Paper · 1988 · Journal of Agronomy and Crop Science

Effects of Shading Densities on the Agronomic and Physiological Characters of Two Sugarbeet Cultivars

M. O. Ghandorah; M. M. El‐Rouby; F. A. Al‐Saad; et al.

6
claims
30
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

Abstract This study was carried out at the Agricultural Experiment Station of King Saud University near Riyadh (26° N, 46° E) during the 1984/85 season to study the effect of shading densities on the agronomic and growth parameters of sugarbeet. Two cultivars were grown under three shading nets with densities of 37, 50 and 70 % in addition to the control (0 % shading = normal sunlight condition). The results indicated that shading affected the growth and the weight of sugarbeet plants and the effects were function of shading density. Root weights were drastically reduced by increasing shading density, whereas top weights were less affected. Increasing shading density resulted in a significant increase in specific leaf area, leaf area ratio while it decreased leaf area index, root weight ration, net assimilation rate and crop growth rate for both cultivars. The interaction between shading densities and sampling dates was significant for most of the studied characters, while that between cultivars and shading densities was significant for root weight and crop growth rates only.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 6

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Greater shade reduced root weight drastically.

Treatment
increasing shading densitye0e1e2e3e4
Outcome
Root weightse0e1e2e3e4
Direction
reducede0e1e2e3e4
Comparator
controle0e1e2e3e4
Setting
Agricultural Experiment Station of King Saud University near Riyadhe0e1e2e3e4

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

Beta vulgaris subsp. vulgaris
Beta vulgaris subsp. vulgaris · TaxonQuadell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Root weights were drastically reduced by increasing shading density”

✓ located verbatim in the source · abstract, characters 540–607 · show in text ↑
e1

“Effects of Shading Densities on the Agronomic and Physiological Characters of Two Sugarbeet Cultivars”

✓ located verbatim in the source · title, characters 0–101 · show in text ↑
e2

“Two cultivars were grown under three shading nets with densities of 37, 50 and 70 % in addition to the control (0 % shading = normal sunlight condition).”

✓ located verbatim in the source · abstract, characters 246–399 · show in text ↑
e3

“This study was carried out at the Agricultural Experiment Station of King Saud University near Riyadh (26° N, 46° E)”

✓ located verbatim in the source · abstract, characters 9–125 · show in text ↑
e4

“Root weights were drastically reduced by increasing shading density, whereas top weights were less affected.”

✓ located verbatim in the source · abstract, characters 540–648 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Top weights were less affected by shade than root weights.

Treatment
shading densitye0e1e2e3e4
Outcome
top weightse0e1e2e3e4
Direction
less affectede0e1e2e3e4
Comparator
Root weightse0e1e2e3e4

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

Beta vulgaris subsp. vulgaris
Beta vulgaris subsp. vulgaris · TaxonQuadell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“whereas top weights were less affected.”

✓ located verbatim in the source · abstract, characters 609–648 · show in text ↑
e1

“Effects of Shading Densities on the Agronomic and Physiological Characters of Two Sugarbeet Cultivars”

✓ located verbatim in the source · title, characters 0–101 · show in text ↑
e2

“Two cultivars were grown under three shading nets with densities of 37, 50 and 70 % in addition to the control (0 % shading = normal sunlight condition).”

✓ located verbatim in the source · abstract, characters 246–399 · show in text ↑
e3

“This study was carried out at the Agricultural Experiment Station of King Saud University near Riyadh (26° N, 46° E)”

✓ located verbatim in the source · abstract, characters 9–125 · show in text ↑
e4

“Root weights were drastically reduced by increasing shading density, whereas top weights were less affected.”

✓ located verbatim in the source · abstract, characters 540–648 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Increasing shade significantly increased specific leaf area and leaf area ratio.

Treatment
Increasing shading densitye0e1e2e3e4
Outcome
specific leaf area, leaf area ratioe0e1e2e3e4
Direction
increasee0e1e2e3e4
Comparator
controle0e1e2e3e4

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

Beta vulgaris subsp. vulgaris
Beta vulgaris subsp. vulgaris · TaxonQuadell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Increasing shading density resulted in a significant increase in specific leaf area, leaf area ratio”

✓ located verbatim in the source · abstract, characters 649–749 · show in text ↑
e1

“Effects of Shading Densities on the Agronomic and Physiological Characters of Two Sugarbeet Cultivars”

✓ located verbatim in the source · title, characters 0–101 · show in text ↑
e2

“Two cultivars were grown under three shading nets with densities of 37, 50 and 70 % in addition to the control (0 % shading = normal sunlight condition).”

