; Studies on the distribution of different fOrulS of sulphur in seven widely occurring soil series representing five great groups viz. Udorthents, Fluvaquents, Dystrochrepts, Hapludalfs and Hapludolls indicated that non sulphate-sulphur, mostly contributed to the total sulphur (86.7%) followed by organic-sulphur (10.0%) and sulphate-sulphur (3.3%). All forms of sulphur had significant positive ...

Sulphur is one of the emerging plant nutrients, required for pulse crops. After nitrogen, phosphorous and potassium, it forth key nutrient nutrition. It taken up by plants in form sulphates from soil. The factors that are responsible wide spread deficiency sulphur excess use high analysis fertilizers, inadequate crop residue, yielding varieties crops its removal plays a pivotal role overall pro...

Four-week-old seedlings of Grindelia camporum Greene were planted in a mild calcareous alluvial soil collected from Mahibullapur, in Lucknow district (26 300 N latitude–80 300 E longitude) in pot culture. The soil, rated sulphur deficient on the basis of available soil sulphur, was fertilized with calcium sulphate to provide sulphur at the rate of 10, 25, 50, and 100 mg kg 1 soil. Observations ...

Elevated arsenic concentrations have been observed in shallow groundwater in the Cold Lake-Beaver River Basin (CLBR) of Alberta. The geology of this area includes up to 200 m of unconsolidated glacial deposits, with six regional interglacial sand and gravel aquifers, underlain by marine shale. Arsenic concentrations in unconsolidated sediment samples ranged between 1 to 17 ppm. Mineralogical ch...

A novel, anaerobically grown microbial biofilm, scraped from the inner surface of a borehole, 1474 m below land surface within a South African, Witwatersrand gold mine, contains framboidal pyrite. Water flowing from the borehole had a temperature of 30.9 degrees C, a pH of 7.4, and an Eh of -50 mV. Examination of the biofilm using X-ray diffraction, field emission gun scanning electron microsco...

Acid mine drainage (AMD) from abandoned coal mines continues to be one of the most significant environmental problems. Remediation of AMD requires an addition of lime source to decrease the acidity, and grouting the entire mine and encapsulating the pyrite by calcium-rich additives is often employed. Utilization of alkaline coal combustion by-products (CCBs) has gained acceptance in such remedi...

Citation Sun, Ruoshi et al. " Intrinsic stoichiometry and oxygen-induced p-type conductivity of pyrite FeS_{2}. " Physical Review B 84 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. ...

Black shales in the geologic record have long been considered to reflect deposition under anoxic or even euxinic conditions. Although bottom-water anoxia favors deposition of black shales, certain biological indicators, such as benthic fossils and bioturbation, suggest that bottom-water conditions may not have been as persistently anoxic as commonly presumed. Examination of twelve marine carbon...

to study the effects of different amounts of sulphur and boron fertilizers on grain yield and grain quality of bread wheat cultivar pishtaz, an experiment was conduncted in karaj during two cropping seasons 2001-2003. three levels of sulphur (s0= 0, s1=250 and s2= 500 kgha-1) and three levels of boron (b0= 0, b1= 20 and b2= 40 kgha-1) were different treatments of the experiment arranged in rcbd...