Madhu Khanna

Non-mandatory Approaches to Environmental Protection

The approach to environmental protection has been evolving from a regulation-driven, adversarial government-push approach to a more proactive approach involving voluntary and often business-led initiatives to self-regulate their environmental performance. This has been accompanied by increasing provision of environmental information about firms and products to enlist market forces and communities in creating a demand for corporate environmental self-regulation by signaling their preferences for environmentally friendly firms. This paper provides an overview of the non-mandatory approaches being used for environmental protection and surveys the existing theoretical literature analyzing the economic efficiency of such approaches relative to mandatory approaches. It also discusses empirical findings on the factors motivating self-regulation by firms and its implications for their economic and environmental performance. It examines the existing evidence on the extent to which information disclosure is effective in generating pressures from investors and communities on firms to improve their environmental performance. Copyright 2001 by Blackwell Publishers Ltd

Corporate environmental management: Regulatory and market-based incentives

The corporate approach to environmental protection has been evolving from a regulation-driven reactive mode to a more proactive approach involving voluntarily adopted management systems that integrate environmental concerns with traditional managerial functions. Several hypotheses about the factors explaining the diversity in the environmental management systems adopted by firms are tested using survey data for a sample of S&P 500 firms. The analysis shows that the threat of environmental liabilities, high costs of compliance, market pressures, and public pressures on firms with high on-site toxic emissions per unit output create incentives for adopting a more comprehensive environmental management system. (JEL L5, Q2)

Sequential Adoption of Site-Specific Technologies and its Implications for Nitrogen Productivity: A Double Selectivity Model

This paper analyzes the sequential decision to adopt two site-specific technologies, soil testing and variable rate technology, and the impact of adoption on nitrogen productivity. The results indicate that while farm location was a key variable influencing adoption of soil testing, farm size, human capital, and innovativeness of farmers had a significant impact on adoption of variable rate technology in four Midwestern states. A double selectivity model applied to correct for sample selection bias shows that adoption leads to significant gains in nitrogen productivity for farms with below average soil quality but statistically insignificant gains for farms with above average soil quality. Copyright 2001, Oxford University Press.

Stochastic Technology, Risk Preferences, and Adoption of Site-Specific Technologies

This paper develops a model of farmer decision-making to examine the extent to which uncertainties about the performance of site-specific technologies (SSTs) and about the weather impact the value of these technologies. The model uses the jointly estimated risk and technology parameters to examine the impacts of SSTs on returns and nitrogen pollution. The availability of uncertain soil information and production uncertainty can lead risk-averse farmers to apply more fertilizers and generate more pollution. Ignoring the impact of uncertainty and risk preferences of farmers leads to a significant overestimation of the economic and environmental benefits of SSTs and underestimation of the required subsidy for inducing adoption of SSTs. The model that accounts for uncertainties about soil conditions and production as well as risk preferences of farmers provides an explanation for the low observed adoption rates of SSTs. Improvements in the accuracy of SSTs have the potential to increase the incentives for adoption.

Cost-Effective Targeting of Land Retirement to Improve Water Quality with Endogenous Sediment Deposition Coefficients

An integrated framework that combines spatial and biophysical attributes of land with a hydrological model and an economic model is developed to identify cropland for enrollment in the Conservation Reserve Enhancement Program. Sediment deposition coefficients are determined endogenously depending on the land-use decisions on other land parcels. Application of this framework to a watershed in Illinois demonstrates that highly sloping land adjacent to water bodies should be selected for retirement. A marginal value rental payment scheme can achieve program goals of 20% sediment abatement at 39% lower cost than a productivity-based rental scheme.

