Browsing by Author "Singh, Ranjeet"
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ThesisItem Open Access ThesisItem Open Access Delineation and Study of the Soil-Landscape Relationship of the Anthri-Biharipur Area of Mahendragarh District with Special Reference to the Iron ore Deposits(College of Agriculture Chaudhary Charan Singh Haryana Agricultural University Hisar, 1987) Singh, Ranjeet; Garalapuri, V. NThesisItem Open Access Effect of 17- alpha methyl testosterone on sex reversal and growth in fry of swordtail, Xiphophorus helleri(G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2018-06) Singh, Ranjeet; Chauhan, R.S.The study was conducted to access the “Effect of 17-alpha methyl testosterone on sex reversal and growth in fry of swordtail, Xiphophorus helleri” in aquarium for a period of 3 months. The experimental work was carried out in Wet Lab of the College of Fisheries, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar. Twelve glass aquaria of size 4.0 ft x 1.0 ft x 1.0 ft with the average water depth of 0.65 ft (water volume 80 litres) were used in the experiment. Four treatments with three replications were made. One hundred and twenty fries (0.005 g; 0.49 cm) were divided into 12 groups, having 10 fries in each. To observe the health status and growth, measurement of fishes in terms of weight and length by sampling was done at every 15 days interval. During the study period, the physico-chemical parameters of water samples from all experimental aquaria were analyzed weekly. Sex reversal and survival of fries were estimated at the end of the experiment. The various water quality parameters e.g. water temperature, dissolved oxygen, free CO2, pH and total alkalinity ranged within tolerance limit of the experimental fish. During the study period a significant role of hormone on fry was achieved. The rate of masculinization, 66.66% of male population was found in 90 mg/kg (H3) treatment tank where control showed 53.33% of male population. The rate of masculinization increased with increased hormonal application in a significant way. The maximum length was found in control (T0) treatment i.e. 1.44 cm and maximum weight was also found in control (T0) treatment i.e. 0.272 g. Minimum length and weight were found in H3 treatment group i.e. 0.99 cm and 0.074 g respectively. Length and weight of fishes was decreasing as the concentration of hormone was increasing. It shows that females are converting into males as we know males of swordtail are smaller in size than females.ThesisItem Open Access Effect of Levels of Fertilizers and Zymegold on Productivity of Maize (Zea mays L.)(MPUAT, Udaipur, 2010) Singh, Ranjeet; Sharma, D. D.A field experiment entitled “Effect of levels of fertilizers and zymegold on productivity of maize (Zea mays L.)” was conducted during kharif season of the year 2009 at the Instructional Farm, Rajasthan College of Agriculture, Udaipur. The objectives were to find out effect of levels of fertilizer and zymegold on various aspects of maize crop. The treatment consists combination of four fertility levels (50, 75, 100 and 125% RDF ha-1) and four zymegold spray (water spray, 600, 800 and 1000 ppm) and these sixteen treatments combinations were replicated three times in factorial RBD. The crop was swon on 19/7/2009 and harvested on 24/10/2009.The result revealed that increase in fertility levels of soil upto 125% RDF ha-1 significantly improved plant height and other growth parameters namely dry matter accumulation (g plant-1) at 45, 65, 85 DAS and at harvest, dry matter partitioning in leaf, stem and cobs at various stages and growth efficiency parameters (CGR, RGR, LAI and chlorophyll). Likewise, application of 125% RDF significantly improved yield components (cob weight, grain weight cob-1, shelling %, and 1000-grain weight) consequently produce higher grain, stover and biological yield (4839.22, 6582.28 and 11421.80 kg ha-1 respectively), higher over 50% and 75% RDF. The application of 125% RDF also recorded significantly enhance crude protein of grain over 50% RDF. Application of 125% RDF significantly improved N and P content of grain and stover over 50%, 75% for N and 50%, 75% and 100% RDF for P. The uptake of N and P (grain, stover and total) were significantly increased with application of 125% RDF over remaining treatments. Application of highest fertilizer level (125% RDF ha-1) proved most economic dose of fertilizer as it fetched significantly higher net returns (Rs.35486.0 ha-1) and benefit cost ratio (3.31) compared to least net returns of (Rs.26427.0 ha-1) and benefit cost ratio (2.40) released under 50% RDF. Zymegold spray with 1000 ppm significantly improved dry matter accumulation (g plant-1) at 45, 65, 85 DAS and at harvest, dry matter partitioning in leaf, stem and cob at various stages of the crop as compared to lower concentration and water spray. Consequently, 1000 ppm zymegold spray recorded higher yield attributes (cob weight, grain weight cob-1, shelling % and 1000-grain weight) over water spray. The highest grain, stover and biological yield (5117.59 kg ha-1, 6683.92 kg ha-1 and 11801.5 kg ha-1) were also obtained in 1000 ppm zymegold spray. Smillarly, in same application of zymegold highest content and uptake of nitrogen and phosphorus were also obtained. Further aforesaid treatment improved net return (Rs.36644.0 ha-1) and benefit cost ratio (3.04) which was significantly superior over 600 ppm.ThesisItem Open Access Genetic Analysis Of Yield And Yield Contributing Traits In Pea (Pisum Sativum L.)(Narendra Deva University of Agriculture and Technology;Faizabad, 2007) Singh, Yogendra Pratap; Singh, Ranjeet