“Key Informant Survey” of Production, Value, Losses and ... - DfID

B. cucurbitae Ccumber,
ridge gourd
Carpomyia
vesuviana
South
Andaman
Ranganath et
al.
1997 A number of botanical and chemical insecticides were tested against B. cucurbitae on cucumber [Cucumis
sativus] and ridge gourd [Luffa acutangula] in South Andaman, India, in June-August 1996. Neem oil at 1.2% was
the most effective treatment in reducing damage to cucumber (mean percentage damage 6.2%, as compared
with 39.0% in the control), while neem cake at 4.0% and DDVP [dichlorvos] at 0.2% were the most effective
against the pest on ridge gourd, reducing damage to 9.1-9.5% as compared with 32.9% in the control.
Jujube Hyderabad Rao et al. 1995 In field trials carried out in Hyderabad, Andhra Pradesh, during 1992, monocrotophos (0.05%) was the most
effective out of 9 insecticides tested against Carpomyia vesuviana in ber [Ziziphus mauritiana].
B. cucurbitae Bitter gourd South India Ravindranath
and Pillai
B. cucurbitae Bitter gourd Rajandranagar,
Andhra
Pradesh
Zaprionus
paravittiger
[Z. indianus]
Zaprionus
paravittiger
[Z. indiana]
1986 Bitter gourd (Momordica charantia) cultivar MC23 was sprayed with one of 4 pyrethroid insecticides or malathion
at 48, 78 and 102 days after sowing for control of the tephritid B. cucurbitae. Fruit set was not affected by the
treatments. Permethrin, fenvalerate, cypermethrin (all at 100 g a.i./ha) and deltamethrin at 15 g a.i./ha were all
more effective in reducing damage than the standard malathion at 500 g a.i./ha up to 16 days after the first and
second sprays. By the third spray, all 5 insecticides exerted a similar degree of control. There was no significant
variation among the treatments in the number of female flowers formed and fruits set; on average over the whole
season, 37-53 % of fruits were damaged under pyrethroid treatments, 59% with malathion and 87% in unsprayed
plots.
Reddy 1997 In a field experiment, 8 insecticides were sprayed on bitter gourd (Momordica charantia) against B. cucurbitae at
fortnightly intervals between 30 and 90 days after sowing. Triazophos was the most effective insecticide against
the pest.
Rup and
Bangla
1995 Larvae (68- to 72-h-old) of Zaprionus paravittiger [Z. indianus] were fed on methoprene or precocene
II incorporated in diets at 100 and 500 p.p.m. for 24- and 48-h intervals at 25±2°C and 60-70% RH
and LD 9:15. The quantitative estimation for protein revealed that feeding of larvae on low concn (100
p.p.m.) of methoprene for 24 h increased the protein content, whereas higher concn (500 p.p.m.) or
longer feeding intervals at both concn decreased the protein content. The protein content was
reduced with both concn and feeding intervals for precocene II treatment. Methoprene treatment
increased the glycogen content at both concn, except for 500 p.p.m. with longer exposure, while
precocene II decreased glycogen content. Both growth regulators suppressed the trehalose content.
Rup et al. 1996 The second-instar larvae of Zaprionus paravittiger [Z. indiana] were treated with diflubenzuron using 2
concentrations (100, 1000 ppm) at 24 and 48h intervals. Analysis for the hydrolytic enzymes revealed an
increase in esterase and alkaline phosphatase activity after 24h of feeding, but a decline in enzyme activity was
observed with prolongation of the exposure interval to 48h compared with that in the control. Nevertheless, the
acid phosphatase activity was suppressed with diflubenzuron treatment at both time intervals.
Integrated Management of Fruit Flies in India: Knowledge Review 69 of 110