Subterranean Reverberations and the Horror of the Chemical Sublime

Massive groundwater pumping for irrigation has started lowering water tables rapidly in different regions of Pakistan. Declining water tables have thus prompted research efforts to improve agricultural productivity and efficiency to make efficient use of scarce water resources. This study employs a restricted stochastic production frontier to estimate the level of, and factors affecting, technical efficiency of groundwater-irrigated cotton farms in the Punjab province of Pakistan. The mean technical efficiency estimates indicate substantial technical inefficiencies among cotton growers. On average, tube-well owners and water buyers can potentially increase cotton production by 19% and 28%, respectively, without increasing the existing input level. The most influential factors affecting technical efficiency positively are the use of improved quality seed, consultation with extension field staff and farmers' perceptions concerning the availability of groundwater resources for irrigation in the future. This study proposes that adopting improved seed for new cotton varieties and providing better extension services regarding cotton production technology would help to achieve higher efficiency in cotton farming. Within the context of falling water tables, educating farmers about the actual crop water requirements and guiding them about groundwater resource availability may also help to achieve higher efficiencies. © 2014 Society of Chemical Industry.

Groundwater is the primary source of drinking water for half of the world’s population and is critical for global food security. Simultaneously, groundwater provides enormous environmental benefits by sustaining rivers, lakes, and wetlands, especially during droughts. A growing global population, widespread use of industrial chemicals, and climate change now threaten this vital resource. Groundwater depletion and contamination has spread from isolated areas to many countries throughout the world. Groundwater is shared among many users and effective groundwater governance is hard to achieve. Solutions require active community engagement and collaboration of diverse stakeholders. External pressure is usually also required to achieve necessary changes and accountability. Groundwater depletion and contamination are prime examples of how many of the world’s most pressing environmental problems require cooperation and collective action. Drawing on examples from around the world, this book examines groundwater from key scientific and socioeconomic perspectives. Major themes woven throughout the book are: (1) the importance of integrating groundwater into overall water and land management, (2) how to achieve sustainable long-term yields from aquifers, (3) protection of groundwater quality, (4) groundwater and surface water as a single resource, (5) preservation of groundwater-dependent ecosystems, (6) measures to address the delayed effects of groundwater pumping, and (7) the role of groundwater in the face of climate change. While addressing the serious nature of groundwater problems, the book includes stories of people who are making a difference in protecting this critical resource.