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Science: All

May 26, 2017
Understanding the cycle of nitrogen and carbon in water ecosystems is critical to estimating human impacts on these cycles. Although water ecosystems are capable of recycling nitrogen and carbon, the ...
May 19, 2017
Restoring drained peatlands is considered a climate change mitigation action. However, mitigating effects of wetlands restored for agricultural production largely depends on management intensity....
May 19, 2017
Continuous cropping systems without rotations or cover crops are perceived as unsustainable for long-term yield and soil health. Continuous systems, defined as continually producing a crop on the same...
May 19, 2017
Stored livestock manure is a source of ammonia (NH) and the greenhouse gases methane (CH) and nitrous oxide (NO). One way to reduce these emissions may be to acidify the manure slurry. In an article r...
May 19, 2017
Biological N fixation (BNF) alone in soybean [ (L.) Merrill] crops is efficient as a N source to the soybean crop at yield levels up to 3,800 kg ha. However, for yields above 4,000 kg ha, the N cannot...
May 19, 2017
Increases in climate variability have placed new emphasis on the need for resilient wheat varieties. Alongside demands for increased resiliency, consumer interest in healthier, more functional foods i...
May 19, 2017
The transition point between capillary water and adsorbed water is defined as the critical point (including the critical matric potential and the critical water content) of the soil water retention cu...
May 19, 2017
Turfgrass tissue analysis can play an important role in developing nutrient management plans. Current interpretations are similar to those utilized in agronomic crops where maximizing yield is of prim...
May 19, 2017
The idea of exploring space, including extendedhuman missions and the potential for future baseson the Moon, Mars, or elsewhere, is not just science fiction. With the recent release of the book and mo...
May 19, 2017
Each month, we highlight a photo that demonstrates great techniques to illustrate research. This month, we thank Chris Barry for this photo of field discharge. This photo includes: illustration of the...
May 19, 2017
Vernal pools are shallow ponds during the rainy season that are completely dry in the summer. They are noted for their unique flora and fauna. Soils are critical to the hydrologic function of the vern...
May 19, 2017
Networked research sites are increasingly used to study regional land management impacts on carbon and water fluxes. However, key national networks lack contributions from the Lower Mississippi River ...
May 19, 2017
Because organic crop producers generally do not utilize herbicides, they have historically had limited access to conservation tillage practices that help retain soil organic carbon. Although no-till i...
May 19, 2017
Bioactive compounds in pepper are associated with several health benefits. While consumers are looking for foods more nutritionally and functionally rich, growers want high-yielding cultivars with imp...
May 19, 2017
Soybean cyst nematode (SCN) causes extensive soybean yield loss, and host resistance has been an effective strategy to minimize this loss. However, the widespread use of the PI 88788 source of SCN res...
May 19, 2017
Soil mapping identifies different soil types by compressing a unique suite of spatial patterns and processes across multiple spatial scales. It can be quite difficult to quantify spatial patterns of s...
May 19, 2017
Road salt application for deicing has increased in the United States since the 1940s, and many studies have shown its environmental impact in surface water and shallow groundwater. However, despite th...
May 19, 2017
USDA-ARS coordinates the region-wide testing of advanced experimental breeding lines of wheat and other crop plants. Through these cooperative programs, data on agronomic performance and adaptation, d...
May 19, 2017
Sediment is the number one pollutant in U.S. waterways. Overgrazing can increase soil erosion from pastures as well as sediment loading into aquatic systems. Grazing management and buffer strips may r...
May 19, 2017
Laboratory accuracy and precision are essential for scientific research in order to obtain reliable and repeatable results on which scientific and other decisions are based. Accuracy refers to the clo...
May 19, 2017
Understanding the fate of nitrogen applied to soil is vitally important if we are to improve its agronomic use efficiency and reduce its negative effects on the environment. Very few studies have succ...
May 19, 2017
Ecological research suggests greater species diversity can offer more ecosystem services in a variety of ecosystems. But how can this idea be applied in agroecosystems, which have very low diversity?...
May 18, 2017
Undergraduate students who plan to pursue careers in agriculture take courses focused on crop production, animal science, and agricultural economics. However, when these students become practicing pro...
