Paper · 2020 · Journal of Plant Nutrition

The effects of different methods of zinc application on canola seed yield and oil content

Kamran Afsahi; Marziyeh Nazari; Heshmat Omidi; et al.

9
claims
17
verbatim quotes
32
citations
2
research areas
—
Not open access

Abstract

Zinc (Zn) as a microelement plays a salient role in the vital processes of plants such as metabolism and nutrition. This experimental study was conducted in the research field of Agriculture Faculty, Zanjan University using two genotypes of canola as main factor (Okapi and Tassilo) and zinc fertilizer application method in 7 levels including control, foliar spraying (2, 3.5, and 5 g/L) at the beginning of flowering and soil application (25, 50, and 75 kg/ha) were considered as sub-plot factor. The results showed that the application of zinc significantly increased the chlorophyll content as compared to control treatment. The highest chlorophyll content was observed in foliar spraying of 3.5 and 5 g/L zinc in Okapi cultivar. While, the highest value of RWC content resulted only with spraying 5 g/L of zinc. The result showed that zinc foliar of 5 g/L obtained the highest oil and seed yields and seed yield components. In addition, the highest qualitative seed traits (oil and protein content and zinc content in seed and plant) resulted with spraying 5 g/L of zinc. Also, Okapi cultivar had more quantitative and qualitative yields than Tassilo cultivar. The foliar spray of 5 g/L Zn can be recommended to increase the quantity and quality seed yield of canola.

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 9

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Zinc significantly increased canola chlorophyll content relative to the control.

Treatment
application of zince0
Outcome
chlorophyll contente0
Direction
increasede0
Comparator
control treatmente0

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“the application of zinc significantly increased the chlorophyll content as compared to control treatment”

✓ located verbatim in the source · abstract, characters 523–627 · show in text ↑
t0

“canola”

✓ located verbatim in the source · title, characters 56–62 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar zinc at 3.5 g/L produced the highest chlorophyll content in Okapi.

Material
Okapie0
Treatment
foliar spraying of 3.5 and 5 g/L zince0
Outcome
chlorophyll contente0
Direction
higheste0
Qualifier
3.5e0

Not reportedComparator

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest chlorophyll content was observed in foliar spraying of 3.5 and 5 g/L zinc in Okapi cultivar.”

✓ located verbatim in the source · abstract, characters 629–733 · show in text ↑
t0

“canola”

✓ located verbatim in the source · title, characters 56–62 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar zinc at 5 g/L produced the highest chlorophyll content in Okapi.

Material
Okapie0
Treatment
5 g/L zince0
Outcome
chlorophyll contente0
Direction
higheste0

Not reportedComparator

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest chlorophyll content was observed in foliar spraying of 3.5 and 5 g/L zinc in Okapi cultivar.”

✓ located verbatim in the source · abstract, characters 629–733 · show in text ↑
t0

“canola”

✓ located verbatim in the source · title, characters 56–62 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Only 5 g/L zinc spraying produced the highest RWC content.

Treatment
spraying 5 g/L of zince0
Outcome
RWC contente0
Direction
higheste0
Qualifier
onlye0

Not reportedComparator

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“the highest value of RWC content resulted only with spraying 5 g/L of zinc”

✓ located verbatim in the source · abstract, characters 741–815 · show in text ↑
t0

“canola”

✓ located verbatim in the source · title, characters 56–62 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar zinc at 5 g/L gave the highest oil and seed yields and seed yield components.

Treatment
zinc foliar of 5 g/Le0
Outcome
oil and seed yields and seed yield componentse0
Direction
higheste0

Not reportedComparator

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“zinc foliar of 5 g/L obtained the highest oil and seed yields and seed yield components”

✓ located verbatim in the source · abstract, characters 840–927 · show in text ↑
t0

“canola”

✓ located verbatim in the source · title, characters 56–62 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Zinc spraying at 5 g/L gave the highest seed oil and protein contents.

Treatment
spraying 5 g/L of zince0
Outcome
oil and protein contente0
Direction
higheste0

Not reportedComparator

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“the highest qualitative seed traits (oil and protein content and zinc content in seed and plant) resulted with spraying 5 g/L of zinc”

✓ located verbatim in the source · abstract, characters 942–1075 · show in text ↑
t0

“canola”

✓ located verbatim in the source · title, characters 56–62 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Zinc spraying at 5 g/L gave the highest zinc content in seed and plant.

Treatment
spraying 5 g/L of zince0
Outcome
zinc content in seed and plante0
Direction
higheste0

Not reportedComparator

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“the highest qualitative seed traits (oil and protein content and zinc content in seed and plant) resulted with spraying 5 g/L of zinc”

✓ located verbatim in the source · abstract, characters 942–1075 · show in text ↑
t0

“canola”

✓ located verbatim in the source · title, characters 56–62 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Okapi had greater quantitative and qualitative yields than Tassilo.

Material
Okapie0
Outcome
quantitative and qualitative yieldse0
Direction
moree0
Comparator
Tassiloe0

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Okapi cultivar had more quantitative and qualitative yields than Tassilo cultivar”

✓ located verbatim in the source · abstract, characters 1083–1164 · show in text ↑
t0

“canola”

✓ located verbatim in the source · title, characters 56–62 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Foliar spray of 5 g/L Zn was recommended to improve canola seed yield quantity and quality.

Outcome
foliar spray of 5 g/L Zne0
Qualifier
can be recommendede0

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The foliar spray of 5 g/L Zn can be recommended to increase the quantity and quality seed yield of canola.”

✓ located verbatim in the source · abstract, characters 1166–1272 · show in text ↑

zinc atom · yield · Brassica napus (oilseed rape)Results differ

39 papers: 35 positive, 4 negative or no effect

34 papers in the same direction as this paper · 4 in the opposite direction

  1. positive
  2. positive
  3. positive

35 papers more in this group

See all 39 papers →

zinc atom · physiology: pigments · Brassica napus (oilseed rape)Positive and negative results

7 papers: 6 positive, 1 negative or no effect

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

  1. positive
  2. negative
  3. positive

3 papers more in this group

See all 7 papers →

zinc atom · quality: protein · Brassica napus (oilseed rape)Positive and negative results

13 papers: 11 positive, 2 negative or no effect

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

  1. positive
  2. positive
  3. negative

9 papers more in this group

See all 13 papers →

zinc atom · nutrient: content · Brassica napus (oilseed rape)Positive and negative results

15 papers: 13 positive, 2 negative or no effect

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

  1. positive
  2. negative
  3. no effect

11 papers more in this group

See all 15 papers →

zinc atom · physiology: water · Brassica napus (oilseed rape)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

application · quality: protein · Brassica napus (oilseed rape)Positive and negative results

7 papers: 6 positive, 1 negative or no effect

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

  1. positive
  2. no effect
  3. positive

3 papers more in this group

See all 7 papers →

application · physiology: pigments · Brassica napus (oilseed rape)Positive and negative results

17 papers: 15 positive, 2 negative or no effect

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

  1. no effect
  2. negative
  3. positive

13 papers more in this group

See all 17 papers →

application · nutrient: content · Brassica napus (oilseed rape)Positive and negative results

18 papers: 15 positive, 3 negative or no effect

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

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

14 papers more in this group

See all 18 papers →

8 of 10 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.