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Mathematical models
(21)
mathematical models
(21)
Yields
(11)
crop yield
(10)
Forecasting
(8)
Crop yields
(7)
agricultural forecasts
(7)
Corn
(6)
United States
(5)
corn
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United States Dept. of Agriculture. Statistical Reporting Service.
(3)
United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
(3)
Birkett, Thomas R.
(2)
Cotter, James J.
(2)
Huddleston, Harold F.
(2)
Sebaugh, Jeanne L.
(2)
United States Dept. of Agriculture. Economic Research Service.
(2)
Arkin, G. F. (Gerald F.)
(1)
Arnold, J. G. (Jeffrey G.) 1959-
(1)
Battaglia, Robert J.
(1)
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1982
(2)
1983
(2)
1984
(2)
1963
(1)
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(1)
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(1)
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892
United States. Dept. of Agriculture. Economic Research Service.
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777
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720
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1.
An evaluation of the sources, accuracy and availability of the input data required to run Feyerherm's winter wheat model and preliminary testing performed by Dr. Feyerherm
Author(s):
Cotter, James J.
Subject(s):
Winter wheat
,
Mathematical models
,
winter wheat
,
mathematical models
,
Indiana
,
Kansas
,
Montana
,
Ohio
Year:
1982
2.
An evaluation of two feedback versions of the Ceres-Maize model
Author(s):
Iwig, William C.
,
Klugh, Benjamin F.
,
United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject(s):
Corn
,
Yields
,
Forecasting
,
Mathematical models
,
Sampling
,
Crop yields
,
Simulation methods
,
corn
,
agricultural forecasts
,
data analysis
,
sampling
,
yields
,
simulation models
,
mathematical models
Year:
1986
3.
Comparison of the CEAS and Thompson-type models for corn yields in Iowa, Illinois, and Indiana
Author(s):
Cotter, James J.
Subject(s):
Corn
,
Yields
,
Iowa
,
Illinois
,
Indiana
,
Crop yields
,
Mathematical models
,
corn
,
Zea mays
,
crop yield
,
mathematical models
Year:
1984
4.
Comparison of the CEAS and Thompson-type models for soybean yields in Iowa, Illinois, and Indiana
Author(s):
Sebaugh, Jeanne L.
Subject(s):
Soybean
,
Yields
,
Iowa
,
Illinois
,
Indiana
,
Crop yields
,
Mathematical models
,
soybeans
,
Glycine max
,
crop yield
,
mathematical models
Year:
1983
5.
Evaluation of the CEAS trend and monthly weather data models for corn yields in Iowa, Illinois, and Indiana
Author(s):
Kestle, Richard A.
,
United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject(s):
Meteorology, Agricultural
,
Iowa
,
Mathematical models
,
Illinois
,
Indiana
,
Crops and climate
,
Crop yields
,
Corn
,
agrometeorology
,
climate models
,
crop yield
,
corn
,
Zea mays
,
mathematical models
,
model validation
,
crop models
,
regression analysis
Year:
1982
6.
Evaluation of the CEAS trend and monthly weather data models for spring wheat yields in North Dakota and Minnesota
Author(s):
Sebaugh, Jeanne L.
Subject(s):
Wheat
,
Yields
,
North Dakota
,
Minnesota
,
Meteorology, Agricultural
,
Mathematical models
,
Crops and climate
,
Crop yields
,
spring wheat
,
Triticum
,
agrometeorology
,
climate models
,
crop yield
,
mathematical models
,
model validation
,
crop models
,
regression analysis
Year:
1981
7.
Forecasting consumer price indexes for food : a demand model approach
Author(s):
Huang, Kuo S.
,
United States Dept. of Agriculture. Economic Research Service.
Subject(s):
Food prices
,
United States
,
Forecasting
,
Mathematical models
,
food prices
,
mathematical models
,
agricultural forecasts
Year:
2000
8.
Improving the income allocation procedures in MATH
Author(s):
Doyle, Pat.
,
Trippe, Carole.
,
United States Food and Nutrition Service.
,
Mathematica Policy Research, Inc
Subject(s):
Food stamps
,
United States
,
Mathematical models
,
Poverty
,
Income distribution
,
Supplemental Nutrition Assistance Program
,
income distribution
,
mathematical models
,
poverty
Year:
1992
9.
Measuring food security in the Dominican Republic : adaptation of the U.S. food security survey module
Author(s):
Mesfin Bezuneh 1953-
,
United States Dept. of Agriculture. Economic Research Service.
