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Corn Belt

Mishra, U., Ussiri, D. A. N., and Lai, R. (2010). Tillage effects on soil organic carbon storage and dynamics in Corn Belt of Ohio USA. Soil Tillage Res. 107, 88-96. [Pg.85]

Varvel GE (2006) Soil organic carbon changes in diversified rotations of the western Corn Belt. Agron J 70 426 133... [Pg.216]

Lockeretz, W., Shearer, G. and Kohl, D. 1981. Organic farming in the corn belt. Science 211 540-547. [Pg.48]

Klepper, R., Lockeretz, W. Commoner, B., Gertler, M., Fast, S., O Leary, D. and Blobaum, R. 1977. Economic performance and energy intensiveness on organic and conventional farms in the Corn Belt a preliminary comparison. American Journal of Agricultural Economics 59(1) 1-12. [Pg.242]

As a result of their geographical circumstances and these various historical developments, many estuaries appear to be among the most heavily loaded ecosystems in the world in terms of the amount of nitrogen and phosphorus received per unit area (Fig. 5). Even the farm fields of the American corn belt do not receive the fertilization common to many estuaries, and the nutrient inputs to natural terrestrial systems and fresh waters appear to be orders of magnitude lower. There are fewer data available on the inputs of metals and other pollutants to estuaries, but the evidence at hand suggests that the delivery of heavy metals to estuaries may equal or exceed that deposited from the atmosphere on heavily industrialized urban areas and exceed that deposited on rural terrestrial ecosystems by orders of magnitude (Fig. 6). [Pg.102]

In corn, the catalyst for adoption of preplant incorporated applications was not the introduction of an herbicide, but the introduction of safeners. The thiocarbamate herbicide S-ethyl dipropylthiocarbamate (EPTC) for corn weed control was first used in Illinois as early as 1961 however, the propensity for EPTC to injure com limited its use to 1% or less of the Illinois crop up to 1970 (Table 4.1). Dichlormid, a safener later packaged with EPTC, greatly improved crop safety and resulted in nearly one-quarter of the com acreage being treated with EPTC throughout the Corn Belt by 1976. [Pg.54]

One of the sampling sites was located on Isle Royale in the northwest part of Lake Superior near the Canadian border and far from the US Corn Belt. Atrazine, presumably from the Com Belt, was detected and verified by GC/MS analysis in samples from several rains at this site during June 1990. These data prompted the collection of water samples from Lake Superior and from four small lakes on Isle Royale in late September 1990. The atrazine concentration in these samples, determined by isotope dilution methods, was 6.5 nanograms per liter (ng/L) for Lake Superior,... [Pg.464]

Northern Corn Belt states and New England states were slower to adopt conservation tillage practices that left crop residues on the soil. The soil in those Northern states warmed more slowly, and these areas received much more rainfall. The addition of crop residues slowed the warming of soil even more, delaying seed germination. Researchers and farmers in Northern states found that ridge tilling raised seedbeds and enabled soil to warm more quickly. [Pg.544]

Aigner, E.J., Leone, A.D., Falconer, R.L., 1998. Concentrations and enantiomeric ratios of organochlorine pesticides in soil from the US Corn Belt. Environ. Sci. Technol. 32(9), 1162-1168. [Pg.307]

Similarly, the nonracemic signatures of heptachlor epoxide, cis- and traKi-chlordane, oxychlordane, and o,/i -DDT in soils of the US Midwestern Corn Belt [35, 143] were... [Pg.112]

I recently calculated that in my home province of Ontario growing degree days may increase by 10 to 25 per cent by 2050 AD, with a net increase in the growing season of five to seven weeks (Hare, 1982). This would allow the penetration of typical corn belt agriculture into southern areas of Ontario. On the Canadian Prairies, now dominated by spring wheat-barley-oilseeds cultivation, winter wheat might become the dominant crop. These gains would, however, be lost if rainfall failed to make up for the increased water demands that are implied. [Pg.435]

Norton, S., S. Cormier, and M. Smith et al. 2002b. Predicting levels of stress from biological assessment data Empirical models from the Eastern Corn Belt Plains, Ohio. Environ. Toxicol. Chem. 21 1168-1175. [Pg.399]

Oats are grown in the corn belt, which includes all the states of the second group, largely because a small-grain crop is needed in the rotation and because the grain is desired for feeding to work stock. Spring wheat is seldom satisfactory in this district and winter crops often do not fit well into a rotation which... [Pg.32]

Hungary - as a typical corn-belt country with significant yields of corn production - is naturally interested in expanding and economizing large-scale industrial application of corn. Therefore, a technology for combined iso-sugar-alcohol production has been elaborated [9]. [Pg.157]

EPTC was repositioned in the marketplace as an annual grass herbicide in 1985, a rotational statement was added to prevent the repeated annual use of EPTC, and shattercane control claims were removed from the label. EPTC was targeted specifically for foxtail (Setaria spp.) and annual broadleaf weed control in the north where cool and wet soils prevail in the spring. EPTC has been a very successful product, provided excellent weed control, and increased in market share every year since its reintroduction as an annual grass and broadleaf herbicide. The other commercial carbamothioate herbicides, EPTC + dietholate and butylate, were positioned as difficult to control weed and southern corn belt herbicides, respectively. No rotational statements have been added to the EPTC + dietholate and butylate labels. [Pg.224]

In 1851, the soybean was introduced to Illinois and subsequently throughout the U.S. Corn Belt. The introduction came about through a series of very unusual circumstances. In December 1850, the barque left Hong Kong for San Fran-... [Pg.25]

Forcella, E, Buhler, D. D., Swinton, S. M. andKing, R. P. (1993). Field evaluation of a bioeconomic weed management model for the corn belt, USA. In 8th EWRS Symposium on Quantitative Approaches in Weed and Herbicide Research and their Practical Application, pp. 775-60. European Weed Research Society, Braunschweig. [Pg.48]

StoUer, E. W., Loyd, M. W. and Aim, D. M. (1993). Survey results on environmental issues and weed science research priorities within the corn belt. Weed Technology, 7,763-70. [Pg.48]

Glaciers have also been major factors in soil formation, as,for example, in the soils of the Corn Belt. Soils and rocks that at one time were in southern Canada and the northern portion of the United States were scooped out, pulverized and mixed by the moving ice and deposited further south when the ice melted. The scouring and scooping action was responsible for the formation of the Great Lakes. [Pg.29]

Lying between the broad belt of the eastern podzols and the westeni chernozem soils are the prairie soils, often designated as the Corn Belt soils. As would be expected, there are all gradations between the two groups on either side. Most of these prairie soils received enough rainfall for considerable leaching to occur and for the removal of the calcium into the drainage waters. Calcium deposits in the lower horizons are seldom... [Pg.123]


See other pages where Corn Belt is mentioned: [Pg.441]    [Pg.184]    [Pg.208]    [Pg.55]    [Pg.159]    [Pg.169]    [Pg.170]    [Pg.470]    [Pg.538]    [Pg.599]    [Pg.299]    [Pg.335]    [Pg.23]    [Pg.44]    [Pg.107]    [Pg.149]    [Pg.387]    [Pg.388]    [Pg.295]    [Pg.33]    [Pg.348]    [Pg.142]    [Pg.70]    [Pg.1]    [Pg.176]    [Pg.259]    [Pg.22]    [Pg.22]   
See also in sourсe #XX -- [ Pg.137 , Pg.152 ]




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