Paper · 2024 · Frontiers in Plant Science

Potassium and zinc improves physiological performance, nutrient use efficiency, and productivity of wheat

Abeer Nawaz; Muhammad Amjad Bashir; Wazir Ahmed; et al.

20
claims
47
verbatim quotes
6
citations
2
research areas
✓
Open access · cc-by

Abstract

Despite the critical role of balanced nutrition in crop productivity, the use of potash (K) and zinc (Zn) is not much practiced by Pakistani farmers. The reduced nutrient uptake and crop productivity together increase the costs associated with fertilization and revisit farmers’ confidence in the efficacy and profitability of fertilizers. To address this problem, a field study was conducted in the research area of the MNS-University of Agriculture, Multan, in collaboration with Engro Fertilizers Limited. The research plan consisted of five treatments, including T 1 = control (without N, P, K, and Zn fertilizers), T 2 = NP in practice (NP at 32–23–0 kg acre -1 ), T 3 = recommended NP (NP at 48–34.5 kg acre -1 ), T 4 = balanced NPK (NP+K at 48–34.5–30 kg acre -1 ), and T 5 = balanced NPK + Zn (NPK+Zn at 48–34.5–30 + 7.5 kg acre -1 ). Wheat was used as a test crop, and its growth, yield, and physiological and nutritional parameters were studied. The results indicated that NPK+Zn balanced nutrition increased plant height, spike length, photosynthetic rate, water use efficiency, transpiration rate, stomatal conductance, and grain yield by 13%, 15%, 44%, 60%, 63%, 39%, and 78%, respectively, compared with the control. It was found that the combined application of NP, K, and Zn improved the recovery efficiency of applied nutrients, i.e., nitrogen recovery efficiency (NRE) by 230%, phosphorus recovery efficiency (PRE) by 136%, potassium recovery efficiency (KRE) by 135%, and zinc recovery efficiency (ZnRE) by 136% compared to NP-alone application. Agronomic use efficiency of applied fertilizers, such as potassium agronomic use efficiency (KAUE) by 71%, phosphorus agronomic use efficiency (PAUE) by 72%, nitrogen agronomic use efficiency (NAUE) by 70%, and zinc agronomic use efficiency (ZnAUE) by 72%, was observed compared to NP-alone application. The results showed that NPUE, PPUE, NPUE, and ZnPUE were reduced by 5%, 3%, 3%, and 5%, respectively, compared to NP-alone application. Our findings suggest that K and Zn should be made an essential part of wheat nutrition management for higher yield and better quality of produce.

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 20

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK plus Zn increased wheat plant height by 13% relative to control.

Treatment
NPK+Zn balanced nutritione0
Outcome
plant heighte0
Direction
increasede0
Value
13%e0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK+Zn balanced nutrition increased plant height, spike length, photosynthetic rate, water use efficiency, transpiration rate, stomatal conductance, and grain yield by 13%, 15%, 44%, 60%, 63%, 39%, and 78%, respectively, compared with the control”

✓ located verbatim in the source · abstract, characters 983–1229 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK plus Zn increased wheat spike length by 15% relative to control.

Treatment
NPK+Zn balanced nutritione0
Outcome
spike lengthe0
Direction
increasede0
Value
15%e0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK+Zn balanced nutrition increased plant height, spike length, photosynthetic rate, water use efficiency, transpiration rate, stomatal conductance, and grain yield by 13%, 15%, 44%, 60%, 63%, 39%, and 78%, respectively, compared with the control”

✓ located verbatim in the source · abstract, characters 983–1229 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK plus Zn increased wheat photosynthetic rate by 44% relative to control.

Treatment
NPK+Zn balanced nutritione0
Outcome
photosynthetic ratee0
Direction
increasede0
Value
44%e0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK+Zn balanced nutrition increased plant height, spike length, photosynthetic rate, water use efficiency, transpiration rate, stomatal conductance, and grain yield by 13%, 15%, 44%, 60%, 63%, 39%, and 78%, respectively, compared with the control”

✓ located verbatim in the source · abstract, characters 983–1229 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK plus Zn increased wheat water use efficiency by 60% relative to control.

