Browsing by Author "Meena Kumari"
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ThesisItem Open Access Ecofriendly management of Sclerotinia wilt of French bean (Phaseolus vulgaris L.)(College of Horticulture and Forestry Dr YSP UHF, Neri, Hamirpur(H.P.), 2023-12-28) Meena Kumari; Sharma, MonicaThe fungal pathogen causing Sclerotinia wilt of French bean was isolated and identified as Sclerotinia sclerotiorum on the basis of morphological and cultural characters. Pathogenicity was demonstrated using French bean plants grown in sick pots. Seedlings exhibited symptoms such as water-soaked lesions/rotting, white fluffy cottony mycelial development, and diaback/wilting after 15 days of inoculation. The pathogen was re-isolated from artificially infected plants, and the pathogen's identity was verified. Among Biocontrol agents viz; Trichoderma harzianum and T.viridae excelled in both the dual culture test and the sick pot conditions against S. sclerotiorum. Trichoderma harzianum and T. viridae caused maximum mycelial inhibition of 71.80 and 64.25 percent, respectively. Evaluation of biocontrol agents in sick pots and the timing of biocontrol agent application in soil showed that biocontrol agents applied 7 days earlier were better to those applied simultaneously with or 7 days after the introduction of the pathogen. T. harzianum showed the maximum disease reduction (66.41%) followed by T. viridae with disease reduction (55.48%). Plant height and weight were likewise raised by T. harzianum treatment by 82.87 per cent and 65.66 per cent, respectively, and by T. viridae treatment by 80.63 per cent and 63.44 per cent, respectively. Among different abiotic resistance-inducers evaluated in sick pots against S. sclerotiorum, oxalic acid at 40 mM was found most effective in managing the disease and increasing plant weight. The activity level of key enzymes of plant defence namely phenol, chitinase and β- 1, 3- glucanase was maximum at six days after treatment with abiotic inducers and thereafter declined. Peroxidase and polyphenol oxidase activity peaked at four days following abiotic inducer treatment and thereafter dropped. The chlorophyll content was observed to be highest at 8 days following abiotic inducer treatment and then decreased.ThesisItem Open Access Effect of Foliar Sprays of Micronutrients on Growth, Yield and Fruit Quality of Kinnow Mandarin(2008) Meena Kumari; P.K. YadavThe present study entitled “Effect of foliar sprays of micronutrients on growth, yield and fruit quality of Kinnow Mandarin” was conducted under arid conditions of north western Rajasthan at orchards of Central Institute for Arid Horticulture, Bikaner and laboratory, Department of Horticulture, College of Agriculture, Rajasthan Agricultural University, Bikaner during 2007. The experiment was laid out in Randomized Block Design (RBD).There were 15 treatments replicated three times. Foliar application of micronutrients viz. Fe (0.50%, 1.0%), Cu (0.25%, 0.50%) and Zn (0.50%, 1.0%) alone and in combinations were applied twice (at an interval of one month) in the month of June and July on 6 years old kinnow trees.ThesisItem Open Access Efficacy Of Custard Apple Seed Powder As A Prestorage Treatment For Green Gram Stored In Different Bags(APAU ; Hyderabad, 1983) Meena KumariThesisItem Open Access Impact of environmental changes and organic farming on growth, yield and quality of Ashwagandha (withania somnifera, DUNAL)under Mid Hill conditions of H P(CSKHPKV, Palampur, 2011) Meena Kumari; Upadhyay, R.G.ThesisItem Open Access Socio-emotional intelligence and achievement motivation of adolescents(CCSHAU, 2015) Meena Kumari; Sangwan, SheelaSocio-emotional intelligence is the important psychological abilities that relates to success in life and academic motivation of adolescents. The study was undertaken in Bhiwani district of Hayana state. A total of 80 boys and 80 girls between age group of 13 to 14 years were selected randomly from two government schools from rural area and two private schools from urban area. Social Intelligence scale developed by Chadha (2004) and Emotional Intelligence Scale by Hyde et al (2001) and Achievement Motivation scale by Rao (1974) were used to assess socio emotional intelligence and achievement motivation of adolescents. Results indicated that maximum number of respondents was in average to high category of overall socio-emotional intelligence. The results further revealed positive and significant correlation between achievement motivation with patience, confidence and sensitivity aspects of social intelligence of the respondents. Significant positive correlation existed between adolescent’s emotional intelligence aspects i.e. self motivation, value orientation and altruistic behavior and achievement motivation.ThesisItem Open Access Studies on Impact of Climate Change on Vegetable Crop Production in Mid Hills of Himachal Pradesh(YSPU, 2016) Meena Kumari; Verma, Subhash ChanderThe present investigations entitled “Studies on Impact of Climate Change on Vegetable Crop Production in Mid Hills of Himachal Pradesh” was conducted during the years 2014 and 2015 at the Research Farm of Department of Environmental Science, Dr. YS Parmar University of Horticulture and Forestry, Nauni, Solan, H.P. The study revealed that higher plant height (11.04cm) at maturity, pollen viability (79.90%) was recorded in bell pepper at elevated CO2 . Elevated CO 2 and temperature resulted minimum days (104.17days)to first picking of bell pepper fruits. Bell pepper under elevated CO 2recorded maximum fruit size (40.19cm 2 ), average