Abstract
Background and Objectives: Mango (Mangifera indica L.) cultivation is new in Saudi Arabia and rigorous fertilization programs are yet to be implemented to help growers deal with the widespread nutrient deficiencies in their orchards. Use of fertilizers especially micro-nutrients is still erratic and very variable from one grower to another. The present study was initiated after Zn deficiency symptoms were discovered in several mango orchards of Jazan region of Saudi Arabia. Materials and Methods: The experiment was carried out in two orchards using two Zn products (Zn sulfate and chelated Zn). Mature mango trees of the cultivar Sensation on Sudani rootstock were sprayed either immediately before bloom or both before and after bloom. Results: The application of zinc did increase leaf zinc concentrations and improved net photosynthetic assimilation rates. The deficiency symptoms decreased but did not disappear completely possibly because of other nutrients being deficient too, especially Cu which concentration was below the optimum range. To deal with the wide-spread nutrient deficiency symptoms due to soil alkalinity and lack of consistent fertilization, growers need to spray regularly with micro nutrients and to adjust soil pH which was too high. Conclusion: This study reports for the first time about the widespread micro nutrient deficiencies in Mango orchards in Jazan. It should be emphasized that making fertilization decisions based on visual symptoms alone can be risky when multiple essential elements are deficient. In the present case, there were clear indications of Zn deficiency but the analyses showed that Cu is more of a problem.
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Claims 8
Claim · model-written summary
Foliar zinc increase leaf zinc concentrations in mango.
- Taxon
- mango
_from_India.jpg?width=60)
Mangifera indicae1 - Material
- Sensatione1
- Treatment
- application of zince0
- Outcome
- leaf zinc concentrationse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“The application of zinc did increase leaf zinc concentrations and improved net photosynthetic assimilation rates.”
e1“Mature mango trees of the cultivar Sensation on Sudani rootstock were sprayed either immediately before bloom or both before and after bloom.”
Claim · model-written summary
Foliar zinc improved net photosynthetic assimilation rates in mango.
- Taxon
- mangoMangifera indicae1
- Material
- Sensatione1
- Treatment
- application of zince0
- Outcome
- net photosynthetic assimilation ratese0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of zinc did increase leaf zinc concentrations and improved net photosynthetic assimilation rates.”
e1“Mature mango trees of the cultivar Sensation on Sudani rootstock were sprayed either immediately before bloom or both before and after bloom.”
Claim · model-written summary
Zinc deficiency symptoms decreased but persisted after treatment.
- Taxon
- MangoMangifera indicat0
- Treatment
- application of zince1
- Outcome
- deficiency symptomse0
- Direction
- decreasede0
- Qualifier
- did not disappear completelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deficiency symptoms decreased but did not disappear completely possibly because of other nutrients being deficient too, especially Cu which concentration was below the optimum range.”
t0“Mango”
e1“The application of zinc did increase leaf zinc concentrations”
Claim · model-written summary
Cu concentration was below the optimum range.
- Taxon
- MangoMangifera indicat0
- Outcome
- Cu which concentratione0
- Direction
- belowe0
- Comparator
- optimum rangee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The deficiency symptoms decreased but did not disappear completely possibly because of other nutrients being deficient too, especially Cu which concentration was below the optimum range.”
t0“Mango”
Claim · model-written summary
Micronutrient deficiencies were widespread in Mango orchards in Jazan.
- Taxon
- MangoMangifera indicae0
- Outcome
- widespread micro nutrient deficienciese0
- Setting
- Jazane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study reports for the first time about the widespread micro nutrient deficiencies in Mango orchards in Jazan.”
Claim · model-written summary
Analyses indicated Cu deficiency was a greater problem than Zn deficiency.
- Taxon
- MangoMangifera indicat0
- Outcome
- Cu is more of a probleme0
- Direction
- moree0
- Comparator
- Zn deficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the present case, there were clear indications of Zn deficiency but the analyses showed that Cu is more of a problem.”
t0“Mango”
Claim · model-written summary
Growers should spray micronutrients regularly and adjust high soil pH.
- Taxon
- MangoMangifera indicat0
- Outcome
- spray regularly with micro nutrients and to adjust soil pHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To deal with the wide-spread nutrient deficiency symptoms due to soil alkalinity and lack of consistent fertilization, growers need to spray regularly with micro nutrients and to adjust soil pH which was too high.”
t0“Mango”
Claim · model-written summary
Fertilization decisions based only on visual symptoms may be risky when multiple nutrients are deficient.
- Taxon
- MangoMangifera indicat0
- Outcome
- making fertilization decisions based on visual symptoms alone can be riskye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It should be emphasized that making fertilization decisions based on visual symptoms alone can be risky when multiple essential elements are deficient.”
t0“Mango”
The same questions in other papers
zinc atom · disease · Mangifera indica (mango)Positive and negative results
1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
zinc atom · nutrient: content · Mangifera indica (mango)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.