Canals are major water conveyance systems used to deliver water to irrigation fields. Due to wide variability of local soil conditions, the stability of designed channel section may not be ensured while implementing the optimal canal sections in the real field. Hence, incorporation of slope stability condition is very helpful to provide stable irrigation channels. This paper presents Particle S...

Soil organic carbon plays a major role in the global carbon budget, and can act as a source or a sink of atmospheric carbon, thereby possibly influencing the course of climate change. Changes in soil organic carbon (SOC) stocks are now taken into account in international negotiations regarding climate change. Consequently, developing sampling schemes and models for estimating the spatial distri...

In the recent years, agricultural soils have received more chemicals in various forms for higher yields. This may result in the accumulation of metals in soils which subsequently may be transferred into the agricultural crops. In the present investigation, nickel content of 58 composite soil samples and also agricultural crops, is studied. Ni in samples of soil and agricultural products were ex...

Soil components (e.g., clays, bacteria and humic substances) are known to produce mineral-organic composites in natural systems. Herein, batch sorption isotherms, isothermal titration calorimetry (ITC), and Cd K-edge EXAFS spectroscopy were applied to investigate the binding characteristics of Cd on montmorillonite(Mont)-humic acid(HA)-bacteria composites. Additive sorption and non-additive Cd(...

in the recent years, agricultural soils have received more chemicals in various forms for higher yields. this may result in the accumulation of metals in soils which subsequently may be transferred into the agricultural crops. in the present investigation, nickel content of 58 composite soil samples and also agricultural crops, is studied. ni in samples of soil and agricultural products were ex...

ing. The band control received a coulterknife pass without fertilizer. Soybean response to direct P application was evaluated in seven trials (Sites 1 through 7). The treatments were applied in the fall (October or November) after harvesting the previous corn crop and before soils had frozen. At the remaining seven trials (Sites 8 through 14), P was applied 1 year earlier (in the fall prior to ...

the geometric mean particle diameter (dg) and lime are two of the most important properties from the viewpoint of soil management. nowadays remote sensing technology which has emerged walking with science development throughout the world, has made soil study faster, more facile and more cost-efficient. an investigation of soil dg and lime was performed in pol-e-dokhtar area by use of four sets ...

—Presettlement Florida had a variety of open habitats, including grasslands and savannas. This study examined the historic distribution of the Florida grasslands using U.S. General Land Office land surveys made during the 19th century. All survey maps with areas labeled ‘‘prairie’’ or ‘‘savanna’’ were compiled into a composite map. A total of 791,140 ha of prairies and 15,820 ha of savanna were...