Paper · 1975 · The Journal of Agricultural Science

A note on the effect of genotype, density and row width on the yield and quality of forage maize

R. H. Phipps

11
claims
11
verbatim quotes
10
citations
2
research areas
—
Not open access

Abstract

SUMMARY The results are presented from a factorial experiment on the effects of genotype (Julia, Inra 200 and Caldera 535), density (4·9, 11·0 and 16·7 plants/m 2 ) and row width (70 and 35 cm) on the quantity and quality of maize produced 136 days after emergence. The later maturing the variety, the higher was the dry matter yield, but the lower was the dry matter percentage. There was little advantage in favour of the high density when compared with the medium density, while row width did not markedly affect the production character measured. Both density and variety significantly influenced the ripe ear. The dried grain/ear for the low, medium and high densities was 111, 89 and 74 g respectively. However, at the highest density nitrogen content, dry matter digestibility and digestible organic matter in the dry matter were all slightly reduced. With the exception of magnesium, the mineral contents showed similar trends.

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Claims 11

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Later maturing maize varieties had higher dry matter yield.

Material
varietye0
Outcome
dry matter yielde0
Direction
highere0

Not reportedTaxon

Verbatim

e0

“The later maturing the variety, the higher was the dry matter yield”

✓ located verbatim in the source · abstract, characters 266–333 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Later maturing maize varieties had lower dry matter percentage.

Material
varietye0
Outcome
dry matter percentagee0
Direction
lowere0

Not reportedTaxon

Verbatim

e0

“The later maturing the variety, the higher was the dry matter yield, but the lower was the dry matter percentage.”

✓ located verbatim in the source · abstract, characters 266–379 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

High density offered little advantage over medium density.

Treatment
high densitye0
Outcome
little advantagee0
Direction
little advantagee0
Comparator
medium densitye0

Not reportedTaxon

Verbatim

e0

“There was little advantage in favour of the high density when compared with the medium density”

✓ located verbatim in the source · abstract, characters 380–474 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Row width did not markedly affect the measured production character.

Treatment
row widthe0
Outcome
production charactere0
Direction
did not markedly affecte0

Not reportedTaxonComparator

Verbatim

e0

“row width did not markedly affect the production character measured”

✓ located verbatim in the source · abstract, characters 482–549 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Density significantly influenced ripe ear.

Treatment
densitye0
Outcome
ripe eare0

Not reportedTaxonDirection

Verbatim

e0

“Both density and variety significantly influenced the ripe ear.”

✓ located verbatim in the source · abstract, characters 551–614 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Variety significantly influenced ripe ear.

Material
varietye0
Outcome
ripe eare0

Not reportedTaxonDirection

Verbatim

e0

“Both density and variety significantly influenced the ripe ear.”

✓ located verbatim in the source · abstract, characters 551–614 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Dried grain per ear was 111 g at low density.

Outcome
dried grain/eare0
Value
111, 89 and 74 ge0
Qualifier
lowe0

Not reportedTaxon

Verbatim

e0

“The dried grain/ear for the low, medium and high densities was 111, 89 and 74 g respectively.”

✓ located verbatim in the source · abstract, characters 615–708 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Dried grain per ear declined to 89 g at medium density.

Outcome
dried grain/eare0
Value
111, 89 and 74 ge0
Qualifier
mediume0

Not reportedTaxon

Verbatim

e0

“The dried grain/ear for the low, medium and high densities was 111, 89 and 74 g respectively.”

✓ located verbatim in the source · abstract, characters 615–708 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Dried grain per ear declined to 74 g at high density.

Outcome
dried grain/eare0
Value
111, 89 and 74 ge0
Qualifier
high densitiese0

Not reportedTaxon

Verbatim

e0

“The dried grain/ear for the low, medium and high densities was 111, 89 and 74 g respectively.”

✓ located verbatim in the source · abstract, characters 615–708 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Highest density slightly reduced nitrogen content, dry matter digestibility and digestible organic matter.

Treatment
highest densitye0
Outcome
nitrogen content, dry matter digestibility and digestible organic matter in the dry mattere0
Direction
slightly reducede0

Not reportedTaxonComparator

Verbatim

e0

“at the highest density nitrogen content, dry matter digestibility and digestible organic matter in the dry matter were all slightly reduced”

✓ located verbatim in the source · abstract, characters 718–857 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Mineral contents except magnesium showed similar trends to the decreases at highest density.

Outcome
mineral contentse0
Direction
similar trendse0
Qualifier
exception of magnesiume0

Not reportedTaxon

Verbatim

e0

“With the exception of magnesium, the mineral contents showed similar trends.”

✓ located verbatim in the source · abstract, characters 859–935 · show in text ↑