abstract herbicides are the main sources of soil and water pollution in paddy fields. herbicides mobility to the surface and ground water is a major concern for human health and the environment. it is, therefore, necessary to investigate their fate and their interactions in natural ecosystems. to meet this purpose, field experiments were conducted to measure kinetic of thiobencarb dissipation i...

seed protein usually is not sensitive to environmental fluctuations; its banding pattern is very stable which advocated for cultivars identification purpose in crop. this study was planned to study effect of water deficit on protein content and protein banding pattern of wheat genotypes. in this study five wheat genotypes were planted in early november, growing season of 2008-2009. the experime...

arid and desert lands in terms of specific environmental characteristics such as low annual precipitation,sequential droughts, huge drop in ground water levels or the like, have always faced strict limitations in waterresources. in the shadow of these characteristics and many other factors, water price index (wpi) is significantlyaffected. this study set out with the aim of identifying and dete...

arid and desert lands in terms of specific environmental characteristics such as low annual precipitation,sequential droughts, huge drop in ground water levels or the like, have always faced strict limitations in waterresources. in the shadow of these characteristics and many other factors, water price index (wpi) is significantlyaffected. this study set out with the aim of identifying and dete...

Water, salinity and nitrogen are the major factors affecting maize production in arid and semi-arid areas. The objectives of this study were to investigate the effects of different water, salinity and nitrogen levels on yield-water relationships, water use, water productivity (WP), water use efficiency (WUE) and water uptake reduction function by maize hybrid SC-704 in a semi-arid area and ...

In theories of word meaning and concepts, “water” has been taken as a key case of a natural kind term, and water of a natural kind. I address several questions including: What should a theory of the meaning of the word “water” look like, given observations about use of the word? Is there a category of liquids that is water, independent of the names used for the liquids? Given the considerations...