Abstract
A magnesium fertiliser trial was carried out on autumn and early winter sown wheat at three sites near Methven in 2000-01. Treatments included different rates of magnesium oxide or kieserite (magnesium sulphate) applied in early winter, a single rate of these applied in spring and a spray treatment of Magflo (magnesium oxide suspension). Herbage Mg levels were measured twice in the spring and varied considerably between sites and samplings. Spring herbage Mg content increased with increasing rate of winter-applied kieserite in four of the six herbage samplings. Magnesium oxide applied in early winter was not as effective as kieserite in increasing herbage Mg levels. Magnesium applied in the spring was not effective in increasing herbage Mg levels 7-8 weeks later, irrespective of the form of application. There was no significant effect of magnesium treatment on grain yield, grain weight, screenings or grain N or Mg content, despite all sites having low soil Mg levels, and at some stage in the spring, low herbage Mg levels. It is likely that climatic conditions impacted significantly on the results as in the past leaf symptoms of Mg deficiency have been noted at higher soil Mg levels.
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Claims 7
Claim · model-written summary
Wheat herbage magnesium levels varied between sites and spring sampling times.
- Taxon
- wheat
Triticum aestivumt0 - Outcome
- Herbage Mg levelse0
- Direction
- varied considerablye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Herbage Mg levels were measured twice in the spring and varied considerably between sites and samplings.”
t0“wheat”
Claim · model-written summary
Winter kieserite increased spring wheat herbage magnesium with application rate in four of six samplings.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- winter-applied kieseritee0
- Outcome
- Spring herbage Mg contente0
- Direction
- increasede0
- Qualifier
- four of the six herbage samplingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spring herbage Mg content increased with increasing rate of winter-applied kieserite in four of the six herbage samplings.”
t0“wheat”
Claim · model-written summary
Early-winter magnesium oxide was less effective than kieserite at raising wheat herbage magnesium.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Magnesium oxide applied in early wintere0
- Outcome
- herbage Mg levelse0
- Direction
- not as effectivee0
- Comparator
- kieseritee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Magnesium oxide applied in early winter was not as effective as kieserite in increasing herbage Mg levels.”
t0“wheat”
Claim · model-written summary
Spring magnesium applications did not raise wheat herbage magnesium 7-8 weeks later.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Magnesium applied in the springe0
- Outcome
- herbage Mg levelse0
- Direction
- not effective in increasinge0
- Qualifier
- 7-8 weeks latere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Magnesium applied in the spring was not effective in increasing herbage Mg levels 7-8 weeks later, irrespective of the form of application.”
t0“wheat”
Claim · model-written summary
Magnesium treatment had no significant effect on wheat grain yield, grain weight, or screenings.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- magnesium treatmente0
- Outcome
- grain yield, grain weight, screeningse0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no significant effect of magnesium treatment on grain yield, grain weight, screenings or grain N or Mg content”
t0“wheat”
Claim · model-written summary
Magnesium treatment had no significant effect on wheat grain nitrogen or magnesium content.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- magnesium treatmente0
- Outcome
- grain N or Mg contente0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no significant effect of magnesium treatment on grain yield, grain weight, screenings or grain N or Mg content”
t0“wheat”
Claim · model-written summary
The authors suggest climate conditions significantly influenced the trial results.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- the resultse0
- Qualifier
- climatic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is likely that climatic conditions impacted significantly on the results”
t0“wheat”
The same questions in other papers
magnesium atom · yield · Triticum aestivum (wheat)Results differ
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- positive
- positive
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See all 36 papers →magnesium atom · nutrient: content · Triticum aestivum (wheat)Positive and negative results
3 papers in the same direction as this paper · 17 in the opposite direction
- positive
- positive
- positive
17 papers more in this group
See all 21 papers →magnesium oxide · nutrient: content · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- no effect
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.