Plants acquire phosphorus (P) from the soil in order to reach the intracellular concentrations necessary for growth and reproduction. To prevent P starvation, both monocotyledonous and dicotyledonous plants have evolved well-regulated systems for inorganic phosphate (Pi) scavenging, acquisition, and recycling. Phosphate starvation responses (PSR) in plants include release of organic acids and h...

The pool of soil organic carbon (SOC) in the Arctic is disproportionally large compared to those in other biomes. This large quantity of SOC accumulated over millennia due to slow rates of decomposition relative to net primary productivity. Decomposition is constrained by low temperatures and nutrient concentrations, which limit soil microbial activity. We investigated how nutrients limit bacte...

Abstract. Acid sulfate wetlands are widespread in the New South Wales (NSW) coast, Australia. Acid sulfate soils have caused severe environmental problems in the area with land scalding, accompanied by the discharge of highly acidic drain water into estuarine waterways being the worst-case scenario in these landscapes. The investigated acid sulfate scalds are characterized by an extremely acidi...

The mechanisms underlying the retention of inorganic N in acidic forest soils in southern China are not well understood. Here, we simultaneously quantified the gross N transformation rates of various subtropical acidic forest soils located in southern China (southern soil) and those of temperate forest soils located in northern China (northern soil). We found that acidic southern soils had sign...

introduction: iron cycle is one of the most important biogeochemical processes which affect the availability of iron in soils. ferric iron oxides are the most abundant forms of iron in soils and sediments. ferric iron is highly insoluble at circumneutral ph. present investigations have shown that the structural ferric iron bound in clay minerals is reduced by some microorganisms. anaerobic bact...

Abstract The data sources for the study were results of a continuous agrochemical (for 3 cycles) and soil erosion survey soils, as well official statistical data. period was characterized by an increase in content organic matter 0.35%, alkaline hydrolyzable nitrogen 20 mg/kg, pH acidity degree 0.15 units, reduction amount medium acidic soils 16.4%. It found that on poorly eroded decreases 0.4%,...