fruit weight (63.06g/fruit), plant fresh weight (460.15g/plant), dry weight (107.19 g/plant), ash content (23.68%), total phenols (39g/100g), calcium (0.46%) than ambient CO 2 and temperatureand natural condition. Elevated CO2 and temperature recorded minimum chlorophyll (1708.71mg/kg), nitrogen (4.39%), phosphorus (0.25%), potassium (4.48%) and magnesium(0.36 %) as compared to ambient CO 2 and temperature and natural condition. Maximum S. lituralarval period (19.92days), larval weight (0.51g), fecal matter (0.42g), RCR (64.86mg.d-1 ), AD (84.24%), leaf damage (14.52%) and minimum ECI (36.14%) and ECD (43.23%) was under elevated CO 2 . Maximum number aphids (17.08 aphids/plant), maximum Phytophthora blight incidence (22.71%), Cercospora leaf spot severity (15.88%) was recorded under elevated CO2 and temperature. The plant fresh weight (+29.63 %) and plant biomass(+37.53%), average fruit weight (+ 23.63%) and fruit yield (+17.01 %) was higher in Solan Bharpur as compared to California Wonder (fresh weight :+22.48%;biomass:+33.14%;fruit eight:+15.75% and fruit yield: +11.97%) under elevated CO2 over ambient CO2 and temperature. Plants of pea exhibited, higher plant height (97.82 cm) at maturity, pollen viability (78.42 %), leaf water content (89.28 %), leaf area (71.47 cm 2 ), number of pods (45.50 pods/plant), pod length (10.14 cm) pod girth (13.75 mm), highest pod yield (304.53 q/ha), plant dry weight (36.17 g/plant), ash content (11.54 %) and calcium (0.56%) in pea under elevated CO2. Pea leaf miner infestation (14.87 %) was higher under natural condition and lowest under elevated CO 2 (11.97 %). Maximum severity of powdery mildew in pea plants was under elevated CO2 and temperature (16.33 %) and minimum in natural condition (2.96 %). Maximum Fusarism wilt incidence in pea was in elevated CO2 (3.53 %) and minimum in natural condition (2.18 %). The plant fresh weight, plant biomass and ash content increased to +19.74 per cent, +38.21 per cent and 38.20 per cent, respectively in PB - 89 under elevated CO2 in mparison to Azad P - 1 (fresh weight: +18.87 %; biomass: +32.61% and ash content: +37.57%). Number of pods/plant, number of grains/pod, average pod weight and pod yield increased to + 19.65 per cent, + 28.93 per cent, + 44.65 per cent and +36.23 per cent, respectively, in PB – 89 under elevated CO2 as compared to Azad P-1(pods/plant: +17.71 %; number of grains/pod: + 26.92 %; average pod weight: + 35.48 %; pod yield: +31.22 %) . Thus elevated CO 2 worked positively and increased productivity of both crops, however, the positive effects of elevated CO2were negated by interactive effects of elevated CO2 and temperature in the both crops. In case of bell pepper cultivar Solan Bharpur and pea cultivar PB-89 were more adaptable to climate change as compared to California Wonder of bell pepper and Azad P-1of pea, respectively. Hence, Solan Bharpur of bell pepper and PB-89 of pea were better performing cultivars under changing climate in mid hill conditions of Himachal Pradesh.ThesisItem Open Access A study on effects of uniform magnetic field on flow of cholesteric liquid crystals between two relativaly moving parallel hot plates(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-06) Meena Kumari; Sharma, A.K.A study has been conducted on the flow of an incompressible cholesteric liquid crystals with director of unit magnitude between two infinite relatively moving parallel hot plates with the objective: To examine the effects of uniform magnetic field in (x,y,z) directions in the plane of the lower plate which is at rest while the upper plate is motion with a uniform horizontal velocity and the two plates are maintained at different temperature. Differential equations governing the two components of horizontal velocity ( u) and (v) , orientations of directors (θ ) and (Φ) have been formed and solved by using couple stress boundary conditions. In the solution of these equations, we observe that there is no effect of magnetic field on the two velocity components, but they increase with the increase in thermal gradient parameter (E1).The effect of magnetic field on the orientation of molecules (θ) and (Φ) causes variation in their profile.ThesisItem Open Access A study on effects of uniform magnetic field on flow of cholesteric liquid crystals between two relativaly moving parallel hot plates(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-06) Meena Kumari; Sharma, A.K.A study has been conducted on the flow of an incompressible cholesteric liquid crystals with director of unit magnitude between two infinite relatively moving parallel hot plates with the objective: To examine the effects of uniform magnetic field in (x,y,z) directions in the plane of the lower plate which is at rest while the upper plate is motion with a uniform horizontal velocity and the two plates are maintained at different temperature. Differential equations governing the two components of horizontal velocity ( u) and (v) , orientations of directors (θ ) and (Φ) have been formed and solved by using couple stress boundary conditions. In the solution of these equations, we observe that there is no effect of magnetic field on the two velocity components, but they increase with the increase in thermal gradient parameter (E1).The effect of magnetic field on the orientation of molecules (θ) and (Φ) causes variation in their profile.ThesisItem Open Access A study to observe the impact of different types of external effects on cholesteric liquid crystals(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2009-08) Meena Kumari; Sharma, A.K.