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

B. dorsalis Mango Kanpur, Uttar
Pradesh
Dwivedi et al. 2003 Investigations were carried out during 1997-98 at Kanpur, Uttar Pradesh, India to monitor the
seasonal incidence of insect pests of 20-year-old mango trees in relation to mean temperature and
humidity. The population of mealy bug (Drosicha mangiferae) was highest (84.6) at the base of the
tree trunk in February and lowest (0.58) in December. Leaf hopper (Amritodus atkinsoni) appeared
in March and reached its peak (87.9/10 leaves) in June. The incidence of (Inderbella quadrinatala)
ranged from 1.2 (July) to 8.6 ribbons/plant (January). Gall formation by Apsylla cistellata started in
July and gradually increased during August, September and October. Fruit fly (B. dorsalis) was first
observed in April with 3% infestation, gradually increased in May (8.2%) and June (9.8%) and
slightly declined in July (8.3%). The maggots fed on fruit pulp, resulting in premature fruit falling.
Mango Maharastra Godse and Bhole 2002 Studies on natural incidence of fruit flies on Alphonso mango indicated (at Maharastra) that the
fruits harvested before June were free from fruitfly infestation also showed that regular collection
and destruction of fallen, ripe or decaying fruits can reduce fruit fly population in orchards as
fruitflies preffred the ripening fruits for egg laying.
B. zonata Grewal and Kapoor 1987 Methyl eugenol used as a bait in a new collapsable fruitfly trap (GK trap) in the field found that the
number of flies/catch ranged from 150 to 700. B. zonatus was the dominant sp., accounting for up
to 98% of the catch.
B. dorsalis, B.
zonata
Mango, guava Himachal
Pradesh
Gupta and Bhatia 2001 The fruit fly (B. dorsalis and B. zonata) population was monitored with the help of bottle traps
containing 100 ml aqueous solution of 0.1% methyl eugenol and 0.25% malathion per trap, in
mango and guava orchards of submountainous region of Himachal Pradesh. The maximum catch
of 98.6 and 62.6 males/trap for mixed population was recorded during 30th and 27th standard
weeks in 1992 and 1993, respectively, in mango orchard. The corresponding catch in guava
orchard was 427.2 and 517.0 during the 37th and 39th standard weeks. There was a significant
positive correlation between the trap catch and maximum and minimum temperatures during both
the years for both the hosts. The maximum catch coincided with the ripening period of fruits.
Integrated Management of Fruit Flies in India: Knowledge Review 33 of 110