ERS Charts of Note
Friday, September 30, 2016
In 2010, to help meet water quality goals, the U.S. Environmental Protection Agency (EPA) adopted a limit on the amount of pollutants that the Chesapeake Bay can receive. Nitrogen and phosphorus, in particular, can lead to adverse effects on public health, recreation, and ecosystems when present in excess amounts. The EPA estimates that applications of manure contribute 15 percent of nitrogen and 37 percent of phosphorus loadings to the Bay. Furthermore, ERS estimates that animal feeding operations (AFOs), which raise animals in confinement, account for 88 percent of manure nitrogen and 84 percent of manure phosphorus generation in that watershed. ERS also estimates that about a third of nitrogen and half of phosphorus produced at AFOs can be recovered for later use. That adds to about 234 million pounds of nitrogen and 106 million pounds of phosphorus recovered. These nutrients can then be redistributed regionally to fertilize agricultural land, thereby lessening nutrient run-off problems in the Bay. The remaining nutrients cannot be recovered. Both nitrogen and phosphorus may be lost during collection, storage, and transportation; nitrogen may also volatize into the atmosphere. This chart is based on the ERS report Comparing Participation in Nutrient Trading by Livestock Operations to Crop Producers in the Chesapeake Bay Watershed, released in September 2016.
Monday, August 15, 2016
Farms consume energy directly in the form of gasoline, diesel, electricity, and natural gas; and indirectly in energy-intensive inputs such as fertilizer and pesticides. Farm businesses—operations with annual gross cash farm income of over $350,000 or smaller operations where farming is reported as the operator’s primary occupation—vary in mix and intensity of direct and indirect energy use. In 2014, farm businesses concentrating on rice, peanut, wheat, and cotton production spent 43-49 percent of their total cash expenses on direct and indirect energy inputs, more than any other crop and livestock producers. Fertilizer and pesticides, which are indirect energy uses because they require large amounts of energy to manufacture, account for the greatest share of energy expenses among farm businesses primarily producing crops. For livestock producers, feed is also an important indirect energy expense but, in this analysis, these costs are accounted for in the crop budgets. Fertilizer expenses accounted for 18-22 percent of total cash expenses for farm businesses concentrating in wheat, corn, and other cash-grain production, and 14-17 percent for farm businesses primarily producing other field crops. Cotton and rice production were associated with relatively high shares of direct energy inputs: fuel is used to apply chemicals and electricity powers irrigation equipment. Peanut producers, which use electricity for irrigation and on-farm drying of harvested peanuts, had the highest share of electricity use at 6 percent, followed by farm businesses concentrating on poultry and cotton at 4 percent. This chart is found in the ERS report, Trends in U.S. Agriculture’s Consumption and Production of Energy: Renewable Power, Shale Energy, and Cellulosic Biomass, released on August 11, 2016.
Monday, May 2, 2016
For weed control, U.S. corn and soybean farmers rely on chemical herbicides which were applied to more than 95 percent of U.S. corn acres in 2010 and soybean acres in 2012. Over the course of the last two decades, U.S. corn and soybean farmers have increased their use of glyphosate (the active ingredient in herbicide products such as Roundup) and decreased their use of herbicide products containing other active ingredients. This shift contributed to the development of over 14 glyphosate-resistant weed species in U.S. crop production areas. Glyphosate resistance management practices (RMPs) include herbicide rotation, tillage, scouting for weeds, and other forms of weed control. In some cases, ERS found that usage rates for RMPs increased from 1996 to 2012. In other cases, RMP use dropped from 1996 to 2005/06 but increased as information about glyphosate-resistant weeds spread. For example, herbicides other than glyphosate were applied on 93 percent of planted soybean acres in 1996, 29 percent in 2006, and then 56 percent in 2012. This chart is found in the April 2016 Amber Waves finding, “U.S. Corn and Soybean Farmers Apply a Wide Variety of Glyphosate Resistance Management Practices.”
