Abstract
Abstract Lodging can be a detriment to yield and quality of grain sorghum ( Sorghum bicolor (L.) Moench). However, the magnitude of the changes which occur in yield and quality has not been determined. An experiment was conducted to measure the alteration in yield, protein, and test weight of this crop by artificially simulating two types of lodging observed to occur naturally in the field. Plants were manually forced to a 45‐degree angle (root lodging) or the stalk broken in the vicinity of the peduncle node (stalk break) at heading, early dough, and hard dough growth stages. Lodging treatments decreased yield and test weight for all years studied. Results for 1973 showed a general increase in protein concentration from lodged plants, but 1974–75 increases were not significant. Grain yields were lowest in the earliest and most severely lodged treatments. Yield reductions were due primarily to reduced test weights. Total protein production (concentration × yield) was determined by level of grain yield rather than protein concentration of the grain. It was concluded that yield losses occur in lodged plants due to a hindrance of physiological function and this loss is independent of that which may occur mechanically during harvest.
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Claims 8
Claim · model-written summary
Lodging reduced grain yield in all years.
Not reportedComparator
Verbatim
e0“Lodging treatments decreased yield and test weight for all years studied.”
t0“Grain Sorghum”
Claim · model-written summary
Lodging reduced test weight in all years.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lodging treatments decreased yield and test weight for all years studied.”
t0“Sorghum”
Claim · model-written summary
Protein concentration generally increased in lodged plants in 1973.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results for 1973 showed a general increase in protein concentration from lodged plants, but 1974–75 increases were not significant.”
t0“Sorghum”
Claim · model-written summary
Protein concentration increases in 1974–75 were not significant.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results for 1973 showed a general increase in protein concentration from lodged plants, but 1974–75 increases were not significant.”
t0“Sorghum”
Claim · model-written summary
Grain yields were lowest with earliest and most severe lodging.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yields were lowest in the earliest and most severely lodged treatments.”
t0“Sorghum”
Claim · model-written summary
Yield reductions were primarily attributable to reduced test weights.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield reductions were due primarily to reduced test weights.”
t0“Sorghum”
Claim · model-written summary
Total protein production followed grain yield rather than grain protein concentration.
- Outcome
- Total protein productione0
- Qualifier
- rather than protein concentration of the graine0
- Comparator
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total protein production (concentration × yield) was determined by level of grain yield rather than protein concentration of the grain.”
t0“Sorghum”
Claim · model-written summary
The authors attribute lodging yield loss to impaired physiological function, independently of mechanical harvest loss.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was concluded that yield losses occur in lodged plants due to a hindrance of physiological function and this loss is independent of that which may occur mechanically during harvest.”
t0“Sorghum”