Paper · 2016 · Egyptian Journal of Soil Science

Response of Tomato Plants to Foliar Application of Humic, Fulvic Acid and Chelated Calcium

S El; M Husein; A Ameri; et al.

4
claims
4
verbatim quotes
11
citations
1
research areas
✓
Open access

Abstract

INFLUENCE of humic, fulvic acid and calcium foliar application on growth, yield and quality of tomato (H9663 hybrid) was investigated during 2013 and 2014 summer seasons. The experiment was designed in completely randomized block at the Experimental Station, Faculty of Agriculture, Cairo University, Giza, Egypt. Solutions of humic acid (0.4 %), fulvic acid (4%) and chelated calcium (0.25 %) were applied as foliar sprays alone or in combinations on tomato plants at four times after two, four, six and eight weeks from transplanting. Vegetative growth parameters and nutrients content (N, P, K and Ca) of tomato plants as well as yield, fruits quality and incidence percentage of blossom end rot in fruits were investigated on treated and untreated plants. Results indicated that the foliar application of humic, fulvic acid and calcium either individual or in combinations increased vegetative growth, yield, fruit quality and decreased the incidence of blossom end rot in tomato fruits.

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Claims 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar humic acid, fulvic acid and calcium, alone or combined, increased tomato vegetative growth.

Treatment
foliar application of humic, fulvic acid and calcium either individual or in combinationse0
Outcome
vegetative growthe0
Direction
increasede0

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

“Results indicated that the foliar application of humic, fulvic acid and calcium either individual or in combinations increased vegetative growth, yield, fruit quality and decreased the incidence of blossom end rot in tomato fruits.”

✓ located verbatim in the source · abstract, characters 760–991 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The foliar applications increased tomato yield.

Treatment
foliar application of humic, fulvic acid and calcium either individual or in combinationse0
Outcome
yielde0
Direction
increasede0

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

“Results indicated that the foliar application of humic, fulvic acid and calcium either individual or in combinations increased vegetative growth, yield, fruit quality and decreased the incidence of blossom end rot in tomato fruits.”

✓ located verbatim in the source · abstract, characters 760–991 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The foliar applications increased tomato fruit quality.

Treatment
foliar application of humic, fulvic acid and calcium either individual or in combinationse0
Outcome
fruit qualitye0
Direction
increasede0

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

“Results indicated that the foliar application of humic, fulvic acid and calcium either individual or in combinations increased vegetative growth, yield, fruit quality and decreased the incidence of blossom end rot in tomato fruits.”

✓ located verbatim in the source · abstract, characters 760–991 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The foliar applications decreased blossom end rot incidence in tomato fruit.

Organ / stage
fruitse0
Treatment
foliar application of humic, fulvic acid and calcium either individual or in combinationse0
Outcome
incidence of blossom end rote0
Direction
decreasede0

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

“Results indicated that the foliar application of humic, fulvic acid and calcium either individual or in combinations increased vegetative growth, yield, fruit quality and decreased the incidence of blossom end rot in tomato fruits.”

✓ located verbatim in the source · abstract, characters 760–991 · show in text ↑

calcium atom · disease · Solanum lycopersicum (tomato)Results differ

50 papers: 35 positive, 15 negative or no effect

34 papers in the same direction as this paper · 14 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. positive
  3. negative

46 papers more in this group

See all 50 papers →

calcium atom · growth · Solanum lycopersicum (tomato)Results differ

60 papers: 54 positive, 6 negative or no effect

53 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. negative
  3. no effect

56 papers more in this group

See all 60 papers →

calcium atom · yield · Solanum lycopersicum (tomato)Results differ

79 papers: 67 positive, 12 negative or no effect

66 papers in the same direction as this paper · 11 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

75 papers more in this group

See all 79 papers →

calcium atom · quality: grain · Solanum lycopersicum (tomato)Positive and negative results

14 papers: 11 positive, 3 negative or no effect

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

  1. no effect
  2. negative
  3. no effect

10 papers more in this group

See all 14 papers →

other · quality: grain · Solanum lycopersicum (tomato)Positive and negative results

13 papers: 12 positive, 1 negative or no effect

11 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

9 papers more in this group

See all 13 papers →

application · quality: grain · Solanum lycopersicum (tomato)Positive and negative results

29 papers: 24 positive, 5 negative or no effect

23 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative

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

25 papers more in this group

See all 29 papers →

other · disease · Solanum lycopersicum (tomato)Positive and negative results

31 papers: 28 positive, 3 negative or no effect

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

  1. no effect
  2. no effect
  3. negative

27 papers more in this group

See all 31 papers →

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

130 papers: 117 positive, 13 negative or no effect

116 papers in the same direction as this paper · 13 in the opposite direction

  1. positive
  2. no effect
  3. no effect

126 papers more in this group

See all 130 papers →

8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.