Abstract
During 2012 and 2013 seasons, attempts were carried out for replacing 40 to 80 % mineral N by spraying seaweed extract at 2 %, yeast at 2 % or vitamins A & D & K each at 50 ppm in Ewaise mango orchards situated at upper Egypt conditions. A remarkable promotion on the leaf area, chlorophylls a & b, total carotenoids, total chlorophylls, leaf total carbohydrates %, leaf C/N as well as nutrients namely N P K Mg, Zn, Fe and Mn in the leaves, fruit retention %, yield and fruit quality was observed with supplying the trees with the suitable N (1000 g N/ tree/ year) through 60 to 80 % mineral source in combined with spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppm in relative to using N completely via mineral source or when mineral N was added at percentages lower than 60 %. Both total acidity % and nitrite content in the pulp were greatly reduced. Using N as mineral N at percentages lower than 60 % gave unfavourable results. For replacing 40 % of mineral N as well as improving yield and fruit quality of Ewaise mango trees grown under upper Egypt conditions, it is advised to fertilize the trees with N at 1000 g N/ tree/ year via 60 % mineral N plus spraying seaweed extract four times at 2 %. (Faissal, F. Ahmed, Ahmed, M. M. A. Akl and Ahmed, A. F. Oraby. Partial Replacement of Inorganic Nitrogen Fertilizer by Spraying Some Vitamins, Yeast and Seaweed Extract In Ewaise Mango Orchard under Upper Egypt Conditions. Stem Cell 2013;4(3):1-13) (ISSN 1545-4570). http://www.sciencepub.net/stem. 1
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Claims 9
Claim · model-written summary
Partial mineral N replacement with spray treatments promoted leaf area, chlorophylls a and b, and total carotenoids in Ewaise mango compared with full mineral N.
- Taxon
- mango
_from_India.jpg?width=60)
Mangifera indicae0 - Material
- Ewaisee0
- Treatment
- spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppme2
- Outcome
- leaf area, chlorophylls a & b, total carotenoidse1
- Direction
- promotione1
- Comparator
- using N completely via mineral sourcee2
- Setting
- upper Egypt conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“in Ewaise mango orchards situated at upper Egypt conditions”
e1“A remarkable promotion on the leaf area, chlorophylls a & b, total carotenoids, total chlorophylls, leaf total carbohydrates %, leaf C/N as well as nutrients namely N P K Mg, Zn, Fe and Mn in the leaves, fruit retention %, yield and fruit quality was observed”
e2“spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppm in relative to using N completely via mineral source”
Claim · model-written summary
Partial mineral N replacement with spray treatments promoted total chlorophylls, leaf total carbohydrates and leaf C/N in Ewaise mango compared with full mineral N.
- Taxon
- mangoMangifera indicae0
- Material
- Ewaisee0
- Treatment
- spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppme2
- Outcome
- total chlorophylls, leaf total carbohydrates %, leaf C/Ne1
- Direction
- promotione1
- Comparator
- using N completely via mineral sourcee2
- Setting
- upper Egypt conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Ewaise mango orchards situated at upper Egypt conditions”
e1“A remarkable promotion on the leaf area, chlorophylls a & b, total carotenoids, total chlorophylls, leaf total carbohydrates %, leaf C/N as well as nutrients namely N P K Mg, Zn, Fe and Mn in the leaves, fruit retention %, yield and fruit quality was observed”
e2“spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppm in relative to using N completely via mineral source”
Claim · model-written summary
Partial mineral N replacement with spray treatments promoted leaf N, P and K in Ewaise mango compared with full mineral N.
- Taxon
- mangoMangifera indicae0
- Material
- Ewaisee0
- Treatment
- spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppme2
- Outcome
- nutrients namely N P Ke1
- Direction
- promotione1
- Comparator
- using N completely via mineral sourcee2
- Setting
- upper Egypt conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Ewaise mango orchards situated at upper Egypt conditions”
e1“A remarkable promotion on the leaf area, chlorophylls a & b, total carotenoids, total chlorophylls, leaf total carbohydrates %, leaf C/N as well as nutrients namely N P K Mg, Zn, Fe and Mn in the leaves, fruit retention %, yield and fruit quality was observed”
e2“spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppm in relative to using N completely via mineral source”
Claim · model-written summary
Partial mineral N replacement with spray treatments promoted leaf Mg, Zn and Fe in Ewaise mango compared with full mineral N.
