Abstract
Two field experiments were carried out during the two successive summer seasons 2003 and 2004 in Borg Nor El-Homse village; Aga district (31° 03-, 31° 23- and 7 m); Dakahlia Governorate, Egypt, to study the effect of potassium and zinc fertilization on the plant growth, yield, chemical constituents of sweet potato roots [Ipomoea batatas L. (Lam)] Abees cultivar. Potassium fertilizer rates (0, 48 and 96 kg K2O fed-1) as potassium sulphate (48% K2O) were arranged in main plots, while foliar application doses of zinc (0, 0.1 and 0.2% Zn fed-1) as zinc sulphate (26% Zn) were subjected in sub-main plots. The studied treatments were in split plot design with three replicates. The growth parameters (plant height, leaves number, stems number, chlorophyll content and leaf area), yield and yield component, chemical composition and nutrients contents and tuber quality were determined in both seasons. The increases in growth parameter, resulting from potassium application, were not significant in both seasons except tuber dry matter in the 1st season as well as plant height and vine dry matter in the 2nd season. Spraying sweet potato with zinc sulphate at a rate of 0.2% increased significantly most growth parameter. The data obtained revealed that the highest yield of sweet potato tubers and high tubers quality were obtained from the interactions between potassium fertilization at 48 kg K2O fed-1 and zinc foliar application at a rate of 0.2%.
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Claims 7
Claim · model-written summary
Potassium increased most growth parameters without statistical significance in either season.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatast0 - Treatment
- potassium applicatione0
- Outcome
- growth parametere0
- Direction
- increasese0
- Qualifier
- both seasonse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“The increases in growth parameter, resulting from potassium application, were not significant in both seasons except tuber dry matter in the 1st season as well as plant height and vine dry matter in the 2nd season”
t0“SWEET POTATO”
Claim · model-written summary
Potassium increased tuber dry matter significantly in the first season.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- potassium applicatione1
- Outcome
- tuber dry mattere0
- Qualifier
- 1st seasone0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“except tuber dry matter in the 1st season”
e1“potassium application”
t0“SWEET POTATO”
Claim · model-written summary
Potassium increased plant height significantly in the second season.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- potassium applicatione1
- Outcome
- plant heighte0
- Qualifier
- 2nd seasone0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height and vine dry matter in the 2nd season”
e1“potassium application”
t0“SWEET POTATO”
Claim · model-written summary
Potassium increased vine dry matter significantly in the second season.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- potassium applicatione1
- Outcome
- vine dry mattere0
- Qualifier
- 2nd seasone0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“vine dry matter in the 2nd season”
e1“potassium application”
t0“SWEET POTATO”
Claim · model-written summary
Zinc sulphate at 0.2% significantly increased most growth parameters.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- zinc sulphate at a rate of 0.2%e0
- Outcome
- growth parametere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying sweet potato with zinc sulphate at a rate of 0.2% increased significantly most growth parameter”
Claim · model-written summary
The combination of potassium at 48 kg K2O fed-1 and zinc foliar application at 0.2% produced the highest tuber yield.
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- potassium fertilization at 48 kg K2O fed-1 and zinc foliar application at a rate of 0.2%e0
- Outcome
- yield of sweet potato tuberse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest yield of sweet potato tubers and high tubers quality were obtained from the interactions between potassium fertilization at 48 kg K2O fed-1 and zinc foliar application at a rate of 0.2%”
Claim · model-written summary
The same combined fertilizer treatment produced high tuber quality.
- Taxon
- sweet potatoIpomoea batatast0
- Treatment
- potassium fertilization at 48 kg K2O fed-1 and zinc foliar application at a rate of 0.2%e0
- Outcome
- tubers qualitye0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high tubers quality were obtained from the interactions between potassium fertilization at 48 kg K2O fed-1 and zinc foliar application at a rate of 0.2%”
t0“SWEET POTATO”
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See all 145 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.