Abstract
Potassium (K) fertilizer application, as a component of the improved technologies necessary to maximize crop yield and quality, is often used to correct the plant, soil and environmental factors that limit K availability. The effects of 0, 30, 60 and 90 kg K2O ha-1 were studied on hot pepper (Capsicum annuum L; Atarodovariety) in 2014 and 2015 on the Teaching and Research Farm, Ekiti State University, Ado-Ekiti Nigeria in a Randomized Complete Block Design with four replicates. Each K rate was mixed with 75 kg N and 25 kg P2O5 ha-1 and applied 2 weeks after transplanting 5-week old seedlings spaced 60 cm × 40 cm apart. The data of growth parameters were collected at 2 weeks after treatment (WAT) and fortnightly till 10 WAT, number and weight of ripe fruits and fruit proximate composition. The plant height, number of leaves, leaf area and dry matter increased with age and K rates to highest values at 10 WAT and 90 kg K2O ha-1 in both years. The number of fruits, fruit and seed yield ha-1, fruit size, fruit length and breadth and pericarp thickness increased linearly from the control to the highest values at 90 kg K2O ha-1.The number of fruits and yield at 90 kg K2O ha-1 were 1.253×106, 14.24 t ha-1; and 3.73×106, 14.94 t ha-1 in 2014 and 2015, respectively but the 60 kg K2O ha-1 gave the highest agronomic efficiency. The slight increase in fruit moisture content would not predispose fruits to deterioration while the crude protein and fat, carbohydrate and ash contents, vitamin C and mineral nutrients increased significantly making K application necessary to balance the fertilizer protocol for optimum hot pepper production.
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Claims 11
Claim · model-written summary
Plant height, leaf number, leaf area and dry matter rose with age and potassium rate, peaking at 10 WAT and 90 kg K2O ha-1.
- Taxon
- hot pepper
Capsicum frutescense1 - Treatment
- 90 kg K2O ha-1e0
- Outcome
- plant height, number of leaves, leaf area and dry mattere0
- Direction
- increasede0
- Qualifier
- 10 WATe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant height, number of leaves, leaf area and dry matter increased with age and K rates to highest values at 10 WAT and 90 kg K2O ha-1 in both years”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
Claim · model-written summary
Fruit number, fruit and seed yield, and fruit dimensions increased linearly to the highest potassium rate.
- Taxon
- hot pepperCapsicum frutescense1
- Treatment
- 90 kg K2O ha-1e0
- Outcome
- number of fruits, fruit and seed yield ha-1, fruit size, fruit length and breadth and pericarp thicknesse0
- Direction
- increased linearlye0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of fruits, fruit and seed yield ha-1, fruit size, fruit length and breadth and pericarp thickness increased linearly from the control to the highest values at 90 kg K2O ha-1”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
Claim · model-written summary
At 90 kg K2O ha-1, fruit number was 1.253×106 in 2014.
- Taxon
- hot pepperCapsicum frutescense1
- Treatment
- 90 kg K2O ha-1e0
- Outcome
- number of fruitse0
- Value
- 1.253×106e0
- Qualifier
- 2014e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of fruits and yield at 90 kg K2O ha-1 were 1.253×106, 14.24 t ha-1; and 3.73×106, 14.94 t ha-1 in 2014 and 2015, respectively”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
Claim · model-written summary
At 90 kg K2O ha-1, yield was 14.24 t ha-1 in 2014.
- Taxon
- hot pepperCapsicum frutescense1
- Treatment
- 90 kg K2O ha-1e0
- Outcome
- yielde0
- Value
- 14.24 t ha-1e0
- Qualifier
- 2014e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of fruits and yield at 90 kg K2O ha-1 were 1.253×106, 14.24 t ha-1; and 3.73×106, 14.94 t ha-1 in 2014 and 2015, respectively”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
Claim · model-written summary
At 90 kg K2O ha-1, fruit number was 3.73×106 in 2015.
- Taxon
- hot pepperCapsicum frutescense1
- Treatment
- 90 kg K2O ha-1e0
- Outcome
- number of fruitse0
- Value
- 3.73×106e0
- Qualifier
- 2015e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of fruits and yield at 90 kg K2O ha-1 were 1.253×106, 14.24 t ha-1; and 3.73×106, 14.94 t ha-1 in 2014 and 2015, respectively”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
Claim · model-written summary
At 90 kg K2O ha-1, yield was 14.94 t ha-1 in 2015.
- Taxon
- hot pepperCapsicum frutescense1
- Treatment
- 90 kg K2O ha-1e0
- Outcome
- yielde0
- Value
- 14.94 t ha-1e0
- Qualifier
- 2015e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of fruits and yield at 90 kg K2O ha-1 were 1.253×106, 14.24 t ha-1; and 3.73×106, 14.94 t ha-1 in 2014 and 2015, respectively”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
Claim · model-written summary
The 60 kg K2O ha-1 rate produced the highest agronomic efficiency.
- Taxon
- hot pepperCapsicum frutescense1
- Treatment
- 60 kg K2O ha-1e0
- Outcome
- agronomic efficiencye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 60 kg K2O ha-1 gave the highest agronomic efficiency”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
Claim · model-written summary
Fruit moisture content rose slightly.
- Taxon
- hot pepperCapsicum frutescense1
- Outcome
- fruit moisture contente0
- Direction
- slight increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The slight increase in fruit moisture content would not predispose fruits to deterioration”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
Claim · model-written summary
Crude protein, fat and carbohydrate contents increased significantly.
- Taxon
- hot pepperCapsicum frutescense1
- Treatment
- Potassium (K) fertilizer applicatione2
- Outcome
- crude protein and fat, carbohydratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the crude protein and fat, carbohydrate and ash contents, vitamin C and mineral nutrients increased significantly”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
e2“Potassium (K) fertilizer application”
Claim · model-written summary
Ash, vitamin C and mineral nutrient contents increased significantly.
- Taxon
- hot pepperCapsicum frutescense1
- Treatment
- Potassium (K) fertilizer applicatione2
- Outcome
- ash contents, vitamin C and mineral nutrientse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ash contents, vitamin C and mineral nutrients increased significantly”
e1“hot pepper (Capsicum annuum L; Atarodovariety)”
e2“Potassium (K) fertilizer application”
Claim · model-written summary
The authors recommend potassium application to balance fertilizer protocol for optimum hot pepper production.
- Taxon
- hot pepperCapsicum frutescense0
- Outcome
- K application necessary to balance the fertilizer protocole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“making K application necessary to balance the fertilizer protocol for optimum hot pepper production”
The same questions in other papers
potassium · yield · Capsicum frutescens (hot pepper)Positive and negative results
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- negative
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See all 7 papers →potassium · quality: phytochemicals · Capsicum frutescens (hot pepper)Results agree
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potassium · growth · Capsicum frutescens (hot pepper)Results agree
2 papers in the same direction as this paper
- positive
- positive
fertilization · quality: phytochemicals · Capsicum frutescens (hot pepper)Results agree
7 papers in the same direction as this paper
- positive
- positive
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See all 8 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.