- Taxon
- mangoMangifera indicae0
- Material
- Ewaisee0
- Treatment
- spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppme2
- Outcome
- Mg, Zn, Fee1
- Direction
- promotione1
- Comparator
- using N completely via mineral sourcee2
- Setting
- upper Egypt conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Ewaise mango orchards situated at upper Egypt conditions”
e1“A remarkable promotion on the leaf area, chlorophylls a & b, total carotenoids, total chlorophylls, leaf total carbohydrates %, leaf C/N as well as nutrients namely N P K Mg, Zn, Fe and Mn in the leaves, fruit retention %, yield and fruit quality was observed”
e2“spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppm in relative to using N completely via mineral source”
Claim · model-written summary
Partial mineral N replacement with spray treatments promoted leaf Mn in Ewaise mango compared with full mineral N.
- Taxon
- mangoMangifera indicae0
- Material
- Ewaisee0
- Treatment
- spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppme2
- Outcome
- Mne1
- Direction
- promotione1
- Comparator
- using N completely via mineral sourcee2
- Setting
- upper Egypt conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Ewaise mango orchards situated at upper Egypt conditions”
e1“A remarkable promotion on the leaf area, chlorophylls a & b, total carotenoids, total chlorophylls, leaf total carbohydrates %, leaf C/N as well as nutrients namely N P K Mg, Zn, Fe and Mn in the leaves, fruit retention %, yield and fruit quality was observed”
e2“spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppm in relative to using N completely via mineral source”
Claim · model-written summary
Partial mineral N replacement with spray treatments promoted fruit retention, yield and fruit quality in Ewaise mango compared with full mineral N.
- Taxon
- mangoMangifera indicae0
- Material
- Ewaisee0
- Treatment
- spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppme2
- Outcome
- fruit retention %, yield and fruit qualitye1
- Direction
- promotione1
- Comparator
- using N completely via mineral sourcee2
- Setting
- upper Egypt conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Ewaise mango orchards situated at upper Egypt conditions”
e1“A remarkable promotion on the leaf area, chlorophylls a & b, total carotenoids, total chlorophylls, leaf total carbohydrates %, leaf C/N as well as nutrients namely N P K Mg, Zn, Fe and Mn in the leaves, fruit retention %, yield and fruit quality was observed”
e2“spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppm in relative to using N completely via mineral source”
Claim · model-written summary
Spraying with seaweed extract, yeast or vitamins reduced total acidity and nitrite content in the pulp of Ewaise mango.
- Taxon
- mangoMangifera indicae0
- Treatment
- spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppme2
- Outcome
- total acidity % and nitrite contente5
- Direction
- reducede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Ewaise mango orchards situated at upper Egypt conditions”
e2“spraying seaweed extract at 2 %, yeast at 2 % or vitamins A, D & K each at 50 ppm in relative to using N completely via mineral source”
e5“Both total acidity % and nitrite content in the pulp were greatly reduced”
Claim · model-written summary
Mineral N at percentages lower than 60% gave unfavourable results in Ewaise mango.
- Taxon
- mangoMangifera indicae0
- Treatment
- mineral N at percentages lower than 60 %e6
- Outcome
- resultse6
- Direction
- unfavourablee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Ewaise mango orchards situated at upper Egypt conditions”
e6“Using N as mineral N at percentages lower than 60 % gave unfavourable results”
Claim · model-written summary
Replacing 40% of mineral N with 60% mineral N plus four sprays of seaweed extract at 2% is advised to improve yield and fruit quality of Ewaise mango trees.
Verbatim
e7“For replacing 40 % of mineral N as well as improving yield and fruit quality of Ewaise mango trees grown under upper Egypt conditions, it is advised to fertilize the trees with N at 1000 g N/ tree/ year via 60 % mineral N plus spraying seaweed extract four times at 2 %”
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