Subject(s):
Food supply
,
Dominican Republic
,
Mathematical models
,
food security
,
mathematical models
,
United States
Year:
2008
10.
On diffusion laws applied to porous materials
Author(s):
Jackson, R. D.
,
Nielsen, Donald R. 1931-
,
Nakayama, F. S. 1930-
Subject(s):
Porous materials
,
Diffusion
,
Mathematical models
,
porosity
,
mathematical models
Year:
1963
11.
SWAT 2005 : geo-referenced tile flow and pothole component application to the South Fork of the Iowa River
Author(s):
Green, C. H.
,
Tomer, M. D.
,
Arnold, J. G. (Jeffrey G.) 1959-
,
Grassland Soil and Water Research Laboratory (U.S.)
,
National Soil Tilth Laboratory (U.S.)
Subject(s):
Stream measurements
,
Iowa
,
Iowa River, South Fork, Watershed
,
Streamflow
,
Mathematical models
,
stream flow
,
mathematical models
Year:
2005
12.
Sensitivity analysis of the Texas A & M wheat (TAMW) model
Author(s):
Larsen, Greg A.
,
United States Dept. of Agriculture. Statistical Reporting Service. Statistical Research Division.
Subject(s):
Crop yields
,
Simulation methods
,
Mathematical models
,
wheat
,
grain yield
,
mathematical models
,
agricultural forecasts
Year:
1983
13.
Some current research efforts to improve crop forecasting methods
Author(s):
Wilson, Wendell W.
,
United States Dept. of Agriculture. Statistical Reporting Service.
Subject(s):
Corn
,
Yields
,
Forecasting
,
Mathematical models
,
corn ears
,
yields
,
agricultural forecasts
,
mathematical models
Year:
1975
14.
Soybean objective yield research
Author(s):
Battaglia, Robert J.
,
Bovard, Gary N.
,
United States Dept. of Agriculture. Statistical Reporting Service.
Subject(s):
Soybean
,
Yields
,
United States
,
Forecasting
,
Mathematical models
,
soybeans
,
yields
,
agricultural forecasts
,
mathematical models
Year:
1984
15.
Spatial scale of crop-yield models : a review of the relationship between scale of models and accuracy
Author(s):
Strand, Bruce W.
,
United States Dept. of Agriculture. Economics and Statistics Service.
,
United States. Dept. of Agriculture. Economics and Statistics Service.
Subject(s):
Synoptic climatology
,
Crop yields
,
Mathematical models
,
meteorology and climatology
,
crop yield
,
mathematical models
16.
The Feyerherm winter wheat model
Author(s):
Bigsby, Fatu G.
,
United States National Agricultural Statistics Service. Research and Applications Division.
Subject(s):
Wheat
,
Yields
,
Middle West
,
Forecasting
,
Mathematical models
,
winter wheat
,
crop yield
,
estimation
,
mathematical models
,
Midwestern United States
Year:
1987
17.
The future role of a crop model in large area yield estimating
Author(s):
Arkin, G. F. (Gerald F.)
,
Wiegand, Craig L.
,
Huddleston, Harold F.
Subject(s):
Sorghum
,
Yields
,
Forecasting
,
Mathematical models
,
grain sorghum
,
crop yield
,
estimation
,
mathematical models
Year:
1977
18.
The new objective yield models for corn and soybeans
Author(s):
Birkett, Thomas R.
,
United States National Agricultural Statistics Service. Estimates Division.
Subject(s):
Corn
,
Yields
,
United States
,
Mathematical models
,
Soybean
,
corn
,
soybeans
,
crop yield
,
estimation
,
mathematical models
Year:
1990
19.
Unbiased estimates for stratified subsample design
Author(s):
Cochran, Robert S.
,
Huddleston, Harold F.
Subject(s):
Sampling (Statistics)
,
Mathematical models
,
sampling
,
mathematical models
Year:
1970
20.
Using objective measurements of plant and soil characteristics to forecast weight of grain per head for winter wheat
Author(s):
Wigton, William H.
,
Warren, Fred B.
,
United States Dept. of Agriculture. Statistical Reporting Service.
Subject(s):
Winter wheat
,
Yields
,
Oklahoma
,
Forecasting
,
Mathematical models
,
Montana
,
winter wheat
,
crop yield
,
agricultural forecasts
,
mathematical models
Year:
1971
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