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in order to study the residues of phosphorous insecticides in mazandaran district of iran, ethion, azinphosmethyl, diazinon and malathion four most used pesticides were chosen and river water samples were collected in april to sept. 2000, throughout the mazandaran state. thin layer chromatography was used, since it was the best applicable method in area with reasonably high level of sensitivity...

viAcknowledgments, vAppendices, 51AppendixTable of Minimum Weights, 52Bibliography, 56Dedication, iv

Lightweight concrete has a density lower than conventional concrete, which ranges between 1,400-1,800 Kg/cm3. The use of lightweight as more sustainable construction material continues to be developed reduce the weight building. Fly ash residue from coal combustion high SiO2 content cement substitute. Bottom with light can also used substitute for fine aggregate. Sorptivity test in aims determi...

A microplot experiment was conducted in soybean–wheat cropping system at New Delhi during 2010-11 and 2011-12 to study the effect of continuous or cyclic tillage, viz., conventional tillage (CT) and zero-tillage (ZT) and residue management of either soybean (SR) and/or wheat (WR) on yield performance and soil physico-chemical properties. The experiment was laid out in randomized block desi...

The use of natural aggregates with suitable characteristics for road construction presents in some regions a real problem availability or cost related to transport. However, the resources place, which are naturally unusable, can be used after treatment Hydraulic Road Binders (HRB). In this study, we propose valorize mineral Coal Bottom Ash (CBA), residue from combustion SONICHAR power station N...

This study setout to investigate the effect of wheat residue, tillage, and nitrogen fertilizer management on some agronomic traits of soybean as a split split plot based on randomized complete block design with three replications. The main plots included wheat residue management: collecting and leaving residue and sub plot included tillage (without tillage and conventional tillage), and the sub...

local information about tillage intensity and ground residue coverage is useful for policies in agricultural extension, tillage implement design and upgrading management methods. the current methods for assessing crop residue coverage and tillage intensity such as residue weighing methods, line-transect and photo comparison methods are tedious and time-consuming. the present study was devoted t...