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United States Department of Agriculture

Agricultural Research Service

Research Project: BIOLOGICALLY BASED TECHNIQUES TO LIMIT THE DISPERSAL OF INVASIVE PESTS Title: Demonstrating Integrated Pest Management of Hot Peppers

Authors
item Legaspi, Jesusa
item Gardner, Cassel -
item Queeley, Gilbert -
item Leppla, Norman -
item Cuda, James -

Submitted to: Meeting Abstract
Publication Type: Proceedings
Publication Acceptance Date: May 21, 2009
Publication Date: June 26, 2009
Citation: Legaspi, J.C., Gardner, C., Queeley, G., Leppla, N., Cuda, J. 2009. DEMONSTRATING INTEGRATED PEST MANAGEMENT OF HOT PEPPERS. 6th International IPM Symposium, Portland, OR. Meeting Abstract.

Interpretive Summary: We studied the effects of organic and synthetic chemical fertilizers on crop growth, yield and associated insect pests 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. Plant height and canopy diameter were significantly greater in the mushroom compost treatment for Scotch Bonnet; however, yields were not significantly affected by treatment or variety. The Growers’ practice treatment resulted in lowest plant height in Caribbean Red. The dominant 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. Results indicate that hot peppers may be grown without using insecticides in Florida because insect pests did not reach levels high enough to affect yield. Furthermore, the crops may be grown using relatively inexpensive organic fertilizers because the use of synthetic chemical fertilizers does not result in higher yields. We found that organic methods can be profitable for growers in Florida provided pests remain below economic threshold levels.

Technical Abstract: We studied the effects of organic and synthetic chemical fertilizers on crop growth, yield and associated insect pests 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. Plant height and canopy diameter were significantly greater in the mushroom compost treatment for Scotch Bonnet; however, yields were not significantly affected by treatment or variety. The Growers’ practice treatment resulted in lowest plant height in Caribbean Red. The dominant 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. Results indicate that hot peppers may be grown without using insecticides in Florida because insect pests did not reach levels high enough to affect yield. Furthermore, the crops may be grown using relatively inexpensive organic fertilizers because the use of synthetic chemical fertilizers does not result in higher yields. We found that organic methods can be profitable for growers in Florida provided pests remain below economic threshold levels.amounts of soil nutrients applied to all treatments. The Growers’ Practice treatment permitted use of conventional insecticides if insect pests exceeded economic thresholds. Plant height and canopy diameter were significantly greater in the mushroom compost treatment for Scotch Bonnet; however, yields were not significantly affected by treatment or variety. The Growers’ practice treatment resulted in lowest plant height in Caribbean Red. The dominant 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. Results indicate that hot peppers may be grown without using insecticides in Florida because insect pests did not reach levels high enough to affect yield. Furthermore, the crops may be grown using relatively inexpensive organic fertilizers because the use of synthetic chemical fertilizers does not result in higher yields. We found that organic methods can be profitable for growers in Florida provided pests remain below economic threshold levels.

Last Modified: 10/23/2014
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