✓ located verbatim in the source · abstract, characters 246–399 · show in text ↑
e3

“This study was carried out at the Agricultural Experiment Station of King Saud University near Riyadh (26° N, 46° E)”

✓ located verbatim in the source · abstract, characters 9–125 · show in text ↑
e4

“Root weights were drastically reduced by increasing shading density, whereas top weights were less affected.”

✓ located verbatim in the source · abstract, characters 540–648 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing shade decreased leaf area index, root weight ratio, net assimilation rate and crop growth rate.

Treatment
shading densitye0e1e2e3e4
Outcome
leaf area index, root weight ration, net assimilation rate and crop growth ratee0e1e2e3e4
Direction
decreasede0e1e2e3e4
Comparator
controle0e1e2e3e4

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

Beta vulgaris subsp. vulgaris
Beta vulgaris subsp. vulgaris · TaxonQuadell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“it decreased leaf area index, root weight ration, net assimilation rate and crop growth rate for both cultivars.”

✓ located verbatim in the source · abstract, characters 756–868 · show in text ↑
e1

“Effects of Shading Densities on the Agronomic and Physiological Characters of Two Sugarbeet Cultivars”

✓ located verbatim in the source · title, characters 0–101 · show in text ↑
e2

“Two cultivars were grown under three shading nets with densities of 37, 50 and 70 % in addition to the control (0 % shading = normal sunlight condition).”

✓ located verbatim in the source · abstract, characters 246–399 · show in text ↑
e3

“This study was carried out at the Agricultural Experiment Station of King Saud University near Riyadh (26° N, 46° E)”

✓ located verbatim in the source · abstract, characters 9–125 · show in text ↑
e4

“Root weights were drastically reduced by increasing shading density, whereas top weights were less affected.”

✓ located verbatim in the source · abstract, characters 540–648 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Shade density interacted significantly with sampling date for most characters.

Treatment
shading densitiese0e1e2e3e4
Outcome
most of the studied characterse0e1e2e3e4

Not reportedDirection

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

Beta vulgaris subsp. vulgaris
Beta vulgaris subsp. vulgaris · TaxonQuadell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The interaction between shading densities and sampling dates was significant for most of the studied characters”

✓ located verbatim in the source · abstract, characters 869–980 · show in text ↑
e1

“Effects of Shading Densities on the Agronomic and Physiological Characters of Two Sugarbeet Cultivars”

✓ located verbatim in the source · title, characters 0–101 · show in text ↑
e2

“Two cultivars were grown under three shading nets with densities of 37, 50 and 70 % in addition to the control (0 % shading = normal sunlight condition).”

✓ located verbatim in the source · abstract, characters 246–399 · show in text ↑
e3

“This study was carried out at the Agricultural Experiment Station of King Saud University near Riyadh (26° N, 46° E)”

✓ located verbatim in the source · abstract, characters 9–125 · show in text ↑
e4

“Root weights were drastically reduced by increasing shading density, whereas top weights were less affected.”

✓ located verbatim in the source · abstract, characters 540–648 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Cultivar and shade density interacted significantly for root weight and crop growth rate only.

Treatment
shading densitiese0e1e2e3e4
Outcome
root weight and crop growth ratese0e1e2e3e4

Not reportedDirection

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

Beta vulgaris subsp. vulgaris
Beta vulgaris subsp. vulgaris · TaxonQuadell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“that between cultivars and shading densities was significant for root weight and crop growth rates only.”

✓ located verbatim in the source · abstract, characters 988–1092 · show in text ↑
e1

“Effects of Shading Densities on the Agronomic and Physiological Characters of Two Sugarbeet Cultivars”

✓ located verbatim in the source · title, characters 0–101 · show in text ↑
e2

“Two cultivars were grown under three shading nets with densities of 37, 50 and 70 % in addition to the control (0 % shading = normal sunlight condition).”

✓ located verbatim in the source · abstract, characters 246–399 · show in text ↑
e3

“This study was carried out at the Agricultural Experiment Station of King Saud University near Riyadh (26° N, 46° E)”

✓ located verbatim in the source · abstract, characters 9–125 · show in text ↑
e4

“Root weights were drastically reduced by increasing shading density, whereas top weights were less affected.”

✓ located verbatim in the source · abstract, characters 540–648 · show in text ↑

shade · growth · Beta vulgaris (beet)Positive and negative results

8 papers: 2 positive, 6 negative or no effect

5 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. positive
  3. positive

4 papers more in this group

See all 8 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.