Treatment
NPK+Zn balanced nutritione0
Outcome
water use efficiencye0
Direction
increasede0
Value
60%e0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK+Zn balanced nutrition increased plant height, spike length, photosynthetic rate, water use efficiency, transpiration rate, stomatal conductance, and grain yield by 13%, 15%, 44%, 60%, 63%, 39%, and 78%, respectively, compared with the control”

✓ located verbatim in the source · abstract, characters 983–1229 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK plus Zn increased wheat transpiration rate by 63% relative to control.

Treatment
NPK+Zn balanced nutritione0
Outcome
transpiration ratee0
Direction
increasede0
Value
63%e0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK+Zn balanced nutrition increased plant height, spike length, photosynthetic rate, water use efficiency, transpiration rate, stomatal conductance, and grain yield by 13%, 15%, 44%, 60%, 63%, 39%, and 78%, respectively, compared with the control”

✓ located verbatim in the source · abstract, characters 983–1229 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK plus Zn increased wheat stomatal conductance by 39% relative to control.

Treatment
NPK+Zn balanced nutritione0
Outcome
stomatal conductancee0
Direction
increasede0
Value
39%e0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK+Zn balanced nutrition increased plant height, spike length, photosynthetic rate, water use efficiency, transpiration rate, stomatal conductance, and grain yield by 13%, 15%, 44%, 60%, 63%, 39%, and 78%, respectively, compared with the control”

✓ located verbatim in the source · abstract, characters 983–1229 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK plus Zn increased wheat grain yield by 78% relative to control.

Treatment
NPK+Zn balanced nutritione0
Outcome
grain yielde0
Direction
increasede0
Value
78%e0
Comparator
controle0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK+Zn balanced nutrition increased plant height, spike length, photosynthetic rate, water use efficiency, transpiration rate, stomatal conductance, and grain yield by 13%, 15%, 44%, 60%, 63%, 39%, and 78%, respectively, compared with the control”

✓ located verbatim in the source · abstract, characters 983–1229 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined NP, K and Zn improved nitrogen recovery efficiency by 230% relative to NP alone.

Treatment
combined application of NP, K, and Zne0
Outcome
nitrogen recovery efficiencye0
Direction
improvede0
Value
230%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“combined application of NP, K, and Zn improved the recovery efficiency of applied nutrients, i.e., nitrogen recovery efficiency (NRE) by 230%, phosphorus recovery efficiency (PRE) by 136%, potassium recovery efficiency (KRE) by 135%, and zinc recovery efficiency (ZnRE) by 136% compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1253–1563 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined NP, K and Zn improved phosphorus recovery efficiency by 136% relative to NP alone.

Treatment
combined application of NP, K, and Zne0
Outcome
phosphorus recovery efficiencye0
Direction
improvede0
Value
136%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“combined application of NP, K, and Zn improved the recovery efficiency of applied nutrients, i.e., nitrogen recovery efficiency (NRE) by 230%, phosphorus recovery efficiency (PRE) by 136%, potassium recovery efficiency (KRE) by 135%, and zinc recovery efficiency (ZnRE) by 136% compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1253–1563 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined NP, K and Zn improved potassium recovery efficiency by 135% relative to NP alone.

Treatment
combined application of NP, K, and Zne0
Outcome
potassium recovery efficiencye0
Direction
improvede0
Value
135%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“combined application of NP, K, and Zn improved the recovery efficiency of applied nutrients, i.e., nitrogen recovery efficiency (NRE) by 230%, phosphorus recovery efficiency (PRE) by 136%, potassium recovery efficiency (KRE) by 135%, and zinc recovery efficiency (ZnRE) by 136% compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1253–1563 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined NP, K and Zn improved zinc recovery efficiency by 136% relative to NP alone.

