Yield and nutrient acquisition advantages are frequently found in intercropping systems. However, there are few published reports on soil fertility in intercropping relative to monocultures. A field experiment was therefore established in 2009 in Gansu province, northwest China. The treatments comprised maize/faba bean, maize/soybean, maize/chickpea and maize/turnip intercropping, and their cor...

The expansion of the dairy industry in southern Idaho has led to increased application of manures to meet crop nutrient demands that can alter the uptake pattern of both macronutrients and micronutrients. A greenhouse study was conducted to determine the effects of dairy manure, composted dairy manure, and fertilizer (monoammonium phosphate) application on soil test phosphorus (P), microbial ac...

Background Rising atmospheric CO2 concentrations can increase crop yields; however, it is poorly understood if plants require higher phosphorus (P) inputs to support increased production. In addition, soils with contrasting P-sorption capacities may alter plant response elevated CO2. Aims We examined the effect of on critical soil available P and shoot for growth in capacities. Methods Response...

effects of calcium carbonate and ph on the kinetics of p fixation were studied on four non-calcareous soils treated with different levels of pure caco3, and also on six soils which were adjusted for ph within the range of 5 to 9. soils were also treated with k2hpo4 at the rate of 45 mg p/kg before they were incubated for a period of 100 days at 25○c. soil samples were taken at certain predeterm...

Forest fires can greatly affect soil properties and processes. In the study of fire effects on soil, thickness affected by heat depends characteristics itself, but also attribute to be measured. The objective this work is know what (up 1, 2 or 3 cm) various sensitive are immediately a controlled burning. To achieve aim, unaltered fresh topsoil (mollic horizon) fire-prone Aleppo pine forest in s...

Eutrophication, a major problem in many fresh and brackish waters, is largely caused by nonpoint-source pollution by P from agricultural soils. This lysimeter study examined the influence of P content, physical properties, and sorption characteristics in topsoil and subsoil on P leaching measured during 21 mo in 1-m-long, undisturbed soil columns of two clay and two sandy soils. Total P losses ...