Gonadal intersex and high prevalences of the female phenotype have been observed in fish populations urbanized areas. Environmental estrogens discharged sewage treatment plant effluents may be responsible for feminization but many compounds with potential to induce these responses occur effluents, including natural synthetic estrogen hormones, degradation products alkylphenol ethoxylate surfactants, plasticizers. In this study, hormones 17 alpha-ethinylestradiol, beta-estradiol, estrone,...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOccurrence of Alachlor Environmental Degradation Products in GroundwaterThomas L. Potter and Thomas CarpenterCite this: Environ. Sci. Technol. 1995, 29, 6, 1557–1563Publication Date (Print):June 1, 1995Publication History Published online1 May 2002Published inissue 1 June 1995https://pubs.acs.org/doi/10.1021/es00006a018https://doi.org/10.1021/es00006a018research-articleACS PublicationsRequest reuse permissionsArticle...

The incidence of common dairy cattle diseases varies widely across U.S. herds. While some variability can be attributed to general herd management differences, recent research has also shown that other contributing factors exist such as variation in case recording and definitions used for the same (Wenz Geibel, 2012) (Espadamala et al., 2018). objec­tives this project were to: 1) describe current 4 commonly treated with antimicrobials on farms, 2) identify if similar variations among New...

The fungicide tebuconazole is widely used to control soil-borne and foliar diseases in peanuts other crops. No published data are currently available on the extent rate at which this compound degrades soil. Unpublished summarized registration documents suggest that persistent, with 300-600 days half-life. We conducted a 63-day laboratory incubation evaluate tebuconazole's dissipation kinetics impact soil microbial activity Tifton loamy sand. soils support extensive peanut production Atlantic...

Abstract The low‐carbon, intensively cropped Coastal Plain soils of Georgia are susceptible to runoff, soil loss, and drought. Reduced tillage systems offer the best management tool for sustained row crop production. Understanding sediment, chemical losses from conventional reduced is expected improve if effect a variable rainfall intensity storm was quantified. Our objective quantify compare effects constant (I c ) pattern more realistic, observed, v on runoff (R), sediment (E), carbon (C)...

Ten years ago, the USDA Agricultural Research Service (ARS) began a series of watershed assessment studies as part Conservation Effects Assessment Project (CEAP). In this overview, decade research progress in 14 watersheds dominated by rain-fed croplands is reviewed to introduce special section journal issue containing papers describing multiwatershed syntheses. The evaluate impacts agricultural practices on soil quality, stream sediment sources, and role climate variability conservation...

Leaf oil was isolated from two commercial samples of cilantro (Coriandrum sativum L.) and growth-chamber-grown plants at five different stages growth. The oils were analyzed by GC/MS. They found to be composed mainly C10−C16 aldehydes. (E)-2-Alkenals predominated. Substantial quantitative differences observed between the in leaf growth stages. data indicate that may exhibit significant variation composition due ontogenic factors. also suggest a possible link among stage, composition,...

The peanut plant (Arachis hypogaea) is known to produce stilbene phytoalexins as a defensive response fungal invasion; however, the distribution of among different organs at early stages growth under axenic conditions has not been studied. Axenic plants produced stilbenoid, resveratrol, well soluble bound and free phenolic acids, including 4-methoxycinnamic acid, which reported in peanuts for first time. Neither resveratrol nor acids were found root mucilage; prenylated stilbenes restricted...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComposition of coriander leaf volatilesThomas L. Potter and Irving S. FagersonCite this: J. Agric. Food Chem. 1990, 38, 11, 2054–2056Publication Date (Print):November 1, 1990Publication History Published online1 May 2002Published inissue 1 November 1990https://pubs.acs.org/doi/10.1021/jf00101a011https://doi.org/10.1021/jf00101a011research-articleACS PublicationsRequest reuse permissionsArticle Views781Altmetric-Citations52LEARN ABOUT THESE...

Climate and soil conditions in South Florida along with an extensive canal system facilitate movement of agricultural pesticides into surface waters. In a two-year study (2002-2004) the currently used Florida, atrazine, endosulfan, metolachlor, chlorpyrifos, chlorothalonil were most frequently detected canals Biscayne Bay, average concentrations 16, 11, 9.0, 2.6, 6.0 ng/L, respectively. Concentrations atrazine chlorpyrifos highest near corn production. Chlorothalonil endosulfan vegetable...

The objective was to evaluate the relationship of somatic cell count (SCC; cells/mL) with milk yield, energy-corrected yield (ECM; kg/d), dry matter intake (DMI; feed efficiency for (FEMY; kg milk/kg DMI), and ECM (FEECM; ECM/kg DMI) in lactating dairy cows. We analyzed an SCC database consisting 7 experiments, which were conducted at Pennsylvania State University's Dairy Teaching Research Center between 2009 2015. experiments included randomized block designs investigated dietary effects on...

Abstract Seven prenylated stilbenes were identified by combined HPLC‐PAD‐APCI/MSn analysis of an extract mucilage isolated from peanut ( Arachis hypogaea L.) root tips. The principal constituent was assigned the structure 4‐(3‐methyl‐but‐1‐enyl)‐3, 5‐dimethoxy‐4¢‐hydroxy‐ trans ‐stilbene. common name mucilagin A is proposed for this novel compound. Its concentration in estimated at 250 σg/g (wet weight basis). large body literature on anti‐microbial properties plant‐derived suggests that...

Abstract South Florida's Miami‐Dade agricultural area is located between two protected natural areas, the Biscayne and Everglades National Parks, subject to costliest environmental restoration project in history. Agriculture, an important economic activity region, competes for land water resources with efforts Miami's urban sprawl. The objective of this study, understanding quality interactions use shallow regional aquifer, critical reduction agriculture's potentially negative impacts. A...

Further studies on the quality of runoff from tillage and cropping systems in southeastern USA are needed to refine current risk assessment tools for nutrient contamination. Our objective was quantify compare effects constant (Ic) variable (Iv) rainfall intensity patterns inorganic nitrogen (N) phosphorus (P) losses a Tifton loamy sand (Plinthic Kandiudult) cropped cotton (Gossypium hirsutum L.) managed under conventional (CT) or strip-till (ST) systems. We simulated at pattern (57 mm h(-1))...

Simulation models are widely used to assess water contamination risk associated with pesticide use and for evaluating effectiveness of agricultural conservation practices. Currently, the APEX (Agricultural Policy/Environmental eXtender) model is being this purpose in USDA Conservation Effects Assessment Project (CEAP) Cropland National Assessment. In support CEAP modeling effort, was calibrated validated using a nine-year record (1999-2007) crop yield, surface runoff, tile outflow an...