Abstract
It’s that time of year when corn yield estimations increase. The USDA NASS objective yield survey came out on August 17. This report indicates the third highest yield on record (behind 2016 and 2015) at 188 bushels per acre. Moderate to severe drought conditions are undoubtedly the cause for the reduced yields in Iowa this year. It should be expected that there will be large variation in yield within fields but also from one field to the next depending on hybrid selection, date of planting, and field uniformity. Following are some insights into corn yield components and how and when yield components are influenced by crop stresses such as drought.
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Claims 3
Claim · model-written summary
The cited USDA survey indicated corn yield of 188 bushels per acre, third highest on record.
- Taxon
- Corn
Zea mays subsp. mayst0 - Outcome
- yielde0
- Direction
- third higheste0
- Value
- 188 bushels per acree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This report indicates the third highest yield on record (behind 2016 and 2015) at 188 bushels per acre.”
t0“Corn”
Claim · model-written summary
The author attributes reduced Iowa corn yields that year to moderate to severe drought.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Moderate to severe drought conditionse0
- Outcome
- reduced yieldse0
- Direction
- reducede0
- Setting
- Iowae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate to severe drought conditions are undoubtedly the cause for the reduced yields in Iowa this year.”
t0“Corn”
Claim · model-written summary
The author expects large yield variation within and between corn fields according to hybrid, planting date and uniformity.
- Taxon
- CornZea mays subsp. mayst0
- Material
- hybrid selectione0
- Outcome
- variation in yielde0
- Direction
- largee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there will be large variation in yield within fields but also from one field to the next depending on hybrid selection, date of planting, and field uniformity”
t0“Corn”