Χρήση εντομοπαθογόνων νηματωδών για τη βιολογική αντιμετώπιση των λεπιδοπτέρων εχθρών του λάχανου
Date Issued
2012
Author(s)
Abstract
Cabbage (Brassica oleracea L.) is a year-round vegetable crop cultivated in Cyprus.
One of the most important problems in the production of cabbage is the quantitative and
qualitative damage caused to the edible part of the plant (head) by lepidopteran larvae in
the families Pieridae and Noctuidae (Pieris brassicae, P. rapae, Spodoptera littoralis, and
S exigua). In this dissertation, we contacted a field experiment to evaluate the effectiveness
of the Entomopathogenic nematode (EPN), Steinernema carpocapsae+ hydrate buffer
Biorend R, using three different doses and water as a control, against lepidopterous pests of
cabbage. The effectiveness of the insecticide application was based on the percentage of
marketable cabbage heads at harvest using a scale from 0 to 5 were 0 are the non-infected
plants and 5 are the infected plants.
Cabbage heads were scored as 4 and 5 which indicate that all cabbage heads were
unmarketable. The field experiment showed that EPN’s can not be effective as biocontrol
agents against lepidopterous pests of cabbage under the summer climate conditions in
Cyprus, even though precautionary measures where taken to keep the nematodes moist
(applications late in the afternoon and use of the hydrate buffer Biorent R). EPN’s where
found alive and active in the soil around each plant two months after the last treatment,
indicating that EPN’s could be used as biocontrol agents against soil insect pests.
One of the most important problems in the production of cabbage is the quantitative and
qualitative damage caused to the edible part of the plant (head) by lepidopteran larvae in
the families Pieridae and Noctuidae (Pieris brassicae, P. rapae, Spodoptera littoralis, and
S exigua). In this dissertation, we contacted a field experiment to evaluate the effectiveness
of the Entomopathogenic nematode (EPN), Steinernema carpocapsae+ hydrate buffer
Biorend R, using three different doses and water as a control, against lepidopterous pests of
cabbage. The effectiveness of the insecticide application was based on the percentage of
marketable cabbage heads at harvest using a scale from 0 to 5 were 0 are the non-infected
plants and 5 are the infected plants.
Cabbage heads were scored as 4 and 5 which indicate that all cabbage heads were
unmarketable. The field experiment showed that EPN’s can not be effective as biocontrol
agents against lepidopterous pests of cabbage under the summer climate conditions in
Cyprus, even though precautionary measures where taken to keep the nematodes moist
(applications late in the afternoon and use of the hydrate buffer Biorent R). EPN’s where
found alive and active in the soil around each plant two months after the last treatment,
indicating that EPN’s could be used as biocontrol agents against soil insect pests.
Subjects
File(s)![Thumbnail Image]()
Name
Θεογνωσία..[1].pdf
Size
232.55 KB
Format
Adobe PDF
Checksum (MD5)
bdf18f79dc9564134556d4ae8768d8ee