Abstract
The results obtained in studies undertaken to determine the influence of magnesium on the yield of various crops of economic importance in Puerto Rico ar-e briefly summarized as follows: 1. Magnesium Lncr-ea aed significantly yields of sweet potatoes when this nutrient wa:s applied to a Lares clay and Sabana Seca sandy clay soils. 2. The application of magnesium sulfate as spray and in the soil relieved grapefruit trees from visual symptoms of deficiency of magnesium. Heavy shedding of the leaves was corrected by using this nutrient. 3. On a highly alkaline soil magnesium applications to the soi.l were not effective in correcting magnes:i.um deficiency in citrus trees. However, magnesium sprays were quite effective in controlling visual syrptoms of magnesium deficiency. 4. There was a significant yield increase of marhetable coffee in favour of magnesium-treated trees. The difference inyield in favour of magnesium-treated trees was equivalent to a 43 percent over the check or untreated trees. 5. Magnesium was responsible for increasing signif:icantly pineapple yields. Highest fruit yields were associated with the highest leaf magnesium content. A significant correlation was found between relative yields and leaf magnesium content. 6. Yields of plantains were increased by 90.9 percent by the application of magnesium. Plantains receiving no magnesium exhibited deficiency symptoms, including yellowing of the older leaves and reduced growth. Foliar composition of the plantains at 7 months predicted their yield response to magnesium. Lowest plantain yields were associated with a leaf magnesium content of 0.15 while h:ighest plantain yields
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Claims 12
Claim · model-written summary
Magnesium significantly increased sweet potato yields on Lares clay and Sabana Seca sandy clay.
- Taxon
- sweet potatoes
_Flower.jpg?width=60)
Ipomoea batatase0 - Treatment
- Magnesiume0
- Outcome
- yieldse0
- Direction
- Lncr-ea aede0
- Setting
- Lares clay and Sabana Seca sandy clay soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Magnesium Lncr-ea aed significantly yields of sweet potatoes when this nutrient wa:s applied to a Lares clay and Sabana Seca sandy clay soils”
Claim · model-written summary
Magnesium sulfate applied as spray and in soil relieved grapefruit deficiency symptoms and leaf shedding.
- Taxon
- grapefruit
_Pompelino_Grapefruit_002.jpg?width=60)
Citrus ×paradisie0 - Organ / stage
- leavese0
- Treatment
- magnesium sulfate as spray and in the soile0
- Outcome
- visual symptoms of deficiency of magnesiume0
- Direction
- relievede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Pompelino_Grapefruit_002.jpg?width=500)
Verbatim
e0“The application of magnesium sulfate as spray and in the soil relieved grapefruit trees from visual symptoms of deficiency of magnesium. Heavy shedding of the leaves was corrected by using this nutrient”
Claim · model-written summary
Soil magnesium was ineffective against citrus magnesium deficiency on highly alkaline soil.
- Treatment
- magnesium applications to the soi.le0
- Outcome
- magnes:i.um deficiencye0
- Direction
- not effectivee0
- Setting
- highly alkaline soile0
CitrusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On a highly alkaline soil magnesium applications to the soi.l were not effective in correcting magnes:i.um deficiency in citrus trees”
Claim · model-written summary
Magnesium sprays controlled visual citrus magnesium deficiency symptoms.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“magnesium sprays were quite effective in controlling visual syrptoms of magnesium deficiency”
e1“citrus trees”
Claim · model-written summary
Magnesium-treated coffee trees had 43 percent higher marketable yield than untreated trees.
- Treatment
- magnesium-treatede0
- Outcome
- yielde0
- Direction
- increasee0
- Value
- 43 percente0
- Comparator
- untreated treese0
CoffeaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant yield increase of marhetable coffee in favour of magnesium-treated trees. The difference inyield in favour of magnesium-treated trees was equivalent to a 43 percent over the check or untreated trees”
Claim · model-written summary
Magnesium significantly increased pineapple yields.
- Taxon
- pineapple
Ananas comosuse0 - Treatment
- Magnesiume0
- Outcome
- pineapple yieldse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Magnesium was responsible for increasing signif:icantly pineapple yields”
Claim · model-written summary
Highest pineapple fruit yields were associated with highest leaf magnesium content.
- Taxon
- pineappleAnanas comosuse1
- Organ / stage
- leafe0
- Compound
- magnesiume0
- Outcome
- fruit yieldse0
- Direction
- Higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest fruit yields were associated with the highest leaf magnesium content”
e1“pineapple yields”
Claim · model-written summary
Relative pineapple yields correlated significantly with leaf magnesium content.
- Taxon
- pineappleAnanas comosuse1
- Organ / stage
- leafe0
- Compound
- magnesiume0
- Outcome
- relative yieldse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant correlation was found between relative yields and leaf magnesium content”
e1“pineapple yields”
Claim · model-written summary
Magnesium increased plantain yields by 90.9 percent.
- Taxon
- plantainsMusa ABB Groupe0
- Treatment
- application of magnesiume0
- Outcome
- Yieldse0
- Direction
- increasede0
- Value
- 90.9 percente0
Not reportedComparator
Verbatim
e0“Yields of plantains were increased by 90.9 percent by the application of magnesium”
Claim · model-written summary
Plantains receiving no magnesium showed older-leaf yellowing and reduced growth.
- Taxon
- PlantainsMusa ABB Groupe0
- Organ / stage
- older leavese0
- Treatment
- no magnesiume0
- Outcome
- deficiency symptoms, including yellowing of the older leaves and reduced growthe0
Verbatim
e0“Plantains receiving no magnesium exhibited deficiency symptoms, including yellowing of the older leaves and reduced growth”
Claim · model-written summary
Plantain foliar composition at seven months predicted yield response to magnesium.
- Taxon
- plantainsMusa ABB Groupe0
- Organ / stage
- Foliare0
- Outcome
- yield response to magnesiume0
- Qualifier
- 7 monthse0
Not reportedDirection
Verbatim
e0“Foliar composition of the plantains at 7 months predicted their yield response to magnesium”
Claim · model-written summary
Lowest plantain yields were associated with leaf magnesium content of 0.15.
Verbatim
e0“Lowest plantain yields were associated with a leaf magnesium content of 0.15”
The same questions in other papers
magnesium atom · yield · Musa x paradisiaca (banana)Results agree
1 paper in the same direction as this paper
- positive
magnesium atom · nutrient: content · CitrusResults agree
2 papers in the same direction as this paper
- positive
- positive
magnesium atom · yield · Ananas comosus (pineapple)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
application · nutrient: content · CitrusPositive and negative results
14 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
14 papers more in this group
See all 18 papers →application · disease · Citrus x paradisi (grapefruit)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.