Ekrem Atakan
Department of Plant Protection,
Faculty of Agriculture, University of Cukurova, 01330, Adana/Turkey
ABSTRACT
The effects of pure nitrogen fertilization at various rates on development of flower thrips, Frankliniella occidentalis (Pergande), Frankliniella intonsa (Trybom) (Thysanoptera: Thripidae) and plants were investigated in cotton fields in the Cukurova region of Turkey in 2000 and 2002. Three levels of nitrogen fertilization (kg pure N ha-1): 70 (low rate), 140 (medium rate) and 210 (high rate) were applied to experimental plots. The high rate of nitrogen treatment positively affected the population development of both thrips until the mid-August, after which the abundance of thrips species was negatively associated with rates of nitrogen fertilization, when high colonization of flowers by Frankliniella thrips species from surrounding vegetation occurred. High nitrogen fertilization did not contribute to a consistent increase in the abundance of both thrips species. The relationships between nitrogen fertilization and abundance of flowers were positive and significant for most sampling dates in both years. The fruiting development of plants in medium and high fertilization plots was similar but significantly higher than in low fertilization plots.
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How to cite this article
Ekrem Atakan, 2006. Effect of Nitrogen Fertilization on Population Development of Frankliniella sp. (Thysanoptera: Thripidae) in Cotton in Eastern Mediterranean Region of Turkey. Journal of Biological Sciences, 6: 868-874.
DOI: 10.3923/jbs.2006.868.874
URL: https://scialert.net/abstract/?doi=jbs.2006.868.874
DOI: 10.3923/jbs.2006.868.874
URL: https://scialert.net/abstract/?doi=jbs.2006.868.874
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