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2018 - 20193
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Author: Monika × End date: 2019 × Start date: 2018 × Type: Thesis ×
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    ThesisItemOpen Access
    An exploratory study on stress level among adolescents and coping mechanism
    (CCSHAU, 2019) Monika; Mehta, Manju
    Adolescence period begin between ages 13 and 19 years and it is the transitional phase from childhood to adulthood. Stress has become a predictable word in the fast turning technical word. Stress has been experienced by almost everyone in all segment of life. The stress was ominous in earlier period now it becomes a normal part of life. The objectives of study were to assess the level of stress among adolescents, to delineate the factors causing stress among the adolescents, to identify the coping mechanism adopted by the adolescents. The present study was conducted in Hisar city of Haryana state. Two government senior secondary schools and two private schools were randomly selected. The two government senior secondary schools were Government Senior Secondary School, Model Town and Government Senior Secondary School, Patel Nagar. The two private schools were New Yashoda Public School, Siddharth International School. 200 adolescents (25 girls and 25 boys) in the age group of 15 to 19 years were selected random from each school. Total sample comprised of 200 adolescents (100 girls and 100 boys). Level of stress was assessed by using the Student Stress Scale by Zaki Akthar (2011). Results revealed that in adolescent girls and boy's main reason of stress was way of living and academic factors. Girls were more stressed due to academic factors whereas cognitive stress was found more among boys. Adolescent's girls and boys experienced moderate level of stress due to stress causing factors. As per the student stress scale level of stress was below average in girls and moderate level in boys of government schools whereas in private school both girls and boys were having moderate level of stress. Adolescent boys experienced more stress as compared to girls. Confusion was the main stress symptoms among adolescents. Adolescents adopted the relaxation technique in the form of listening music and self distraction technique in the form of playing games, watching T.V.
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    ThesisItemOpen Access
    Persistence and leaching behaviour of premix formulation of flubendiamide and buprofezin in soil
    (CCSHAU, 2018) Monika; Duhan, Anil
    In Agrochemicals Residues Testing Laboratory, Department of Agronomy, Chaudhary Charan Singh Haryana Agricultural University a laboratory experiment was conducted to study the persistence behaviour and leaching potential of flubendiamide and buprofezin residues in sandy loam and clay loam soil. To study the persistence behaviour of flubendiamide and buprofezin at single and double dose, i.e., 210 and 420 g a.i./ha, was applied in soil taken in plastic pots. Soil samples were collected periodically on 0 (1h), 1, 3, 7, 10, 15, 30, 45 and 90 days after treatments. In leaching experiment, flubendiamide and buprofezin was applied at 50 (single dose) and 100 μg (double dose) in both soils packed in plexi glass columns. Residues of flubendiamide and buprofezin were estimated by HPLC coupled with Quadrupole Dalton Mass Detector (QDa) and GC-MS-tandem mass spectrometry equipped with capillary column. For both insecticides limit of detection and quantification were 0.001 and 0.005 μg/g, respectively. Dissipation followed a first order kinetics in case of both flubendiamide and buprofezin. Half-life of flubendiamide was found to be 25.1 and 26.6 days in clay loam soil and in case of sandy loam, 27.3 and 31.3 days at both the doses, respectively. For buprofezin, half-life was 12.4 and 12.6 days in clay loam and 19.1 and 20.2 days in sandy loam at both the doses, respectively. The residues were below detectable limit after 45 days in case of flubendiamide for both the treatments however buprofezin residues reached below detectable limit after 60 days. Leaching experiment was carried out in laboratory under continuous flow conditions. The residues of flubendiamide and buprofezin were retained up to soil depth of 30-35 cm but maximum retention was found upto 15 cm in flubendiammide and upto 20 cm in buprofezin. There were no fractions of flubendiamide and buprofezin residues in leachate indicating about poor leaching potential of both insecticides.
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    ThesisItemOpen Access
    Evaluation of management practices against Polyphagotarsonemus latus (Banks) and its role as vector of leaf curl virus in chilli
    (CCSHAU, 2018) Monika; Gulati, Rachna
    Under in vitro 35.00 to 67.27 and 33.89 to 63.89 percent mortality of P. latus was recorded in Direct Spray Bioassay, with 2.5 to 10.0 % and 1.25 to 10.0 % seed and leaf extract concentrations of P. pinnata, respectively. LC50 values of methanolic seed and leaf extract of P. pinnata were 5.36 and 5.31, respectively for mobile stages of P. latus. Under field conditions, the percent reduction in P. latus was from 40.60 to 72.55 percent with all the treatments concentration of P. pinnata. Under in vivo P. pinnata seed extract 10.0% (72.55%), was the most potent in reducing the mite population followed by P. pinnata leaf extract 10.0% (65.10 %), P. pinnata seed extract 7.5 % (62.66 %), P. pinnata seed extract 5.4 % (55.49%), P. pinnata leaf extract 7.5 % (54.98 %), P. pinnata seed extract 5.0 % (48.33%), P. pinnata leaf extract 5.3 % (47.58%), P. pinnata leaf extract 5.0 % (40.16%) and Pyriproxyfen 5% + Fenpropathrin 15% EC (1ml/l H2O) (37. 83%), respectively. Studies on seasonal incidence of P. latus revealed a peak in its population on chilli during second fortnight of October during the respective crop seasons in both the years under field conditions. Strata wise, top strata harboured significantly more number of mites followed by middle and bottom strata. A comparison of mulch treatments showed that Organic mulch 12t/ha was most effective in reduction of P. latus population (79.30 %), followed by Black/Silver polythene sheet (78.50 %), Black/White polythene sheet (78.30 %), Black polythene sheet (77.50 %), Organic mulch 9t/ha (74.70 %) and Organic mulch 6t/ha (65.30 %) treatment as compared to control. In terms of percent increase in yield, Organic mulch 12t/ha caused highest increase (57.90 % over control) followed by Black polythene sheet mulch, Black/Silver polythene sheet mulch, Black/White polythene sheet mulch, Organic mulch 9t/ha and Organic mulch 6t/ha showing 47.49, 46.72, 45.17, 42.47 and 34.36 percent increase over control. P. latus showed non-transmissible nature of virus. Thus it indicated that mite is not a carrier vector for transmission of leaf curl virus into chilli plant.