Treatment
combined application of NP, K, and Zne0
Outcome
zinc recovery efficiencye0
Direction
improvede0
Value
136%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“combined application of NP, K, and Zn improved the recovery efficiency of applied nutrients, i.e., nitrogen recovery efficiency (NRE) by 230%, phosphorus recovery efficiency (PRE) by 136%, potassium recovery efficiency (KRE) by 135%, and zinc recovery efficiency (ZnRE) by 136% compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1253–1563 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium agronomic use efficiency was 71% greater than with NP alone.

Treatment
combined application of NP, K, and Zne2
Outcome
potassium agronomic use efficiencye0
Direction
higherinferrede0
Value
71%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Agronomic use efficiency of applied fertilizers, such as potassium agronomic use efficiency (KAUE) by 71%, phosphorus agronomic use efficiency (PAUE) by 72%, nitrogen agronomic use efficiency (NAUE) by 70%, and zinc agronomic use efficiency (ZnAUE) by 72%, was observed compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1565–1867 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
e2

“combined application of NP, K, and Zn”

✓ located verbatim in the source · abstract, characters 1253–1290 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Phosphorus agronomic use efficiency was 72% greater than with NP alone.

Treatment
combined application of NP, K, and Zne2
Outcome
phosphorus agronomic use efficiencye0
Direction
higherinferrede0
Value
72%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Agronomic use efficiency of applied fertilizers, such as potassium agronomic use efficiency (KAUE) by 71%, phosphorus agronomic use efficiency (PAUE) by 72%, nitrogen agronomic use efficiency (NAUE) by 70%, and zinc agronomic use efficiency (ZnAUE) by 72%, was observed compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1565–1867 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
e2

“combined application of NP, K, and Zn”

✓ located verbatim in the source · abstract, characters 1253–1290 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen agronomic use efficiency was 70% greater than with NP alone.

Treatment
combined application of NP, K, and Zne2
Outcome
nitrogen agronomic use efficiencye0
Direction
higherinferrede0
Value
70%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Agronomic use efficiency of applied fertilizers, such as potassium agronomic use efficiency (KAUE) by 71%, phosphorus agronomic use efficiency (PAUE) by 72%, nitrogen agronomic use efficiency (NAUE) by 70%, and zinc agronomic use efficiency (ZnAUE) by 72%, was observed compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1565–1867 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
e2

“combined application of NP, K, and Zn”

✓ located verbatim in the source · abstract, characters 1253–1290 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Zinc agronomic use efficiency was 72% greater than with NP alone.

Treatment
combined application of NP, K, and Zne2
Outcome
zinc agronomic use efficiencye0
Direction
higherinferrede0
Value
72%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Agronomic use efficiency of applied fertilizers, such as potassium agronomic use efficiency (KAUE) by 71%, phosphorus agronomic use efficiency (PAUE) by 72%, nitrogen agronomic use efficiency (NAUE) by 70%, and zinc agronomic use efficiency (ZnAUE) by 72%, was observed compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1565–1867 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
e2

“combined application of NP, K, and Zn”

✓ located verbatim in the source · abstract, characters 1253–1290 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

NPUE was reduced by 5% relative to NP alone.

Treatment
combined application of NP, K, and Zne2
Outcome
NPUEe0
Direction
reducede0
Value
5%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPUE, PPUE, NPUE, and ZnPUE were reduced by 5%, 3%, 3%, and 5%, respectively, compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1893–2003 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
e2

“combined application of NP, K, and Zn”

✓ located verbatim in the source · abstract, characters 1253–1290 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

PPUE was reduced by 3% relative to NP alone.