Friday, April 22, 2016
Efficient nitrogen fertilizer applications closely coincide with plant needs to reduce the likelihood that nutrients are lost to the environment before they can be taken up by the crop. Fall nitrogen application occurs during the fall months before the crop is planted, spring application occurs in the spring months (before planting for spring-planted crops), and after-planting application occurs while the crop is growing. The most appropriate timing of nitrogen applications depends on the nutrient needs of the crop being grown. In general, applying nitrogen in the fall for a spring-planted crop leaves nitrogen vulnerable to runoff over a long period of time. Applying nitrogen after the crop is already growing, when nitrogen needs are highest, generally minimizes vulnerability to runoff and leaching. Cotton farmers applied a majority of nitrogen—59 percent—after planting. Winter wheat producers applied 45 percent of nitrogen after planting. Corn farmers applied 22 percent of nitrogen after planting, while spring wheat farmers applied 5 percent after planting. Farmers applied a significant share of nitrogen in the fall for corn (20 percent) and spring wheat (21 percent). Fall nitrogen application is high for winter wheat because it is planted in the fall. This chart is found in the ERS report, Conservation-Practice Adoption Rates Vary Widely by Crop and Region, December 2015.
Tuesday, April 12, 2016
The ERS Major Land Uses (MLU) data series provides a snapshot of land use across the United States. While much of the MLU series is updated roughly every 5 years, cropland used for crops, the category representing the acres of land in active crop production, is updated on an annual basis. Cropland used for crops has three main components: cropland harvested (including acreage double-cropped), crop failure, and cultivated summer fallow. In 2015 (the most recent estimate), the total area of cropland used for crops in the United States was 335 million acres, down 6 million acres from the 2014 estimate and about 5 percent below the 30-year average. In 2015, cropland harvested declined by 1 percent (3 million acres) over the previous year. The area that was double-cropped—land from which two or more crops were harvested—declined by 1 million acres, a 13-percent decline from the 2014 double-cropped area of 8 million acres. Acres on which crops failed declined by 30 percent over the past year to 7 million acres, the lowest level since 2010. This chart is based on ERS’s Major Land Uses, summary table 3: Cropland used for crops, updated March 25, 2016.
Thursday, March 17, 2016
Livestock farmers use antibiotics to treat, control, and prevent disease, and also for production purposes, such as increasing growth and feed efficiency. A new U.S. Food and Drug Administration initiative seeks to eliminate the use of medically important antibiotics for production purposes. In the 2011 Agricultural Resource Management Survey (ARMS) on broilers (the most recent year available), producers were asked whether they raised their broilers without antibiotics in their feed or water unless the birds were sick, which implies not using antibiotics for growth promotion or disease prevention. In 2011, growers reported that about half of birds (48 percent) were only given antibiotics for disease treatment. This response also accounts for 48 percent of operations and 48 percent of production (by live weight). Approximately a third (32 percent) of operators stated that they did not know if they provided antibiotics via feed or water for purposes other than disease treatment; this means the proportion of reporting operations that only supplied antibiotics for disease-treatment purposes could be as high as 80 percent. Contracted growers (accounting for 96 percent of broiler production) may not know if antibiotics are in the feed provided by the company for whom they raise broilers. These statistics suggest that in 2011, between 20 and 52 percent of birds were given antibiotics for reasons other than disease treatment. This chart is found in the Amber Waves feature, “Restrictions on Antibiotic Use for Production Purposes in U.S. Livestock Industries Likely To Have Small Effects on Prices and Quantities,” November 2015.
