Volume 11 | Issue 1 | January

 Abstract

Environmental Chemistry is the scientific study of the chemical and biochemical phenomena that occur in nature. It covers all the realms of human activities and its effect on the environment. Environmental planning is the process of creating and/or carrying out programs, policies and regulation which consider the current and future impact of human development on the natural environments. The field is closely related to the concepts of sustainable development and growth management. This article focus about concept of environmental planning and scope of environmental planning.

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 Keywords

Environmental planning, sustainable development, scope.

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

Heavy metals are naturally occurring elements that have high atomic weight and density atleast five times greater than that of water. Their multiple industrial, domestic, agricultural, medical and technological applications have led to their wide distribution in the environment. Because of high degree of toxicity Arsenic, Cadmium, Chromium, Lead and Mercury rank among the priority metals that are of public health significance. Toxic metals and chemicals are known to induce multiple organ damage. This review article provides effect of toxic metal and chemical in environment and human life.

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Creative Commons Attribution 4.0 and The Open Definition

 Keywords

Toxic metals, environment, biochemical effect

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

Plant growth regulators play an important role to improve the vegetative growth ,yield and seed production in crop plants. In present investigation, foliar application of GA3 increased the number of seeds per fruit upto 25 ppm concentration and beyond 25 ppm , the number of seeds per fruit was gradually reduced with the increasing concentration of GA3 in all the single as well as triple spray. The maximum seed count 39.20 seeds per fruit was recorded at 25 ppm concentration of triple spay as compared to 34.30 in control. It is interesting to note that in NAA treatment, the number of seeds per fruit was much higher as compared to that of GA3 treatment. This increase was found to be directly proportional to the increasing concentrations of NAA upto 50 ppm in all the treatments used. Maximum seed count was recorded in 48.45 per fruit in triple spray of 50ppm NAA and then it was decreased at 100 ppm concentration. MH induced the ovular sterility at all the concentrations and treatments used at all the stages of foliar spray except single spray at S1 stage (30 DAT). In GA3 treatments, 1000 seed weight (seed size) was gradually decreased with the increasing concentrations from 5 to 25 ppm and then it was increased at 50 and 100 ppm concentration at all the stages of single spray (S1,S2&S3) as well as triple spray ( S1+S2+S3 ). Maximum seed weight (seed size) was recorded 5.95 gm in compared to control 4.68gm in triple foliar spray treatment of GA3. In case of NAA treatment, 1000 seed weight was decreased in all the treatments but the decrease was found to be insignificant. MH increased seed size (1000 seed weight) gradually with the increasing concentrations in all the treatments. Among all the three plant growth regulators used in this experiment, maximum 1000 seed weight (5.99 gm) was recorded in triple foliar spray treatment of MH at100 ppm concentration.

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 Keywords

GA3 ( gibberellic acid) , NAA ( naphthalene acetic acid) , MH (maleic hydrazide) , Seed weight (Seed size) , DAT (days after transp lantation).

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Creative Commons Attribution 4.0 and The Open Definition

 Abstract

Organic carbon OC in marine sediments is a critical component of the global carbon cycle, and its degradation influences a wide range of phenomena, including the magnitude of carbon sequestration over geologic timescales, the recycling of inorganic carbon and nutrients, the dissolution and precipitation of carbonates, the production of methane and the nature of the seafloor biosphere. Although much has been learned about the factors that promote and hinder rates of organic carbon degradation in natural systems, the controls on the distribution of organic carbon in modern and ancient sediments are still not fully understood. The result shows that higher OC content (>1.2 to 4.4%) is present in the top 2 m and lower content (<1 to 0.3 %) is present in the rest of the core with minor fluctuation. The low OC content in the early Holocene sediments may be due to the low productivity. High OC content during the late Holocene was due to the higher productivity in the study area.

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Creative Commons Attribution 4.0 and The Open Definition

 Keywords

Organic Carbon, Eastern Arabian Sea, Paleoproductivity, Marine Sediments.

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Creative Commons Attribution 4.0 and The Open Definition