The efficacy and economics of different IGR's, insecticides and bio-rational against Spodoptera litura (Fabr.) in soybean, revealed that at three days after first and second sprays the rynaxypyr (64.52%) and emamectin benzoate (58.84% reduction) respectively proved to be the most effective. At seven days more percent reduction in larval population found in chlorpyriphos (53.76 %) and quinalphos (58.59%) where as at 14 days the diflubenzuron (59.72%) and quinalphos (53.42%) found to be the more effective after first and second sprays respectively. Significantly higher seed yield was recorded in rynaxypyr 20 SC followed by spinosad 45SC. The highest gross income and net profit was recorded in rynaxypyr 20 SC.

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Maharashtra contributes paltry 0.76 per cent of the total production of tasar silk in the country, with 23 MT but the production of tasar silk in the state is found to be dwindling which might be due to the gaps in knowledge and adoption of improved tasar silkworm rearing technologies. Therefore, present investigation was undertaken to assess the gaps in adoption of tasar silkworm rearing technologies and constraints faced by the tasar farmers in adopting the recommended technologies. The study was conducted in Bhandara, Gondia and Gadchiroli districts of Maharashtra. The “Ex-post facto” research design was used for the study. A total 120 tasar silkworm rearing farmers were randomly selected for the study from those selected districts. The data was analyzed using SPSS software. The results showed that the major gaps in adoption were seen the practices such as Integrated Pest Management for the control of gall disease (91.67%), application of Farm Yard Manure (FYM) or vermi-compost @4 kg/plant or 2kg/plans twice in a year (87.50%) and foliar spraying of 1.5% urea twice @ 15 days’ interval before 30 days of rearing (78.33%) and these were ranked 1st, 2nd and 3rd, respectively. The average gaps in adoption were 52.71 per cent. Similarly, non-availability of quality seeds/Dfls for rearing, non availability of disease resistance/tolerant silkworm races, non-enhancement of seed cocoon/reelable cocoon prices due to non-availability of formal and fair market, no hand holding support during the crop failure from the government, outbreak of diseases due to weather fluctuation and difficulty in adoption of recommended package of practices due to insufficient fund were the major constraints experienced by the tasar silkworm rearers. Thus, proper research, extension, communication and training strategies are needed to be formulated so that the constraints faced in adoption will be removed and the gaps in adoption could be bridged in order to accelerate the rate of adoption of modern tasar silkworm technologies in state and, thus, increasing the scope for boosting the tasar silk production of the state in the years to come.

Aim: Seed production is the backbone of sericulture in India. In order to cater for the increased demand for seed (egg), the already prevailing seed production techniques need to replace with new and robust techniques. Therefore, the present study was designed to understand the oviposition preference of Antheraea mylitta and selected suitable host plants for future improvement of seed production. Methodology: Choice (nylon net cage) and no-choice (earthen cup) experiments were conducted to study the oviposition preference of A. mylitta on Shorea robusta, Terminalia tomentosa, T. arjuna, Ziziphus mauritiana, Careya arborea, Syzygium cumini and Buchanania lanzan. Mated female moths were released freely into the nylon cage to observe their oviposition preference in the choice test. Whereas, half of both fore wings and hind wings of mated female moths were excised and individually placed in an earthen cup for oviposition. The total number of eggs laid on the host plants in both experiments was recorded and analysed. Results: Mated females released freely within the cage have laid the majority of their eggs on the floor and net instead of their host plants. Among the host plants, the highest number of oviposition was recorded on the S. robusta, T. tomentosa and T. arjuna compared to other host plants. The highest number of eggs per moth was observed on T. tomentosa and followed by S. robusta, T. arjuna and Z. mauritiana, and exceeded the numbers of eggs in the control in the no-choice experiment. Interpretation: The study revealed that both S. robusta and T. tomentosa were highly preferred host plants of A. mylitta for oviposition. Therefore, the volatiles or feeding supplements of S. robusta and T. tomentosa may be identified and applied to A. mylitta during rearing and grainage to enhance seed production. Key words: Host plants, Oviposition preference, Sericulture, Tasar silkworm, Terminalia tomentosa

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