Abstract
Phosphate dissolving bacteria (Bacillus megaterium) and /or vesicular-arbuscular mycorrhizal (VAM) fungi (Glomus mosseae, G. fasciculatum and G. aggregatum), were used as biofertilizers for Balady guava (Psidium guajava L.) trees, grown in newly reclaimed sandy calcareous soil, during two successive seasons (2007-2008 and 2008-2009). Obtained results showed that, fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control). The highest values of these measurements were recorded for trees fertilized with the dual fertilizer, followed by the trees fertilized with VAM, then those which received Bacillus megaterium. In both seasons, fertilization of guava trees with VAM fungi and/or B. megaterium, significantly increased fruit weight, fruit number/tree and consequently higher yields (kg./tree) were achieved, compared to the control. The recorded values of the total soluble solids %, L ascorbic acid and pectin in fruits of the inoculated trees were significantly higher than the control. The highest values of these measurements were recorded for trees which received dual fertilizer (VAM plus B. megaterium). Titratable acidity was found to be significantly higher in the fruits of the control than the inoculated ones. In both seasons the lowest values of titratable acidity were recorded for the fruits of the trees inoculated with VAM plus B. megaterium. (Journal of American Science. 2010;6(9):399-404). (ISSN: 1545-1003).
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Claims 15
Claim · model-written summary
VAM fertilization increased guava tree growth and leaf area over control.
- Taxon
- guava
Psidium guajavae0 - Treatment
- VAMe0
- Interactor
- VAMe0symbiont
- Outcome
- growth of the trees, leaf areae0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
B. megaterium fertilization increased guava tree growth and leaf area over control.
- Taxon
- guavaPsidium guajavae0
- Treatment
- B. megateriume0
- Interactor
- B. megaterium
Priestia megateriume0symbiont - Outcome
- growth of the trees, leaf areae0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
Dual biofertilizer increased guava growth and leaf area over control.
- Taxon
- guavaPsidium guajavae0
- Treatment
- VAM plus B. megateriume0
- Interactor
- VAMe0symbiont
- Second interactor
- B. megateriumPriestia megateriume0symbiont
- Outcome
- growth of the trees, leaf areae0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
VAM fertilization increased guava leaf nitrogen, phosphorus and potassium.
- Taxon
- guavaPsidium guajavae0
- Treatment
- VAMe0
- Interactor
- VAMe0symbiont
- Outcome
- leaf nitrogen, phosphorus, potassiume0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
B. megaterium fertilization increased guava leaf nitrogen, phosphorus and potassium.
- Taxon
- guavaPsidium guajavae0
- Treatment
- B. megateriume0
- Interactor
- B. megateriumPriestia megateriume0symbiont
- Outcome
- leaf nitrogen, phosphorus, potassiume0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
Dual biofertilizer increased guava leaf nitrogen, phosphorus and potassium.
- Taxon
- guavaPsidium guajavae0
- Treatment
- VAM plus B. megateriume0
- Interactor
- VAMe0symbiont
- Second interactor
- B. megateriumPriestia megateriume0symbiont
- Outcome
- leaf nitrogen, phosphorus, potassiume0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
VAM fertilization increased guava leaf calcium and magnesium.
- Taxon
- guavaPsidium guajavae0
- Treatment
- VAMe0
- Interactor
- VAMe0symbiont
- Outcome
- calcium, and magnesium contentse0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
B. megaterium fertilization increased guava leaf calcium and magnesium.
- Taxon
- guavaPsidium guajavae0
- Treatment
- B. megateriume0
- Interactor
- B. megateriumPriestia megateriume0symbiont
- Outcome
- calcium, and magnesium contentse0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
Dual biofertilizer increased guava leaf calcium and magnesium.
- Taxon
- guavaPsidium guajavae0
- Treatment
- VAM plus B. megateriume0
- Interactor
- VAMe0symbiont
- Second interactor
- B. megateriumPriestia megateriume0symbiont
- Outcome
- calcium, and magnesium contentse0
- Direction
- increasede0
- Comparator
- un-fertilized (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilization of guava trees with either VAM, B. megaterium or the dual fertilizer (i.e. VAM plus B. megaterium), significantly increased growth of the trees, leaf area, leaf nitrogen, phosphorus, potassium, calcium, and magnesium contents, compared to the un-fertilized (control).”
Claim · model-written summary
Dual fertilizer gave the highest growth and leaf nutrient measurements, ahead of VAM then B. megaterium.
Not reportedTaxon
Verbatim
e0“The highest values of these measurements were recorded for trees fertilized with the dual fertilizer, followed by the trees fertilized with VAM, then those which received Bacillus megaterium.”
Claim · model-written summary
Microbial fertilization increased guava fruit weight, number and yield over control.
- Taxon
- guavaPsidium guajavae0
- Treatment
- VAM fungi and/or B. megateriume0
- Interactor
- VAM fungie0symbiont
- Second interactor
- B. megateriumPriestia megateriume0symbiont
- Outcome
- fruit weight, fruit number/tree and consequently higher yields (kg./tree)e0
- Direction
- increasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both seasons, fertilization of guava trees with VAM fungi and/or B. megaterium, significantly increased fruit weight, fruit number/tree and consequently higher yields (kg./tree) were achieved, compared to the control.”
Claim · model-written summary
Inoculation increased guava fruit soluble solids, ascorbic acid and pectin over control.
- Treatment
- inoculatede0
- Outcome
- total soluble solids %, L ascorbic acid and pectine0
- Direction
- highere0
- Comparator
- the controle0
Not reportedTaxon
Verbatim
e0“The recorded values of the total soluble solids %, L ascorbic acid and pectin in fruits of the inoculated trees were significantly higher than the control.”
Claim · model-written summary
Dual fertilizer produced the highest fruit composition values.
- Treatment
- dual fertilizer (VAM plus B. megaterium)e0
- Interactor
- VAMe0symbiont
- Second interactor
- B. megateriumPriestia megateriume0symbiont
- Outcome
- these measurementse0
- Direction
- higheste0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values of these measurements were recorded for trees which received dual fertilizer (VAM plus B. megaterium).”
Claim · model-written summary
Guava fruit acidity was higher in controls than inoculated trees.
Not reportedTaxon
Verbatim
e0“Titratable acidity was found to be significantly higher in the fruits of the control than the inoculated ones.”
Claim · model-written summary
Dual inoculation gave the lowest guava fruit acidity in both seasons.
- Treatment
- VAM plus B. megateriume0
- Interactor
- VAMe0symbiont
- Second interactor
- B. megateriumPriestia megateriume0symbiont
- Outcome
- titratable aciditye0
- Direction
- loweste0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both seasons the lowest values of titratable acidity were recorded for the fruits of the trees inoculated with VAM plus B. megaterium.”
The same questions in other papers
inoculation · quality: sugar starch · Psidium guajava (guava)Results differ
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- no effect
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See all 8 papers →mycorrhiza · nutrient: content · Psidium guajava (guava)Results agree
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- positive
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mycorrhiza · yield · Psidium guajava (guava)Results agree
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- positive
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- positive
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See all 9 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.