Influence of various planting techniques and time on development of bollworm (Helicoverpa armigera Hubn. Lepidoptera: Noctuidae) and plant development in cotton
Abstract
The influence of various planting
technique and time on the population developments of cotton bollworm (Helicoverpa armigera Hubn) in cotton was
investigated in Adana province, Turkey in 2008-2009. Three planting techniques,
ridge, flat and mulching were deployed. Cotton was planted at 15-days intervals
in March-April period. There was two
generations of the bollworm at boll forming-maturation period in July-August.
Densities of bollworms in plots planted in mid- and late April were higher but
significantly lower in plots planted in March (P<0.05). Although larval
densities, which appeared in plots planted in mid- and late April, and exceed
4-fold of the threshold level of bollworm in late July in 2009, decreased
numbers of green bolls, this case did not reduce cotton yield in those plots; in
reverse, cotton yields was the highest in all plots planted in mid-April. Yield
of cotton sown at the latest date (late April) was the lowest. Although there
were some differences, the highest cotton yield was obtained from the mulching
technique (pooling over planting dates). Consequently, it is commented that planting
of cotton by mulching technique in mid-April would be better cultural practice.
If planting of cotton is getting late after April, damage due to the bollworm
attacks would be increase with a high rate.
Keywords
References
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Details
Primary Language
Turkish
Subjects
-
Journal Section
Research Article
Publication Date
October 17, 2017
Submission Date
February 4, 2017
Acceptance Date
August 1, 2017
Published in Issue
Year 1970 Volume: 7 Number: 2
Cited By
Adana ve Osmaniye illeri yerfıstığı üretim alanlarında Yeşilkurt, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)’nın yaygınlığı, bulaşıklık oranları ve popülasyon değişimi
Harran Tarım ve Gıda Bilimleri Dergisi
https://doi.org/10.29050/harranziraat.891729Population fluctuation and determination of infestation rate of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) in second crop cotton fields in Söke Plain
International Journal of Agriculture, Environment and Food Sciences
https://doi.org/10.31015/jaefs.2026.1.24