Paper · 2020 · Pakistan Journal of Agricultural Research

Influence of 4-CPA Growth Regulator for Enhancing Yield of Tomato During Low Night Temperature Stress

Saeed Ahmed Shah Chishti; Saba Aleem; Iram Sharif; et al.

6
claims
10
verbatim quotes
1
citations
1
research areas
✓
Open access · cc-by

Abstract

Any increase or decrease from optimum temperature results in premature drop of tomato fruit Night temperature also plays an important role in the setting and development of the fruit, as night temperature below 10 C significantly affects the fruit set in tomato Adam et al. (2001) while evaluating the impact of temperature on growth and development of tomato fruit, reported that temperature below 14C greatly reduces the tomato growth and causes the Abstract | Flowering in Solanum lycopersicum L. is sensitive to low-temperature as it inhibits the fuit growth and causes poor fruit setting. The present experiment was conducted to improve the fruit growth and fruit set in tomato during low-temperature stress conditions by the use of growth regulator 4-chlorophenoxy acetic acid. Seven different 4-chlorophenoxy acetic acid levels along with two indeterminate tomato varieties saandal and sahel were tested in two minimum night temperature conditions 12.5-23C and 2-7.5C. Tomato yield per plant, yield per cluster, number of fruits per cluster, fruit weight and fruit diameter were significantly improved by the application of 4-chlorophenoxy acetic acid. Highest yield per plant 13.50 kg was recorded with the application of 75 ppm in 4-chlorophenoxy acetic acid twicely when the minimum temperature was ranged between 12.5-23C. Likewise, maximum yield per plant 7.08 kg was also obtained with the same treatment when the minimum temperature was between 2-7.5C. This gain was primarily due to increased yield per cluster, fruits per cluster, fruit weight and fruit diameter in both minimum night temperature conditions (12.5-23C and 2-7.5C). 87 % gain in yield per plant was observed with 75 ppm double sprayed treatment over control when minimum night temperature varied between 2-7.5C. Successful yield increase per plant suggested that 4-CPA could be used as a tool for getting economical tomato yield when night temperature falls below 10C.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 resultpositivesignificant (as stated)measured

Claim · model-written summary

4-chlorophenoxy acetic acid significantly improved yield per plant, yield per cluster and fruits per cluster.

Treatment
application of 4-chlorophenoxy acetic acide0
Outcome
yield per plant, yield per cluster, number of fruits per clustere0
Direction
improvede0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Tomato yield per plant, yield per cluster, number of fruits per cluster, fruit weight and fruit diameter were significantly improved by the application of 4-chlorophenoxy acetic acid.”

✓ located verbatim in the source · abstract, characters 976–1159 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

4-chlorophenoxy acetic acid significantly improved fruit weight and diameter.

Treatment
application of 4-chlorophenoxy acetic acide0
Outcome
fruit weight and fruit diametere0
Direction
improvede0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Tomato yield per plant, yield per cluster, number of fruits per cluster, fruit weight and fruit diameter were significantly improved by the application of 4-chlorophenoxy acetic acid.”

✓ located verbatim in the source · abstract, characters 976–1159 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Double 75 ppm application yielded 13.50 kg per plant at 12.5-23C.

Treatment
application of 75 ppm in 4-chlorophenoxy acetic acid twicelye0
Outcome
yield per plante0
Direction
Higheste0
Value
13.50 kge0
Qualifier
12.5-23Ce0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Highest yield per plant 13.50 kg was recorded with the application of 75 ppm in 4-chlorophenoxy acetic acid twicely when the minimum temperature was ranged between 12.5-23C.”

✓ located verbatim in the source · abstract, characters 1160–1333 · show in text ↑
e1

“premature drop of tomato fruit”

✓ located verbatim in the source · abstract, characters 61–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The same treatment yielded 7.08 kg per plant at 2-7.5C.

Treatment
application of 75 ppm in 4-chlorophenoxy acetic acid twicelye1
Outcome
yield per plante0
Direction
maximume0
Value
7.08 kge0
Qualifier
2-7.5Ce0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“maximum yield per plant 7.08 kg was also obtained with the same treatment when the minimum temperature was between 2-7.5C.”

✓ located verbatim in the source · abstract, characters 1344–1466 · show in text ↑
e1

“application of 75 ppm in 4-chlorophenoxy acetic acid twicely”

✓ located verbatim in the source · abstract, characters 1215–1275 · show in text ↑
e2

“premature drop of tomato fruit”

✓ located verbatim in the source · abstract, characters 61–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under 2-7.5C, double sprayed 75 ppm produced 87 % higher yield per plant than control.

Treatment
75 ppm double sprayed treatmente0
Outcome
yield per plante0
Direction
gaine0
Value
87 %e0
Qualifier
2-7.5Ce0
Comparator
controle0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“87 % gain in yield per plant was observed with 75 ppm double sprayed treatment over control when minimum night temperature varied between 2-7.5C.”

✓ located verbatim in the source · abstract, characters 1647–1792 · show in text ↑
e1

“premature drop of tomato fruit”

✓ located verbatim in the source · abstract, characters 61–91 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors suggest 4-CPA to achieve economical tomato yield below 10C.

Treatment
4-CPAe0
Outcome
economical tomato yielde0
Qualifier
below 10Ce0

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“4-CPA could be used as a tool for getting economical tomato yield when night temperature falls below 10C.”

✓ located verbatim in the source · abstract, characters 1844–1949 · show in text ↑

(4-chlorophenoxy)acetic acid · yield · Solanum lycopersicum (tomato)Results differ

15 papers: 12 positive, 3 negative or no effect

11 papers in the same direction as this paper · 3 in the opposite direction

  1. negative
  2. positive
  3. positive

11 papers more in this group

See all 15 papers →

application · yield · Solanum lycopersicum (tomato)Positive and negative results

296 papers: 261 positive, 35 negative or no effect

260 papers in the same direction as this paper · 33 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

292 papers more in this group

See all 296 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.