Tuesday, March 1, 2016
Cover crops are thought to play a role in improving soil health by keeping the soil “covered” when an economic crop is not growing. Cover crops reduce soil erosion, trap nitrogen and other nutrients, increase biomass, reduce weeds, loosen soil to reduce compaction, and improve water infiltration to store more rainfall. The 2010-11 Agricultural Resource Management Survey was the first USDA survey to ask respondents to report cover crop use (findings from the 2012 Agricultural Census—the most recent available—are similar). Approximately 4 percent of farmers adopted cover crops on some portion of their fields, accounting for 1.7 percent of total U.S. cropland (6.8 million acres) in 2010-11. Cover crop adoption was highest in the Southern Seaboard (5.7 percent) and lowest in the Heartland and Basin and Range (0.6 percent each). This distribution is likely due to the fact that cover crops are easiest to establish in warmer areas with longer growing seasons. Limited cover crop use overall, however, suggests that the benefits of cover crop adoption are being realized on few acres. This chart is from the ERS report, Conservation-Practice Adoption Rates Vary Widely by Crop and Region, December 2015.
Wednesday, February 17, 2016
ERS research projects that climate change will result in a decline in national fieldcrop acreage over analysis years 2020, 2040, 2060, and 2080, when measured relative to a scenario that assumes continuation of reference climate conditions (precipitation and temperature patterns averaged over 2001-08). Acreage trends are explored for nine climate change scenarios, and substantial variability exists across climate change scenarios and crop sectors. When averaged over all climate scenarios, U.S. acreage in rice, hay, and cotton is projected to expand, while acreage in corn, soybeans, sorghum, wheat, and silage declines. Acreage response varies across crops as a function of the sensitivity of crop yields to changes in precipitation, temperature, and atmospheric carbon dioxide; the resulting changes in relative crop profitability; the coincidence of climatic shifts with geographic patterns of crop production; and variables related to the extent of crop reliance on irrigation. This chart is from the ERS report Climate Change, Water Scarcity, and Adaptation in the U.S. Fieldcrop Sector, November 2015.
Tuesday, February 2, 2016
Livestock farmers use antibiotics to treat, control, and prevent disease, and also for production purposes, such as increasing growth and feed efficiency. A new U.S. Food and Drug Administration initiative seeks to eliminate the use of medically important antibiotics for production purposes. ERS research shows that only a portion of hog and broiler producers use antibiotics for production purposes, and the productivity increases from such uses are 1-3 percent. Modelling the effect of production-specific antibiotic restrictions suggests that such a policy would have a modest effect on wholesale prices and quantities produced of chicken and pork—less than a 1-percent increase in wholesale prices and a net decline in production of less than 0.5 percent. Because prices increase more than quantities decrease, gross revenues (price times quantity) would increase slightly. This chart is based on the table found in the Amber Waves feature, “Restrictions on Antibiotic Use for Production Purposes in U.S. Livestock Industries Likely To Have Small Effects on Prices and Quantities,” November 2015.
Monday, February 1, 2016
No-till and strip-till are two of many tillage methods farmers use to plant crops. In a no-till system, farmers plant directly into the undisturbed residue of the previous crop without tillage, except for nutrient injection; in a strip-till system, only a narrow strip is tilled where row crops are planted. These tillage practices contribute to improving soil health, and reduce net greenhouse gas emissions. During 2010-11, about 23 percent of land in corn, cotton, soybeans, and wheat was on a farm where no-till/strip-till was used on every acre (full adopters). Another 33 percent of acreage in these crops was located on farms where a mix of no-till, strip-till, and other tillage practices were used on only some acres (partial adopters). In the Prairie Gateway, Northern Great Plains, and Heartland regions—which account for 72 percent of corn, soybean, wheat, and cotton acreage—more than half of these crop acres were on farms that used no-till/strip-till to some extent. Partial adopters have the equipment and expertise, at least for some crops, to use no-till/strip-till; these farmers may be well positioned to expand these practices to a larger share of cropland acreage. This chart is from the ERS report, Conservation-Practice Adoption Rates Vary Widely by Crop and Region, December 2015.
