Paper · 2007

Planting date and row spacing affects grain yield and height of pearl millet Tifgrain 102 in the Southeastern coastal plain of the United States

A.W.H.M. Maas; W W Hanna; B. J. Mullinix

10
claims
20
verbatim quotes
15
citations
1
research areas
—
Not open access

Abstract

Pearl millet (Pennisetum glaucum) is a drought tolerant cereal grain typically grown as a forage crop in the United States. New high-yielding dwarf grain pearl millet hybrids have generated interest in millet as a substitute for maize and sorghum because of its ability to reliably produce grain on sandy, acidic, low fertility soils of the southeastern United States. The objectives of this study were to determine optimum planting date, row spacing, and nitrogen rate for grain production. Rust resistant hybrid Tifgrain 102 was drilled in a split-split plot, randomized complete block design with four replications nested in date. Planting date was the main effect, and there were 7, 8 and 9 planting dates in 2001, 2002 and 2006, respectively. Planting date was split into four row spacings (0.2 m, 0.4 m, 0.5 m and 0.9 m), and further split for two nitrogen levels (90 kg ha -1 and 140 kg ha -1 ). There was a significant (P ≤0.001) interaction of year by planting date for both yield and height. Planting date within years was significant (P ≤0.001) for yield and height. Yield at 0.4 m row spacing was greater than at 0.9 m spacing and nearly significant for yield at 0.5 m spacing and 0.2 m. Height significantly (P ≤0.005) increased with wider row spacing. Yield and height were not affected by nitrogen rate.

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Claims 10

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Year and planting date interacted significantly for grain yield.

Taxon
pearl milletCenchrus americanust0
Treatment
planting datee0
Outcome
yielde0
Qualifier
yeare0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“There was a significant (P ≤0.001) interaction of year by planting date for both yield and height.”

✓ located verbatim in the source · abstract, characters 903–1001 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Year and planting date interacted significantly for height.

Taxon
pearl milletCenchrus americanust0
Treatment
planting datee0
Outcome
heighte0
Qualifier
yeare0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“There was a significant (P ≤0.001) interaction of year by planting date for both yield and height.”

✓ located verbatim in the source · abstract, characters 903–1001 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Within years, planting date significantly affected yield.

Taxon
pearl milletCenchrus americanust0
Treatment
Planting datee0
Outcome
yielde0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Planting date within years was significant (P ≤0.001) for yield and height.”

✓ located verbatim in the source · abstract, characters 1002–1077 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Within years, planting date significantly affected height.

Taxon
pearl milletCenchrus americanust0
Treatment
Planting datee0
Outcome
heighte0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Planting date within years was significant (P ≤0.001) for yield and height.”

✓ located verbatim in the source · abstract, characters 1002–1077 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Yield was greater at 0.4 m than at 0.9 m row spacing.

Taxon
pearl milletCenchrus americanust0
Treatment
0.4 m row spacinge0
Outcome
Yielde0
Direction
greatere0
Comparator
0.9 m spacinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Yield at 0.4 m row spacing was greater than at 0.9 m spacing and nearly significant for yield at 0.5 m spacing and 0.2 m.”

✓ located verbatim in the source · abstract, characters 1078–1199 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Intervention effectobservedoriginal resultnot significant (as stated)measured

Claim · model-written summary

Yield at 0.4 m spacing was nearly significantly greater than at 0.5 m spacing.

Taxon
pearl milletCenchrus americanust0
Treatment
0.4 m row spacinge0
Outcome
yielde0
Direction
greatere0
Comparator
0.5 m spacinge0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Yield at 0.4 m row spacing was greater than at 0.9 m spacing and nearly significant for yield at 0.5 m spacing and 0.2 m.”

✓ located verbatim in the source · abstract, characters 1078–1199 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Intervention effectobservedoriginal resultnot significant (as stated)measured

Claim · model-written summary

Yield at 0.4 m spacing was nearly significantly greater than at 0.2 m spacing.

Taxon
pearl milletCenchrus americanust0
Treatment
0.4 m row spacinge0
Outcome
yielde0
Direction
greatere0
Comparator
0.2 me0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Yield at 0.4 m row spacing was greater than at 0.9 m spacing and nearly significant for yield at 0.5 m spacing and 0.2 m.”

✓ located verbatim in the source · abstract, characters 1078–1199 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Height increased significantly with wider row spacing.

Taxon
pearl milletCenchrus americanust0
Treatment
wider row spacinge0
Outcome
Heighte0
Direction
increasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Height significantly (P ≤0.005) increased with wider row spacing.”

✓ located verbatim in the source · abstract, characters 1200–1265 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen rate did not affect yield.

Taxon
pearl milletCenchrus americanust0
Treatment
nitrogen ratee0
Outcome
Yielde0
Direction
not affectede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Yield and height were not affected by nitrogen rate.”

✓ located verbatim in the source · abstract, characters 1266–1318 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen rate did not affect height.

Taxon
pearl milletCenchrus americanust0
Treatment
nitrogen ratee0
Outcome
heighte0
Direction
not affectede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cenchrus americanus
Cenchrus americanus · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Yield and height were not affected by nitrogen rate.”

✓ located verbatim in the source · abstract, characters 1266–1318 · show in text ↑
t0

“pearl millet”

✓ located verbatim in the source · title, characters 64–76 · show in text ↑

density · yield · Cenchrus americanus (pearl millet)Positive and negative results

38 papers: 32 positive, 6 negative or no effect

31 papers in the same direction as this paper · 6 in the opposite direction

  1. negative
  2. no effect
  3. negative

34 papers more in this group

See all 38 papers →

nitrogen · growth · Cenchrus americanus (pearl millet)Positive and negative results

46 papers: 40 positive, 6 negative or no effect

5 papers in the same direction as this paper · 40 in the opposite direction

  1. positive
  2. positive
  3. positive

42 papers more in this group

See all 46 papers →

nitrogen · yield · Cenchrus americanus (pearl millet)Positive and negative results

150 papers: 144 positive, 6 negative or no effect

5 papers in the same direction as this paper · 144 in the opposite direction

  1. positive
  2. positive
  3. positive

146 papers more in this group

See all 150 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.