D. Madhava Sarma*, B. Venkata Rao, S. Seshumuthyalu, NVNB Srinivasa Rao, M.V.Lakshmi, B.Chakravarthi, P.S.S. Sravanthi and
Rice (Paddy) is the main cultivated crop in the Tadepalligudem Tehsil of Andhra Pradesh. Growth and yield of any crop depends on factors like soil fertility and nutrient availability from the soil, besides other soil properties. To know the soil characteristics of the study area, soil samples are collected and analyzed for physico-chemical characteristics like pH, EC, % OC, macronutrients(N,P,K) and micronutrients(Fe, Cu, Zn ,Mn, etc., by using Atomic Absorption Spectroscopy.) Of the 38 representative samples analysed, in 39% of the samples nitrogen level is high and in 19% phosphorus levels are high whereas in 6% of the samples potassium is to the higher side.
Rohini Meher, Bidyutprabha Bhoi, Purnendu Mishra*, Pankaj Kumar
Character recognition is performed off-line after the writing or printing has been completed, as opposed to on-line recognition where the computer recognizes the characters as they are drawn. Both hand printed and printed characters may be recognized, but the performance is directly dependent upon the quality of the input documents. Artificial Neural Networks (ANNs) serve for the emulation of human thinking in computation to a meager, yet appreciable extent. Of the several fields wherein they have been applied, humanoid computing in general and pattern recognition in particular of increasing activity. ANNs have enjoyed considerable success in this area due to their humanoid qualities such as adapting to changes and learning from prior experience. Another approach of character recognition by the process of convolution individual character is convolved with dataset and character in the dataset with which maximum matching comes is assign to that character. In this paper both the methods are discussed with the simulation result.
Y. Poli Naidu*
Telineelapuram bird sanctuary was recognised as globally Area (IBA) by Bombay Natural History Society (BNHS) and Birdlife International.It is located in Telineelapuram village near Tekkali Mandal of Srikakulam district in Andhra Pradesh. Survey was conducted from January 2015 to December 2016 to measure avian diversity in this sanctuary and its wetland vicinity. The Telineelapuram wetland is a winter home to a large number of migratory birds and also provides numerous wetland services to thousands people in the surrounding villages. The objective of the study was to identify the avian diversity in the sanctuary and its surroundings. Data was collected by direct census method. In total 132 bird species belonging to 42 families were recorded.
S. S. Sravanthi Pammi, T. V. S. Padmavathi and Archana Giri*
Present study was aimed for evaluation of free radical scavenging activity of root, stem and leaf extracts of Phyllanthus amarus by DPPH and Nitric oxide assays, where ascorbic acid is used as standard. Various polar and non-polar solvents were used for extraction and for determination of anti-oxidant potential of root, stem and leaves of Phyllanthus amarus. In both DPPH and NOS assays, dimethyl formamide which is a polar solvent exhibited greater anti-oxidant activity compared to other solvents. The anti-oxidant activity for inhibiting free radicals is expressed in terms of IC50, which was calculated using the concentration vs activity curve.
B. Satyanarayana and P. Subhashini Devi*
Tinospora cordifolia is a medicinally important plant. The present study describes in vitro regeneration protocol of T. cordifolia using leaf and nodal segments as explants. The explants were collected and cultured on MS basal medium and also on MS medium supplemented with different concentrations of growth regulators TDZ, BAP, Kn alone and in combination. Callus formation was observed on MS+TDZ (0.1 to 0.5 mg/lit), MS+BAP (1 and 2 mg/lit BAP). Single shoot response was observed on MS+TDZ (0.3mg/lit), MS+BAP (3-4 mg/lit) and MS+Kn (0.5 and 1.5 mg/lit). Higher concentrations of MS+Kn (2 and 3 mg/lit) induces the multiple shoot response. Callus formation occurred from nodal and leaf explants but the shoot response was induced from nodal explants only.
Sarcographina cyclospora Müll. Arg., which was hitherto known from Australia, China, Japan, Sri Lanka and Vietnam, is reported here for the first time from India. The species is characterized by pale brown to olivaceous grey thallus; lirellate ascomata immersed in pseudostromata like elevated pale thalline areas; uncarbonised excipulum; clear hymenium; brown to dark brown, (–6.3) 8–11.5 (–13.8) × 6–8.8 μm ascospores and presence of psoromic acid.
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