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Management of Insecticide Resistant Helicoverpa armigera Lepidoptera: Noctuidae) in Cotton in India

OAR@ICRISAT

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Relation http://oar.icrisat.org/5239/
 
Title Management of Insecticide Resistant Helicoverpa armigera Lepidoptera: Noctuidae) in Cotton in India
 
Creator Russell, D A
Singh, J
Jadhav, D R
Surulivelu, T
Regupathi, A
Kranthi, K R
 
Subject Agriculture-Farming, Production, Technology, Economics
Fertilizer Appications
Entomology
 
Description Helicoverpa armigera (Habner) was responsible for some $500 million of damage in India in
the 1997-8. Insecticide resistance levels have been monitored routinely at sites throughout the
countl)' since 1992 using discriminating dose assays. Resistance to pyrethroids is ubiquitous
and stable at around 50-80% in most areas. Organophosphate and endosu(fan resistance is
stable at around 20-50%. Carbamate resistance is low. There is-...(. ll:.rrently no significant
resistance to Bt. Putting in place effective, economic, insecticide-based programmes that do
not exacerbate the resistance problems, is a priority. Field trials from 1992-5 at 1CR1SAT
developed appropriate 1PMI1RM practices in pigeonpea Clnd cotton. In 1995-6 these were
takell illto 'split-plot' 1PMIIRM farmer trials in Andhra Pradesh (AP). Seed cotton yields were
slightly enhanced with a 23% reduction in the number oj insecticide sprays and a 57%
reduction in the a.i. applied. In expanded trials in 1996-7 trials in AP and Tamil Nadu,
insecticide use was reduced by over 40% and yields enhanced by 30%. Components of the
package included appropriate varietal selection, seed quality and agronomy and improved
spraying practices with quality materials based on scouting to simple economic thresholds.
Early season spraying for sucking pests was avoided by the use of systemic seed dressings.
The sequence used for bollworms was: Eggs: at low numbers - neem; at high numbers -
profenojos, Larvae: 1st round: endosulfan; 2nd round OPs (quinalphos or chlorpyrifos); 3rd
round,' carbamates (carbaryl); 4th round - pyrethroids (cypermethrin, fen valerate. deltamethrin
or lambda cyhalothrin). In the 1997-8 season farmer participatol)' demonstrations were
undertaken in four states (Punjab, Andhra Pradesh, Maharashtra and Tamil Nadu). In all
areas spray applications were at least halved with respect to non-participating farmers' and
yields rose by at least a third. The work was expanded in the 1998-9- season.
 
Date 1998
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/5239/1/Manag_insecticideResistant_Helicoverpa_armigera.pdf
Russell, D A and Singh, J and Jadhav, D R and Surulivelu, T and Regupathi, A and Kranthi, K R (1998) Management of Insecticide Resistant Helicoverpa armigera Lepidoptera: Noctuidae) in Cotton in India. In: Proceeding of the World Cotton Research Conference, 6-12 Sept 1998, Athens, Greece.