Abstract
Sweet corn is planted over a 3-month period in the north central United States to extend availability for fresh market and processing; however, the extent to which development and growth of sweet corn changes during this period is unreported. Field experiments were conducted in 2006 and 2007 to determine the effect of five planting dates, ranging from mid-April to early July, on sweet corn establishment, growth, and yield components. Day length at the time of silking decreased from 15.1 h in the mid-April planting to 13.7 h in the early July planting. Development took 13 to 25 fewer days from emergence to silking for the hybrid ‘BC0805’, an 82-day augmented sugar enhancer endosperm type, as planting was delayed from mid-April to early July. Maximum height generally increased through planting dates with as much as 23% taller plants in early July versus mid-April planted sweet corn. While leaf mass was unaffected by planting date, maximum leaf number and rate of leaf appearance steadily decreased with later planting dates. Lower reproductive and total biomass at silking as well as marketable ear yield components were lowest in the early July planting date and were associated with presence of maize dwarf mosaic virus in leaf samples. In response to environmental conditions, the crop canopy undergoes distinct morphological changes as planting is delayed, and those changes may have implications for crop production.
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Claims 8
Claim · model-written summary
Day length at silking declined from 15.1 h in mid-April planting to 13.7 h in early July planting.
Verbatim
e0“Day length at the time of silking decreased from 15.1 h in the mid-April planting to 13.7 h in the early July planting.”
t0“Sweet Corn”
Claim · model-written summary
BC0805 reached silking 13 to 25 fewer days after emergence with delayed planting.
Verbatim
e0“Development took 13 to 25 fewer days from emergence to silking for the hybrid ‘BC0805’, an 82-day augmented sugar enhancer endosperm type, as planting was delayed from mid-April to early July.”
t0“sweet corn”
Claim · model-written summary
Early July plants were up to 23% taller than mid-April plants.
Verbatim
e0“Maximum height generally increased through planting dates with as much as 23% taller plants in early July versus mid-April planted sweet corn.”
Claim · model-written summary
Leaf mass was unaffected by planting date.
Not reportedComparator
Verbatim
e0“While leaf mass was unaffected by planting date”
t0“sweet corn”
Claim · model-written summary
Maximum leaf number and leaf appearance rate declined with later planting.
- Taxon
- sweet cornt0
- Treatment
- later planting datese0
- Outcome
- maximum leaf number and rate of leaf appearancee0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“maximum leaf number and rate of leaf appearance steadily decreased with later planting dates”
t0“sweet corn”
Claim · model-written summary
Reproductive and total biomass at silking were lowest with early July planting.
- Taxon
- sweet cornt0
- Treatment
- early July planting datee0
- Outcome
- reproductive and total biomass at silkinge0
- Direction
- loweste0
Not reportedComparator
Verbatim
e0“Lower reproductive and total biomass at silking as well as marketable ear yield components were lowest in the early July planting date”
t0“sweet corn”
Claim · model-written summary
Marketable ear yield components were lowest with early July planting.
- Taxon
- sweet cornt0
- Treatment
- early July planting datee0
- Outcome
- marketable ear yield componentse0
- Direction
- loweste0
Not reportedComparator
Verbatim
e0“Lower reproductive and total biomass at silking as well as marketable ear yield components were lowest in the early July planting date”
t0“sweet corn”
Claim · model-written summary
Low biomass and yield components were associated with maize dwarf mosaic virus in leaves.
- Taxon
- sweet cornt0
- Interactor
- maize dwarf mosaic virusMaize dwarf mosaic viruse0pathogen
- Outcome
- Lower reproductive and total biomass at silking as well as marketable ear yield componentse0
Not reportedDirection
Verbatim
e0“Lower reproductive and total biomass at silking as well as marketable ear yield components were lowest in the early July planting date and were associated with presence of maize dwarf mosaic virus in leaf samples”
t0“sweet corn”
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