Browsing by Subject "Edible Grain"

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    Global nitrogen budgets in cereals: A 50-year assessment for maize, rice, and wheat production systems.
    (Scientific reports, 2016-01-18) Ladha, JK; Tirol-Padre, A; Reddy, CK; Cassman, KG; Verma, Sudhir; Powlson, DS; van Kessel, C; de B Richter, Daniel; Chakraborty, Debashis; Pathak, Himanshu
    Industrially produced N-fertilizer is essential to the production of cereals that supports current and projected human populations. We constructed a top-down global N budget for maize, rice, and wheat for a 50-year period (1961 to 2010). Cereals harvested a total of 1551 Tg of N, of which 48% was supplied through fertilizer-N and 4% came from net soil depletion. An estimated 48% (737 Tg) of crop N, equal to 29, 38, and 25 kg ha(-1) yr(-1) for maize, rice, and wheat, respectively, is contributed by sources other than fertilizer- or soil-N. Non-symbiotic N2 fixation appears to be the major source of this N, which is 370 Tg or 24% of total N in the crop, corresponding to 13, 22, and 13 kg ha(-1) yr(-1) for maize, rice, and wheat, respectively. Manure (217 Tg or 14%) and atmospheric deposition (96 Tg or 6%) are the other sources of N. Crop residues and seed contribute marginally. Our scaling-down approach to estimate the contribution of non-symbiotic N2 fixation is robust because it focuses on global quantities of N in sources and sinks that are easier to estimate, in contrast to estimating N losses per se, because losses are highly soil-, climate-, and crop-specific.
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    Trends in Food Consumption Patterns of US Infants and Toddlers from Feeding Infants and Toddlers Studies (FITS) in 2002, 2008, 2016.
    (Nutrients, 2019-11-17) Duffy, Emily W; Kay, Melissa C; Jacquier, Emma; Catellier, Diane; Hampton, Joel; Anater, Andrea S; Story, Mary
    The Feeding Infants and Toddlers Study (FITS) is the largest survey of dietary intake among infants and young children in the United States. Dietary patterns in early childhood are a key component of prevention of diet-related chronic diseases, yet little is known about how food consumption patterns of infants and young children have changed over time. The objective of this study is to examine trends in food and beverage consumption among children ages 6-23.9 months using data from the FITS conducted in 2002, 2008, and 2016. A total of 5963 infants and young children ages 6-23.9 months were included in these analyses. Food consumption data were collected using a multiple-pass 24-h recall by telephone using the Nutrition Data System for Research. Linear trends were assessed using the Wald's test in a multivariable linear regression model. Positive significant findings include increases in breast milk consumption and decreases in the consumption of sweets, sugar-sweetened beverages, and 100% fruit juice. More troubling findings include decreasing infant cereal consumption, stagnant or decreasing whole grain consumption, and stagnant consumption of vegetables. Our findings suggest some promising improvements in dietary intake among infants and toddlers in the United States over the past 15 years, but further policy, programmatic, and industry efforts are still needed.