Abstract
The objectives of this study were to evaluate seeding date, plant density, moisture availability, and soil N fertility effects on maize ( Zea mays L.) kernel breakage susceptibility. Three hybrids within each of three relative maturity (RM) groups (90, 100, 110 days by Minnesota Relative Maturity Rating System) were grown in separate seeding date and plant density studies at Arlington, WI [Plano silt loam (fine‐silty, mixed, mesic, Typic Argiudoll)], in 1983 and 1984. Maize was seeded four times at 10‐day intervals beginning 1 May. Average densities were 1.75,3.75,5.75, and 7.75 plants m −2 . Hybrids were also evaluated in separate irrigated and dryland trials at Hancock, WI [Plainfield sandy loam (mixed, mesic, Typic Udipsamment)]. In a soil N study, grain samples were collected from an experiment at Arlington in which three N rates (0,11, and 22 g m −2 were applied. Grain was combine‐harvested at 25% kernel moisture (except at Hancock where moistures ranged from 21 to 32%) and dried at 82°C in 1983 and 60°C in 1984. Kernel breakage susceptibility, test weight and kernel weight, volume, density, and grain yield were measured. Delayed planting, high plant densities, and low applied N increased kernel breakage susceptibility. At Hancock, higher kernel breakage susceptibility occurred with irrigated‐ vs. dryland‐produced maize. Kernel physical parameters measured were not closely related to kernel breakage susceptibility, except in the soil N study, where the largest range occurred for each variable. The 110‐day RM hybrids had lower kernel breakage susceptibility than 90‐ and 100‐day RM hybrids.
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Claims 6
Claim · model-written summary
Delayed planting increased maize kernel breakage susceptibility.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed planting, high plant densities, and low applied N increased kernel breakage susceptibility.”
t0“Maize Kernel”
Claim · model-written summary
High plant density increased maize kernel breakage susceptibility.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed planting, high plant densities, and low applied N increased kernel breakage susceptibility.”
t0“Maize Kernel”
Claim · model-written summary
Low applied nitrogen increased maize kernel breakage susceptibility.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed planting, high plant densities, and low applied N increased kernel breakage susceptibility.”
t0“Maize Kernel”
Claim · model-written summary
Irrigated maize had higher kernel breakage susceptibility than dryland maize at Hancock.
- Treatment
- irrigatede0
- Outcome
- kernel breakage susceptibilitye0
- Direction
- highere0
- Comparator
- dryland‐produced maizee0
- Setting
- Hancocke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Hancock, higher kernel breakage susceptibility occurred with irrigated‐ vs. dryland‐produced maize.”
Claim · model-written summary
Kernel physical parameters were generally not closely related to kernel breakage susceptibility.
- Organ / stage
- Kernelt0
- Outcome
- kernel breakage susceptibilitye0
- Direction
- not closely relatede0
- Qualifier
- except in the soil N studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kernel physical parameters measured were not closely related to kernel breakage susceptibility, except in the soil N study, where the largest range occurred for each variable.”
t0“Maize Kernel”
Claim · model-written summary
The 110-day maturity hybrids had lower breakage susceptibility than 90- and 100-day hybrids.
- Material
- 110‐day RM hybridse0
- Outcome
- kernel breakage susceptibilitye0
- Direction
- lowere0
- Comparator
- 90‐ and 100‐day RM hybridse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 110‐day RM hybrids had lower kernel breakage susceptibility than 90‐ and 100‐day RM hybrids.”
t0“Maize Kernel”
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