Abstract
Two field experiments were conducted during the two successive summer seasons of 2009 and 2010 at the Experimental Farm of the National Research Centre in El-Nobaria region, Behira Governorate, to investigate the response of sweet pepper plants cv. California wonder to different rates of potassium fertilization (50, 100 and 200 kg/fed.) as potassium sulfate in addition to foliar application by potassium oxide (2 and 4 cm/L) and potassium humate (4 gm/L) as a stimulative dose. Potassium foliar applications were made 3 times in a 15 days interval with the same doses during the growing period (30, 45 and 60 days after transplanting). The highest potassium fertilization rate (200 kg/fed.) gave the tallest sweet pepper plants, the highest number of leaves and branches per plants and the highest fresh and dry weights of leaves as well as the highest total yield. Also, the obtained results reported that the fruit measurements expressed as fruit length, average fruit weight and vitamin C content, as well as leaves chemical composition (N, P, K and total chlorophyll) were increased with increasing potassium fertilization rate. On the other hand, spraying sweet pepper plants with potassium humate at rate of 4 gm/L markedly increased vegetative growth, yield, fruit quality and chemical composition. The favorable effects of the potassium on the growth, total yield and fruit parameters were obtained when sweet pepper plants fertilized with 200 kg/fed. potassium sulfate plus foliar application of potassium humate 4 gm/L followed statistically by 200 Kg/fed. potassium sulfate with foliar application of either 2 or 4 gm/L potassium oxide with no significant differenced between them but both of them were significantly higher than control.
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Claims 6
Claim · model-written summary
The 200 kg/fed. potassium rate gave the tallest plants, most leaves and branches, and highest leaf fresh and dry weights.
- Taxon
- sweet pepper plants
Capsicum annuume0 - Treatment
- 200 kg/fed.e0
- Outcome
- tallest sweet pepper plants, the highest number of leaves and branches per plants and the highest fresh and dry weights of leavese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest potassium fertilization rate (200 kg/fed.) gave the tallest sweet pepper plants, the highest number of leaves and branches per plants and the highest fresh and dry weights of leaves as well as the highest total yield.”
Claim · model-written summary
The 200 kg/fed. potassium rate gave the highest total yield.
- Taxon
- sweet pepper plantsCapsicum annuume0
- Treatment
- 200 kg/fed.e0
- Outcome
- total yielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest potassium fertilization rate (200 kg/fed.) gave the tallest sweet pepper plants, the highest number of leaves and branches per plants and the highest fresh and dry weights of leaves as well as the highest total yield.”
Claim · model-written summary
Increasing potassium rate increased fruit length, fruit weight and vitamin C content.
- Taxon
- Sweet Pepper PlantsCapsicum annuumt0
- Treatment
- potassium fertilization ratee0
- Outcome
- fruit length, average fruit weight and vitamin C contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruit length, average fruit weight and vitamin C content, as well as leaves chemical composition (N, P, K and total chlorophyll) were increased with increasing potassium fertilization rate.”
t0“Sweet Pepper Plants”
Claim · model-written summary
Increasing potassium rate increased leaf N, P, K and total chlorophyll.
- Taxon
- Sweet Pepper PlantsCapsicum annuumt0
- Treatment
- potassium fertilization ratee0
- Outcome
- leaves chemical composition (N, P, K and total chlorophyll)e0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaves chemical composition (N, P, K and total chlorophyll) were increased with increasing potassium fertilization rate.”
t0“Sweet Pepper Plants”
Claim · model-written summary
Potassium humate spray increased growth, yield, fruit quality and chemical composition.
- Taxon
- sweet pepper plantsCapsicum annuume0
- Treatment
- potassium humate at rate of 4 gm/Le0
- Outcome
- vegetative growth, yield, fruit quality and chemical compositione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spraying sweet pepper plants with potassium humate at rate of 4 gm/L markedly increased vegetative growth, yield, fruit quality and chemical composition.”
Claim · model-written summary
Potassium sulfate plus humate had the most favorable growth, yield and fruit effects; sulfate plus oxide followed, and both oxide doses exceeded control without differing significantly.
- Taxon
- sweet pepper plantsCapsicum annuume0
- Treatment
- 200 kg/fed. potassium sulfate plus foliar application of potassium humate 4 gm/Le0
- Outcome
- growth, total yield and fruit parameterse0
- Direction
- favorablee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The favorable effects of the potassium on the growth, total yield and fruit parameters were obtained when sweet pepper plants fertilized with 200 kg/fed. potassium sulfate plus foliar application of potassium humate 4 gm/L followed statistically by 200 Kg/fed. potassium sulfate with foliar application of either 2 or 4 gm/L potassium oxide with no significant differenced between them but both of them were significantly higher than control.”
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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.