Treatment
combined application of NP, K, and Zne2
Outcome
PPUEe0
Direction
reducede0
Value
3%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPUE, PPUE, NPUE, and ZnPUE were reduced by 5%, 3%, 3%, and 5%, respectively, compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1893–2003 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
e2

“combined application of NP, K, and Zn”

✓ located verbatim in the source · abstract, characters 1253–1290 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

A second NPUE entry was reduced by 3% relative to NP alone, as stated.

Treatment
combined application of NP, K, and Zne2
Outcome
NPUEe0
Direction
reducede0
Value
3%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPUE, PPUE, NPUE, and ZnPUE were reduced by 5%, 3%, 3%, and 5%, respectively, compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1893–2003 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
e2

“combined application of NP, K, and Zn”

✓ located verbatim in the source · abstract, characters 1253–1290 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

ZnPUE was reduced by 5% relative to NP alone.

Treatment
combined application of NP, K, and Zne2
Outcome
ZnPUEe0
Direction
reducede0
Value
5%e0
Comparator
NP-alone applicatione0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPUE, PPUE, NPUE, and ZnPUE were reduced by 5%, 3%, 3%, and 5%, respectively, compared to NP-alone application”

✓ located verbatim in the source · abstract, characters 1893–2003 · show in text ↑
e1

“Wheat was used as a test crop”

✓ located verbatim in the source · abstract, characters 843–872 · show in text ↑
e2

“combined application of NP, K, and Zn”

✓ located verbatim in the source · abstract, characters 1253–1290 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend potassium and zinc in wheat nutrition management for higher yield and produce quality.

Outcome
K and Zn should be made an essential part of wheat nutrition managemente0

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“K and Zn should be made an essential part of wheat nutrition management for higher yield and better quality of produce”

✓ located verbatim in the source · abstract, characters 2031–2149 · show in text ↑

zinc atom · physiology: gas exchange · Triticum aestivum (wheat)Results differ

8 papers: 5 positive, 3 negative or no effect

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

  1. negative
  2. negative
  3. negative

4 papers more in this group

See all 8 papers →

zinc atom · physiology: photosynthesis · Triticum aestivum (wheat)Results differ

22 papers: 18 positive, 4 negative or no effect

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

  1. negative
  2. negative
  3. negative

18 papers more in this group

See all 22 papers →

zinc atom · growth · Triticum aestivum (wheat)Results differ

200 papers: 155 positive, 45 negative or no effect

154 papers in the same direction as this paper · 43 in the opposite direction · 2 reporting no difference from an alternative

  1. positive
  2. no effect
  3. no effect
    Wheat plants with low Mn or low Zn supply showed no growth differences from controls at the three harvests.

    Distribution and remobilization of Zn and Mn during grain development in wheat · 1994 · compared with controls (sufficient Zn and Mn)

    Opposite directionAbout lacking this nutrient, so it counts the other way round

196 papers more in this group

See all 200 papers →

zinc atom · nutrient: content · Triticum aestivum (wheat)Results differ

380 papers: 347 positive, 33 negative or no effect

346 papers in the same direction as this paper · 33 in the opposite direction

  1. positive
  2. negative
  3. negative

376 papers more in this group

See all 380 papers →

zinc atom · yield · Triticum aestivum (wheat)Results differ

511 papers: 456 positive, 55 negative or no effect

455 papers in the same direction as this paper · 49 in the opposite direction · 6 reporting no difference from an alternative

  1. positive
  2. no effect
  3. negative

507 papers more in this group

See all 511 papers →

zinc atom · physiology: water · Triticum aestivum (wheat)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

zinc atom · nutrient: efficiency · Triticum aestivum (wheat)Results agree

12 papers: 12 positive, 0 negative or no effect

11 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

potassium · nutrient: efficiency · Triticum aestivum (wheat)Positive and negative results

12 papers: 10 positive, 2 negative or no effect

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

  1. negative
  2. negative
  3. positive

8 papers more in this group

See all 12 papers →

8 of 16 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.