Abstract The study was based on the distribution of soil carbon and nitrogen orders in a dryland farming system Aceh Besar District, Indonesia. Soil samples were taken to represent 6 (six) drylands Besar, namely: Andisols, Entisols, Inceptisols, Mollisols, Oxisols, Ultisols. For each order, 5 observation profiles made, profile sampled at 7 (seven) depths from 0-100 cm, 0-0.05 m; 0.05-0.10 0.10-...

Biochar is one of the important recycling methods in sustainable development, as it ensures transformation agricultural wastes into fertilizers and conditioners that improve soil properties fertility. In current study, corn cob-derived biochar (CB) was used to reduce negative effects saline water on quinoa (Chenopodium cv. Utosaya Q37) grown Aridisols Entisols, which are major groups Egyptian s...

Some of these soil orders such as Ultisols and Oxisol account for 34% of the area of major soil orders in the tropics. These orders occupy great amounts of land (approximately 1,666 million hectares) in Africa and South and Central America (Fig. 2). Histosols and sandy Entisols also contain low levels of Si (57). As a result of Si leaching, the soluble Si content of tropical soils, such as Ulti...

the kinetics of zn sorption by ten calcareous soils of iran were measured and fitted to several equations (zero-, first-, second-, third-order, parabolic diffusion, simple elovich, and exponential equations). two initial concentrations of zinc i.e. 20 and 80 mg zn l-1 were used and observations were carried out for 100 hours. the time required to reach the near equilibrium state was about 24 ho...

This study analyzes soil sealing and its repercussions in the loss of fertile soils, which are more appropriate for agriculture use. Also, soil sealing increases flood risk. The main objective is to estimate soil loss by sealing in the Guadarrama River Basin (Madrid, Spain) between 1961 and 2011. The combination of digital processing (Normalized Difference Vegetation Index (NDVI), principal com...