Abstract
An experiment was conducted in order to study the effects of all possible combinations of three different concentrations of the elements magnesium, calcium, and boron upon strawberry plants of the variety Senator Dunlap growing in sand culture. The effect of these treatments on the contents of the three elements was determined by spectrographic analysis.Increasing the concentration of magnesium in the culture solution tended to increase the accumulation of magnesium and to decrease the accumulation of calcium by the plants. Increasing the concentration of boron in the culture solution tended to increase the accumulation of boron by the plants and to decrease their yield of fruit. All plants growing in a culture solution containing 0.5 p.p.m. of boron developed both a foliar symptom characteristic of boron toxicity, namely, a marginal chlorosis of the leaves, and certain symptoms characteristic of strawberry black root disease, namely, gradually extending necrotic areas upon the crowns and roots. The fact that the foliar chlorosis symptomatic of boron toxicity in strawberry appeared upon plants supplied with a relatively low concentration of boron is confirmation of the low boron requirement of the strawberry. The fact that the typical foliar symptom of boron toxicity was in all cases accompanied by certain symptoms characteristic of black root disease, namely necrosis of crown and roots, seems to suggest that the latter, in this instance, were also symptomatic of boron toxicity.
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Claims 6
Claim · model-written summary
Increasing magnesium solution concentration increased plant magnesium accumulation.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae1 - Treatment
- Increasing the concentration of magnesium in the culture solutione0
- Outcome
- accumulation of magnesiume0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Increasing the concentration of magnesium in the culture solution tended to increase the accumulation of magnesium and to decrease the accumulation of calcium by the plants.”
e1“strawberry plants”
Claim · model-written summary
Increasing magnesium solution concentration decreased plant calcium accumulation.
- Taxon
- strawberryFragaria ×ananassae1
- Treatment
- Increasing the concentration of magnesium in the culture solutione0
- Outcome
- accumulation of calciume0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the concentration of magnesium in the culture solution tended to increase the accumulation of magnesium and to decrease the accumulation of calcium by the plants.”
e1“strawberry plants”
Claim · model-written summary
Increasing solution boron increased plant boron accumulation.
- Taxon
- strawberryFragaria ×ananassae1
- Treatment
- Increasing the concentration of boron in the culture solutione0
- Outcome
- accumulation of borone0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the concentration of boron in the culture solution tended to increase the accumulation of boron by the plants and to decrease their yield of fruit.”
e1“strawberry plants”
Claim · model-written summary
Increasing solution boron decreased strawberry fruit yield.
- Taxon
- strawberryFragaria ×ananassae1
- Treatment
- Increasing the concentration of boron in the culture solutione0
- Outcome
- yield of fruite0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the concentration of boron in the culture solution tended to increase the accumulation of boron by the plants and to decrease their yield of fruit.”
e1“strawberry plants”
Claim · model-written summary
At 0.5 p.p.m. boron, all plants developed marginal leaf chlorosis and necrotic crowns and roots.
- Taxon
- strawberryFragaria ×ananassae0
- Organ / stage
- leavese0
- Treatment
- culture solution containing 0.5 p.p.m. of borone0
- Outcome
- a marginal chlorosis of the leavese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All plants growing in a culture solution containing 0.5 p.p.m. of boron developed both a foliar symptom characteristic of boron toxicity, namely, a marginal chlorosis of the leaves, and certain symptoms characteristic of strawberry black root disease, namely, gradually extending necrotic areas upon the crowns and roots.”
Claim · model-written summary
The authors interpreted crown and root necrosis accompanying chlorosis as possible boron toxicity.
- Taxon
- strawberryFragaria ×ananassae1
- Outcome
- necrosis of crown and rootse0
- Qualifier
- symptomatic of boron toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fact that the typical foliar symptom of boron toxicity was in all cases accompanied by certain symptoms characteristic of black root disease, namely necrosis of crown and roots, seems to suggest that the latter, in this instance, were also symptomatic of boron toxicity.”
e1“strawberry appeared”
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boron atom · physiology: pigments · Fragaria x ananassa (strawberry)Results differ
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See all 18 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.