• V M Pawar

      Articles written in Proceedings – Animal Sciences

    • Life tables for the gram pod borer,Heliothis armigera Hubner (Lepidoptera: Noctuidae) on pea

      G G Bilapate V M Pawar

      More Details Abstract Fulltext PDF

      Studies on the innate capacity for increase in numbers ofHeliothis armigera were carried out at 26±1°C temperature on pea podsPisum sativum. The net reproductive rate (R0) representing the total female births was 407·39. The population increased with an infinitesimal rate (rm) of 0·1346 and finite rate (λ) 1·14 per female per day. A generation was completed in 44·64 days. The population on reaching a stable age distribution comprised approximately 99 per cent of immature stages.

    • Biometrical analysis of growth in the larvae ofHeliothis armigera Hubner

      G G Bilapate V M Pawar A K Raodeo

      More Details Abstract Fulltext PDF

      Measuring the width of the head capsule ofHeliothis armigera Hbn. at different stages of development larvae fall into five well defined group each characteristic of an instar, when reared on alfalfa (Medicago sativa) leaves and sorghum earhead (sorghum vulgare) at a constant temperature of 26 ± 1°C. Przibram’s rule cannot be applied to increase in the linear dimensions of larva in its successive stages. However, variations in the value of the linear progression factor show that Przibrarm’s progression principle is of doubtful significance in the case of this pest.

    • Life fecundity tables forHeliothis armigera Hubner (Lepidoptera: Noctuidae) on sorghum earhead

      G G Bilapate V M Pawar

      More Details Abstract Fulltext PDF

      Heliothis armigera Hubner is a serious pest of sorghum earhead. Studies to determine the rate of multiplication of its population were conducted at 26 ± 1°C temperature and 75% relative humidity. Under a given set of conditions and food supply its population on sorghum earhead increased with an infinitesimal and finite rate. The population multiplied 285·06 times between two successive generations and one generation was completed within 46·71 days. The population on reaching the stable age-distribution comprised approximately 99% of immature stages.

    • Effect on the growth and yield due to the aphid,Dactynotus sonchi Linn. in safflower

      D S Suryawanshi V M Pawar

      More Details Abstract Fulltext PDF

      Field experiments were conducted in paired plots to assess the losses due toDactynotus sonchi Linn. in the yield of safflower in two successive winters 1977–78 and 1978–79. The percentage losses in the number of capitula per plant and in seed yield have been calculated and discussed. Excepting the secondary branches per plant, all the yield contributing characters and the seed yield showed significant differences in treated and untreated plots.

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