Life Sciences

The present study deals with the diversity and distribution of fungal and bacterial population in various seasons (Monsoon, Premonsoon, Summer, Postmonsoon) from three different places of Mayiladuthurai Taluk.The physicochemical parameters of the collected soil samples were collected. The physical parameters includes the analysis of soil colour, texture, Electrical conductivity, salinity, pH, moisture content and temperature. The chemical parameters include the analysis of Calcium, Magnesium. Zinc, Iron, Manganese and Copper present in three different villages of Mayiladuthurai Taluk.

Melia azedarach.L is a medicinal plant .Aqueous extract of leaves, bark and seeds of Melia azedarach.L were assayed at 1, 5 and 10g/L concentration with different time period to check the presence of phytochemicals and their allelopathic effect on seed germination, fresh and dry weight and seedling growth of Pennesitium americanum. Result revealed that aqueous extracts of   plant at all concentration and time period had significantly inhibited seed germination of P.ammericanum L. when compared with control.

Ten Napier grass accessions were evaluated for agronomic performance and nutritive values at Holetta agricultural research center during the main cropping seasons of 2011-2014. The experiment was conducted in randomized complete block design with three replications. Diammonium phosphate (DAP) fertilizer at the rate of 100 kg/ha was uniformly applied at planting and additionally urea at the rate of 50 kg/ha was top dressed after each forage harvesting.

Vetch species and their accessions were evaluated for seed yield and yield components at Holetta (nitosol) and Ginchi (vertisol) conditions in the central highlands of Ethiopia. The experiment was conducted in randomized complete block design with three replications. The seed yield and its related performance were highly influenced by environment and hence comparatively higher seed yield and its related performance were recorded at Ginchi than Holetta.

The words ‘’Chemistry” and “Alchemy” have been derived from “Khem”, an ancient name for Egypt. The history of chemistry represents a time span from ancient history to the present. By 1000 BC, civilizations used technologies that would eventually form the basis to the various branches of chemistry. Many chemists lived long ago, so what happened a long time ago is history. Chemistry analyzes the composition of different substances, their physical and chemical properties and the specific conditions under which they combine with other substances.

Synthetic dyes and pigments are used in a wide range of industries. The present study was carried out to detect the non-permitted dyes added to bakery and dairy products. Different types of products were collected from local areas of Allahabad like 8 samples of cake, 8 samples of pastry were analysed for identification of the added synthetic food colours and it was found that 2 out of

The present study deals with the diversity, of soil fungi from different Agricultural fields and un cultivated soils of Nagapattinam Taluk Nagapatinam District, Tamil Nadu. Soil samples were collected at various seasons (Monsoon, Premonsoon, Summer, Postmonsoon) from three villages. The physico chemical parameters of the soils were identified. The physical parameter includes the analysis of pH, moisture content and temperature of the soils.

The present investigation was conducted in the litchi orchard of Sh. S.S. ParmarNangal, Pathankot and in the laboratory of department of horticulture, Khalsa College, Amritsar in the year 2015 to assess the effect of foliar application of zinc sulphate and boron both at the concentrations of 0.3 %, 0.6% and 0.9% on the yield and quality of litchi cv. Dehradun. The results of the study indicated that the application of boron 0.9% resulted in maximum fruit weight (22.17 g), fruit size (4.31 x 3.71 cm), pulp weight (17.22 g) and fruit yield per tree (116.74 kg).

Salinity is the most damaging factor towards crop production. Observing the possible role of thiourea in salinity tolerance, experiments were carried out using optimized thiourea level (400 µM) at which two maize hybrids may show improved growth and physiological attributes in autumn and spring seasons.

Strategies of managing and controlling devastating bacterial wilt of tomato are investigated by fitting binary logistic models to data consisting of dummy response variable of its incidents on reported cases to the plant clinics. Binary logistic methods are used for fitting such models to data describing the distribution and incidents of bacterial wilt (BW) caused by Ralstonia solanacearum on tomato crop. The approach overcomes some of the difficulties encountered when fitting ordinary least square regression to a dummy response variable.