response in the first two growing seasons following land leveling of a clay soil in Mississippi Co., AR. Though land leveling in a clay soil significantly altered the magnitude, variability, and spatial distribution of many soil physical, chemical, and biological properties, crop response to poultry litter application and deep tillage was minimal. With the exception of greater soybean yield in plots that did not receive deep tillage compared to those that were deep tilled in the first year after land leveling, neither the application of 1 ton/acre of fresh poultry litter nor deep tillage in both years following leveling resulted in a rice yield response in the second year after leveling. Results indicate that land leveling a clay soil may not cause sufficient surface compaction to allow for a significant positive crop response to deep‐tillage. Results also indicate that 1 ton/acre of fresh poultry litter may be insufficient to produce a short‐term, positive crop response on clay soils.
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Claims 5
Claim · model-written summary
Soybean yield was greater without deep tillage than with deep tillage in the first year.
- Taxon
- soybean
Glycine maxe0 - Treatment
- did not receive deep tillagee0
- Outcome
- soybean yielde0
- Direction
- greatere0
- Qualifier
- first year after land levelinge0
- Comparator
- deep tillede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greater soybean yield in plots that did not receive deep tillage compared to those that were deep tilled in the first year after land leveling”
Claim · model-written summary
Fresh poultry litter produced no rice yield response in year two after leveling.
- Taxon
- rice
Oryza sativae0 - Treatment
- 1 ton/acre of fresh poultry littere0
- Outcome
- rice yielde0
- Direction
- neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither the application of 1 ton/acre of fresh poultry litter nor deep tillage in both years following leveling resulted in a rice yield response in the second year after leveling”
Claim · model-written summary
Deep tillage produced no rice yield response in year two after leveling.
- Taxon
- riceOryza sativae0
- Treatment
- deep tillagee0
- Outcome
- rice yielde0
- Direction
- neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither the application of 1 ton/acre of fresh poultry litter nor deep tillage in both years following leveling resulted in a rice yield response in the second year after leveling”
Claim · model-written summary
Land leveling may not create enough surface compaction for a significant positive tillage response.
Not reportedTaxon
Verbatim
e0“land leveling a clay soil may not cause sufficient surface compaction to allow for a significant positive crop response to deep‐tillage”
t0“Crop Response”
Claim · model-written summary
One ton per acre of fresh poultry litter may be insufficient for a short-term positive crop response on clay soils.
- Taxon
- riceOryza sativae1
- Outcome
- 1 ton/acre of fresh poultry litter may be insufficient to produce a short‐term, positive crop responsee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1 ton/acre of fresh poultry litter may be insufficient to produce a short‐term, positive crop response on clay soils”
e1“rice yield response”
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See all 729 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.