Browsing by Author "Tulika"
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ThesisItem Open Access Effect of Cd and Cr (VI) on biochemical constituents in oat (Avena sativa L.) during development(CCSHAU, 2005) Tulika; Gupta, KaushalyaAvena sativa L. cv. HJ-8 plants were raised in earthenware pots filled with 5 Kg sand and treated with requisite amounts of Cd (0, 1, 5, 10, 20 and 40 ppm), Cr (VI) (0.1, 0.2, 0.5, 1.0, 2.5 and 5.0 ppm), and Cd:Cr (5:0.1, 5:0.5, 5:1.0, 20:0.1, 20:0.5 and 20:1.0 ppm) respectively in form of CdCl2 and K2Cr2O7. Chlorosis and tip burning started to appear after 10 ppm Cd and 0.5 ppm Cr (VI). At 5 ppm Cr (VI), very reduced plant height and severe chlorosis was observed followed by delayed flowering at 40 ppm Cd and 2.5 ppm Cr (VI) with no inflorescence emergence at 5.0 ppm Cr (VI) application. All the morphological parameters under study showed stimulation at lower doses (upto 5 ppm Cd and 0.5 ppm Cr (VI)) and then inhibited with further rise in heavy metal ion concentration. The fresh weight attained maximum value at 100 DAS and then decreased at maturity. FW and DW also showed a similar trend with increasing heavy metal ion levels. Photosynthetic pigments increased by 40% at 5 ppm Cd and 20% at 0.2 ppm Cr (VI) at 100 DAS and then decreased with increasing levels of Cd and Cr (VI). Chlorophyll b was found to be more sensitive than chlorophyll a under heavy metal toxicity. EC and pH of leaf leachates was found to be similar for all treatments while slight decrease was observed at higher doses. Nitrogen and nitrate nitrogen content was maximum at 5 ppm Cd, 0.1 ppm Cr (VI) and 5:0.1 ppm Cd:Cr combinations. Maximum reduction in Na and K content was observed at 40 ppm Cd, 5 ppm Cr (VI) and 20:1.0 ppm (Cd:Cr) application. However, the stimulation at lower doses was also observed. Crude fibre content was maximum at maturity with maximum reduction of 10% at higher doses of Cd2+ and Cr6+ ions. Sugar content attained maximum value at 100 DAS. Stimulation at lower doses of Cd and Cr was observed for sugar content which was maximum at 5 ppm Cd (43, 25 and 69%), 0.1 ppm Cr (VI) (40,14 and 38%) and Cd:CrThesisItem Open Access Effectiveness of prebiotic carbohydrates and probiotic in modulation of intestinal microflora and obesity related changes.(NDRI, Karnal, 2010) Tulika; Sharma, R.K.ThesisItem Open Access Evaluation of bioefficacy of Bentazone 48% SL against weeds in maize (Zea mays L.)(Department of Agronomy Institute of Agricultural Sciences Banaras Hindu University Varanasi, 2022) Tulika; Rajesh Kumar Singh, Rajesh Kumar SinghA field experiment was conducted on“Evaluation of bioefficacy of Bentazone 48% SL against weeds in maize (Zea mays L.)” during the kharif (rainy) season of the year 2021 at agriculture Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi. The experiment was laid out in Randomised Block Design with nine treatments and three replications. Treatments T1 Bentazone 48% SL (460 g) T2Bentazone 48% SL (690 g), T3Bentazone 48% SL (799 g), T4Bentazone 48% SL (920 g),T5MCPA – Amine salt 40% WSC (121 g), T6Halosulfuron Methyl 75% WG (67.5 g), T72,4- D Dimethyl Amine salt 58% SL (500 g), T8Weed free check and T9Untreated controlwere assigned.With advancement in crop growth stages all the applied treatments showed decreasing trend of weed count and weed dry matter. Among herbicides T4Bentazone 48% SL (920 g) exhibited minimum weed population, lesser weed dry matter and maximum WCE over other treatments and found at par with T3Bentazone 48% SL (799 g). With effective weed control and lower weed density, T4Bentazone 48% SL (920 g) resulted in attending higher growth parameters viz. plant height, no. of leaves per plant, LAI and plant dry matter accumulation.Yield attributing characters as well as grain and stover yields were significantly highest in Bentazone 48% SL (920 g)as weed index was found lowest. As compared to other varieties, the treatment Bentazone 48% SL (920 g)achieved the highest no. of grains per cob, cob length and cob girth whereas MCPA – Amine salt 40% WSC (121 g)showed the minimum yield attributing characters. Harvest index was highest in Bentazone 48% SL (920 g). These indicated outstanding bioefficacyof Bentazone 48% SL (920 g). Increased uptake of NPK by maize was achieved under weed free condition. Highest gross return (137,612₹ haˉ1), highest net return (96,823₹ haˉ1) and highest benefit:cost ratio (2.37) was obtained at T4 Bentazone 48% SL (920 g).As a result, the weed control treatment of Bentazone 48% SL (920g)produced the best results.