Tuesday, January 19, 2016
No-till and strip-till are two of several tillage methods farmers use to plant crops. These practices disturb the soil less than other methods, reducing soil erosion, helping maintain soil carbon, and can contribute to improved soil health. In a no-till system, farmers plant directly into the undisturbed residue of the previous crop without tillage, except for nutrient injection; in a strip-till system, only a narrow strip is tilled where row-crops are planted. Overall, 39 percent of the combined corn, soybean, wheat, and cotton acres (the four most widely grown crops in the U.S.) were in no-till/strip-till in 2010-11 (89 million acres per year), with adoption rates higher for some crops. Farmers may be more likely to use no-till/strip-till on crops that are thought to be well suited for the practices (e.g., soybeans) and more likely to use conventional tillage or other conservation tillage methods for crops where no-till/strip-till management is perceived as more risky (e.g., corn). Some farmers may also vary tillage based on field characteristics or weather. Tillage practices are often part of conservation plans that must be in use on highly erodible land to meet eligibility requirements (conservation compliance) for most Federal agricultural programs, including commodity programs and (after 2014) crop-insurance premium subsidies. This chart is from the ERS report, Conservation-Practice Adoption Rates Vary Widely by Crop and Region, December 2015.
Monday, November 30, 2015
Hog producers use Hog producers use antibiotic drugs to treat/control animal diseases, but they also feed them to their hogs to prevent disease and to promote faster growth through improved absorption of feed. There is growing concern that widespread use of antibiotics in humans and animals may encourage microbial resistance and make the drugs less effective for maintaining their health, and the U.S. Food and Drug Administration (FDA) is moving to end the growth-promotion uses of medically important antibiotics in animal agriculture. Antibiotic use varies across the hog sector, according to a USDA survey of hog producers, and the FDA’s action will affect some but not all producers. Over half of pigs in the nursery stage do not receive antibiotics for growth promotion, and that figure could be as high as 75 percent, because 26 percent of hogs were raised by growers that stated they did not know if antibiotics are in the feed. Some contract growers don’t know if antibiotics are in the feed provided by the company for whom they raise hogs. Antibiotics are more likely to be used for growth promotion in finishing hogs (those being fed to market weight), but even here at least 40 percent of hogs did not receive the drugs for growth promotion. This chart is found in the ERS report, Economics of Antibiotic Use in U.S. Livestock Production, ERR-200, November 24, 2015. antibiotic drugs to treat/control animal diseases, but they also feed them to their hogs to prevent disease and to promote faster growth through improved absorption of feed. There is growing concern that widespread use of antibiotics in humans and animals may encourage microbial resistance and make the drugs less effective for maintaining their health, and the U.S. Food and Drug Administration (FDA) is moving to end the growth-promotion uses of medically important antibiotics in animal agriculture. Antibiotic use varies across the hog sector, according to a USDA survey of hog producers, and the FDA?s action will affect some but not all producers. Over half of pigs in the nursery stage do not receive antibiotics for growth promotion, and that figure could be as high as 75 percent, because 26 percent of hogs were raised by growers that stated they did not know if antibiotics are in the feed. Some contract growers don?t know if antibiotics are in the feed provided by the company for whom they raise hogs. Antibiotics are more likely to be used for growth promotion in finishing hogs (those being fed to market weight), but even here at least 40 percent of hogs did not receive the drugs for growth promotion. This chart is found in the ERS report, Economics of Antibiotic Use in U.S. Livestock Production, ERR-200, November 24, 2015.
Friday, November 27, 2015
Climate models predict U.S. agriculture will face significant changes in local patterns of precipitation and temperature over the next century. These climate changes will affect crop yields, crop-water demand, water-supply availability, farmer livelihoods, and consumer welfare. Irrigation is an important strategy for adapting to shifting production conditions under climate change. Using projections of temperature and precipitation under nine climate change scenarios for 2020, 2040, 2060, and 2080, ERS analysis finds that on average, irrigated fieldcrop acreage would decline relative to a reference scenario that assumes continuation of climate conditions (precipitation and temperature patterns averaged over 2001-08). Before midcentury, the decline in irrigated acreage is largely driven by regional constraints on surface-water availability for irrigation. Beyond midcentury, the decline reflects a combination of increasing surface-water shortages and declining relative profitability of irrigated production. This chart is from the ERS report, Climate Change, Water Scarcity, and Adaptation in the U.S. Fieldcrop Sector, ERR-201, November 2015.
