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2005 - 200912010 - 20142
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Author: Singh, Anand × Start date: 2004 × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Effects Feeding Ammonia (Urea) Treated Baled Wheat And Paddy Strow On Nutrient Utilisation Blood Metabolites And Cost Effectiveness On The Production Performance Of Crossbred Lactating Cows
    (Govid Ballabh Pant University Of Agriculture And Technology Pantnagar : Uttaranchal, 2005) Singh, Anand; Jaiswal, R.S.
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    ThesisItemOpen Access
    Effect of some state variables on adsorption insecticide and its dissipation behaviour in soils of varying characteristics
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2014-04) Singh, Anand; Srivastava, Anjana
    Five soils were selected for adsorption-desorption studies while two soils were used for dissipation studies with contrasting differences in physicochemical properties. Analysis of fipronil was done by RP-HPLC. Instrument detection limit (IDL) of fipronil was as 0.06 μg mL-1. Simplified QuEChERS method gave 83 to 95.4 % recoveries of fipronil from water and soils. EMDL of different methods ranged from 0.027 to 0.72 μg mL-1or g-1. Equilibration time of fipronil on soils was determined by the batch equilibration method. And found to be 12 h. Fipronil sorption on soils conformed to pseudo-second order kinetics model. Weber–Morris intraparticle diffusion model indicated that clay and organic carbon content influence the sorption of the fipronil on soils. The Freundlich isotherm constants KF varies from 1.519 (S3 soil) to 5.556 (S1 soil) and n ranged from 0.665 to 1.195. Freundlich desorption isotherm showed than adsorption of fipronil in soils were irreversible. Langmuir isotherm parameter did not fit to experimental data. Temkin adsorption isotherm yielded lower correlation coefficients. The magnitude of the correlation coefficients for the D–R isotherms ranged form 0.8984 to 0.9665. With increase in ionic strength adsorption of fipronil slightly increase in S3 and S5 soils and slightly decrease in S2 soil while in soil S1 and S4 it remains almost unaffected. And desorption data showed no response to the ionic strengths. Adsorption of fipronil was decrease with increase in temperature on soils under study. The pH had little effect on adsorption of fipronil on soils. The half life values of fipronil for non-amended soils were 53.3 days (S6 soil) and 49.5 days (S7 soil). The maximum reduction in half life was resulted in Farmyard manure (FYM) amended soils which were 40.7 (S6) and 36.4 days (S7) followed by Pressmud compost (PMC) amended soils and fresh cow dung (FCD) amended soils. Among cereal straw amended soils half life of fipronil was reduced by ~4 days in S6 soil and no changes occurred in S7 soil. Comparison of half lives of fipronil with C/N values showed that there was an increase in the dissipation of fipronil as the C/N decreased. The half life of fipronil from noninoculated soils was 49.5 days (S6 soil) and 46.2 days (S7 soil). The half life value of fipronil from soils inoculated with bacteria M1, M2 and M3 showed a faster dissipation in initial phase (from 15.06 to 18.72 days) and slower degradation in later phase (46.2 to 57.75 days). Soils inoculated with bacteria M4 showed degradation through a single phase with half life of 36.47 (S6 soil) and 33.00 days (S7).
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    ThesisItemOpen Access
    Determining heterotic response, combining ability and gene action for yield and yield contributing TRAITS IN COWPEA (Vigna unguiculata (L.) Walp.)
    (G.B. Pant University of Agriculture & Technology, Pantnagar - 263145 (Uttarakhand), 2014-08) Singh, Anand; Singh, Y.V.
    The present investigation was carried out during 2012-2013 at G.B. Pant University of agriculture and Technology, Pantnagar. First experiment was undertaken to estimate the relative importance of combining ability and heterosis for 11 quantitative characters including seed yield in cowpea (Vigina unguculata (L). Walp). Second experiment was conducted to understand the nature of gene effects involved in the inheritance of various quantitative characters. Pant Lobia-1, Pant Lobia-2, Pant Lobia-3, PGCP-12, PGCP-14, Bucksora Local and Pant Vegetable-3 along with their 21 F1’s were evaluated for genetic analysis using Griffing’s numerical approach (1956). Six generations viz;- P1, P2, F1, F2, BC1 and BC2 of each three families, PGCP-12 x PGCP-14 (Family 1), Pant Lobia-1x PGCP- 14 (Family 2), Pant Lobia-1x Pant Lobia-3 (Family 3), were evaluated in Compact Family Block Design with three replications and data were subjected to generation mean analysis following scaling test (Mather 1949). Analysis of variance revealed significant mean squares of general and specific combining abilities (GCA and SCA) for all the traits studied. Pant lobia-2 and Pant Lobia-3 had good GCA for seed yield per hectare. Pant Lobia-1 was best general combiner for 100-seed weight and number of pods per plant whereas, Pant Lobia-2 was found to be good general combining ability for number of pods per plant, seed yield per hectare and seed weight per plant. The parent Pant Lobia-3 had good general combiner for seed yield per hectare, seed weight per plant and days to pod maturity whereas, PGCP-12 was good general combiner for plant height, seed yield per hectare, 100-seed weight and seed weight per plant. Buksoura Local and PVCP-3 were good general combiners for green pod weight per plant and pod length. The hybrids PGCP-12 x PGCP-14 and PGCP-14 x PVCP-3 revealed highest SCA effects for seed yield per hectare. The magnitude of relative heterosis, heterobelteosis and economic heterosis for seed yield per hectare ranged from -18.24 to 63.34%, -18 .40 to 47.69% and -4.66 to 93.40% respectively. Pant Lobia-2 x Pant Lobia-3 was best cross combination for days to 1st flowering, Pant Lobia-2 x PVCP-3 for days to pod maturity, Pant Lobia-1x Pant Lobia-2 for number of pods per plant. Cross PGCP-14 x PVCP-3 showed highest value for pod length, Pant Lobia-3 x PGCP-12 was the best cross combination for plant height. Cross PGCP-12 x PGCP-14 gave highest positive SCA effect for green pod weight per plant. For number of seeds per pod Pant Lobia-3 x PGCP-12 was the best cross combination, Cross PGCP-14 x PVCP-3 for seed weight per plant and the Cross Pant Lobia-1 x Pant Lobia-3 for 100-seed weight. Significant estimates of additive [d] and dominance [h] effects as well as all three epistasis were observed for most of the quantitative characters in all the three families. The opposite signs of [h] and [l] indicated that duplicate epistasis was important in inheritance for some of the traits in all the three families. In the present investigation both additive and non-additive gene actions were involved in controlling seed yield and related traits. The presence of additive gene action suggested that a part of the heterosis can be fixed in subsequent generations to take advantage in further selection. The preponderance of non-additive gene action, however brought out that heterosis component could be explained in hybrid development in cowpea.