Procedures are presented for casting 50-ft3/sec trapezoidal water measurement flumes in 2-foot bottom width lined and unlined ditches. Drawings and construction details for the concrete forms used are also presented. Flumes installed in concrete-lined ditches require about 13 man-hours and cost...

Water shortages in important grain-producing regions of China may significantly affect China's agricultural production potential and international markets. Falling ground-water tables and disruption of surface-water deliveries to important industrial and agricultural regions have provoked...

China's impact on world agricultural markets in coming decades will depend on many factors. Growing income and transition to modern urban lifestyles will increase demand for all foods, but demand will shift toward meat and high-value products. WTO accession may increase openness of China's...

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