The total expected cost of sequestering carbon in agricultural soils is estimated under different government-based and market-based policies. A possible government-based EQIP programme offering a per-acre subsidy to adopt conservation tillage and a market-based carbon credit programme where...

This study develops a model based on the yield potential of various soil types in 12 Iowa counties to estimate the potential value of switching from uniform to variable fertilizer rates. Results indicate modest increases in the gross returns over fertilizer costs, ranging from $7.43 to $1.52 per...

Studies examining the value of switching to a variable rate technology (VRT) fertilizer program assume producers possess perfect soil nitrate information. In reality, producers estimate soil nitrate levels with soil sampling. The value of switching to a VRT program depends on the quality of the...

The total expected cost of sequestering carbon in agricultural soils is estimated under a possible EQIP program offering a per-acre subsidy to adopt conservation tillage and a carbon credit program where producers can sell their carbon credit in an external market. Both programs are compared to...

Beginning in the early 1980s, the government of Egypt embarked on an aggressive initiative to progressively change its centrally planned economy to a system more dependent on domestic and international markets. The agriculture and food sectors have taken the lead in the economic reforms. This...

Agricultural tillage practices are important human-induced activities that can alter carbon emissions from agricultural soils and have the potential to significantly contribute to reductions in greenhouse gas emission. This paper investigates the expected costs of sequestering carbon in...

Many of today's local rural roads and bridges were built in the late 1800s and early 1900s when farms were small, and farmers needed road access to homes, schools, churches and markets. During the 1920s and 1930s, these roads were surfaced mainly with gravel, and bridges were reinforced to carry...

There is a growing need for research that estimates the potential value to farmers of acquiring and using improved information about spatial variability within their fields. This paper considers the potential value of switching from single rate technologies (SRT) to variable rate technologies...

Develops a framework for incorporating estimation risk into a decision model to determine the optimal amount of soil test information when applying nitrogen fertilizer using a variable rate technology (VRT). Producers should acknowledge that the soil nitrate mapping is a collection of estimates...

Soil sampling has long been advocated as a means of improving the efficiency of fertility management decisions by better matching fertilizer applications with crop nutrient requirements and nutrient availability. Advances in mapping and sensing technologies have renewed interest in soil sampling...