Increasing costs for wastewater treatment provide incentives to
evaluate system alternatives, especially among small communities with limited
financial resources. Land treatment systems with hybrid poplar tree
plantations are becoming increasingly popular as one such alternative in the
Pacific Northwest.
Land treatment systems are made up of a complex dual system:...
Finite, uncertain, and increasingly expensive
energy resources require a better understanding of energy
utilization in all sectors of the national economy including agriculture. A significant portion of energy used
in agriculture is required for the manufacturing, installation, transporting, and operation of irrigation systems.
Quantification of the amounts of energy used...