Effects of Lecanicillium lecanii alone and in 1:1 combination with neem oil were evaluated against Phenacoccus solenopsis infesting major vegetables (eggplant, tomato, chilli, okra, pointed gourd and cucumber) and compared with cotton and whitetop weed (Parthenium hysterophorus Linn.). Marked differences were observed in the mortality of P. solenopsis amongst the vegetables and highest percent mortality (66.2 and 90.2 % at 3 and 5 DAT, respectively) was recorded in okra whereas lowest was in Parthenium (13.9 and 29.9 %) in case of L. lecanii. Similar trends were also followed in neem oil and their 1:1 combination. Amongst all the vegetables, median lethal time (LT50) varied from 38.4 to 184.3, 33.7 to 172.8 and 30.6 to 149.2 h in case of L. lecanii, neem oil and their 1:1 combination, respectively. Lowest LT50 value was noted from of L. lecanii when P. solenopsis fed on okra and their ascending order of median lethal time was Okra > Pointed gourd > Tomato > Chilli > Cotton > Eggplant > Cucumber > Parthenium. Considering the median lethal time of mealybug reared on okra as base (1), time required for L. lecanii for 50 % killing of 6 ± 1 day old nymphs of P. solenopsis was 1.15, 1.38, 2.20, 2.72, 2.75, 2.90 and 4.80 times higher than when fed on pointed gourd, tomato, chilli, cotton, eggplant, cucumber and Parthenium respectively. From the present study, it is clearly evident that strong host mediated variations existed for susceptibility of P. solenopsis to L. lecanii, neem oil and their combination.
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences – Springer Journals
Published: Jun 22, 2016
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera