Surface Hardness as an Indicator of Soil Strength of Agricultural Soils

nano-rods zno as an efficient catalyst for the synthesis of chromene phosphonates, direct amidation and formylation of amines

چکیده ندارد.

Bioassay of Chlorsulfuron Residue in Soil by Using Cress (Lepidium sativum L.) Plant as an Indicator

M.Sc Student, Pardis Faculty of Agriculture and Animal Science, Tehran University, Iran 2- Ph.D Student, Pardis Faculty of Agriculture and Animal Science, Tehran University, Iran Received:11 Nov. 2007 Accepted: 7 Feb. 2008 ABSTRACT Chlorsulfuron is a herbicide which shows carry over effects. Their residues may damage subsequent crops presented in rotational program. Bioassay is considered a goo...

Estimation of soil surface roughness of agricultural soils using airborne LiDAR

Heavy Metal Soil Content as an Indicator of Pollution

Two soil sample series were collected from 7 contaminated sites situated along a transect from the pollutant source, Zlatna copper ore-processing plant, and analyzed using different analytical methods. The soils collected in 1998 were analyzed by inductively coupled plasma-atomic emission spectrometry (ICP-AES) after extraction with DTPA for trace metals and those collected in 1999 were analyze...

Soil Moisture as an Indicator of Weather Extremes

[1] In this paper, we investigate floods and droughts in the Upper Mississippi basin over a 50-year period (1950–1999) using a hydrological model (Variable Infiltration Capacity Model – 3 Layer). Simulations have been carried out between January 1950 and December 1999 at daily timestep and 1/8 spatial resolution for the water budget and at hourly time-step and 1 spatial resolution for the energ...