Abstract
Two field experiments were carried out during the two successive summer seasons of 2016 and 2017 at a private farm near Kafr saad center, Damietta Governorate, Egypt to study the impact of NPK fertilization at (100%, 50% and 0% NPK of the recommended doses) and some bio-stimulants (without, effective microorganisms (EM) 2ml/L, microbial mixture 1L/20L, yeast extract 10g/L and seaweed extract 1g/L) as well as their interaction on yield and its components and quality parameters of sweet potato plants Abees cultiver. Obtained results showed that increasing NPK fertilization levels from 0% to 100% of the recommended doses gave significant increments in total yield/fed, dry matter and quality parameters i.e. crude protein (%), total carbohydrates (%), starch%, total sugar %, beta-carotene and vitamin-C (vit.c) in tuberous roots of sweet potato in the two seasons. All bio-stimulants treatments increased significantly of all the previous mentioned parameters and decreased nitrate and nitrite contents in tuberous roots compared with untreated plants, EM gave the best values of all studied parameters. Doses 100 % and 50 % NPK plus EM gave the best significant increases in the studied parameters in both seasons and the interaction between 0% NPK plus EM decreased significantly nitrate and nitrite contents in the both seasons.
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Claims 9
Claim · model-written summary
Increasing NPK from 0% to 100% of the recommended dose significantly increased total yield and dry matter of sweet potato.
- Taxon
- Sweet Potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- increasing NPK fertilization levels from 0% to 100% of the recommended dosese1
- Outcome
- total yield/fed, dry mattere1
- Direction
- incrementse1
- Comparator
- 0%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
t0“Sweet Potato”
e1“increasing NPK fertilization levels from 0% to 100% of the recommended doses gave significant increments in total yield/fed, dry matter and quality parameters i.e. crude protein (%), total carbohydrates (%), starch%, total sugar %, beta-carotene and vitamin-C (vit.c) in tuberous roots of sweet potato in the two seasons”
Claim · model-written summary
Increasing NPK from 0% to 100% significantly increased crude protein, total carbohydrates and starch in sweet potato tuberous roots.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- increasing NPK fertilization levels from 0% to 100% of the recommended dosese1
- Outcome
- crude protein (%), total carbohydrates (%), starch%e1
- Direction
- incrementse1
- Comparator
- 0%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Potato”
e1“increasing NPK fertilization levels from 0% to 100% of the recommended doses gave significant increments in total yield/fed, dry matter and quality parameters i.e. crude protein (%), total carbohydrates (%), starch%, total sugar %, beta-carotene and vitamin-C (vit.c) in tuberous roots of sweet potato in the two seasons”
Claim · model-written summary
Increasing NPK from 0% to 100% significantly increased total sugar, beta-carotene and vitamin C in sweet potato tuberous roots.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- increasing NPK fertilization levels from 0% to 100% of the recommended dosese1
- Outcome
- total sugar %, beta-carotene and vitamin-C (vit.c)e1
- Direction
- incrementse1
- Comparator
- 0%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Potato”
e1“increasing NPK fertilization levels from 0% to 100% of the recommended doses gave significant increments in total yield/fed, dry matter and quality parameters i.e. crude protein (%), total carbohydrates (%), starch%, total sugar %, beta-carotene and vitamin-C (vit.c) in tuberous roots of sweet potato in the two seasons”
Claim · model-written summary
All bio-stimulant treatments significantly increased yield, dry matter and quality parameters of sweet potato relative to untreated plants.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- bio-stimulantse2
- Outcome
- all the previous mentioned parameterse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Potato”
e2“All bio-stimulants treatments increased significantly of all the previous mentioned parameters”
Claim · model-written summary
All bio-stimulant treatments decreased nitrate and nitrite contents in sweet potato tuberous roots compared with untreated plants.
- Taxon
- Sweet PotatoIpomoea batatast0
- Organ / stage
- tuberous rootse3
- Outcome
- nitrate and nitrite contentse3
- Direction
- decreasede3
- Comparator
- untreated plantse3
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Potato”
e3“decreased nitrate and nitrite contents in tuberous roots compared with untreated plants”
Claim · model-written summary
Effective microorganisms (EM) gave the best values of all studied parameters in sweet potato.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- EMe4
- Outcome
- best values of all studied parameterse4
- Direction
- best valuese4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Potato”
e4“EM gave the best values of all studied parameters”
Claim · model-written summary
100% NPK plus EM gave the best significant increases in the studied parameters of sweet potato in both seasons.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- 100 %e5
- Outcome
- studied parameterse5
- Direction
- best significant increasese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Potato”
e5“Doses 100 % and 50 % NPK plus EM gave the best significant increases in the studied parameters in both seasons”
Claim · model-written summary
50% NPK plus EM gave the best significant increases in the studied parameters of sweet potato in both seasons.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- 50 % NPK plus EMe5
- Outcome
- studied parameterse5
- Direction
- best significant increasese5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Potato”
e5“Doses 100 % and 50 % NPK plus EM gave the best significant increases in the studied parameters in both seasons”
Claim · model-written summary
The interaction of 0% NPK plus EM significantly decreased nitrate and nitrite contents of sweet potato in both seasons.
- Taxon
- Sweet PotatoIpomoea batatast0
- Treatment
- 0% NPK plus EMe6
- Outcome
- nitrate and nitrite contentse6
- Direction
- decreased significantlye6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweet Potato”
e6“the interaction between 0% NPK plus EM decreased significantly nitrate and nitrite contents in the both seasons”
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