Results 311 to 320 of about 410,319 (359)
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Corn Yield and Climate in the Corn Belt
Geographical Review, 1936HE correlation of variations in corn yield with fluctuations of climatic factors is more than an academic problem. Many of the human activities prominent in the Corn Belt, rural or urban, are directly or indirectly related to corn. Beginning with the preparation of the seedbed in spring and extending intermittently through the harvesttime of late ...
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Soil Structure and Corn Yields
Transactions of the ASAE, 1981ABSTRACT OVER the past 4 yr, several trials have been conduct-ed in which plots in a clay field were subjected to various levels of compaction and corn grown on each of the plots. Recently, a zero-till experiment was conducted in which corn was grown for two consecutive years on compacted plots with no interim tillage.
null F. Taylor +5 more
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Nonlinear Effects of Weather on Corn Yields*
Review of Agricultural Economics, 2006This paper examines the reduced-form relationship between weather and yields using a unique data set of maize yields and daily weather records covering the eastern USA for 1950-2004. Since weather variations in a fixed location are exogenous and random, the reduced-form relationship constitutes a viable natural experiment and is therefore clearly ...
Wolfram Schlenker, Michael J. Roberts
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Reducing Corn Yield Variability and Enhancing Yield Through the Use of Corn-Specific Growth Models
Journal of Crop Improvement, 2009Crop simulation models (CSMs) can evaluate the effects of management and environmental scenarios on crop growth and yields. Two corn (Zea mays L.) crop growth simulation models, Hybrid-Maize, and CERES-Maize, were calibrated and validated under mid-Atlantic United States conditions to provide better understanding of corn response to variable ...
F. D. Raymond +3 more
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Growth, yield, and yield components of ethephon-treated corn
Plant Growth Regulation, 1991Field studies were conducted during 1985 and 1986 to study the effect of stage and rate of ethephon application on growth, combine-harvested yield, and yield components of three corn (Zea mays L.) hybrids at two densities. Ethephon was applied at four rates from 0 to 560g ha−1 at three growth stages: tassel elongation (TE ≥ 3mm), TE + 6d, and Ear ...
Gh. R. Khosravi, I. C. Anderson
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The Testing of a Limited-Data Corn Yield Model for Large-Area Corn Yield Predictions
Journal of Applied Meteorology, 1980Abstract A general philosophy of examining models used in agriculture is outlined in four steps: 1) the examination of the assumptions of the model, 2) sensitivity analysis, 3) tests of reasonableness using available data, and 4) designing of an experiment to rigorously test a model.
M. E. Keener +2 more
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Reduction of Corn Yield by First-Generation Southwestern Corn Borers
Journal of Economic Entomology, 1958The effect of first-generation southwestern corn borers ( Zeadiatraea grandiosella Dyar) on the development and yield of dent and sweet corn was studied at Stillwater, Okla., in 1955. Plants in different stages of growth were manually infested with newly hatched larvae.
K. D. Arbuthnot +2 more
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Corn Yield Prediction Using Climatology
Journal of Climate and Applied Meteorology, 1986A method is developed to predict corn yield during the growing season using a plant process model (CERES-Maize), current weather data and climatological data. The procedure is to place the current year's daily weather (temperature and precipitation) into the model up to the time the yield prediction is to be made and sequences of historical data (one ...
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Forecasting corn yield with imaging spectroscopy
2010 IEEE International Geoscience and Remote Sensing Symposium, 2010Corn is the most widely produced grain in the United States with 87 million acres planted in 2009 accounting for more than 90 percent of total value and production of feed grains. Half of United States' corn production is used in livestock feed with the remainder processed into a multitude of food and industrial products including starch, sweeteners ...
Lawrence A. Corp +6 more
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Corn Yield Response to Deficit Irrigation
World Environmental and Water Resources Congress 2011, 2011Because dwindling water supplies are limiting crop production, a 5-year field study was conducted to determine the yield response of corn to irrigation and evapotranspiration (ETc). ETc and productivity (yield/ETc) significantly decreased as irrigation decreased. The deficit irrigation treatments were able to store more non-growing season precipitation
N. L. Klocke, R. S. Currie
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