Friday, October 16, 2015
The average annual rate of global agricultural output growth slowed in the 1970s and 1980s, then accelerated in the 1990s and 2000s. In the latest period estimated (2001-12), global output of total crop and livestock commodities was expanding at an average rate of 2.5 percent per year. In the decades prior to 1990, most output growth came about from intensification of input use (i.e., using more labor, capital, and material inputs per acre of agricultural land). Bringing new land into agriculture production and extending irrigation to existing agricultural land were also important sources of growth. This changed over the last two decades, as input growth slowed. In 2001-12, improvements in productivity—getting more output from existing resources—accounted for about two-thirds of the total growth in agricultural output worldwide, reflecting the use of new technology and changes in management practices by agricultural producers around the world. This chart is based on the ERS data product, International Agricultural Productivity, updated October 2015.
Thursday, September 3, 2015
The ERS Major Land Uses (MLU) series estimates land in various uses, including the acres devoted to crop production in a given year. These acres, collectively referred to as “cropland used for crops,” include acres of cropland harvested, acres on which crops failed, and cultivated summer fallow. In 2014 (the most recent estimate), the total area of cropland used for crops was 340 million acres, up 4 million acres from the 2013 estimate but in line with the 30-year average. In 2014, cropland harvested increased by 2 percent (6 million acres) over the previous year. The 317 million acres of cropland harvested represents the highest harvested acreage since 1997, when cropland harvested was 321 million acres. The area double cropped—land from which two or more crops were harvested—declined by 1 million acres, a 10 percent decline from the 2013 double-cropped area of 10 million acres. Acres on which crops failed declined by 25 percent over the past year to 9 million acres, the lowest level since 2010. Cultivated summer fallow, which primarily occurs as part of wheat rotations in the semiarid West, has remained relatively stable over the last 10 years, although its use has been declining since the late 1960s. Larger historical fluctuations seen in cropland used for crops are largely attributable to Federal cropland acreage reduction programs. This chart is based on ERS’s Major Land Uses, Summary table 3: Cropland used for crops, updated August 31, 2015 to include 2014 estimates.
Thursday, July 30, 2015
Glyphosate, also known by the trade name Roundup, is the most widely used herbicide in the United States. Widespread and exclusive use of glyphosate, without other weed control strategies, can induce resistance to the herbicide by controlling susceptible weeds while allowing more resistant weeds to survive, propagate, and spread. Resistant weed seeds can disperse across fields—carried by animals, equipment, people, wind, and water. Consequently, controlling weed resistance depends on the joint actions of farmers and their neighbors. ERS analyses evaluated the long-term financial returns to growers who adopt weed control practices that aim to slow resistance to glyphosate, and compared those returns when neighboring farmers also manage to slow resistance. Projected net returns (annualized over 20 years) for growers who manage resistance generally exceed returns for growers who ignore resistance; they are even higher when neighbors also manage resistance. Projected net returns for growers with neighbors who also manage resistance range 18-20 percent higher than those of growers/neighbors who ignore resistance. This chart visualizes data found in the Amber Waves feature, “Managing Glyphosate Resistance May Sustain Its Efficacy and Increase Long-Term Returns to Corn and Soybean Production,” May 2015.