Integrating economic, environmental and GIS modeling to target cost effective land retirement in multiple watersheds

Abstract An integrated framework of economic, environmental and GIS modeling is developed to study cost-effective retirement of cropland within and across multiple watersheds to achieve environmental goals. This framework is applied to 12 contiguous agricultural watersheds in the Illinois Conservation Reserve Enhancement Program region of the United States. A key goal of this program is to reduce sediment loadings in the Illinois River by 20% by retiring land from crop production. The characteristics of land parcels to be targeted for retirement within each watershed and the criteria for cost-effective allocation of abatement responsibility across watersheds are analyzed. Our analysis suggests that program costs are minimized when the abatement standard is set for the region rather than uniformly for each watershed. For both policy scenarios, the land parcels targeted for retirement should be those that are highly sloping and adjacent to a water body.

Cost-effectiveness of alternative green payment policies for conservation technology adoption with heterogeneous land quality

This paper quantitatively analyses the cost-effectiveness of alternative green payment policies designed to achieve a targeted level of pollution control by heterogeneous micro units. These green payment policies include cost-share subsidies that share the fixed costs of adoption of a conservation technology and/or input reduction subsidies to reduce the use of a polluting input. The paper shows that unlike a pollution tax that achieves abatement through three mechanisms, a negative extensive margin effect, a negative intensive margin effect and a technology switching effect, a cost-share subsidy and an input reduction subsidy are much more restricted in the types of incentives they provide for conservation of polluting inputs and adoption of a conservation technology to control pollution. Moreover, they may lead to varying levels of expansion of land under production. Costs of abatement with alternative policies and implications for production and government payments are compared using a simulation model for controlling drainage from irrigated cotton production in California, with drip irrigation as a conservation technology.

What is Driving Corporate Environmentalism: Opportunity or Threat?

Abstract Environmental management systems (EMSs) can differ considerably in the mix of practices and the number of practices adopted by firms. This paper explores the various incentives motivating adoption of different types of practices by a sample of Standard & Poors 500 firms and provides an explanation for why firms adopt practices selectively. Observable firm characteristics, proxies for the incentives faced by firms, are used to determine the types of firms more likely to adopt certain types of practices. We find that practices, such as having an internal environmental policy, corporate environmental standards and environmental auditing are motivated more strongly by regulatory pressures, while practices such as total quality environmental management and environmental reporting are motivated more strongly by the potential for gaining competitive advantage and improving relations with stakeholders.

Striving to be green: the adoption of total quality environmental management

Many firms are undertaking environment-friendly organizational change by applying the philosophy of total quality management with its emphasis on reducing waste and increasing efficiency. Their objective is to improve their management of pollution and increase customer satisfaction. This article investigates the factors that lead to total quality environmental management (TQEM) by large firms. We find that internal considerations stemming from a firms technical capability, size (absolute and relative to competing firms), extent of operations and volume of past emissions are strongly associated with the TQEM adoption decision. The first four factors are proxies for the firms costs and capabilities of adopting TQEM while the fifth factor is related to the benefits from increasing efficiency and waste reduction, and thus proxies for internally generated demand for TQEM. The desire to improve a firms image with customers, earning good-will with regulators and the anticipation of future regulations do not appear to be associated with the adoption of TQEM. Thus, this articles main conclusion is that the adoption of TQEM is associated mostly with internal factors and motives.

Investment in site‐specific crop management under uncertainty: implications for nitrogen pollution control and environmental policy

This paper applies an option-pricing model to analyze the impact of uncertainty about output prices and expectations of declining fixed costs on the optimal timing of investment in site-specific crop management (SSCM). It also analyzes the extent to which the level of spatial variability in soil conditions can mitigate the value of waiting to invest in SSCM and influence the optimal timing of adoption and create a preference for custom hiring rather than owner purchase of equipment. Numerical simulations show that while the net present value (NPV) rule predicts that immediate adoption is profitable under most of the soil conditions considered here, recognition of the option value of investment indicates that it is preferable to delay investment in SSCM for at least 3 years unless average soil quality is high and the variability in soil quality and fertility is high. The use of the option value approach reveals that the value of waiting to invest in SSCM raises the cost-share subsidy rates required to induce immediate adoption above the levels indicated by the NPV rule.