Daun
semambu sebagai penghalau siput
Azadirachta indica
seed as potential biopesticides for controlling golden apple snail, Pomacea
canaliculata in rice cultivation
Abstract
The golden
apple snail, Pomacea canaliculata is an invasive alien pest that seriously
affects rice cultivation in many Asian countries. These freshwater molluscs
devour young rice seedlings, causing extensive damage to both transplanted and
direct seed.
Most Asian
farmers resort to short-term solutions by using molluscicides that have
negative impacts on non-target organisms, aquatic biodiversity, and the
environment.
Due to the
toxic hazards of the synthetic insecticides, biological control through botanical
pesticides is the best alternative for reducing the golden apple snail damage
in paddy fields.
Neem or
also known as Azadiractha indica have been proven by present investigations
that neem trees have the molluscicidal potential to the golden apple snails.
The
purposes of this study were to determine the most effective extraction of
different fresh and dried neem seed and to identify LC 50 value
for fresh and dry neem seed by using methanol extraction for controlling golden
apple snail.
The LC50 of
golden apple snail treated with different concentration of fresh and dried neem
seeds using methanol extraction were determined using bioassay method.
The dry
neem seed with the methanol extract gave a high mortality rate compared to the
fresh neem seed with the methanol extract to the golden apple snail.
The LC50 of
methanol extraction with dried neem seed for golden apple snails was 180,590
ppm with the 95% confidence limit range of 147,200 -210,980.
Meanwhile,
the LC50 of methanol extraction with fresh neem seed for golden
apple snails was 267,960 ppm with the 95% confidence limit range of 224,880
-317,960.
Based on
finding, dried neem seed using methanol extraction have potential as
biopesticide for management of golden apple snail and its application can be
provided an alternative way for sustainable pest control in rice cultivation
.
.
No comments:
Post a Comment
Note: only a member of this blog may post a comment.