Tuesday, July 28, 2015
U.S. crop acres under USDA certified organic systems have grown since the National Organic Program was implemented in 2002. Organic crop acres increased from about 1.3 million in 2002 to almost 3.1 million in 2011, and part of this growth was in major field crops: corn, soybeans, and wheat. Among these 3 crops, certified organic production of corn increased the most, from about 96,000 acres in 2002 to 234,000 acres in 2011. Certified organic soybean acreage peaked at 175,000 acres in 2001, before falling to 100,000 acres in 2007 and rebounding to 132,000 acres in 2011. Wheat has the largest number of organic acres, starting at 225,000 acres in 2002 and peaking at more than 400,000 acres in 2008, before falling to 345,000 acres in 2011. Much of the increased organic corn production has been to support a rapidly growing organic dairy sector. Higher prices for conventional corn, soybeans, and wheat since 2008 and somewhat slower demand growth for organic products due to the economic recession, along with increasing imports of these crops, may have limited the growth in organic field crop acreage in recent years. This chart is from the ERS report, The Profit Potential of Certified Organic Field Crop Production, July 2015
Wednesday, July 8, 2015
Above a temperature threshold, an animal may experience heat stress resulting in changes in its respiration, blood chemistry, hormones, metabolism, and feed intake. Dairy cattle are particularly sensitive to heat stress; high temperatures lower milk output and reduce the percentages of fat, solids, lactose, and protein in milk. In the United States, dairy production is largely concentrated in climates that expose animals to less heat stress. The Temperature Humidity Index (THI) load provides a measure of the amount of heat stress an animal is under. The annual THI load is similar to “cooling degree days,” a concept often used to convey the amount of energy needed to cool a building in the summer. The map shows concentrations of dairy cows in regions with relatively low levels of heat stress: California’s Central Valley, Idaho, Wisconsin, New York, and Pennsylvania. Relatively few dairies are located in the very warm Gulf Coast region (which includes southern Texas, Louisiana, Mississippi, Alabama, and Florida). This map is drawn from Climate Change, Heat Stress, and Dairy Production, ERR-175, September 2014.
Monday, May 18, 2015
Precision agriculture is a set of practices used to manage fields by assessing variations in nutrient needs, soil qualities, and pest pressures. In 2013-14, USDA conducted the latest Agricultural Resource Management Survey (ARMS) of U.S. peanut growers, interviewing farmers about production practices, resource use, and finances. Some technologies have been rapidly adopted; in particular, 42 percent of peanut farms used auto-steer or guidance systems in 2013, up from 5 percent in 2006. These systems can reduce stress for operators and limit the over-application of inputs on field edges. Yield monitors and yield maps, with essentially no usage in 2006, were used on 8 and 6 percent of farms, respectively, in 2013. With these technologies, monitors can identify within-field yield variations so farmers can adjust inputs and practices accordingly. The use of variable rate application, which has increased from 3 to 22 percent of farms, allows for the adjustment of fertilizer application over a field so that fertilizer can be applied where and when it is needed, thus reducing costs and being more environmentally friendly. This chart is found in the joint ERS/National Agricultural Statistics Service (NASS) report, 2013 ARMS—Peanut Industry Highlights, based on ARMS Farm Financial and Crop Production Practices data.
Wednesday, March 25, 2015
Precision agriculture refers to a set of practices used to manage fields by measuring variations in nutrient needs, soil qualities, and pest pressures. In 2013, USDA conducted the latest Agricultural Resource Management Survey (ARMS) of the U.S. rice industry, interviewing farmers about production practices, resource use, and finances in the 10 largest rice-producing States. Some technologies have been rapidly adopted; in particular, yield monitoring increased in use to 60 percent of farms between 2006 and 2013. Monitors can identify variations in yields within a field, allowing farmers to adjust inputs and practices accordingly. Auto-steer or guidance systems are now used on over half of all rice farms; these reduce stress on operators, and reduce errors in input application overlaps and seeding cut-off at the end rows. The cost savings from using these two technologies can also be accompanied by increases in yields. This chart is found in the joint ERS/National Agricultural Statistics Service (NASS) report, 2013 ARMS—Rice Industry Highlights, based on ARMS Farm Financial and Crop Production Practices data.