April 7, 2017
Specialty crops like wine grapes thrive across a heterogeneous array of soils in California’s Mediterranean climate. In vineyards, alleys and vine rows are managed separately: alleys support cover c...
April 7, 2017
Passive biological treatment systems, which include treatment wetlands, are an increasingly utilized, low-maintenance option to treat mine waters and reduce their widespread impacts on aquatic ecosyst...
April 7, 2017
Many crops may rely upon wild germplasm and related species to provide novel genes for improving disease resistance. Such genes are transferred from the exotic sources into commercial lines using back...
April 7, 2017
Climate change has caused vegetation shifts in subarctic wetlands due to rising temperatures, precipitation, and soil thaw. The resulting changes in soil chemistry from past to present vegetation are ...
April 7, 2017
The Fifth European Turfgrass Society (ETS) Conference was held in Portugal last June. Professor Carlos Guerrero from the University of Algarve organized this international conference with support from...
April 7, 2017
Proper manure management is required to enhance production while minimizing nutrient losses to the environment. Producers in the region with intense broiler production take advantage of the plant nutr...
April 7, 2017
In November of 2014, an unassuming story appeared in the pages of magazine. Little more than a blurb, the modest article promised big things. According to three short paragraphs on a single, glossy p...
April 7, 2017
Ammonia volatilization from surface-applied urea is the nitrogen loss pathway of primary concern in direct-seeded, delayed-flood rice ( L.). Rainfall following urea application but before floodwater c...
April 7, 2017
Carbon dioxide (CO) emissions are usually the first thing to come to mind when talking about greenhouse gases, but there is a suite of greenhouse gases of concern. One of these is nitrous oxide (NO). ...
April 7, 2017
The (JEQ) invites authors to submit abstracts of papers for an upcoming special section on “Soil Chemistry and the One Health Initiative” . These submissions should include a list of contributing...
April 7, 2017
Wheat productivity can be increased by increasing kernel size, which is related to ovary size. It is not known whether environmental factors that affect kernel size may also affect ovary size, thus ma...
April 7, 2017
Supplementation with preserved forages and other feedstuffs is the number one input cost in beef cattle operations. Extending the grazing season into the fall and early winter with annual forages is a...
April 7, 2017
Application of livestock manure to farm soils represents a priority nutrient management concern in the Chesapeake Bay watershed. Historically, strong emphasis has been placed on adding manure storage ...
April 7, 2017
Preferential flow is broadly defined as the channeling of water and solutes through a small fraction of the pore space in the vadose zone. Among other consequences, preferential flow has significant i...
April 7, 2017
Each month, we highlight a photo that demonstrates great techniques to illustrate research. This month, we thank Aaron Klaustermeier for this photo of a brine spill, illustrating Aaron Daigh’s resea...
March 10, 2017
Infiltration is the main process to replenish soil moisture, recharge aquifers, and reduce groundwater depletion, and it supports streamflows during dry periods. However, most mathematical and physica...
March 10, 2017
Farmers around the world are considering dry direct seeding of rice, which not only reduces labor and time involved in land preparation, but also sustains rice production in rainfed conditions. Rice p...
March 10, 2017
Spelt ( ssp. ) is an old hulled wheat currently receiving renewed interest among consumers, bakers, millers, and farmers. Research is necessary to facilitate a production chain with a satisfactory rew...
March 10, 2017
Soil erosion is a worldwide problem causing severe land degradation and surface water quality deterioration. To effectively control soil erosion, distributed soil erosion models such as the Water Eros...
March 10, 2017
Each month, we highlight a photo that demonstrates great techniques to illustrate research. This month, we thank Silja Hund for this photo of hydrologic monitoring. This photo shows equipment on site....
March 10, 2017
Corn ( L.) residue provides a simple and economical practice to integrate crops and livestock. Corn residue is used for grazing, livestock bedding, supplemental livestock feed, and as a feedstock for ...
March 10, 2017
Fertilizers applied to farm fields, golf courses, and residential landscaping to benefit plants do not always stay in place. These added nutrients, including nitrogen (N) and phosphorus (P), can be wa...
March 10, 2017
Climate change is expected to alter regional temperature and precipitation patterns and will subsequently impact soils and the distribution of plants and animals. Understanding how soils might vary wi...
