Abstract
The effects of organic and synthetic chemical fertilizers on crop growth, yield and associated insect pests were studied for two varieties of hot pepper ( Capsicum chinense Jacquin (Solanaceae)): “Scotch Bonnet” and “Caribbean Red” in north Florida. Hot peppers were grown under three treatments: poultry manure; mushroom compost; or “Growers’ Practice”, (conventional pesticides and chemical fertilizers), with equivalent amounts of soil nutrients applied to all treatments. The Growers’ Practice treatment permitted use of conventional insecticides if insect pests exceeded economic thresholds. Results showed that although plant height and canopy diameter were significantly greater in the mushroom compost treatment for Scotch Bonnet, yields were not significantly affected by treatment or variety. The Growers’ practice treatment resulted in lowest plant height in Caribbean Red. Predominant insect pests found were the silverleaf whitefly, Bemisia argentifolii Bellows and Perring (Hemiptera: Aleyrodidae); green peach aphid, Myzus persicae (Sulzer) (Hemiptera: Aphidae); bandedwinged whitefly, Trialeurodes abutilonea (Haldeman) (Hemiptera: Aleyrodidae); and western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae). Significantly more insect pests were found on Caribbean Red than on Scotch Bonnet, but in none of the treatments did pests reach economic injury levels. Therefore, insecticide treatment was not necessary during the seasons tested. Furthermore, the crops may be grown using relatively inexpensive organic fertilizers because the use of synthetic chemical fertilizers does not result in higher yields. Yields realized in the three treatments ranged from average to above average for both varieties of pepper. Findings are consistent with economic reports from other countries. We conclude that organic methods can be profitable for growers in Florida provided pests remain below the economic threshold levels.
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Claims 13
Claim · model-written summary
Mushroom compost increased Scotch Bonnet height and canopy diameter.
- Taxon
- hot pepper
Capsicum frutescenst0 - Material
- Scotch Bonnete0
- Treatment
- mushroom composte0
- Outcome
- plant height and canopy diametere0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height and canopy diameter were significantly greater in the mushroom compost treatment for Scotch Bonnet”
t0“Hot Pepper”
Claim · model-written summary
Yield did not differ significantly by treatment or variety.
- Taxon
- Hot PepperCapsicum frutescenst0
- Outcome
- yieldse0
- Direction
- not significantly affectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“yields were not significantly affected by treatment or variety”
t0“Hot Pepper”
Claim · model-written summary
Growers’ Practice produced the lowest Caribbean Red plant height.
- Taxon
- Hot PepperCapsicum frutescenst0
- Material
- Caribbean Rede0
- Treatment
- Growers’ practice treatmente0
- Outcome
- plant heighte0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Growers’ practice treatment resulted in lowest plant height in Caribbean Red”
t0“Hot Pepper”
Claim · model-written summary
Silverleaf whitefly was a predominant pepper pest.
- Taxon
- Hot PepperCapsicum frutescenst0
- Interactor
- Bemisia argentifolii
Bemisia argentifoliie0pest - Outcome
- Predominant insect pestse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Predominant insect pests found were the silverleaf whitefly, Bemisia argentifolii Bellows and Perring”
t0“Hot Pepper”
Claim · model-written summary
Green peach aphid was a predominant pepper pest.
- Taxon
- Hot PepperCapsicum frutescenst0
- Interactor
- Myzus persicae
Myzus persicaee0pest - Outcome
- green peach aphide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green peach aphid, Myzus persicae (Sulzer)”
t0“Hot Pepper”
Claim · model-written summary
Bandedwinged whitefly was a predominant pepper pest.
- Taxon
- Hot PepperCapsicum frutescenst0
- Interactor
- Trialeurodes abutiloneae0pest
- Outcome
- bandedwinged whiteflye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bandedwinged whitefly, Trialeurodes abutilonea (Haldeman)”
t0“Hot Pepper”
Claim · model-written summary
Western flower thrips was a predominant pepper pest.
- Taxon
- Hot PepperCapsicum frutescenst0
- Interactor
- Frankliniella occidentalis
Frankliniella occidentalise0pest - Outcome
- western flower thripse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“western flower thrips, Frankliniella occidentalis (Pergande)”
t0“Hot Pepper”
Claim · model-written summary
Caribbean Red had significantly more insect pests than Scotch Bonnet.
- Taxon
- Hot PepperCapsicum frutescenst0
- Material
- Caribbean Rede0
- Outcome
- insect pestse0
- Direction
- moree0
- Comparator
- Scotch Bonnete0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significantly more insect pests were found on Caribbean Red than on Scotch Bonnet”
t0“Hot Pepper”
Claim · model-written summary
Pests did not reach economic injury levels in any treatment.
- Taxon
- Hot PepperCapsicum frutescenst0
- Outcome
- pests reach economic injury levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in none of the treatments did pests reach economic injury levels”
t0“Hot Pepper”
Claim · model-written summary
Insecticide treatment was unnecessary during the tested seasons.
- Taxon
- Hot PepperCapsicum frutescenst0
- Outcome
- insecticide treatment was not necessarye0
- Qualifier
- during the seasons testede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“insecticide treatment was not necessary during the seasons tested”
t0“Hot Pepper”
Claim · model-written summary
Synthetic fertilizer did not give higher yields than organic fertilizer.
- Taxon
- Hot PepperCapsicum frutescenst0
- Treatment
- synthetic chemical fertilizerse0
- Outcome
- higher yieldse0
- Direction
- does not result in highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of synthetic chemical fertilizers does not result in higher yields”
t0“Hot Pepper”
Claim · model-written summary
Yields under all three treatments ranged from average to above average.
Verbatim
e0“Yields realized in the three treatments ranged from average to above average for both varieties of pepper”
Claim · model-written summary
Organic methods can be profitable for Florida growers if pests remain below economic thresholds.
- Taxon
- Hot PepperCapsicum frutescenst0
- Outcome
- organic methods can be profitablee0
- Qualifier
- provided pests remain below the economic threshold levelse0
- Setting
- Floridae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic methods can be profitable for growers in Florida provided pests remain below the economic threshold levels”
t0“Hot Pepper”
The same questions in other papers
fertilization · growth · Capsicum frutescens (hot pepper)Positive and negative results
23 papers in the same direction as this paper · 4 in the opposite direction
- positive
- no effect
- no effect
24 papers more in this group
See all 28 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.