Volume 3, Issue 1-2, February 2015, Page: 13-19
Effects of Physical Barrier and Insect Growth Regulator on Whitefly Control and Yield of Chili Pepper (Capsicum annuum L.)
Rosario Algodon Salas, Dept of Horticulture, College of Agriculture & Food Science, Visayas State University. Baybay City, Leyte, Philippines
Zenaida Cuevas Gonzaga, Dept of Horticulture, College of Agriculture & Food Science, Visayas State University. Baybay City, Leyte, Philippines
Deng-lin Wu, AVRDC-The World Vegetable Center, Shanhua, Tainan, Taiwan
Gregory Luther, AVRDC-The World Vegetable Center, Shanhua, Tainan, Taiwan
Paul Arthur Gniffke, AVRDC-The World Vegetable Center, Shanhua, Tainan, Taiwan
Manuel Celiz Palada, AVRDC-The World Vegetable Center, Shanhua, Tainan, Taiwan
Received: Oct. 5, 2014;       Accepted: Oct. 24, 2014;       Published: Jan. 29, 2015
DOI: 10.11648/j.jfns.s.2015030102.13      View  3518      Downloads  218
Abstract
Whitefly is a serious pest of chili pepper that could cause direct damage on the plant or serve as carrier of viral diseases. A study was conducted at the experimental farm of the Crop and Ecosystem Management Unit of AVRDC-The World Vegetable Center in Tainan, Taiwan, to evaluate the effects of nylon net as physical barrier and pyriproxyfen, an insect growth regulator (IGR), alone or in combination on controlling whitefly and yield of chili pepper. The experiments were laid-out in a randomized complete block design with three replications. The treatments were employed over an open field crop with the crop row covered with nylon net mesh #32 or #50 with or without pyriproxyfen applied at recommended rate. Results revealed that nylon mesh #50 was effective in excluding whiteflies compared to nylon mesh #32. Pyriproxyfen also reduced the number of whitefly count. However, based on a total of five harvests, yield decreased by 27% and 42% under nylon net barrier #50 and #32, respectively, compared to open field cultivation. Plants grown under nylon net were significantly taller in length and had higher leaf area index, or leaf and stem dry matter content but lower the fruit dry matter content.
Keywords
Integrated Crop Management, Nylon Net, Pyriproxyfen, Whitefly, Chili Pepper
To cite this article
Rosario Algodon Salas, Zenaida Cuevas Gonzaga, Deng-lin Wu, Gregory Luther, Paul Arthur Gniffke, Manuel Celiz Palada, Effects of Physical Barrier and Insect Growth Regulator on Whitefly Control and Yield of Chili Pepper (Capsicum annuum L.), Journal of Food and Nutrition Sciences. Special Issue: Food Processing and Food Quality. Vol. 3, No. 1-2, 2015, pp. 13-19. doi: 10.11648/j.jfns.s.2015030102.13
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