March 10, 2017
Farmers use “green manure” to protect soil, fix nitrogen, and scavenge nutrients when cash crops are not present. These cover crops can also reduce weeds and act as a mulch for cash crops in no-ti...
March 10, 2017
Historically, field trials have served as the predominant method to assess yield impacts of farm management practices. However, as the amount of data produced by farm operations has increased over the...
March 10, 2017
SSSA member David C. Weindorf (Texas Tech University) and film director Paul Allen Hunton (KTTZ-TV) tackled the difficult subject of climate change in their documentary, . The film is already garnerin...
March 10, 2017
Four million metric tons of phosphate fertilizer are applied annually to U.S. agricultural soils, but less than 40% is taken up by most crops. AVAIL copolymer is a fertilizer additive developed to enh...
March 10, 2017
Characterization of the vulnerability of water bodies to pollution from natural and anthropogenic sources requires understanding the relationship between land use and water quality. While this relatio...
March 10, 2017
Most of the microbial quality regulations and assessments for fresh waters use as an indicator of fecal contamination that may be harmful to human health. Stream and lake bottom sediments contain lar...
March 10, 2017
High-biomass sorghum could potentially produce high yields in the U.S. Midwest with minimal fertilizer inputs. However, little is known about its yield response, N uptake, nitrogen use efficiency (NUE...
February 13, 2017
Organic agriculture poses other demands on crop characteristics than conventional high-input conditions. The question is whether crop cultivars adapted to low-input organic management can be selected ...
February 13, 2017
Farmers and ranchers send soil and crop samples to commercial laboratories for chemical tests that measure nutrient concentrations as well as protein, fiber, and carbohydrates that influence the nutri...
February 13, 2017
Both seed number and seed weight are important to grain yield of sorghum, but seed number is often considered the most important yield component. Because sorghum is often grown under water-limiting co...
February 13, 2017
Reliable prediction of soil hydraulic characteristics is often required to assess soil and ground water contamination risk or soil remediation activities. Soil permeability to water either in saturate...
February 13, 2017
Proximal crop sensing has been used for predicting crop yield, the first step in development of algorithms for sensor-based N management. Most studies were conducted with grain crops, but a recently p...
February 13, 2017
The December 2016 issue of contains a review of soil and landscape evolution—the bio-hydrological processes during the initial development phases of geosystems or developments following an ecosyste...
February 13, 2017
The rising plate meter has been used for several decades to estimate forage yields in pastures containing only one or two forage species. However, pastures with multiple forage species have challenged...
February 13, 2017
Biogeochemical soil processes and fluxes are governed by physical, chemical, and biological properties, which can highly vary in space and time. Current knowledge on biogeochemical processes and fluxe...
February 13, 2017
Changing climate conditions will impact urban and rural communities worldwide. Agriculture may be particularly sensitive to rapid changes in climate and extreme weather events. Climate-smart agricultu...
February 13, 2017
Each month, we highlight a photo that demonstrates great techniques to illustrate research. This month, we thank Stephen Guy for this photo of winter-hardy peas. This photo includes: an unexpected sub...
February 13, 2017
Although there are many studies on how environmental conditions and agricultural practices affect nitrous oxide (NO) emissions, it is not well understood how N transformation processes are involved in...
February 13, 2017
Growing premium wine grapes requires the right soil and climate. An ideal combination occurs in parts of California where the majority of the wine grapes in the United States are produced. As an agric...
February 13, 2017
While many soils in the Upper Midwest of the U.S. are extensively tile drained, substantial cropland remains poorly drained, negatively affecting nitrogen (N) fertilizer use efficiency and possibly de...
January 16, 2017
Each month, we highlight a photo that demonstrates great techniques to illustrate research. This month, we thank Monica Mendez for this photo of researchers in the lab. This photo (i) shows action tha...
January 16, 2017
Research in agricultural systems occurs on a range of time spans. Some experiments are carried out for a single growing season while others are maintained...
January 16, 2017
In the Midwestern U.S., where almost all native grassland has been lost to agriculture and development, many groups work to restore native prairie. One reason to restore these grasslands is for their ...