In this study, spatial and temporal patterns of changes in extreme events of temperature and precipitation at 143 weather stations in ten Asia‐Pacific Network (APN) countries and their associations with changes in climate means are examined for the 1955–2007 period. Averaged over the APN region, annual frequency of cool nights (days) has decreased by 6.4 days/decade (3.3 days/decade), whereas the frequency of warm nights (days...

The groundwater in Pakistani sandy deserts is generally highly saline and not suitable for drinking. However, it can be utilized for growing beneficial salt‐tolerant plants. To explore the potential of desert land for farm production two crops of barley and mustard were cultivated on coarse‐ and fine‐textured soils with saline water irrigations in the Cholistan desert. The salinity (electrical conductivity, EC) of irrigation w...

This three‐year study was undertaken to investigate the groundwater and soil salinity variation in a canal‐irrigated area. Water and soil samples were collected along 54 tertiary canals located on six secondary canals (two each at head, middle and tail end) of a main canal. Data of crop yield and income of the farmers were also collected. The results show that electrical conductivity (EC) of groundwater increased from head to...