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Background: The legume pod borer, Helicoverpa armigera (Hübner), is one of the most damaging crop pests, including pigeonpea. Host plant resistance is a component of pest management and therefore, we standardize a nylon bag No-Choice Bioassay technique to screen for resistance to H. armigera under field conditions. Methods: Pigeonpea plants were infested with 24 h old 1, 2, 3, 4 and 5 larvae per plant inside the nylon bag. Observations were recorded on pod damage, larval survival, larval weight, pupation, adult emergence and fecundity after 10 days. Result: Pigeonpea varieties AL-201, H03-41 and PAU-881 exhibited lower pod damage (15.89 to 19.77%) and larval weight (12.02 to 13.82 mg). The expression of resistance to H. armigera was associated with trichome density, pod wall thickness and higher amount of phenolic compounds and condensed tannins. Lower trichome density and thin pod walls and higher amounts of sugars rendered the varieties Paras, Manak and Pussa-992 more susceptible to H. armigera. Nylon bag assay can be used to screen and select pigeonpea cultivars for resistance to H. armigera. [ABSTRACT FROM AUTHOR]

The experiments were conducted at CCS HAU, Hisar (Haryana) to study the morpho physico-chemical components of resistance to pod borer, Helicoverpa armigera in pigeonpea with different sowing dates. In different four sowing dates, the minimum pod infestation (1.70%) was recorded in (D4) 3rd week of July sown crop, whereas, it was observed maximum (4.54%) in (D2) 1st week of July sown crop. In different pigeonpea varieties, the minimum mean pod infestation (2.45%) was recorded in AL-201, whereas, the maximum mean pod infestation (3.72%) was recorded in Pusa-992. The glandular (type A) and non-glandular (type B) trichomes on pods of top and middle canopy of the plant and pod wall thickness were associated with resistance to H. armigera, whereas, the non-glandular lengthy (type C) trichomes and pod length were associated with susceptibility to this insect. The expression of resistance to H. armigera was also associated with the high amount of fat, phenol and tannin content. Crude protein and total soluble sugar content were responsible for higher pod infestation. [ABSTRACT FROM AUTHOR]

On Farm Testing of Pheromone trap @ 5/ha + Coriander row (7/8:1) + HaNPV @ 250 LE/ha against pod borer (Helicoverpa armigera L.) management was assessed on farmers field in Nagaur district during 2020-21. Trial was conducted on 10 farmer’s field to know the impact of said technology on chickpea pod borer management. In the demonstrated technologies the chickpea seed production 19.83 q/ha. The percent seed yield increase over the farmer’s practices was 34.11%. The net return in demonstration technology was ` 67036/ha and the same was ` 44525/ha. The incremental benefit cost ratio was 3.26 in demonstration technology as compared to farmer’s/ local check 2.60 respectively. [ABSTRACT FROM AUTHOR]

Field experiments were conducted at CCS Haryana Agricultural University, Hisar during kharif season of 2013 and 2014 to determine the effect of weather parameters on the incidence of pod borer complex on early maturing pigeonpea varieties. The study revealed that the infestation of Helicoverpa armigera and Maruca vitrata started with the onset of bud initiation and reached its peak at flowering stage. The maximum H. armigera larval population (1.83 larvae plant-1) was recorded in 1st week of July sown crop, whereas, the maximum incidence of M. vitrata (21.17 webs plant-1) was recorded in 2nd week of July sown crop. The larval population of H. armigera was significantly and positively correlated with the maximum temperature, followed by minimum temperature.Incidence of M. vitrata was negatively correlated with evening relative humidity and wind speed which was significant at p ≤ 0.05 level of significance. [ABSTRACT FROM AUTHOR]